Merge branch 'develop' into test/activity_pub/transmogrifier.ex

81 files changed, 1975 insertions, 1370 deletions

diff --git a/lib/mix/pleroma.ex b/lib/mix/pleroma.ex
index 1b758ea33..faeb30e1d 100644
--- a/lib/mix/pleroma.ex
+++ b/lib/mix/pleroma.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Pleroma do
diff --git a/lib/mix/tasks/pleroma/database.ex b/lib/mix/tasks/pleroma/database.ex
index bcc2052d6..890a383df 100644
--- a/lib/mix/tasks/pleroma/database.ex
+++ b/lib/mix/tasks/pleroma/database.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.Database do
diff --git a/lib/mix/tasks/pleroma/docs.ex b/lib/mix/tasks/pleroma/docs.ex
new file mode 100644
index 000000000..0d2663648
--- /dev/null
+++ b/lib/mix/tasks/pleroma/docs.ex
@@ -0,0 +1,42 @@
+defmodule Mix.Tasks.Pleroma.Docs do
+  use Mix.Task
+  import Mix.Pleroma
+
+  @shortdoc "Generates docs from descriptions.exs"
+  @moduledoc """
+  Generates docs from `descriptions.exs`.
+
+  Supports two formats: `markdown` and `json`.
+
+  ## Generate Markdown docs
+
+  `mix pleroma.docs`
+
+  ## Generate JSON docs
+
+  `mix pleroma.docs json`
+  """
+
+  def run(["json"]) do
+    do_run(Pleroma.Docs.JSON)
+  end
+
+  def run(_) do
+    do_run(Pleroma.Docs.Markdown)
+  end
+
+  defp do_run(implementation) do
+    start_pleroma()
+
+    with {descriptions, _paths} <- Mix.Config.eval!("config/description.exs"),
+         {:ok, file_path} <-
+           Pleroma.Docs.Generator.process(
+             implementation,
+             descriptions[:pleroma][:config_description]
+           ) do
+      type = if implementation == Pleroma.Docs.Markdown, do: "Markdown", else: "JSON"
+
+      Mix.shell().info([:green, "#{type} docs successfully generated to #{file_path}."])
+    end
+  end
+end
diff --git a/lib/mix/tasks/pleroma/ecto/ecto.ex b/lib/mix/tasks/pleroma/ecto/ecto.ex
index b66f63376..36808b93f 100644
--- a/lib/mix/tasks/pleroma/ecto/ecto.ex
+++ b/lib/mix/tasks/pleroma/ecto/ecto.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-onl
 
 defmodule Mix.Tasks.Pleroma.Ecto do
diff --git a/lib/mix/tasks/pleroma/ecto/migrate.ex b/lib/mix/tasks/pleroma/ecto/migrate.ex
index 855c977f6..d87b6957d 100644
--- a/lib/mix/tasks/pleroma/ecto/migrate.ex
+++ b/lib/mix/tasks/pleroma/ecto/migrate.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-onl
 
 defmodule Mix.Tasks.Pleroma.Ecto.Migrate do
diff --git a/lib/mix/tasks/pleroma/ecto/rollback.ex b/lib/mix/tasks/pleroma/ecto/rollback.ex
index 2ffb0901c..a1af73fa1 100644
--- a/lib/mix/tasks/pleroma/ecto/rollback.ex
+++ b/lib/mix/tasks/pleroma/ecto/rollback.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-onl
 
 defmodule Mix.Tasks.Pleroma.Ecto.Rollback do
diff --git a/lib/mix/tasks/pleroma/emoji.ex b/lib/mix/tasks/pleroma/emoji.ex
index c2225af7d..238d8dcd9 100644
--- a/lib/mix/tasks/pleroma/emoji.ex
+++ b/lib/mix/tasks/pleroma/emoji.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.Emoji do
diff --git a/lib/mix/tasks/pleroma/instance.ex b/lib/mix/tasks/pleroma/instance.ex
index b9b1991c2..1a1634fe9 100644
--- a/lib/mix/tasks/pleroma/instance.ex
+++ b/lib/mix/tasks/pleroma/instance.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.Instance do
diff --git a/lib/mix/tasks/pleroma/relay.ex b/lib/mix/tasks/pleroma/relay.ex
index a738fae75..200721163 100644
--- a/lib/mix/tasks/pleroma/relay.ex
+++ b/lib/mix/tasks/pleroma/relay.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.Relay do
diff --git a/lib/mix/tasks/pleroma/uploads.ex b/lib/mix/tasks/pleroma/uploads.ex
index be45383ee..95392d81b 100644
--- a/lib/mix/tasks/pleroma/uploads.ex
+++ b/lib/mix/tasks/pleroma/uploads.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.Uploads do
diff --git a/lib/mix/tasks/pleroma/user.ex b/lib/mix/tasks/pleroma/user.ex
index a3f8bc945..eb0052144 100644
--- a/lib/mix/tasks/pleroma/user.ex
+++ b/lib/mix/tasks/pleroma/user.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.User do
diff --git a/lib/pleroma/activity.ex b/lib/pleroma/activity.ex
index 44f1e3011..ec558168a 100644
--- a/lib/pleroma/activity.ex
+++ b/lib/pleroma/activity.ex
@@ -6,6 +6,7 @@ defmodule Pleroma.Activity do
   use Ecto.Schema
 
   alias Pleroma.Activity
+  alias Pleroma.Activity.Queries
   alias Pleroma.ActivityExpiration
   alias Pleroma.Bookmark
   alias Pleroma.Notification
@@ -65,8 +66,8 @@ defmodule Pleroma.Activity do
     timestamps()
   end
 
-  def with_joined_object(query) do
-    join(query, :inner, [activity], o in Object,
+  def with_joined_object(query, join_type \\ :inner) do
+    join(query, join_type, [activity], o in Object,
       on:
         fragment(
           "(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
@@ -78,10 +79,10 @@ defmodule Pleroma.Activity do
     )
   end
 
-  def with_preloaded_object(query) do
+  def with_preloaded_object(query, join_type \\ :inner) do
     query
     |> has_named_binding?(:object)
-    |> if(do: query, else: with_joined_object(query))
+    |> if(do: query, else: with_joined_object(query, join_type))
     |> preload([activity, object: object], object: object)
   end
 
@@ -107,12 +108,9 @@ defmodule Pleroma.Activity do
   def with_set_thread_muted_field(query, _), do: query
 
   def get_by_ap_id(ap_id) do
-    Repo.one(
-      from(
-        activity in Activity,
-        where: fragment("(?)->>'id' = ?", activity.data, ^to_string(ap_id))
-      )
-    )
+    ap_id
+    |> Queries.by_ap_id()
+    |> Repo.one()
   end
 
   def get_bookmark(%Activity{} = activity, %User{} = user) do
@@ -133,21 +131,10 @@ defmodule Pleroma.Activity do
   end
 
   def get_by_ap_id_with_object(ap_id) do
-    Repo.one(
-      from(
-        activity in Activity,
-        where: fragment("(?)->>'id' = ?", activity.data, ^to_string(ap_id)),
-        left_join: o in Object,
-        on:
-          fragment(
-            "(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
-            o.data,
-            activity.data,
-            activity.data
-          ),
-        preload: [object: o]
-      )
-    )
+    ap_id
+    |> Queries.by_ap_id()
+    |> with_preloaded_object(:left)
+    |> Repo.one()
   end
 
   def get_by_id(id) do
@@ -158,18 +145,9 @@ defmodule Pleroma.Activity do
   end
 
   def get_by_id_with_object(id) do
-    from(activity in Activity,
-      where: activity.id == ^id,
-      inner_join: o in Object,
-      on:
-        fragment(
-          "(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
-          o.data,
-          activity.data,
-          activity.data
-        ),
-      preload: [object: o]
-    )
+    Activity
+    |> where(id: ^id)
+    |> with_preloaded_object()
     |> Repo.one()
   end
 
@@ -180,51 +158,21 @@ defmodule Pleroma.Activity do
     |> Repo.all()
   end
 
-  def by_object_ap_id(ap_id) do
-    from(
-      activity in Activity,
-      where:
-        fragment(
-          "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
-          activity.data,
-          activity.data,
-          ^to_string(ap_id)
-        )
-    )
-  end
-
-  def create_by_object_ap_id(ap_ids) when is_list(ap_ids) do
-    from(
-      activity in Activity,
-      where:
-        fragment(
-          "coalesce((?)->'object'->>'id', (?)->>'object') = ANY(?)",
-          activity.data,
-          activity.data,
-          ^ap_ids
-        ),
-      where: fragment("(?)->>'type' = 'Create'", activity.data)
-    )
-  end
-
-  def create_by_object_ap_id(ap_id) when is_binary(ap_id) do
-    from(
-      activity in Activity,
-      where:
-        fragment(
-          "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
-          activity.data,
-          activity.data,
-          ^to_string(ap_id)
-        ),
-      where: fragment("(?)->>'type' = 'Create'", activity.data)
-    )
+  @doc """
+  Accepts `ap_id` or list of `ap_id`.
+  Returns a query.
+  """
+  @spec create_by_object_ap_id(String.t() | [String.t()]) :: Ecto.Queryable.t()
+  def create_by_object_ap_id(ap_id) do
+    ap_id
+    |> Queries.by_object_id()
+    |> Queries.by_type("Create")
   end
 
-  def create_by_object_ap_id(_), do: nil
-
   def get_all_create_by_object_ap_id(ap_id) do
-    Repo.all(create_by_object_ap_id(ap_id))
+    ap_id
+    |> create_by_object_ap_id()
+    |> Repo.all()
   end
 
   def get_create_by_object_ap_id(ap_id) when is_binary(ap_id) do
@@ -235,54 +183,17 @@ defmodule Pleroma.Activity do
 
   def get_create_by_object_ap_id(_), do: nil
 
-  def create_by_object_ap_id_with_object(ap_ids) when is_list(ap_ids) do
-    from(
-      activity in Activity,
-      where:
-        fragment(
-          "coalesce((?)->'object'->>'id', (?)->>'object') = ANY(?)",
-          activity.data,
-          activity.data,
-          ^ap_ids
-        ),
-      where: fragment("(?)->>'type' = 'Create'", activity.data),
-      inner_join: o in Object,
-      on:
-        fragment(
-          "(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
-          o.data,
-          activity.data,
-          activity.data
-        ),
-      preload: [object: o]
-    )
-  end
-
-  def create_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do
-    from(
-      activity in Activity,
-      where:
-        fragment(
-          "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
-          activity.data,
-          activity.data,
-          ^to_string(ap_id)
-        ),
-      where: fragment("(?)->>'type' = 'Create'", activity.data),
-      inner_join: o in Object,
-      on:
-        fragment(
-          "(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
-          o.data,
-          activity.data,
-          activity.data
-        ),
-      preload: [object: o]
-    )
+  @doc """
+  Accepts `ap_id` or list of `ap_id`.
+  Returns a query.
+  """
+  @spec create_by_object_ap_id_with_object(String.t() | [String.t()]) :: Ecto.Queryable.t()
+  def create_by_object_ap_id_with_object(ap_id) do
+    ap_id
+    |> create_by_object_ap_id()
+    |> with_preloaded_object()
   end
 
-  def create_by_object_ap_id_with_object(_), do: nil
-
   def get_create_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do
     ap_id
     |> create_by_object_ap_id_with_object()
@@ -306,7 +217,8 @@ defmodule Pleroma.Activity do
   def normalize(_), do: nil
 
   def delete_by_ap_id(id) when is_binary(id) do
-    by_object_ap_id(id)
+    id
+    |> Queries.by_object_id()
     |> select([u], u)
     |> Repo.delete_all()
     |> elem(1)
@@ -350,31 +262,10 @@ defmodule Pleroma.Activity do
   end
 
   def follow_requests_for_actor(%Pleroma.User{ap_id: ap_id}) do
-    from(
-      a in Activity,
-      where:
-        fragment(
-          "? ->> 'type' = 'Follow'",
-          a.data
-        ),
-      where:
-        fragment(
-          "? ->> 'state' = 'pending'",
-          a.data
-        ),
-      where:
-        fragment(
-          "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
-          a.data,
-          a.data,
-          ^ap_id
-        )
-    )
-  end
-
-  @spec query_by_actor(actor()) :: Ecto.Query.t()
-  def query_by_actor(actor) do
-    from(a in Activity, where: a.actor == ^actor)
+    ap_id
+    |> Queries.by_object_id()
+    |> Queries.by_type("Follow")
+    |> where([a], fragment("? ->> 'state' = 'pending'", a.data))
   end
 
   def restrict_deactivated_users(query) do
diff --git a/lib/pleroma/activity/ir/topics.ex b/lib/pleroma/activity/ir/topics.ex
new file mode 100644
index 000000000..010897abc
--- /dev/null
+++ b/lib/pleroma/activity/ir/topics.ex
@@ -0,0 +1,63 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Activity.Ir.Topics do
+  alias Pleroma.Object
+  alias Pleroma.Web.ActivityPub.Visibility
+
+  def get_activity_topics(activity) do
+    activity
+    |> Object.normalize()
+    |> generate_topics(activity)
+    |> List.flatten()
+  end
+
+  defp generate_topics(%{data: %{"type" => "Answer"}}, _) do
+    []
+  end
+
+  defp generate_topics(object, activity) do
+    ["user", "list"] ++ visibility_tags(object, activity)
+  end
+
+  defp visibility_tags(object, activity) do
+    case Visibility.get_visibility(activity) do
+      "public" ->
+        if activity.local do
+          ["public", "public:local"]
+        else
+          ["public"]
+        end
+        |> item_creation_tags(object, activity)
+
+      "direct" ->
+        ["direct"]
+
+      _ ->
+        []
+    end
+  end
+
+  defp item_creation_tags(tags, %{data: %{"type" => "Create"}} = object, activity) do
+    tags ++ hashtags_to_topics(object) ++ attachment_topics(object, activity)
+  end
+
+  defp item_creation_tags(tags, _, _) do
+    tags
+  end
+
+  defp hashtags_to_topics(%{data: %{"tag" => tags}}) do
+    tags
+    |> Enum.filter(&is_bitstring(&1))
+    |> Enum.map(fn tag -> "hashtag:" <> tag end)
+  end
+
+  defp hashtags_to_topics(_), do: []
+
+  defp attachment_topics(%{data: %{"attachment" => []}}, _act), do: []
+
+  defp attachment_topics(_object, %{local: true}), do: ["public:media", "public:local:media"]
+
+  defp attachment_topics(_object, _act), do: ["public:media"]
+end
diff --git a/lib/pleroma/activity/queries.ex b/lib/pleroma/activity/queries.ex
index aa5b29566..949f010a8 100644
--- a/lib/pleroma/activity/queries.ex
+++ b/lib/pleroma/activity/queries.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Activity.Queries do
@@ -13,6 +13,14 @@ defmodule Pleroma.Activity.Queries do
 
   alias Pleroma.Activity
 
+  @spec by_ap_id(query, String.t()) :: query
+  def by_ap_id(query \\ Activity, ap_id) do
+    from(
+      activity in query,
+      where: fragment("(?)->>'id' = ?", activity.data, ^to_string(ap_id))
+    )
+  end
+
   @spec by_actor(query, String.t()) :: query
   def by_actor(query \\ Activity, actor) do
     from(
@@ -21,8 +29,23 @@ defmodule Pleroma.Activity.Queries do
     )
   end
 
-  @spec by_object_id(query, String.t()) :: query
-  def by_object_id(query \\ Activity, object_id) do
+  @spec by_object_id(query, String.t() | [String.t()]) :: query
+  def by_object_id(query \\ Activity, object_id)
+
+  def by_object_id(query, object_ids) when is_list(object_ids) do
+    from(
+      activity in query,
+      where:
+        fragment(
+          "coalesce((?)->'object'->>'id', (?)->>'object') = ANY(?)",
+          activity.data,
+          activity.data,
+          ^object_ids
+        )
+    )
+  end
+
+  def by_object_id(query, object_id) when is_binary(object_id) do
     from(activity in query,
       where:
         fragment(
@@ -41,9 +64,4 @@ defmodule Pleroma.Activity.Queries do
       where: fragment("(?)->>'type' = ?", activity.data, ^activity_type)
     )
   end
-
-  @spec limit(query, pos_integer()) :: query
-  def limit(query \\ Activity, limit) do
-    from(activity in query, limit: ^limit)
-  end
 end
diff --git a/lib/pleroma/application.ex b/lib/pleroma/application.ex
index 1d46925f8..dabce771d 100644
--- a/lib/pleroma/application.ex
+++ b/lib/pleroma/application.ex
@@ -31,34 +31,21 @@ defmodule Pleroma.Application do
     children =
       [
         Pleroma.Repo,
+        Pleroma.Scheduler,
         Pleroma.Config.TransferTask,
         Pleroma.Emoji,
         Pleroma.Captcha,
         Pleroma.FlakeId,
-        Pleroma.ScheduledActivityWorker,
-        Pleroma.ActivityExpirationWorker
+        Pleroma.Daemons.ScheduledActivityDaemon,
+        Pleroma.Daemons.ActivityExpirationDaemon
       ] ++
         cachex_children() ++
         hackney_pool_children() ++
         [
-          Pleroma.Web.Federator.RetryQueue,
           Pleroma.Stats,
-          %{
-            id: :web_push_init,
-            start: {Task, :start_link, [&Pleroma.Web.Push.init/0]},
-            restart: :temporary
-          },
-          %{
-            id: :federator_init,
-            start: {Task, :start_link, [&Pleroma.Web.Federator.init/0]},
-            restart: :temporary
-          },
-          %{
-            id: :internal_fetch_init,
-            start: {Task, :start_link, [&Pleroma.Web.ActivityPub.InternalFetchActor.init/0]},
-            restart: :temporary
-          }
+          {Oban, Pleroma.Config.get(Oban)}
         ] ++
+        task_children(@env) ++
         oauth_cleanup_child(oauth_cleanup_enabled?()) ++
         streamer_child(@env) ++
         chat_child(@env, chat_enabled?()) ++
@@ -70,9 +57,7 @@ defmodule Pleroma.Application do
     # See http://elixir-lang.org/docs/stable/elixir/Supervisor.html
     # for other strategies and supported options
     opts = [strategy: :one_for_one, name: Pleroma.Supervisor]
-    result = Supervisor.start_link(children, opts)
-    :ok = after_supervisor_start()
-    result
+    Supervisor.start_link(children, opts)
   end
 
   defp setup_instrumenters do
@@ -142,7 +127,7 @@ defmodule Pleroma.Application do
   defp streamer_child(:test), do: []
 
   defp streamer_child(_) do
-    [Pleroma.Web.Streamer]
+    [Pleroma.Web.Streamer.supervisor()]
   end
 
   defp oauth_cleanup_child(true),
@@ -165,16 +150,38 @@ defmodule Pleroma.Application do
     end
   end
 
-  defp after_supervisor_start do
-    with digest_config <- Application.get_env(:pleroma, :email_notifications)[:digest],
-         true <- digest_config[:active] do
-      PleromaJobQueue.schedule(
-        digest_config[:schedule],
-        :digest_emails,
-        Pleroma.DigestEmailWorker
-      )
-    end
+  defp task_children(:test) do
+    [
+      %{
+        id: :web_push_init,
+        start: {Task, :start_link, [&Pleroma.Web.Push.init/0]},
+        restart: :temporary
+      },
+      %{
+        id: :federator_init,
+        start: {Task, :start_link, [&Pleroma.Web.Federator.init/0]},
+        restart: :temporary
+      }
+    ]
+  end
 
-    :ok
+  defp task_children(_) do
+    [
+      %{
+        id: :web_push_init,
+        start: {Task, :start_link, [&Pleroma.Web.Push.init/0]},
+        restart: :temporary
+      },
+      %{
+        id: :federator_init,
+        start: {Task, :start_link, [&Pleroma.Web.Federator.init/0]},
+        restart: :temporary
+      },
+      %{
+        id: :internal_fetch_init,
+        start: {Task, :start_link, [&Pleroma.Web.ActivityPub.InternalFetchActor.init/0]},
+        restart: :temporary
+      }
+    ]
   end
 end
diff --git a/lib/pleroma/constants.ex b/lib/pleroma/constants.ex
index ef1418543..0bf20cdd0 100644
--- a/lib/pleroma/constants.ex
+++ b/lib/pleroma/constants.ex
@@ -6,4 +6,16 @@ defmodule Pleroma.Constants do
   use Const
 
   const(as_public, do: "https://www.w3.org/ns/activitystreams#Public")
+
+  const(object_internal_fields,
+    do: [
+      "likes",
+      "like_count",
+      "announcements",
+      "announcement_count",
+      "emoji",
+      "context_id",
+      "deleted_activity_id"
+    ]
+  )
 end
diff --git a/lib/pleroma/activity_expiration_worker.ex b/lib/pleroma/daemons/activity_expiration_daemon.ex
index 0f9e715f8..cab7628c4 100644
--- a/lib/pleroma/activity_expiration_worker.ex
+++ b/lib/pleroma/daemons/activity_expiration_daemon.ex
@@ -2,13 +2,14 @@
 # Copyright © 2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.ActivityExpirationWorker do
+defmodule Pleroma.Daemons.ActivityExpirationDaemon do
   alias Pleroma.Activity
   alias Pleroma.ActivityExpiration
   alias Pleroma.Config
   alias Pleroma.Repo
   alias Pleroma.User
   alias Pleroma.Web.CommonAPI
+
   require Logger
   use GenServer
   import Ecto.Query
@@ -49,7 +50,10 @@ defmodule Pleroma.ActivityExpirationWorker do
   def handle_info(:perform, state) do
     ActivityExpiration.due_expirations(@schedule_interval)
     |> Enum.each(fn expiration ->
-      PleromaJobQueue.enqueue(:activity_expiration, __MODULE__, [:execute, expiration.id])
+      Pleroma.Workers.ActivityExpirationWorker.enqueue(
+        "activity_expiration",
+        %{"activity_expiration_id" => expiration.id}
+      )
     end)
 
     schedule_next()
diff --git a/lib/pleroma/digest_email_worker.ex b/lib/pleroma/daemons/digest_email_daemon.ex
index 5644d6a67..462ad2c55 100644
--- a/lib/pleroma/digest_email_worker.ex
+++ b/lib/pleroma/daemons/digest_email_daemon.ex
@@ -2,10 +2,11 @@
 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.DigestEmailWorker do
-  import Ecto.Query
+defmodule Pleroma.Daemons.DigestEmailDaemon do
+  alias Pleroma.Repo
+  alias Pleroma.Workers.DigestEmailsWorker
 
-  @queue_name :digest_emails
+  import Ecto.Query
 
   def perform do
     config = Pleroma.Config.get([:email_notifications, :digest])
@@ -20,8 +21,10 @@ defmodule Pleroma.DigestEmailWorker do
       where: u.last_digest_emailed_at < datetime_add(^now, ^negative_interval, "day"),
       select: u
     )
-    |> Pleroma.Repo.all()
-    |> Enum.each(&PleromaJobQueue.enqueue(@queue_name, __MODULE__, [&1]))
+    |> Repo.all()
+    |> Enum.each(fn user ->
+      DigestEmailsWorker.enqueue("digest_email", %{"user_id" => user.id})
+    end)
   end
 
   @doc """
diff --git a/lib/pleroma/scheduled_activity_worker.ex b/lib/pleroma/daemons/scheduled_activity_daemon.ex
index 8578cab5e..aee5f723a 100644
--- a/lib/pleroma/scheduled_activity_worker.ex
+++ b/lib/pleroma/daemons/scheduled_activity_daemon.ex
@@ -2,7 +2,7 @@
 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.ScheduledActivityWorker do
+defmodule Pleroma.Daemons.ScheduledActivityDaemon do
   @moduledoc """
   Sends scheduled activities to the job queue.
   """
@@ -11,6 +11,7 @@ defmodule Pleroma.ScheduledActivityWorker do
   alias Pleroma.ScheduledActivity
   alias Pleroma.User
   alias Pleroma.Web.CommonAPI
+
   use GenServer
   require Logger
 
@@ -45,7 +46,10 @@ defmodule Pleroma.ScheduledActivityWorker do
   def handle_info(:perform, state) do
     ScheduledActivity.due_activities(@schedule_interval)
     |> Enum.each(fn scheduled_activity ->
-      PleromaJobQueue.enqueue(:scheduled_activities, __MODULE__, [:execute, scheduled_activity.id])
+      Pleroma.Workers.ScheduledActivityWorker.enqueue(
+        "execute",
+        %{"activity_id" => scheduled_activity.id}
+      )
     end)
 
     schedule_next()
diff --git a/lib/pleroma/delivery.ex b/lib/pleroma/delivery.ex
new file mode 100644
index 000000000..29a1e5a77
--- /dev/null
+++ b/lib/pleroma/delivery.ex
@@ -0,0 +1,51 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Delivery do
+  use Ecto.Schema
+
+  alias Pleroma.Delivery
+  alias Pleroma.FlakeId
+  alias Pleroma.Object
+  alias Pleroma.Repo
+  alias Pleroma.User
+  alias Pleroma.User
+
+  import Ecto.Changeset
+  import Ecto.Query
+
+  schema "deliveries" do
+    belongs_to(:user, User, type: FlakeId)
+    belongs_to(:object, Object)
+  end
+
+  def changeset(delivery, params \\ %{}) do
+    delivery
+    |> cast(params, [:user_id, :object_id])
+    |> validate_required([:user_id, :object_id])
+    |> foreign_key_constraint(:object_id)
+    |> foreign_key_constraint(:user_id)
+    |> unique_constraint(:user_id, name: :deliveries_user_id_object_id_index)
+  end
+
+  def create(object_id, user_id) do
+    %Delivery{}
+    |> changeset(%{user_id: user_id, object_id: object_id})
+    |> Repo.insert(on_conflict: :nothing)
+  end
+
+  def get(object_id, user_id) do
+    from(d in Delivery, where: d.user_id == ^user_id and d.object_id == ^object_id)
+    |> Repo.one()
+  end
+
+  # A hack because user delete activities have a fake id for whatever reason
+  # TODO: Get rid of this
+  def delete_all_by_object_id("pleroma:fake_object_id"), do: {0, []}
+
+  def delete_all_by_object_id(object_id) do
+    from(d in Delivery, where: d.object_id == ^object_id)
+    |> Repo.delete_all()
+  end
+end
diff --git a/lib/pleroma/docs/generator.ex b/lib/pleroma/docs/generator.ex
new file mode 100644
index 000000000..aa578eee2
--- /dev/null
+++ b/lib/pleroma/docs/generator.ex
@@ -0,0 +1,73 @@
+defmodule Pleroma.Docs.Generator do
+  @callback process(keyword()) :: {:ok, String.t()}
+
+  @spec process(module(), keyword()) :: {:ok, String.t()}
+  def process(implementation, descriptions) do
+    implementation.process(descriptions)
+  end
+
+  @spec uploaders_list() :: [module()]
+  def uploaders_list do
+    {:ok, modules} = :application.get_key(:pleroma, :modules)
+
+    Enum.filter(modules, fn module ->
+      name_as_list = Module.split(module)
+
+      List.starts_with?(name_as_list, ["Pleroma", "Uploaders"]) and
+        List.last(name_as_list) != "Uploader"
+    end)
+  end
+
+  @spec filters_list() :: [module()]
+  def filters_list do
+    {:ok, modules} = :application.get_key(:pleroma, :modules)
+
+    Enum.filter(modules, fn module ->
+      name_as_list = Module.split(module)
+
+      List.starts_with?(name_as_list, ["Pleroma", "Upload", "Filter"])
+    end)
+  end
+
+  @spec mrf_list() :: [module()]
+  def mrf_list do
+    {:ok, modules} = :application.get_key(:pleroma, :modules)
+
+    Enum.filter(modules, fn module ->
+      name_as_list = Module.split(module)
+
+      List.starts_with?(name_as_list, ["Pleroma", "Web", "ActivityPub", "MRF"]) and
+        length(name_as_list) > 4
+    end)
+  end
+
+  @spec richmedia_parsers() :: [module()]
+  def richmedia_parsers do
+    {:ok, modules} = :application.get_key(:pleroma, :modules)
+
+    Enum.filter(modules, fn module ->
+      name_as_list = Module.split(module)
+
+      List.starts_with?(name_as_list, ["Pleroma", "Web", "RichMedia", "Parsers"]) and
+        length(name_as_list) == 5
+    end)
+  end
+end
+
+defimpl Jason.Encoder, for: Tuple do
+  def encode(tuple, opts) do
+    Jason.Encode.list(Tuple.to_list(tuple), opts)
+  end
+end
+
+defimpl Jason.Encoder, for: [Regex, Function] do
+  def encode(term, opts) do
+    Jason.Encode.string(inspect(term), opts)
+  end
+end
+
+defimpl String.Chars, for: Regex do
+  def to_string(term) do
+    inspect(term)
+  end
+end
diff --git a/lib/pleroma/docs/json.ex b/lib/pleroma/docs/json.ex
new file mode 100644
index 000000000..18ba01d58
--- /dev/null
+++ b/lib/pleroma/docs/json.ex
@@ -0,0 +1,20 @@
+defmodule Pleroma.Docs.JSON do
+  @behaviour Pleroma.Docs.Generator
+
+  @spec process(keyword()) :: {:ok, String.t()}
+  def process(descriptions) do
+    config_path = "docs/generate_config.json"
+
+    with {:ok, file} <- File.open(config_path, [:write]),
+         json <- generate_json(descriptions),
+         :ok <- IO.write(file, json),
+         :ok <- File.close(file) do
+      {:ok, config_path}
+    end
+  end
+
+  @spec generate_json([keyword()]) :: String.t()
+  def generate_json(descriptions) do
+    Jason.encode!(descriptions)
+  end
+end
diff --git a/lib/pleroma/docs/markdown.ex b/lib/pleroma/docs/markdown.ex
new file mode 100644
index 000000000..68b106499
--- /dev/null
+++ b/lib/pleroma/docs/markdown.ex
@@ -0,0 +1,88 @@
+defmodule Pleroma.Docs.Markdown do
+  @behaviour Pleroma.Docs.Generator
+
+  @spec process(keyword()) :: {:ok, String.t()}
+  def process(descriptions) do
+    config_path = "docs/generated_config.md"
+    {:ok, file} = File.open(config_path, [:utf8, :write])
+    IO.write(file, "# Generated configuration\n")
+    IO.write(file, "Date of generation: #{Date.utc_today()}\n\n")
+
+    IO.write(
+      file,
+      "This file describe the configuration, it is recommended to edit the relevant `*.secret.exs` file instead of the others founds in the ``config`` directory.\n\n" <>
+        "If you run Pleroma with ``MIX_ENV=prod`` the file is ``prod.secret.exs``, otherwise it is ``dev.secret.exs``.\n\n"
+    )
+
+    for group <- descriptions do
+      if is_nil(group[:key]) do
+        IO.write(file, "## #{inspect(group[:group])}\n")
+      else
+        IO.write(file, "## #{inspect(group[:key])}\n")
+      end
+
+      IO.write(file, "#{group[:description]}\n")
+
+      for child <- group[:children] || [] do
+        print_child_header(file, child)
+
+        print_suggestions(file, child[:suggestions])
+
+        if child[:children] do
+          for subchild <- child[:children] do
+            print_child_header(file, subchild)
+
+            print_suggestions(file, subchild[:suggestions])
+          end
+        end
+      end
+
+      IO.write(file, "\n")
+    end
+
+    :ok = File.close(file)
+    {:ok, config_path}
+  end
+
+  defp print_child_header(file, %{key: key, type: type, description: description} = _child) do
+    IO.write(
+      file,
+      "- `#{inspect(key)}` (`#{inspect(type)}`): #{description}  \n"
+    )
+  end
+
+  defp print_child_header(file, %{key: key, type: type} = _child) do
+    IO.write(file, "- `#{inspect(key)}` (`#{inspect(type)}`)  \n")
+  end
+
+  defp print_suggestion(file, suggestion) when is_list(suggestion) do
+    IO.write(file, "  `#{inspect(suggestion)}`\n")
+  end
+
+  defp print_suggestion(file, suggestion) when is_function(suggestion) do
+    IO.write(file, "  `#{inspect(suggestion.())}`\n")
+  end
+
+  defp print_suggestion(file, suggestion, as_list \\ false) do
+    list_mark = if as_list, do: "- ", else: ""
+    IO.write(file, "  #{list_mark}`#{inspect(suggestion)}`\n")
+  end
+
+  defp print_suggestions(_file, nil), do: nil
+
+  defp print_suggestions(_file, ""), do: nil
+
+  defp print_suggestions(file, suggestions) do
+    if length(suggestions) > 1 do
+      IO.write(file, "Suggestions:\n")
+
+      for suggestion <- suggestions do
+        print_suggestion(file, suggestion, true)
+      end
+    else
+      IO.write(file, "  Suggestion: ")
+
+      print_suggestion(file, List.first(suggestions))
+    end
+  end
+end
diff --git a/lib/pleroma/emails/mailer.ex b/lib/pleroma/emails/mailer.ex
index 2e4657b7c..eb96f2e8b 100644
--- a/lib/pleroma/emails/mailer.ex
+++ b/lib/pleroma/emails/mailer.ex
@@ -9,6 +9,7 @@ defmodule Pleroma.Emails.Mailer do
   The module contains functions to delivery email using Swoosh.Mailer.
   """
 
+  alias Pleroma.Workers.MailerWorker
   alias Swoosh.DeliveryError
 
   @otp_app :pleroma
@@ -19,7 +20,12 @@ defmodule Pleroma.Emails.Mailer do
 
   @doc "add email to queue"
   def deliver_async(email, config \\ []) do
-    PleromaJobQueue.enqueue(:mailer, __MODULE__, [:deliver_async, email, config])
+    encoded_email =
+      email
+      |> :erlang.term_to_binary()
+      |> Base.encode64()
+
+    MailerWorker.enqueue("email", %{"encoded_email" => encoded_email, "config" => config})
   end
 
   @doc "callback to perform send email from queue"
diff --git a/lib/pleroma/flake_id.ex b/lib/pleroma/flake_id.ex
index 47d61ca5f..042cf8659 100644
--- a/lib/pleroma/flake_id.ex
+++ b/lib/pleroma/flake_id.ex
@@ -14,7 +14,7 @@ defmodule Pleroma.FlakeId do
 
   @type t :: binary
 
-  @behaviour Ecto.Type
+  use Ecto.Type
   use GenServer
   require Logger
   alias __MODULE__
diff --git a/lib/pleroma/instances/instance.ex b/lib/pleroma/instances/instance.ex
index 4d7ed4ca1..544c4b687 100644
--- a/lib/pleroma/instances/instance.ex
+++ b/lib/pleroma/instances/instance.ex
@@ -90,7 +90,7 @@ defmodule Pleroma.Instances.Instance do
   def set_unreachable(url_or_host, unreachable_since \\ nil)
 
   def set_unreachable(url_or_host, unreachable_since) when is_binary(url_or_host) do
-    unreachable_since = unreachable_since || DateTime.utc_now()
+    unreachable_since = parse_datetime(unreachable_since) || NaiveDateTime.utc_now()
     host = host(url_or_host)
     existing_record = Repo.get_by(Instance, %{host: host})
 
@@ -114,4 +114,10 @@ defmodule Pleroma.Instances.Instance do
   end
 
   def set_unreachable(_, _), do: {:error, nil}
+
+  defp parse_datetime(datetime) when is_binary(datetime) do
+    NaiveDateTime.from_iso8601(datetime)
+  end
+
+  defp parse_datetime(datetime), do: datetime
 end
diff --git a/lib/pleroma/notification.ex b/lib/pleroma/notification.ex
index b7c880c51..8012389ac 100644
--- a/lib/pleroma/notification.ex
+++ b/lib/pleroma/notification.ex
@@ -210,8 +210,10 @@ defmodule Pleroma.Notification do
     unless skip?(activity, user) do
       notification = %Notification{user_id: user.id, activity: activity}
       {:ok, notification} = Repo.insert(notification)
-      Streamer.stream("user", notification)
-      Streamer.stream("user:notification", notification)
+
+      ["user", "user:notification"]
+      |> Streamer.stream(notification)
+
       Push.send(notification)
       notification
     end
diff --git a/lib/pleroma/object.ex b/lib/pleroma/object.ex
index 5033798ae..3fa407931 100644
--- a/lib/pleroma/object.ex
+++ b/lib/pleroma/object.ex
@@ -38,6 +38,24 @@ defmodule Pleroma.Object do
   def get_by_id(nil), do: nil
   def get_by_id(id), do: Repo.get(Object, id)
 
+  def get_by_id_and_maybe_refetch(id, opts \\ []) do
+    %{updated_at: updated_at} = object = get_by_id(id)
+
+    if opts[:interval] &&
+         NaiveDateTime.diff(NaiveDateTime.utc_now(), updated_at) > opts[:interval] do
+      case Fetcher.refetch_object(object) do
+        {:ok, %Object{} = object} ->
+          object
+
+        e ->
+          Logger.error("Couldn't refresh #{object.data["id"]}:\n#{inspect(e)}")
+          object
+      end
+    else
+      object
+    end
+  end
+
   def get_by_ap_id(nil), do: nil
 
   def get_by_ap_id(ap_id) do
diff --git a/lib/pleroma/object/fetcher.ex b/lib/pleroma/object/fetcher.ex
index 2217d1eb3..5e064fd87 100644
--- a/lib/pleroma/object/fetcher.ex
+++ b/lib/pleroma/object/fetcher.ex
@@ -6,19 +6,40 @@ defmodule Pleroma.Object.Fetcher do
   alias Pleroma.HTTP
   alias Pleroma.Object
   alias Pleroma.Object.Containment
+  alias Pleroma.Repo
   alias Pleroma.Signature
   alias Pleroma.Web.ActivityPub.InternalFetchActor
   alias Pleroma.Web.ActivityPub.Transmogrifier
   alias Pleroma.Web.OStatus
 
   require Logger
+  require Pleroma.Constants
 
-  @spec reinject_object(map()) :: {:ok, Object.t()} | {:error, any()}
-  defp reinject_object(data) do
+  defp touch_changeset(changeset) do
+    updated_at =
+      NaiveDateTime.utc_now()
+      |> NaiveDateTime.truncate(:second)
+
+    Ecto.Changeset.put_change(changeset, :updated_at, updated_at)
+  end
+
+  defp maybe_reinject_internal_fields(data, %{data: %{} = old_data}) do
+    internal_fields = Map.take(old_data, Pleroma.Constants.object_internal_fields())
+
+    Map.merge(data, internal_fields)
+  end
+
+  defp maybe_reinject_internal_fields(data, _), do: data
+
+  @spec reinject_object(struct(), map()) :: {:ok, Object.t()} | {:error, any()}
+  defp reinject_object(struct, data) do
     Logger.debug("Reinjecting object #{data["id"]}")
 
     with data <- Transmogrifier.fix_object(data),
-         {:ok, object} <- Object.create(data) do
+         data <- maybe_reinject_internal_fields(data, struct),
+         changeset <- Object.change(struct, %{data: data}),
+         changeset <- touch_changeset(changeset),
+         {:ok, object} <- Repo.insert_or_update(changeset) do
       {:ok, object}
     else
       e ->
@@ -27,6 +48,17 @@ defmodule Pleroma.Object.Fetcher do
     end
   end
 
+  def refetch_object(%Object{data: %{"id" => id}} = object) do
+    with {:local, false} <- {:local, String.starts_with?(id, Pleroma.Web.base_url() <> "/")},
+         {:ok, data} <- fetch_and_contain_remote_object_from_id(id),
+         {:ok, object} <- reinject_object(object, data) do
+      {:ok, object}
+    else
+      {:local, true} -> object
+      e -> {:error, e}
+    end
+  end
+
   # TODO:
   # This will create a Create activity, which we need internally at the moment.
   def fetch_object_from_id(id, options \\ []) do
@@ -47,7 +79,7 @@ defmodule Pleroma.Object.Fetcher do
         {:reject, nil}
 
       {:object, data, nil} ->
-        reinject_object(data)
+        reinject_object(%Object{}, data)
 
       {:normalize, object = %Object{}} ->
         {:ok, object}
@@ -65,8 +97,6 @@ defmodule Pleroma.Object.Fetcher do
           e -> e
         end
     end
-
-    # end
   end
 
   defp prepare_activity_params(data) do
diff --git a/lib/pleroma/plugs/cache.ex b/lib/pleroma/plugs/cache.ex
index a81a861d0..50b534e7b 100644
--- a/lib/pleroma/plugs/cache.ex
+++ b/lib/pleroma/plugs/cache.ex
@@ -20,6 +20,7 @@ defmodule Pleroma.Plugs.Cache do
 
   - `ttl`:  An expiration time (time-to-live). This value should be in milliseconds or `nil` to disable expiration. Defaults to `nil`.
   - `query_params`: Take URL query string into account (`true`), ignore it (`false`) or limit to specific params only (list). Defaults to `true`.
+  - `tracking_fun`: A function that is called on successfull responses, no matter if the request is cached or not. It should accept a conn as the first argument and the value assigned to `tracking_fun_data` as the second.
 
   Additionally, you can overwrite the TTL inside a controller action by assigning `cache_ttl` to the connection struct:
 
@@ -56,6 +57,11 @@ defmodule Pleroma.Plugs.Cache do
       {:ok, nil} ->
         cache_resp(conn, opts)
 
+      {:ok, {content_type, body, tracking_fun_data}} ->
+        conn = opts.tracking_fun.(conn, tracking_fun_data)
+
+        send_cached(conn, {content_type, body})
+
       {:ok, record} ->
         send_cached(conn, record)
 
@@ -88,9 +94,17 @@ defmodule Pleroma.Plugs.Cache do
         ttl = Map.get(conn.assigns, :cache_ttl, opts.ttl)
         key = cache_key(conn, opts)
         content_type = content_type(conn)
-        record = {content_type, body}
 
-        Cachex.put(:web_resp_cache, key, record, ttl: ttl)
+        conn =
+          unless opts[:tracking_fun] do
+            Cachex.put(:web_resp_cache, key, {content_type, body}, ttl: ttl)
+            conn
+          else
+            tracking_fun_data = Map.get(conn.assigns, :tracking_fun_data, nil)
+            Cachex.put(:web_resp_cache, key, {content_type, body, tracking_fun_data}, ttl: ttl)
+
+            opts.tracking_fun.(conn, tracking_fun_data)
+          end
 
         put_resp_header(conn, "x-cache", "MISS from Pleroma")
 
diff --git a/lib/pleroma/plugs/http_signature.ex b/lib/pleroma/plugs/http_signature.ex
index d87fa52fa..23d22a712 100644
--- a/lib/pleroma/plugs/http_signature.ex
+++ b/lib/pleroma/plugs/http_signature.ex
@@ -15,7 +15,8 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
   end
 
   def call(conn, _opts) do
-    [signature | _] = get_req_header(conn, "signature")
+    headers = get_req_header(conn, "signature")
+    signature = Enum.at(headers, 0)
 
     if signature do
       # set (request-target) header to the appropriate value
diff --git a/lib/pleroma/scheduler.ex b/lib/pleroma/scheduler.ex
new file mode 100644
index 000000000..d84cd99ad
--- /dev/null
+++ b/lib/pleroma/scheduler.ex
@@ -0,0 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Scheduler do
+  use Quantum.Scheduler, otp_app: :pleroma
+end
diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
index 3aa245f2a..fb1f24254 100644
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@@ -11,6 +11,7 @@ defmodule Pleroma.User do
   alias Comeonin.Pbkdf2
   alias Ecto.Multi
   alias Pleroma.Activity
+  alias Pleroma.Delivery
   alias Pleroma.Keys
   alias Pleroma.Notification
   alias Pleroma.Object
@@ -27,6 +28,7 @@ defmodule Pleroma.User do
   alias Pleroma.Web.OStatus
   alias Pleroma.Web.RelMe
   alias Pleroma.Web.Websub
+  alias Pleroma.Workers.BackgroundWorker
 
   require Logger
 
@@ -61,6 +63,7 @@ defmodule Pleroma.User do
     field(:last_digest_emailed_at, :naive_datetime)
     has_many(:notifications, Notification)
     has_many(:registrations, Registration)
+    has_many(:deliveries, Delivery)
     embeds_one(:info, User.Info)
 
     timestamps()
@@ -147,6 +150,7 @@ defmodule Pleroma.User do
     Cachex.fetch!(:user_cache, key, fn _ -> {:commit, follow_state(user, target)} end)
   end
 
+  @spec set_follow_state_cache(String.t(), String.t(), String.t()) :: {:ok | :error, boolean()}
   def set_follow_state_cache(user_ap_id, target_ap_id, state) do
     Cachex.put(
       :user_cache,
@@ -174,11 +178,25 @@ defmodule Pleroma.User do
     |> Repo.aggregate(:count, :id)
   end
 
+  defp truncate_if_exists(params, key, max_length) do
+    if Map.has_key?(params, key) and is_binary(params[key]) do
+      {value, _chopped} = String.split_at(params[key], max_length)
+      Map.put(params, key, value)
+    else
+      params
+    end
+  end
+
   def remote_user_creation(params) do
     bio_limit = Pleroma.Config.get([:instance, :user_bio_length], 5000)
     name_limit = Pleroma.Config.get([:instance, :user_name_length], 100)
 
-    params = Map.put(params, :info, params[:info] || %{})
+    params =
+      params
+      |> Map.put(:info, params[:info] || %{})
+      |> truncate_if_exists(:name, name_limit)
+      |> truncate_if_exists(:bio, bio_limit)
+
     info_cng = User.Info.remote_user_creation(%User.Info{}, params[:info])
 
     changes =
@@ -633,8 +651,9 @@ defmodule Pleroma.User do
   end
 
   @doc "Fetch some posts when the user has just been federated with"
-  def fetch_initial_posts(user),
-    do: PleromaJobQueue.enqueue(:background, __MODULE__, [:fetch_initial_posts, user])
+  def fetch_initial_posts(user) do
+    BackgroundWorker.enqueue("fetch_initial_posts", %{"user_id" => user.id})
+  end
 
   @spec get_followers_query(User.t(), pos_integer() | nil) :: Ecto.Query.t()
   def get_followers_query(%User{} = user, nil) do
@@ -1064,7 +1083,7 @@ defmodule Pleroma.User do
   end
 
   def deactivate_async(user, status \\ true) do
-    PleromaJobQueue.enqueue(:background, __MODULE__, [:deactivate_async, user, status])
+    BackgroundWorker.enqueue("deactivate_user", %{"user_id" => user.id, "status" => status})
   end
 
   def deactivate(%User{} = user, status \\ true) do
@@ -1092,9 +1111,9 @@ defmodule Pleroma.User do
     |> update_and_set_cache()
   end
 
-  @spec delete(User.t()) :: :ok
-  def delete(%User{} = user),
-    do: PleromaJobQueue.enqueue(:background, __MODULE__, [:delete, user])
+  def delete(%User{} = user) do
+    BackgroundWorker.enqueue("delete_user", %{"user_id" => user.id})
+  end
 
   @spec perform(atom(), User.t()) :: {:ok, User.t()}
   def perform(:delete, %User{} = user) do
@@ -1201,25 +1220,24 @@ defmodule Pleroma.User do
     Repo.all(query)
   end
 
-  def blocks_import(%User{} = blocker, blocked_identifiers) when is_list(blocked_identifiers),
-    do:
-      PleromaJobQueue.enqueue(:background, __MODULE__, [
-        :blocks_import,
-        blocker,
-        blocked_identifiers
-      ])
+  def blocks_import(%User{} = blocker, blocked_identifiers) when is_list(blocked_identifiers) do
+    BackgroundWorker.enqueue("blocks_import", %{
+      "blocker_id" => blocker.id,
+      "blocked_identifiers" => blocked_identifiers
+    })
+  end
 
-  def follow_import(%User{} = follower, followed_identifiers) when is_list(followed_identifiers),
-    do:
-      PleromaJobQueue.enqueue(:background, __MODULE__, [
-        :follow_import,
-        follower,
-        followed_identifiers
-      ])
+  def follow_import(%User{} = follower, followed_identifiers)
+      when is_list(followed_identifiers) do
+    BackgroundWorker.enqueue("follow_import", %{
+      "follower_id" => follower.id,
+      "followed_identifiers" => followed_identifiers
+    })
+  end
 
   def delete_user_activities(%User{ap_id: ap_id} = user) do
     ap_id
-    |> Activity.query_by_actor()
+    |> Activity.Queries.by_actor()
     |> RepoStreamer.chunk_stream(50)
     |> Stream.each(fn activities ->
       Enum.each(activities, &delete_activity(&1))
@@ -1624,4 +1642,25 @@ defmodule Pleroma.User do
   def is_internal_user?(%User{nickname: nil}), do: true
   def is_internal_user?(%User{local: true, nickname: "internal." <> _}), do: true
   def is_internal_user?(_), do: false
+
+  # A hack because user delete activities have a fake id for whatever reason
+  # TODO: Get rid of this
+  def get_delivered_users_by_object_id("pleroma:fake_object_id"), do: []
+
+  def get_delivered_users_by_object_id(object_id) do
+    from(u in User,
+      inner_join: delivery in assoc(u, :deliveries),
+      where: delivery.object_id == ^object_id
+    )
+    |> Repo.all()
+  end
+
+  def change_email(user, email) do
+    user
+    |> cast(%{email: email}, [:email])
+    |> validate_required([:email])
+    |> unique_constraint(:email)
+    |> validate_format(:email, @email_regex)
+    |> update_and_set_cache()
+  end
 end
diff --git a/lib/pleroma/user/info.ex b/lib/pleroma/user/info.ex
index 779bfbc18..b150a57cd 100644
--- a/lib/pleroma/user/info.ex
+++ b/lib/pleroma/user/info.ex
@@ -41,6 +41,8 @@ defmodule Pleroma.User.Info do
     field(:topic, :string, default: nil)
     field(:hub, :string, default: nil)
     field(:salmon, :string, default: nil)
+    field(:hide_followers_count, :boolean, default: false)
+    field(:hide_follows_count, :boolean, default: false)
     field(:hide_followers, :boolean, default: false)
     field(:hide_follows, :boolean, default: false)
     field(:hide_favorites, :boolean, default: true)
@@ -242,6 +244,13 @@ defmodule Pleroma.User.Info do
   end
 
   def remote_user_creation(info, params) do
+    params =
+      if Map.has_key?(params, :fields) do
+        Map.put(params, :fields, Enum.map(params[:fields], &truncate_field/1))
+      else
+        params
+      end
+
     info
     |> cast(params, [
       :ap_enabled,
@@ -255,6 +264,8 @@ defmodule Pleroma.User.Info do
       :salmon,
       :hide_followers,
       :hide_follows,
+      :hide_followers_count,
+      :hide_follows_count,
       :follower_count,
       :fields,
       :following_count
@@ -274,7 +285,9 @@ defmodule Pleroma.User.Info do
       :following_count,
       :hide_follows,
       :fields,
-      :hide_followers
+      :hide_followers,
+      :hide_followers_count,
+      :hide_follows_count
     ])
     |> validate_fields(remote?)
   end
@@ -288,6 +301,8 @@ defmodule Pleroma.User.Info do
       :banner,
       :hide_follows,
       :hide_followers,
+      :hide_followers_count,
+      :hide_follows_count,
       :hide_favorites,
       :background,
       :show_role,
@@ -326,6 +341,16 @@ defmodule Pleroma.User.Info do
 
   defp valid_field?(_), do: false
 
+  defp truncate_field(%{"name" => name, "value" => value}) do
+    {name, _chopped} =
+      String.split_at(name, Pleroma.Config.get([:instance, :account_field_name_length], 255))
+
+    {value, _chopped} =
+      String.split_at(value, Pleroma.Config.get([:instance, :account_field_value_length], 255))
+
+    %{"name" => name, "value" => value}
+  end
+
   @spec confirmation_changeset(Info.t(), keyword()) :: Changeset.t()
   def confirmation_changeset(info, opts) do
     need_confirmation? = Keyword.get(opts, :need_confirmation)
@@ -441,7 +466,9 @@ defmodule Pleroma.User.Info do
       :hide_followers,
       :hide_follows,
       :follower_count,
-      :following_count
+      :following_count,
+      :hide_followers_count,
+      :hide_follows_count
     ])
   end
 end
diff --git a/lib/pleroma/user/query.ex b/lib/pleroma/user/query.ex
index f9bcc9e19..2baf016cf 100644
--- a/lib/pleroma/user/query.ex
+++ b/lib/pleroma/user/query.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.User.Query do
diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index d23ec66ac..e1e90d667 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -4,6 +4,7 @@
 
 defmodule Pleroma.Web.ActivityPub.ActivityPub do
   alias Pleroma.Activity
+  alias Pleroma.Activity.Ir.Topics
   alias Pleroma.Config
   alias Pleroma.Conversation
   alias Pleroma.Notification
@@ -16,7 +17,9 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.MRF
   alias Pleroma.Web.ActivityPub.Transmogrifier
+  alias Pleroma.Web.Streamer
   alias Pleroma.Web.WebFinger
+  alias Pleroma.Workers.BackgroundWorker
 
   import Ecto.Query
   import Pleroma.Web.ActivityPub.Utils
@@ -145,7 +148,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
           activity
         end
 
-      PleromaJobQueue.enqueue(:background, Pleroma.Web.RichMedia.Helpers, [:fetch, activity])
+      BackgroundWorker.enqueue("fetch_data_for_activity", %{"activity_id" => activity.id})
 
       Notification.create_notifications(activity)
 
@@ -186,9 +189,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       participations
       |> Repo.preload(:user)
 
-    Enum.each(participations, fn participation ->
-      Pleroma.Web.Streamer.stream("participation", participation)
-    end)
+    Streamer.stream("participation", participations)
   end
 
   def stream_out_participations(%Object{data: %{"context" => context}}, user) do
@@ -207,41 +208,15 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   def stream_out_participations(_, _), do: :noop
 
-  def stream_out(activity) do
-    if activity.data["type"] in ["Create", "Announce", "Delete"] do
-      object = Object.normalize(activity)
-      # Do not stream out poll replies
-      unless object.data["type"] == "Answer" do
-        Pleroma.Web.Streamer.stream("user", activity)
-        Pleroma.Web.Streamer.stream("list", activity)
-
-        if get_visibility(activity) == "public" do
-          Pleroma.Web.Streamer.stream("public", activity)
-
-          if activity.local do
-            Pleroma.Web.Streamer.stream("public:local", activity)
-          end
-
-          if activity.data["type"] in ["Create"] do
-            object.data
-            |> Map.get("tag", [])
-            |> Enum.filter(fn tag -> is_bitstring(tag) end)
-            |> Enum.each(fn tag -> Pleroma.Web.Streamer.stream("hashtag:" <> tag, activity) end)
-
-            if object.data["attachment"] != [] do
-              Pleroma.Web.Streamer.stream("public:media", activity)
-
-              if activity.local do
-                Pleroma.Web.Streamer.stream("public:local:media", activity)
-              end
-            end
-          end
-        else
-          if get_visibility(activity) == "direct",
-            do: Pleroma.Web.Streamer.stream("direct", activity)
-        end
-      end
-    end
+  def stream_out(%Activity{data: %{"type" => data_type}} = activity)
+      when data_type in ["Create", "Announce", "Delete"] do
+    activity
+    |> Topics.get_activity_topics()
+    |> Streamer.stream(activity)
+  end
+
+  def stream_out(_activity) do
+    :noop
   end
 
   def create(%{to: to, actor: actor, context: context, object: object} = params, fake \\ false) do
@@ -435,6 +410,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  @spec block(User.t(), User.t(), String.t() | nil, boolean) :: {:ok, Activity.t() | nil}
   def block(blocker, blocked, activity_id \\ nil, local \\ true) do
     outgoing_blocks = Config.get([:activitypub, :outgoing_blocks])
     unfollow_blocked = Config.get([:activitypub, :unfollow_blocked])
@@ -463,10 +439,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  @spec flag(map()) :: {:ok, Activity.t()} | any
   def flag(
         %{
           actor: actor,
-          context: context,
+          context: _context,
           account: account,
           statuses: statuses,
           content: content
@@ -478,14 +455,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
     additional = params[:additional] || %{}
 
-    params = %{
-      actor: actor,
-      context: context,
-      account: account,
-      statuses: statuses,
-      content: content
-    }
-
     additional =
       if forward do
         Map.merge(additional, %{"to" => [], "cc" => [account.ap_id]})
diff --git a/lib/pleroma/web/activity_pub/activity_pub_controller.ex b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
index 705dbc1c2..01b34fb1d 100644
--- a/lib/pleroma/web/activity_pub/activity_pub_controller.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
@@ -6,6 +6,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
   use Pleroma.Web, :controller
 
   alias Pleroma.Activity
+  alias Pleroma.Delivery
   alias Pleroma.Object
   alias Pleroma.Object.Fetcher
   alias Pleroma.User
@@ -23,7 +24,12 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
 
   action_fallback(:errors)
 
-  plug(Pleroma.Plugs.Cache, [query_params: false] when action in [:activity, :object])
+  plug(
+    Pleroma.Plugs.Cache,
+    [query_params: false, tracking_fun: &__MODULE__.track_object_fetch/2]
+    when action in [:activity, :object]
+  )
+
   plug(Pleroma.Web.FederatingPlug when action in [:inbox, :relay])
   plug(:set_requester_reachable when action in [:inbox])
   plug(:relay_active? when action in [:relay])
@@ -54,6 +60,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
          %Object{} = object <- Object.get_cached_by_ap_id(ap_id),
          {_, true} <- {:public?, Visibility.is_public?(object)} do
       conn
+      |> assign(:tracking_fun_data, object.id)
       |> set_cache_ttl_for(object)
       |> put_resp_content_type("application/activity+json")
       |> put_view(ObjectView)
@@ -64,6 +71,16 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
     end
   end
 
+  def track_object_fetch(conn, nil), do: conn
+
+  def track_object_fetch(conn, object_id) do
+    with %{assigns: %{user: %User{id: user_id}}} <- conn do
+      Delivery.create(object_id, user_id)
+    end
+
+    conn
+  end
+
   def object_likes(conn, %{"uuid" => uuid, "page" => page}) do
     with ap_id <- o_status_url(conn, :object, uuid),
          %Object{} = object <- Object.get_cached_by_ap_id(ap_id),
@@ -99,6 +116,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
          %Activity{} = activity <- Activity.normalize(ap_id),
          {_, true} <- {:public?, Visibility.is_public?(activity)} do
       conn
+      |> maybe_set_tracking_data(activity)
       |> set_cache_ttl_for(activity)
       |> put_resp_content_type("application/activity+json")
       |> put_view(ObjectView)
@@ -109,6 +127,13 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
     end
   end
 
+  defp maybe_set_tracking_data(conn, %Activity{data: %{"type" => "Create"}} = activity) do
+    object_id = Object.normalize(activity).id
+    assign(conn, :tracking_fun_data, object_id)
+  end
+
+  defp maybe_set_tracking_data(conn, _activity), do: conn
+
   defp set_cache_ttl_for(conn, %Activity{object: object}) do
     set_cache_ttl_for(conn, object)
   end
diff --git a/lib/pleroma/web/activity_pub/mrf/mediaproxy_warming_policy.ex b/lib/pleroma/web/activity_pub/mrf/mediaproxy_warming_policy.ex
index a179dd54d..26b8539fe 100644
--- a/lib/pleroma/web/activity_pub/mrf/mediaproxy_warming_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/mediaproxy_warming_policy.ex
@@ -8,6 +8,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy do
 
   alias Pleroma.HTTP
   alias Pleroma.Web.MediaProxy
+  alias Pleroma.Workers.BackgroundWorker
 
   require Logger
 
@@ -30,7 +31,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy do
         url
         |> Enum.each(fn
           %{"href" => href} ->
-            PleromaJobQueue.enqueue(:background, __MODULE__, [:prefetch, href])
+            BackgroundWorker.enqueue("media_proxy_prefetch", %{"url" => href})
 
           x ->
             Logger.debug("Unhandled attachment URL object #{inspect(x)}")
@@ -46,7 +47,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy do
         %{"type" => "Create", "object" => %{"attachment" => attachments} = _object} = message
       )
       when is_list(attachments) and length(attachments) > 0 do
-    PleromaJobQueue.enqueue(:background, __MODULE__, [:preload, message])
+    BackgroundWorker.enqueue("media_proxy_preload", %{"message" => message})
 
     {:ok, message}
   end
diff --git a/lib/pleroma/web/activity_pub/publisher.ex b/lib/pleroma/web/activity_pub/publisher.ex
index c97405690..114251b24 100644
--- a/lib/pleroma/web/activity_pub/publisher.ex
+++ b/lib/pleroma/web/activity_pub/publisher.ex
@@ -5,8 +5,10 @@
 defmodule Pleroma.Web.ActivityPub.Publisher do
   alias Pleroma.Activity
   alias Pleroma.Config
+  alias Pleroma.Delivery
   alias Pleroma.HTTP
   alias Pleroma.Instances
+  alias Pleroma.Object
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.Relay
   alias Pleroma.Web.ActivityPub.Transmogrifier
@@ -84,6 +86,15 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
     end
   end
 
+  def publish_one(%{actor_id: actor_id} = params) do
+    actor = User.get_cached_by_id(actor_id)
+
+    params
+    |> Map.delete(:actor_id)
+    |> Map.put(:actor, actor)
+    |> publish_one()
+  end
+
   defp should_federate?(inbox, public) do
     if public do
       true
@@ -107,7 +118,18 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
         {:ok, []}
       end
 
-    Pleroma.Web.Salmon.remote_users(actor, activity) ++ followers
+    fetchers =
+      with %Activity{data: %{"type" => "Delete"}} <- activity,
+           %Object{id: object_id} <- Object.normalize(activity),
+           fetchers <- User.get_delivered_users_by_object_id(object_id),
+           _ <- Delivery.delete_all_by_object_id(object_id) do
+        fetchers
+      else
+        _ ->
+          []
+      end
+
+    Pleroma.Web.Salmon.remote_users(actor, activity) ++ followers ++ fetchers
   end
 
   defp get_cc_ap_ids(ap_id, recipients) do
@@ -159,7 +181,8 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
   Publishes an activity with BCC to all relevant peers.
   """
 
-  def publish(actor, %{data: %{"bcc" => bcc}} = activity) when is_list(bcc) and bcc != [] do
+  def publish(%User{} = actor, %{data: %{"bcc" => bcc}} = activity)
+      when is_list(bcc) and bcc != [] do
     public = is_public?(activity)
     {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
 
@@ -186,7 +209,7 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
       Pleroma.Web.Federator.Publisher.enqueue_one(__MODULE__, %{
         inbox: inbox,
         json: json,
-        actor: actor,
+        actor_id: actor.id,
         id: activity.data["id"],
         unreachable_since: unreachable_since
       })
@@ -221,7 +244,7 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
         %{
           inbox: inbox,
           json: json,
-          actor: actor,
+          actor_id: actor.id,
           id: activity.data["id"],
           unreachable_since: unreachable_since
         }
diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index 5b8e7f8f1..dad2fead8 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -15,6 +15,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.ActivityPub.Visibility
   alias Pleroma.Web.Federator
+  alias Pleroma.Workers.TransmogrifierWorker
 
   import Ecto.Query
 
@@ -941,15 +942,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   defp strip_internal_fields(object) do
     object
-    |> Map.drop([
-      "likes",
-      "like_count",
-      "announcements",
-      "announcement_count",
-      "emoji",
-      "context_id",
-      "deleted_activity_id"
-    ])
+    |> Map.drop(Pleroma.Constants.object_internal_fields())
   end
 
   defp strip_internal_tags(%{"tag" => tags} = object) do
@@ -1009,9 +1002,9 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     with %User{local: false} = user <- User.get_cached_by_ap_id(ap_id),
          {:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id),
          already_ap <- User.ap_enabled?(user),
-         {:ok, user} <- user |> User.upgrade_changeset(data) |> User.update_and_set_cache() do
-      unless already_ap do
-        PleromaJobQueue.enqueue(:transmogrifier, __MODULE__, [:user_upgrade, user])
+         {:ok, user} <- upgrade_user(user, data) do
+      if not already_ap do
+        TransmogrifierWorker.enqueue("user_upgrade", %{"user_id" => user.id})
       end
 
       {:ok, user}
@@ -1021,6 +1014,12 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
+  defp upgrade_user(user, data) do
+    user
+    |> User.upgrade_changeset(data, true)
+    |> User.update_and_set_cache()
+  end
+
   def maybe_retire_websub(ap_id) do
     # some sanity checks
     if is_binary(ap_id) && String.length(ap_id) > 8 do
diff --git a/lib/pleroma/web/activity_pub/utils.ex b/lib/pleroma/web/activity_pub/utils.ex
index c9c0c3763..30628a793 100644
--- a/lib/pleroma/web/activity_pub/utils.ex
+++ b/lib/pleroma/web/activity_pub/utils.ex
@@ -33,50 +33,40 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     Map.put(params, "actor", get_ap_id(params["actor"]))
   end
 
-  def determine_explicit_mentions(%{"tag" => tag} = _object) when is_list(tag) do
-    tag
-    |> Enum.filter(fn x -> is_map(x) end)
-    |> Enum.filter(fn x -> x["type"] == "Mention" end)
-    |> Enum.map(fn x -> x["href"] end)
+  @spec determine_explicit_mentions(map()) :: map()
+  def determine_explicit_mentions(%{"tag" => tag} = _) when is_list(tag) do
+    Enum.flat_map(tag, fn
+      %{"type" => "Mention", "href" => href} -> [href]
+      _ -> []
+    end)
   end
 
   def determine_explicit_mentions(%{"tag" => tag} = object) when is_map(tag) do
-    Map.put(object, "tag", [tag])
+    object
+    |> Map.put("tag", [tag])
     |> determine_explicit_mentions()
   end
 
   def determine_explicit_mentions(_), do: []
 
+  @spec recipient_in_collection(any(), any()) :: boolean()
   defp recipient_in_collection(ap_id, coll) when is_binary(coll), do: ap_id == coll
   defp recipient_in_collection(ap_id, coll) when is_list(coll), do: ap_id in coll
   defp recipient_in_collection(_, _), do: false
 
+  @spec recipient_in_message(User.t(), User.t(), map()) :: boolean()
   def recipient_in_message(%User{ap_id: ap_id} = recipient, %User{} = actor, params) do
-    cond do
-      recipient_in_collection(ap_id, params["to"]) ->
-        true
-
-      recipient_in_collection(ap_id, params["cc"]) ->
-        true
-
-      recipient_in_collection(ap_id, params["bto"]) ->
-        true
-
-      recipient_in_collection(ap_id, params["bcc"]) ->
-        true
+    addresses = [params["to"], params["cc"], params["bto"], params["bcc"]]
 
+    cond do
+      Enum.any?(addresses, &recipient_in_collection(ap_id, &1)) -> true
       # if the message is unaddressed at all, then assume it is directly addressed
       # to the recipient
-      !params["to"] && !params["cc"] && !params["bto"] && !params["bcc"] ->
-        true
-
+      Enum.all?(addresses, &is_nil(&1)) -> true
       # if the message is sent from somebody the user is following, then assume it
       # is addressed to the recipient
-      User.following?(recipient, actor) ->
-        true
-
-      true ->
-        false
+      User.following?(recipient, actor) -> true
+      true -> false
     end
   end
 
@@ -85,15 +75,13 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   defp extract_list(_), do: []
 
   def maybe_splice_recipient(ap_id, params) do
-    need_splice =
+    need_splice? =
       !recipient_in_collection(ap_id, params["to"]) &&
         !recipient_in_collection(ap_id, params["cc"])
 
-    cc_list = extract_list(params["cc"])
-
-    if need_splice do
-      params
-      |> Map.put("cc", [ap_id | cc_list])
+    if need_splice? do
+      cc_list = extract_list(params["cc"])
+      Map.put(params, "cc", [ap_id | cc_list])
     else
       params
     end
@@ -139,7 +127,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "object" => object
     }
 
-    Notification.get_notified_from_activity(%Activity{data: fake_create_activity}, false)
+    get_notified_from_object(fake_create_activity)
   end
 
   def get_notified_from_object(object) do
@@ -169,14 +157,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   @spec maybe_federate(any()) :: :ok
   def maybe_federate(%Activity{local: true} = activity) do
     if Pleroma.Config.get!([:instance, :federating]) do
-      priority =
-        case activity.data["type"] do
-          "Delete" -> 10
-          "Create" -> 1
-          _ -> 5
-        end
-
-      Pleroma.Web.Federator.publish(activity, priority)
+      Pleroma.Web.Federator.publish(activity)
     end
 
     :ok
@@ -188,63 +169,66 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   Adds an id and a published data if they aren't there,
   also adds it to an included object
   """
-  def lazy_put_activity_defaults(map, fake \\ false) do
-    map =
-      unless fake do
-        %{data: %{"id" => context}, id: context_id} = create_context(map["context"])
-
-        map
-        |> Map.put_new_lazy("id", &generate_activity_id/0)
-        |> Map.put_new_lazy("published", &make_date/0)
-        |> Map.put_new("context", context)
-        |> Map.put_new("context_id", context_id)
-      else
-        map
-        |> Map.put_new("id", "pleroma:fakeid")
-        |> Map.put_new_lazy("published", &make_date/0)
-        |> Map.put_new("context", "pleroma:fakecontext")
-        |> Map.put_new("context_id", -1)
-      end
+  @spec lazy_put_activity_defaults(map(), boolean) :: map()
+  def lazy_put_activity_defaults(map, fake? \\ false)
 
-    if is_map(map["object"]) do
-      object = lazy_put_object_defaults(map["object"], map, fake)
-      %{map | "object" => object}
-    else
-      map
-    end
+  def lazy_put_activity_defaults(map, true) do
+    map
+    |> Map.put_new("id", "pleroma:fakeid")
+    |> Map.put_new_lazy("published", &make_date/0)
+    |> Map.put_new("context", "pleroma:fakecontext")
+    |> Map.put_new("context_id", -1)
+    |> lazy_put_object_defaults(true)
   end
 
-  @doc """
-  Adds an id and published date if they aren't there.
-  """
-  def lazy_put_object_defaults(map, activity \\ %{}, fake)
+  def lazy_put_activity_defaults(map, _fake?) do
+    %{data: %{"id" => context}, id: context_id} = create_context(map["context"])
 
-  def lazy_put_object_defaults(map, activity, true = _fake) do
     map
+    |> Map.put_new_lazy("id", &generate_activity_id/0)
     |> Map.put_new_lazy("published", &make_date/0)
-    |> Map.put_new("id", "pleroma:fake_object_id")
-    |> Map.put_new("context", activity["context"])
-    |> Map.put_new("fake", true)
-    |> Map.put_new("context_id", activity["context_id"])
+    |> Map.put_new("context", context)
+    |> Map.put_new("context_id", context_id)
+    |> lazy_put_object_defaults(false)
   end
 
-  def lazy_put_object_defaults(map, activity, _fake) do
-    map
-    |> Map.put_new_lazy("id", &generate_object_id/0)
-    |> Map.put_new_lazy("published", &make_date/0)
-    |> Map.put_new("context", activity["context"])
-    |> Map.put_new("context_id", activity["context_id"])
+  # Adds an id and published date if they aren't there.
+  #
+  @spec lazy_put_object_defaults(map(), boolean()) :: map()
+  defp lazy_put_object_defaults(%{"object" => map} = activity, true)
+       when is_map(map) do
+    object =
+      map
+      |> Map.put_new("id", "pleroma:fake_object_id")
+      |> Map.put_new_lazy("published", &make_date/0)
+      |> Map.put_new("context", activity["context"])
+      |> Map.put_new("context_id", activity["context_id"])
+      |> Map.put_new("fake", true)
+
+    %{activity | "object" => object}
   end
 
+  defp lazy_put_object_defaults(%{"object" => map} = activity, _)
+       when is_map(map) do
+    object =
+      map
+      |> Map.put_new_lazy("id", &generate_object_id/0)
+      |> Map.put_new_lazy("published", &make_date/0)
+      |> Map.put_new("context", activity["context"])
+      |> Map.put_new("context_id", activity["context_id"])
+
+    %{activity | "object" => object}
+  end
+
+  defp lazy_put_object_defaults(activity, _), do: activity
+
   @doc """
   Inserts a full object if it is contained in an activity.
   """
   def insert_full_object(%{"object" => %{"type" => type} = object_data} = map)
       when is_map(object_data) and type in @supported_object_types do
     with {:ok, object} <- Object.create(object_data) do
-      map =
-        map
-        |> Map.put("object", object.data["id"])
+      map = Map.put(map, "object", object.data["id"])
 
       {:ok, map, object}
     end
@@ -263,7 +247,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     |> Activity.Queries.by_actor()
     |> Activity.Queries.by_object_id(id)
     |> Activity.Queries.by_type("Like")
-    |> Activity.Queries.limit(1)
+    |> limit(1)
     |> Repo.one()
   end
 
@@ -356,36 +340,35 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   @doc """
   Updates a follow activity's state (for locked accounts).
   """
+  @spec update_follow_state_for_all(Activity.t(), String.t()) :: {:ok, Activity} | {:error, any()}
   def update_follow_state_for_all(
         %Activity{data: %{"actor" => actor, "object" => object}} = activity,
         state
       ) do
-    try do
-      Ecto.Adapters.SQL.query!(
-        Repo,
-        "UPDATE activities SET data = jsonb_set(data, '{state}', $1) WHERE data->>'type' = 'Follow' AND data->>'actor' = $2 AND data->>'object' = $3 AND data->>'state' = 'pending'",
-        [state, actor, object]
-      )
+    "Follow"
+    |> Activity.Queries.by_type()
+    |> Activity.Queries.by_actor(actor)
+    |> Activity.Queries.by_object_id(object)
+    |> where(fragment("data->>'state' = 'pending'"))
+    |> update(set: [data: fragment("jsonb_set(data, '{state}', ?)", ^state)])
+    |> Repo.update_all([])
 
-      User.set_follow_state_cache(actor, object, state)
-      activity = Activity.get_by_id(activity.id)
-      {:ok, activity}
-    rescue
-      e ->
-        {:error, e}
-    end
+    User.set_follow_state_cache(actor, object, state)
+
+    activity = Activity.get_by_id(activity.id)
+
+    {:ok, activity}
   end
 
   def update_follow_state(
         %Activity{data: %{"actor" => actor, "object" => object}} = activity,
         state
       ) do
-    with new_data <-
-           activity.data
-           |> Map.put("state", state),
-         changeset <- Changeset.change(activity, data: new_data),
-         {:ok, activity} <- Repo.update(changeset),
-         _ <- User.set_follow_state_cache(actor, object, state) do
+    new_data = Map.put(activity.data, "state", state)
+    changeset = Changeset.change(activity, data: new_data)
+
+    with {:ok, activity} <- Repo.update(changeset) do
+      User.set_follow_state_cache(actor, object, state)
       {:ok, activity}
     end
   end
@@ -410,28 +393,14 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   end
 
   def fetch_latest_follow(%User{ap_id: follower_id}, %User{ap_id: followed_id}) do
-    query =
-      from(
-        activity in Activity,
-        where:
-          fragment(
-            "? ->> 'type' = 'Follow'",
-            activity.data
-          ),
-        where: activity.actor == ^follower_id,
-        # this is to use the index
-        where:
-          fragment(
-            "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
-            activity.data,
-            activity.data,
-            ^followed_id
-          ),
-        order_by: [fragment("? desc nulls last", activity.id)],
-        limit: 1
-      )
-
-    Repo.one(query)
+    "Follow"
+    |> Activity.Queries.by_type()
+    |> where(actor: ^follower_id)
+    # this is to use the index
+    |> Activity.Queries.by_object_id(followed_id)
+    |> order_by([activity], fragment("? desc nulls last", activity.id))
+    |> limit(1)
+    |> Repo.one()
   end
 
   #### Announce-related helpers
@@ -439,23 +408,14 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   @doc """
   Retruns an existing announce activity if the notice has already been announced
   """
-  def get_existing_announce(actor, %{data: %{"id" => id}}) do
-    query =
-      from(
-        activity in Activity,
-        where: activity.actor == ^actor,
-        # this is to use the index
-        where:
-          fragment(
-            "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
-            activity.data,
-            activity.data,
-            ^id
-          ),
-        where: fragment("(?)->>'type' = 'Announce'", activity.data)
-      )
-
-    Repo.one(query)
+  @spec get_existing_announce(String.t(), map()) :: Activity.t() | nil
+  def get_existing_announce(actor, %{data: %{"id" => ap_id}}) do
+    "Announce"
+    |> Activity.Queries.by_type()
+    |> where(actor: ^actor)
+    # this is to use the index
+    |> Activity.Queries.by_object_id(ap_id)
+    |> Repo.one()
   end
 
   @doc """
@@ -531,31 +491,35 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     |> maybe_put("id", activity_id)
   end
 
+  @spec add_announce_to_object(Activity.t(), Object.t()) ::
+          {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
   def add_announce_to_object(
-        %Activity{
-          data: %{"actor" => actor, "cc" => [Pleroma.Constants.as_public()]}
-        },
+        %Activity{data: %{"actor" => actor, "cc" => [Pleroma.Constants.as_public()]}},
         object
       ) do
-    announcements =
-      if is_list(object.data["announcements"]), do: object.data["announcements"], else: []
+    announcements = take_announcements(object)
 
-    with announcements <- [actor | announcements] |> Enum.uniq() do
+    with announcements <- Enum.uniq([actor | announcements]) do
       update_element_in_object("announcement", announcements, object)
     end
   end
 
   def add_announce_to_object(_, object), do: {:ok, object}
 
+  @spec remove_announce_from_object(Activity.t(), Object.t()) ::
+          {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
   def remove_announce_from_object(%Activity{data: %{"actor" => actor}}, object) do
-    announcements =
-      if is_list(object.data["announcements"]), do: object.data["announcements"], else: []
-
-    with announcements <- announcements |> List.delete(actor) do
+    with announcements <- List.delete(take_announcements(object), actor) do
       update_element_in_object("announcement", announcements, object)
     end
   end
 
+  defp take_announcements(%{data: %{"announcements" => announcements}} = _)
+       when is_list(announcements),
+       do: announcements
+
+  defp take_announcements(_), do: []
+
   #### Unfollow-related helpers
 
   def make_unfollow_data(follower, followed, follow_activity, activity_id) do
@@ -569,29 +533,16 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   end
 
   #### Block-related helpers
+  @spec fetch_latest_block(User.t(), User.t()) :: Activity.t() | nil
   def fetch_latest_block(%User{ap_id: blocker_id}, %User{ap_id: blocked_id}) do
-    query =
-      from(
-        activity in Activity,
-        where:
-          fragment(
-            "? ->> 'type' = 'Block'",
-            activity.data
-          ),
-        where: activity.actor == ^blocker_id,
-        # this is to use the index
-        where:
-          fragment(
-            "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
-            activity.data,
-            activity.data,
-            ^blocked_id
-          ),
-        order_by: [fragment("? desc nulls last", activity.id)],
-        limit: 1
-      )
-
-    Repo.one(query)
+    "Block"
+    |> Activity.Queries.by_type()
+    |> where(actor: ^blocker_id)
+    # this is to use the index
+    |> Activity.Queries.by_object_id(blocked_id)
+    |> order_by([activity], fragment("? desc nulls last", activity.id))
+    |> limit(1)
+    |> Repo.one()
   end
 
   def make_block_data(blocker, blocked, activity_id) do
@@ -631,28 +582,32 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   end
 
   #### Flag-related helpers
-
-  def make_flag_data(params, additional) do
-    status_ap_ids =
-      Enum.map(params.statuses || [], fn
-        %Activity{} = act -> act.data["id"]
-        act when is_map(act) -> act["id"]
-        act when is_binary(act) -> act
-      end)
-
-    object = [params.account.ap_id] ++ status_ap_ids
-
+  @spec make_flag_data(map(), map()) :: map()
+  def make_flag_data(%{actor: actor, context: context, content: content} = params, additional) do
     %{
       "type" => "Flag",
-      "actor" => params.actor.ap_id,
-      "content" => params.content,
-      "object" => object,
-      "context" => params.context,
+      "actor" => actor.ap_id,
+      "content" => content,
+      "object" => build_flag_object(params),
+      "context" => context,
       "state" => "open"
     }
     |> Map.merge(additional)
   end
 
+  def make_flag_data(_, _), do: %{}
+
+  defp build_flag_object(%{account: account, statuses: statuses} = _) do
+    [account.ap_id] ++
+      Enum.map(statuses || [], fn
+        %Activity{} = act -> act.data["id"]
+        act when is_map(act) -> act["id"]
+        act when is_binary(act) -> act
+      end)
+  end
+
+  defp build_flag_object(_), do: []
+
   @doc """
   Fetches the OrderedCollection/OrderedCollectionPage from `from`, limiting the amount of pages fetched after
   the first one to `pages_left` pages.
@@ -695,11 +650,11 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   #### Report-related helpers
 
   def update_report_state(%Activity{} = activity, state) when state in @supported_report_states do
-    with new_data <- Map.put(activity.data, "state", state),
-         changeset <- Changeset.change(activity, data: new_data),
-         {:ok, activity} <- Repo.update(changeset) do
-      {:ok, activity}
-    end
+    new_data = Map.put(activity.data, "state", state)
+
+    activity
+    |> Changeset.change(data: new_data)
+    |> Repo.update()
   end
 
   def update_report_state(_, _), do: {:error, "Unsupported state"}
@@ -766,21 +721,13 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   end
 
   def get_existing_votes(actor, %{data: %{"id" => id}}) do
-    query =
-      from(
-        [activity, object: object] in Activity.with_preloaded_object(Activity),
-        where: fragment("(?)->>'type' = 'Create'", activity.data),
-        where: fragment("(?)->>'actor' = ?", activity.data, ^actor),
-        where:
-          fragment(
-            "(?)->>'inReplyTo' = ?",
-            object.data,
-            ^to_string(id)
-          ),
-        where: fragment("(?)->>'type' = 'Answer'", object.data)
-      )
-
-    Repo.all(query)
+    actor
+    |> Activity.Queries.by_actor()
+    |> Activity.Queries.by_type("Create")
+    |> Activity.with_preloaded_object()
+    |> where([a, object: o], fragment("(?)->>'inReplyTo' = ?", o.data, ^to_string(id)))
+    |> where([a, object: o], fragment("(?)->>'type' = 'Answer'", o.data))
+    |> Repo.all()
   end
 
   defp maybe_put(map, _key, nil), do: map
diff --git a/lib/pleroma/web/activity_pub/views/user_view.ex b/lib/pleroma/web/activity_pub/views/user_view.ex
index 8abfa1fcd..276306ec0 100644
--- a/lib/pleroma/web/activity_pub/views/user_view.ex
+++ b/lib/pleroma/web/activity_pub/views/user_view.ex
@@ -115,30 +115,34 @@ defmodule Pleroma.Web.ActivityPub.UserView do
   end
 
   def render("following.json", %{user: user, page: page} = opts) do
-    showing = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
+    showing_items = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
+    showing_count = showing_items || !user.info.hide_follows_count
+
     query = User.get_friends_query(user)
     query = from(user in query, select: [:ap_id])
     following = Repo.all(query)
 
     total =
-      if showing do
+      if showing_count do
         length(following)
       else
         0
       end
 
-    collection(following, "#{user.ap_id}/following", page, showing, total)
+    collection(following, "#{user.ap_id}/following", page, showing_items, total)
     |> Map.merge(Utils.make_json_ld_header())
   end
 
   def render("following.json", %{user: user} = opts) do
-    showing = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
+    showing_items = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
+    showing_count = showing_items || !user.info.hide_follows_count
+
     query = User.get_friends_query(user)
     query = from(user in query, select: [:ap_id])
     following = Repo.all(query)
 
     total =
-      if showing do
+      if showing_count do
         length(following)
       else
         0
@@ -149,7 +153,7 @@ defmodule Pleroma.Web.ActivityPub.UserView do
       "type" => "OrderedCollection",
       "totalItems" => total,
       "first" =>
-        if showing do
+        if showing_items do
           collection(following, "#{user.ap_id}/following", 1, !user.info.hide_follows)
         else
           "#{user.ap_id}/following?page=1"
@@ -159,32 +163,34 @@ defmodule Pleroma.Web.ActivityPub.UserView do
   end
 
   def render("followers.json", %{user: user, page: page} = opts) do
-    showing = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
+    showing_items = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
+    showing_count = showing_items || !user.info.hide_followers_count
 
     query = User.get_followers_query(user)
     query = from(user in query, select: [:ap_id])
     followers = Repo.all(query)
 
     total =
-      if showing do
+      if showing_count do
         length(followers)
       else
         0
       end
 
-    collection(followers, "#{user.ap_id}/followers", page, showing, total)
+    collection(followers, "#{user.ap_id}/followers", page, showing_items, total)
     |> Map.merge(Utils.make_json_ld_header())
   end
 
   def render("followers.json", %{user: user} = opts) do
-    showing = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
+    showing_items = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
+    showing_count = showing_items || !user.info.hide_followers_count
 
     query = User.get_followers_query(user)
     query = from(user in query, select: [:ap_id])
     followers = Repo.all(query)
 
     total =
-      if showing do
+      if showing_count do
         length(followers)
       else
         0
@@ -195,8 +201,8 @@ defmodule Pleroma.Web.ActivityPub.UserView do
       "type" => "OrderedCollection",
       "totalItems" => total,
       "first" =>
-        if showing do
-          collection(followers, "#{user.ap_id}/followers", 1, showing, total)
+        if showing_items do
+          collection(followers, "#{user.ap_id}/followers", 1, showing_items, total)
         else
           "#{user.ap_id}/followers?page=1"
         end
diff --git a/lib/pleroma/web/admin_api/admin_api_controller.ex b/lib/pleroma/web/admin_api/admin_api_controller.ex
index 544b9d7d8..8a8091daa 100644
--- a/lib/pleroma/web/admin_api/admin_api_controller.ex
+++ b/lib/pleroma/web/admin_api/admin_api_controller.ex
@@ -400,13 +400,23 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
     end
   end
 
-  @doc "Get a account registeration invite token (base64 string)"
-  def get_invite_token(conn, params) do
-    options = params["invite"] || %{}
-    {:ok, invite} = UserInviteToken.create_invite(options)
+  @doc "Create an account registration invite token"
+  def create_invite_token(conn, params) do
+    opts = %{}
 
-    conn
-    |> json(invite.token)
+    opts =
+      if params["max_use"],
+        do: Map.put(opts, :max_use, params["max_use"]),
+        else: opts
+
+    opts =
+      if params["expires_at"],
+        do: Map.put(opts, :expires_at, params["expires_at"]),
+        else: opts
+
+    {:ok, invite} = UserInviteToken.create_invite(opts)
+
+    json(conn, AccountView.render("invite.json", %{invite: invite}))
   end
 
   @doc "Get list of created invites"
@@ -442,11 +452,9 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
       params
       |> Map.put("type", "Flag")
       |> Map.put("skip_preload", true)
+      |> Map.put("total", true)
 
-    reports =
-      []
-      |> ActivityPub.fetch_activities(params)
-      |> Enum.reverse()
+    reports = ActivityPub.fetch_activities([], params)
 
     conn
     |> put_view(ReportView)
diff --git a/lib/pleroma/web/admin_api/config.ex b/lib/pleroma/web/admin_api/config.ex
index a10cc779b..1917a5580 100644
--- a/lib/pleroma/web/admin_api/config.ex
+++ b/lib/pleroma/web/admin_api/config.ex
@@ -90,6 +90,8 @@ defmodule Pleroma.Web.AdminAPI.Config do
     for v <- entity, into: [], do: do_convert(v)
   end
 
+  defp do_convert(%Regex{} = entity), do: inspect(entity)
+
   defp do_convert(entity) when is_map(entity) do
     for {k, v} <- entity, into: %{}, do: {do_convert(k), do_convert(v)}
   end
@@ -122,7 +124,7 @@ defmodule Pleroma.Web.AdminAPI.Config do
 
   def transform(entity), do: :erlang.term_to_binary(entity)
 
-  defp do_transform(%Regex{} = entity) when is_map(entity), do: entity
+  defp do_transform(%Regex{} = entity), do: entity
 
   defp do_transform(%{"tuple" => [":dispatch", [entity]]}) do
     {dispatch_settings, []} = do_eval(entity)
@@ -154,8 +156,15 @@ defmodule Pleroma.Web.AdminAPI.Config do
   defp do_transform(entity), do: entity
 
   defp do_transform_string("~r/" <> pattern) do
-    pattern = String.trim_trailing(pattern, "/")
-    ~r/#{pattern}/
+    modificator = String.split(pattern, "/") |> List.last()
+    pattern = String.trim_trailing(pattern, "/" <> modificator)
+
+    case modificator do
+      "" -> ~r/#{pattern}/
+      "i" -> ~r/#{pattern}/i
+      "u" -> ~r/#{pattern}/u
+      "s" -> ~r/#{pattern}/s
+    end
   end
 
   defp do_transform_string(":" <> atom), do: String.to_atom(atom)
diff --git a/lib/pleroma/web/admin_api/views/report_view.ex b/lib/pleroma/web/admin_api/views/report_view.ex
index a25f3f1fe..51b95ad5e 100644
--- a/lib/pleroma/web/admin_api/views/report_view.ex
+++ b/lib/pleroma/web/admin_api/views/report_view.ex
@@ -12,7 +12,9 @@ defmodule Pleroma.Web.AdminAPI.ReportView do
 
   def render("index.json", %{reports: reports}) do
     %{
-      reports: render_many(reports, __MODULE__, "show.json", as: :report)
+      reports:
+        render_many(reports[:items], __MODULE__, "show.json", as: :report) |> Enum.reverse(),
+      total: reports[:total]
     }
   end
 
diff --git a/lib/pleroma/web/controller_helper.ex b/lib/pleroma/web/controller_helper.ex
index eeac9f503..b53a01955 100644
--- a/lib/pleroma/web/controller_helper.ex
+++ b/lib/pleroma/web/controller_helper.ex
@@ -34,79 +34,38 @@ defmodule Pleroma.Web.ControllerHelper do
 
   defp param_to_integer(_, default), do: default
 
-  def add_link_headers(
-        conn,
-        method,
-        activities,
-        param \\ nil,
-        params \\ %{},
-        func3 \\ nil,
-        func4 \\ nil
-      ) do
-    params =
-      conn.params
-      |> Map.drop(["since_id", "max_id", "min_id"])
-      |> Map.merge(params)
+  def add_link_headers(conn, activities, extra_params \\ %{}) do
+    case List.last(activities) do
+      %{id: max_id} ->
+        params =
+          conn.params
+          |> Map.drop(Map.keys(conn.path_params))
+          |> Map.drop(["since_id", "max_id", "min_id"])
+          |> Map.merge(extra_params)
 
-    last = List.last(activities)
+        limit =
+          params
+          |> Map.get("limit", "20")
+          |> String.to_integer()
 
-    func3 = func3 || (&mastodon_api_url/3)
-    func4 = func4 || (&mastodon_api_url/4)
+        min_id =
+          if length(activities) <= limit do
+            activities
+            |> List.first()
+            |> Map.get(:id)
+          else
+            activities
+            |> Enum.at(limit * -1)
+            |> Map.get(:id)
+          end
 
-    if last do
-      max_id = last.id
+        next_url = current_url(conn, Map.merge(params, %{max_id: max_id}))
+        prev_url = current_url(conn, Map.merge(params, %{min_id: min_id}))
 
-      limit =
-        params
-        |> Map.get("limit", "20")
-        |> String.to_integer()
+        put_resp_header(conn, "link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
 
-      min_id =
-        if length(activities) <= limit do
-          activities
-          |> List.first()
-          |> Map.get(:id)
-        else
-          activities
-          |> Enum.at(limit * -1)
-          |> Map.get(:id)
-        end
-
-      {next_url, prev_url} =
-        if param do
-          {
-            func4.(
-              Pleroma.Web.Endpoint,
-              method,
-              param,
-              Map.merge(params, %{max_id: max_id})
-            ),
-            func4.(
-              Pleroma.Web.Endpoint,
-              method,
-              param,
-              Map.merge(params, %{min_id: min_id})
-            )
-          }
-        else
-          {
-            func3.(
-              Pleroma.Web.Endpoint,
-              method,
-              Map.merge(params, %{max_id: max_id})
-            ),
-            func3.(
-              Pleroma.Web.Endpoint,
-              method,
-              Map.merge(params, %{min_id: min_id})
-            )
-          }
-        end
-
-      conn
-      |> put_resp_header("link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
-    else
-      conn
+      _ ->
+        conn
     end
   end
 end
diff --git a/lib/pleroma/web/federator/federator.ex b/lib/pleroma/web/federator/federator.ex
index f4f9e83e0..1a2da014a 100644
--- a/lib/pleroma/web/federator/federator.ex
+++ b/lib/pleroma/web/federator/federator.ex
@@ -10,16 +10,17 @@ defmodule Pleroma.Web.Federator do
   alias Pleroma.Web.ActivityPub.Transmogrifier
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.Federator.Publisher
-  alias Pleroma.Web.Federator.RetryQueue
   alias Pleroma.Web.OStatus
   alias Pleroma.Web.Websub
+  alias Pleroma.Workers.PublisherWorker
+  alias Pleroma.Workers.ReceiverWorker
+  alias Pleroma.Workers.SubscriberWorker
 
   require Logger
 
   def init do
-    # 1 minute
-    Process.sleep(1000 * 60)
-    refresh_subscriptions()
+    # To do: consider removing this call in favor of scheduled execution (`quantum`-based)
+    refresh_subscriptions(schedule_in: 60)
   end
 
   @doc "Addresses [memory leaks on recursive replies fetching](https://git.pleroma.social/pleroma/pleroma/issues/161)"
@@ -37,50 +38,38 @@ defmodule Pleroma.Web.Federator do
   # Client API
 
   def incoming_doc(doc) do
-    PleromaJobQueue.enqueue(:federator_incoming, __MODULE__, [:incoming_doc, doc])
+    ReceiverWorker.enqueue("incoming_doc", %{"body" => doc})
   end
 
   def incoming_ap_doc(params) do
-    PleromaJobQueue.enqueue(:federator_incoming, __MODULE__, [:incoming_ap_doc, params])
+    ReceiverWorker.enqueue("incoming_ap_doc", %{"params" => params})
   end
 
-  def publish(activity, priority \\ 1) do
-    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:publish, activity], priority)
+  def publish(%{id: "pleroma:fakeid"} = activity) do
+    perform(:publish, activity)
   end
 
-  def verify_websub(websub) do
-    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:verify_websub, websub])
+  def publish(activity) do
+    PublisherWorker.enqueue("publish", %{"activity_id" => activity.id})
   end
 
-  def request_subscription(sub) do
-    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:request_subscription, sub])
+  def verify_websub(websub) do
+    SubscriberWorker.enqueue("verify_websub", %{"websub_id" => websub.id})
   end
 
-  def refresh_subscriptions do
-    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:refresh_subscriptions])
+  def request_subscription(websub) do
+    SubscriberWorker.enqueue("request_subscription", %{"websub_id" => websub.id})
   end
 
-  # Job Worker Callbacks
-
-  def perform(:refresh_subscriptions) do
-    Logger.debug("Federator running refresh subscriptions")
-    Websub.refresh_subscriptions()
-
-    spawn(fn ->
-      # 6 hours
-      Process.sleep(1000 * 60 * 60 * 6)
-      refresh_subscriptions()
-    end)
+  def refresh_subscriptions(worker_args \\ []) do
+    SubscriberWorker.enqueue("refresh_subscriptions", %{}, worker_args ++ [max_attempts: 1])
   end
 
-  def perform(:request_subscription, websub) do
-    Logger.debug("Refreshing #{websub.topic}")
+  # Job Worker Callbacks
 
-    with {:ok, websub} <- Websub.request_subscription(websub) do
-      Logger.debug("Successfully refreshed #{websub.topic}")
-    else
-      _e -> Logger.debug("Couldn't refresh #{websub.topic}")
-    end
+  @spec perform(atom(), module(), any()) :: {:ok, any()} | {:error, any()}
+  def perform(:publish_one, module, params) do
+    apply(module, :publish_one, [params])
   end
 
   def perform(:publish, activity) do
@@ -92,14 +81,6 @@ defmodule Pleroma.Web.Federator do
     end
   end
 
-  def perform(:verify_websub, websub) do
-    Logger.debug(fn ->
-      "Running WebSub verification for #{websub.id} (#{websub.topic}, #{websub.callback})"
-    end)
-
-    Websub.verify(websub)
-  end
-
   def perform(:incoming_doc, doc) do
     Logger.info("Got document, trying to parse")
     OStatus.handle_incoming(doc)
@@ -130,22 +111,27 @@ defmodule Pleroma.Web.Federator do
     end
   end
 
-  def perform(
-        :publish_single_websub,
-        %{xml: _xml, topic: _topic, callback: _callback, secret: _secret} = params
-      ) do
-    case Websub.publish_one(params) do
-      {:ok, _} ->
-        :ok
+  def perform(:request_subscription, websub) do
+    Logger.debug("Refreshing #{websub.topic}")
 
-      {:error, _} ->
-        RetryQueue.enqueue(params, Websub)
+    with {:ok, websub} <- Websub.request_subscription(websub) do
+      Logger.debug("Successfully refreshed #{websub.topic}")
+    else
+      _e -> Logger.debug("Couldn't refresh #{websub.topic}")
     end
   end
 
-  def perform(type, _) do
-    Logger.debug(fn -> "Unknown task: #{type}" end)
-    {:error, "Don't know what to do with this"}
+  def perform(:verify_websub, websub) do
+    Logger.debug(fn ->
+      "Running WebSub verification for #{websub.id} (#{websub.topic}, #{websub.callback})"
+    end)
+
+    Websub.verify(websub)
+  end
+
+  def perform(:refresh_subscriptions) do
+    Logger.debug("Federator running refresh subscriptions")
+    Websub.refresh_subscriptions()
   end
 
   def ap_enabled_actor(id) do
diff --git a/lib/pleroma/web/federator/publisher.ex b/lib/pleroma/web/federator/publisher.ex
index 70f870244..937064638 100644
--- a/lib/pleroma/web/federator/publisher.ex
+++ b/lib/pleroma/web/federator/publisher.ex
@@ -6,7 +6,7 @@ defmodule Pleroma.Web.Federator.Publisher do
   alias Pleroma.Activity
   alias Pleroma.Config
   alias Pleroma.User
-  alias Pleroma.Web.Federator.RetryQueue
+  alias Pleroma.Workers.PublisherWorker
 
   require Logger
 
@@ -30,23 +30,11 @@ defmodule Pleroma.Web.Federator.Publisher do
   Enqueue publishing a single activity.
   """
   @spec enqueue_one(module(), Map.t()) :: :ok
-  def enqueue_one(module, %{} = params),
-    do: PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:publish_one, module, params])
-
-  @spec perform(atom(), module(), any()) :: {:ok, any()} | {:error, any()}
-  def perform(:publish_one, module, params) do
-    case apply(module, :publish_one, [params]) do
-      {:ok, _} ->
-        :ok
-
-      {:error, _e} ->
-        RetryQueue.enqueue(params, module)
-    end
-  end
-
-  def perform(type, _, _) do
-    Logger.debug("Unknown task: #{type}")
-    {:error, "Don't know what to do with this"}
+  def enqueue_one(module, %{} = params) do
+    PublisherWorker.enqueue(
+      "publish_one",
+      %{"module" => to_string(module), "params" => params}
+    )
   end
 
   @doc """
diff --git a/lib/pleroma/web/federator/retry_queue.ex b/lib/pleroma/web/federator/retry_queue.ex
deleted file mode 100644
index 9eab8c218..000000000
--- a/lib/pleroma/web/federator/retry_queue.ex
+++ /dev/null
@@ -1,239 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Web.Federator.RetryQueue do
-  use GenServer
-
-  require Logger
-
-  def init(args) do
-    queue_table = :ets.new(:pleroma_retry_queue, [:bag, :protected])
-
-    {:ok, %{args | queue_table: queue_table, running_jobs: :sets.new()}}
-  end
-
-  def start_link(_) do
-    enabled =
-      if Pleroma.Config.get(:env) == :test,
-        do: true,
-        else: Pleroma.Config.get([__MODULE__, :enabled], false)
-
-    if enabled do
-      Logger.info("Starting retry queue")
-
-      linkres =
-        GenServer.start_link(
-          __MODULE__,
-          %{delivered: 0, dropped: 0, queue_table: nil, running_jobs: nil},
-          name: __MODULE__
-        )
-
-      maybe_kickoff_timer()
-      linkres
-    else
-      Logger.info("Retry queue disabled")
-      :ignore
-    end
-  end
-
-  def enqueue(data, transport, retries \\ 0) do
-    GenServer.cast(__MODULE__, {:maybe_enqueue, data, transport, retries + 1})
-  end
-
-  def get_stats do
-    GenServer.call(__MODULE__, :get_stats)
-  end
-
-  def reset_stats do
-    GenServer.call(__MODULE__, :reset_stats)
-  end
-
-  def get_retry_params(retries) do
-    if retries > Pleroma.Config.get([__MODULE__, :max_retries]) do
-      {:drop, "Max retries reached"}
-    else
-      {:retry, growth_function(retries)}
-    end
-  end
-
-  def get_retry_timer_interval do
-    Pleroma.Config.get([:retry_queue, :interval], 1000)
-  end
-
-  defp ets_count_expires(table, current_time) do
-    :ets.select_count(
-      table,
-      [
-        {
-          {:"$1", :"$2"},
-          [{:"=<", :"$1", {:const, current_time}}],
-          [true]
-        }
-      ]
-    )
-  end
-
-  defp ets_pop_n_expired(table, current_time, desired) do
-    {popped, _continuation} =
-      :ets.select(
-        table,
-        [
-          {
-            {:"$1", :"$2"},
-            [{:"=<", :"$1", {:const, current_time}}],
-            [:"$_"]
-          }
-        ],
-        desired
-      )
-
-    popped
-    |> Enum.each(fn e ->
-      :ets.delete_object(table, e)
-    end)
-
-    popped
-  end
-
-  def maybe_start_job(running_jobs, queue_table) do
-    # we don't want to hit the ets or the DateTime more times than we have to
-    # could optimize slightly further by not using the count, and instead grabbing
-    # up to N objects early...
-    current_time = DateTime.to_unix(DateTime.utc_now())
-    n_running_jobs = :sets.size(running_jobs)
-
-    if n_running_jobs < Pleroma.Config.get([__MODULE__, :max_jobs]) do
-      n_ready_jobs = ets_count_expires(queue_table, current_time)
-
-      if n_ready_jobs > 0 do
-        # figure out how many we could start
-        available_job_slots = Pleroma.Config.get([__MODULE__, :max_jobs]) - n_running_jobs
-        start_n_jobs(running_jobs, queue_table, current_time, available_job_slots)
-      else
-        running_jobs
-      end
-    else
-      running_jobs
-    end
-  end
-
-  defp start_n_jobs(running_jobs, _queue_table, _current_time, 0) do
-    running_jobs
-  end
-
-  defp start_n_jobs(running_jobs, queue_table, current_time, available_job_slots)
-       when available_job_slots > 0 do
-    candidates = ets_pop_n_expired(queue_table, current_time, available_job_slots)
-
-    candidates
-    |> List.foldl(running_jobs, fn {_, e}, rj ->
-      {:ok, pid} = Task.start(fn -> worker(e) end)
-      mref = Process.monitor(pid)
-      :sets.add_element(mref, rj)
-    end)
-  end
-
-  def worker({:send, data, transport, retries}) do
-    case transport.publish_one(data) do
-      {:ok, _} ->
-        GenServer.cast(__MODULE__, :inc_delivered)
-        :delivered
-
-      {:error, _reason} ->
-        enqueue(data, transport, retries)
-        :retry
-    end
-  end
-
-  def handle_call(:get_stats, _from, %{delivered: delivery_count, dropped: drop_count} = state) do
-    {:reply, %{delivered: delivery_count, dropped: drop_count}, state}
-  end
-
-  def handle_call(:reset_stats, _from, %{delivered: delivery_count, dropped: drop_count} = state) do
-    {:reply, %{delivered: delivery_count, dropped: drop_count},
-     %{state | delivered: 0, dropped: 0}}
-  end
-
-  def handle_cast(:reset_stats, state) do
-    {:noreply, %{state | delivered: 0, dropped: 0}}
-  end
-
-  def handle_cast(
-        {:maybe_enqueue, data, transport, retries},
-        %{dropped: drop_count, queue_table: queue_table, running_jobs: running_jobs} = state
-      ) do
-    case get_retry_params(retries) do
-      {:retry, timeout} ->
-        :ets.insert(queue_table, {timeout, {:send, data, transport, retries}})
-        running_jobs = maybe_start_job(running_jobs, queue_table)
-        {:noreply, %{state | running_jobs: running_jobs}}
-
-      {:drop, message} ->
-        Logger.debug(message)
-        {:noreply, %{state | dropped: drop_count + 1}}
-    end
-  end
-
-  def handle_cast(:kickoff_timer, state) do
-    retry_interval = get_retry_timer_interval()
-    Process.send_after(__MODULE__, :retry_timer_run, retry_interval)
-    {:noreply, state}
-  end
-
-  def handle_cast(:inc_delivered, %{delivered: delivery_count} = state) do
-    {:noreply, %{state | delivered: delivery_count + 1}}
-  end
-
-  def handle_cast(:inc_dropped, %{dropped: drop_count} = state) do
-    {:noreply, %{state | dropped: drop_count + 1}}
-  end
-
-  def handle_info({:send, data, transport, retries}, %{delivered: delivery_count} = state) do
-    case transport.publish_one(data) do
-      {:ok, _} ->
-        {:noreply, %{state | delivered: delivery_count + 1}}
-
-      {:error, _reason} ->
-        enqueue(data, transport, retries)
-        {:noreply, state}
-    end
-  end
-
-  def handle_info(
-        :retry_timer_run,
-        %{queue_table: queue_table, running_jobs: running_jobs} = state
-      ) do
-    maybe_kickoff_timer()
-    running_jobs = maybe_start_job(running_jobs, queue_table)
-    {:noreply, %{state | running_jobs: running_jobs}}
-  end
-
-  def handle_info({:DOWN, ref, :process, _pid, _reason}, state) do
-    %{running_jobs: running_jobs, queue_table: queue_table} = state
-    running_jobs = :sets.del_element(ref, running_jobs)
-    running_jobs = maybe_start_job(running_jobs, queue_table)
-    {:noreply, %{state | running_jobs: running_jobs}}
-  end
-
-  def handle_info(unknown, state) do
-    Logger.debug("RetryQueue: don't know what to do with #{inspect(unknown)}, ignoring")
-    {:noreply, state}
-  end
-
-  if Pleroma.Config.get(:env) == :test do
-    defp growth_function(_retries) do
-      _shutit = Pleroma.Config.get([__MODULE__, :initial_timeout])
-      DateTime.to_unix(DateTime.utc_now()) - 1
-    end
-  else
-    defp growth_function(retries) do
-      round(Pleroma.Config.get([__MODULE__, :initial_timeout]) * :math.pow(retries, 3)) +
-        DateTime.to_unix(DateTime.utc_now())
-    end
-  end
-
-  defp maybe_kickoff_timer do
-    GenServer.cast(__MODULE__, :kickoff_timer)
-  end
-end
diff --git a/lib/pleroma/web/mastodon_api/controllers/mastodon_api_controller.ex b/lib/pleroma/web/mastodon_api/controllers/mastodon_api_controller.ex
index c54462bb3..37eeb2ac3 100644
--- a/lib/pleroma/web/mastodon_api/controllers/mastodon_api_controller.ex
+++ b/lib/pleroma/web/mastodon_api/controllers/mastodon_api_controller.ex
@@ -6,7 +6,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   use Pleroma.Web, :controller
 
   import Pleroma.Web.ControllerHelper,
-    only: [json_response: 3, add_link_headers: 5, add_link_headers: 4, add_link_headers: 3]
+    only: [json_response: 3, add_link_headers: 2, add_link_headers: 3]
 
   alias Ecto.Changeset
   alias Pleroma.Activity
@@ -147,6 +147,8 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       [
         :no_rich_text,
         :locked,
+        :hide_followers_count,
+        :hide_follows_count,
         :hide_followers,
         :hide_follows,
         :hide_favorites,
@@ -365,7 +367,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> Enum.reverse()
 
     conn
-    |> add_link_headers(:home_timeline, activities)
+    |> add_link_headers(activities)
     |> put_view(StatusView)
     |> render("index.json", %{activities: activities, for: user, as: :activity})
   end
@@ -384,7 +386,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> Enum.reverse()
 
     conn
-    |> add_link_headers(:public_timeline, activities, false, %{"local" => local_only})
+    |> add_link_headers(activities, %{"local" => local_only})
     |> put_view(StatusView)
     |> render("index.json", %{activities: activities, for: user, as: :activity})
   end
@@ -398,7 +400,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       activities = ActivityPub.fetch_user_activities(user, reading_user, params)
 
       conn
-      |> add_link_headers(:user_statuses, activities, params["id"])
+      |> add_link_headers(activities)
       |> put_view(StatusView)
       |> render("index.json", %{
         activities: activities,
@@ -422,7 +424,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> Pagination.fetch_paginated(params)
 
     conn
-    |> add_link_headers(:dm_timeline, activities)
+    |> add_link_headers(activities)
     |> put_view(StatusView)
     |> render("index.json", %{activities: activities, for: user, as: :activity})
   end
@@ -485,7 +487,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   end
 
   def get_poll(%{assigns: %{user: user}} = conn, %{"id" => id}) do
-    with %Object{} = object <- Object.get_by_id(id),
+    with %Object{} = object <- Object.get_by_id_and_maybe_refetch(id, interval: 60),
          %Activity{} = activity <- Activity.get_create_by_object_ap_id(object.data["id"]),
          true <- Visibility.visible_for_user?(activity, user) do
       conn
@@ -537,7 +539,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   def scheduled_statuses(%{assigns: %{user: user}} = conn, params) do
     with scheduled_activities <- MastodonAPI.get_scheduled_activities(user, params) do
       conn
-      |> add_link_headers(:scheduled_statuses, scheduled_activities)
+      |> add_link_headers(scheduled_activities)
       |> put_view(ScheduledActivityView)
       |> render("index.json", %{scheduled_activities: scheduled_activities})
     end
@@ -720,7 +722,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
     notifications = MastodonAPI.get_notifications(user, params)
 
     conn
-    |> add_link_headers(:notifications, notifications)
+    |> add_link_headers(notifications)
     |> put_view(NotificationView)
     |> render("index.json", %{notifications: notifications, for: user})
   end
@@ -842,6 +844,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
 
   def favourited_by(%{assigns: %{user: user}} = conn, %{"id" => id}) do
     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
+         {:visible, true} <- {:visible, Visibility.visible_for_user?(activity, user)},
          %Object{data: %{"likes" => likes}} <- Object.normalize(activity) do
       q = from(u in User, where: u.ap_id in ^likes)
 
@@ -853,12 +856,14 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> put_view(AccountView)
       |> render("accounts.json", %{for: user, users: users, as: :user})
     else
+      {:visible, false} -> {:error, :not_found}
       _ -> json(conn, [])
     end
   end
 
   def reblogged_by(%{assigns: %{user: user}} = conn, %{"id" => id}) do
     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
+         {:visible, true} <- {:visible, Visibility.visible_for_user?(activity, user)},
          %Object{data: %{"announcements" => announces}} <- Object.normalize(activity) do
       q = from(u in User, where: u.ap_id in ^announces)
 
@@ -870,6 +875,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> put_view(AccountView)
       |> render("accounts.json", %{for: user, users: users, as: :user})
     else
+      {:visible, false} -> {:error, :not_found}
       _ -> json(conn, [])
     end
   end
@@ -908,7 +914,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> Enum.reverse()
 
     conn
-    |> add_link_headers(:hashtag_timeline, activities, params["tag"], %{"local" => local_only})
+    |> add_link_headers(activities, %{"local" => local_only})
     |> put_view(StatusView)
     |> render("index.json", %{activities: activities, for: user, as: :activity})
   end
@@ -924,7 +930,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
         end
 
       conn
-      |> add_link_headers(:followers, followers, user)
+      |> add_link_headers(followers)
       |> put_view(AccountView)
       |> render("accounts.json", %{for: for_user, users: followers, as: :user})
     end
@@ -941,7 +947,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
         end
 
       conn
-      |> add_link_headers(:following, followers, user)
+      |> add_link_headers(followers)
       |> put_view(AccountView)
       |> render("accounts.json", %{for: for_user, users: followers, as: :user})
     end
@@ -1166,7 +1172,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> Enum.reverse()
 
     conn
-    |> add_link_headers(:favourites, activities)
+    |> add_link_headers(activities)
     |> put_view(StatusView)
     |> render("index.json", %{activities: activities, for: user, as: :activity})
   end
@@ -1193,7 +1199,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
         |> Enum.reverse()
 
       conn
-      |> add_link_headers(:favourites, activities)
+      |> add_link_headers(activities)
       |> put_view(StatusView)
       |> render("index.json", %{activities: activities, for: for_user, as: :activity})
     else
@@ -1214,7 +1220,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> Enum.map(fn b -> Map.put(b.activity, :bookmark, Map.delete(b, :activity)) end)
 
     conn
-    |> add_link_headers(:bookmarks, bookmarks)
+    |> add_link_headers(bookmarks)
     |> put_view(StatusView)
     |> render("index.json", %{activities: activities, for: user, as: :activity})
   end
@@ -1654,7 +1660,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       end)
 
     conn
-    |> add_link_headers(:conversations, participations)
+    |> add_link_headers(participations)
     |> json(conversations)
   end
 
diff --git a/lib/pleroma/web/mastodon_api/views/account_view.ex b/lib/pleroma/web/mastodon_api/views/account_view.ex
index 169116d0d..195dd124b 100644
--- a/lib/pleroma/web/mastodon_api/views/account_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/account_view.ex
@@ -74,10 +74,18 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
     user_info = User.get_cached_user_info(user)
 
     following_count =
-      ((!user.info.hide_follows or opts[:for] == user) && user_info.following_count) || 0
+      if !user.info.hide_follows_count or !user.info.hide_follows or opts[:for] == user do
+        user_info.following_count
+      else
+        0
+      end
 
     followers_count =
-      ((!user.info.hide_followers or opts[:for] == user) && user_info.follower_count) || 0
+      if !user.info.hide_followers_count or !user.info.hide_followers or opts[:for] == user do
+        user_info.follower_count
+      else
+        0
+      end
 
     bot = (user.info.source_data["type"] || "Person") in ["Application", "Service"]
 
@@ -138,6 +146,8 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
       pleroma: %{
         confirmation_pending: user_info.confirmation_pending,
         tags: user.tags,
+        hide_followers_count: user.info.hide_followers_count,
+        hide_follows_count: user.info.hide_follows_count,
         hide_followers: user.info.hide_followers,
         hide_follows: user.info.hide_follows,
         hide_favorites: user.info.hide_favorites,
diff --git a/lib/pleroma/web/mastodon_api/websocket_handler.ex b/lib/pleroma/web/mastodon_api/websocket_handler.ex
index dbd3542ea..3c26eb406 100644
--- a/lib/pleroma/web/mastodon_api/websocket_handler.ex
+++ b/lib/pleroma/web/mastodon_api/websocket_handler.ex
@@ -8,6 +8,7 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
   alias Pleroma.Repo
   alias Pleroma.User
   alias Pleroma.Web.OAuth.Token
+  alias Pleroma.Web.Streamer
 
   @behaviour :cowboy_websocket
 
@@ -24,7 +25,7 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
   ]
   @anonymous_streams ["public", "public:local", "hashtag"]
 
-  # Handled by periodic keepalive in Pleroma.Web.Streamer.
+  # Handled by periodic keepalive in Pleroma.Web.Streamer.Ping.
   @timeout :infinity
 
   def init(%{qs: qs} = req, state) do
@@ -65,7 +66,7 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
       }, topic #{state.topic}"
     )
 
-    Pleroma.Web.Streamer.add_socket(state.topic, streamer_socket(state))
+    Streamer.add_socket(state.topic, streamer_socket(state))
     {:ok, state}
   end
 
@@ -80,7 +81,7 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
       }, topic #{state.topic || "?"}: #{inspect(reason)}"
     )
 
-    Pleroma.Web.Streamer.remove_socket(state.topic, streamer_socket(state))
+    Streamer.remove_socket(state.topic, streamer_socket(state))
     :ok
   end
 
diff --git a/lib/pleroma/web/oauth/token/clean_worker.ex b/lib/pleroma/web/oauth/token/clean_worker.ex
index f50098302..f639f9c6f 100644
--- a/lib/pleroma/web/oauth/token/clean_worker.ex
+++ b/lib/pleroma/web/oauth/token/clean_worker.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.OAuth.Token.CleanWorker do
@@ -17,6 +17,7 @@ defmodule Pleroma.Web.OAuth.Token.CleanWorker do
             )
 
   alias Pleroma.Web.OAuth.Token
+  alias Pleroma.Workers.BackgroundWorker
 
   def start_link(_), do: GenServer.start_link(__MODULE__, %{})
 
@@ -27,9 +28,11 @@ defmodule Pleroma.Web.OAuth.Token.CleanWorker do
 
   @doc false
   def handle_info(:perform, state) do
-    Token.delete_expired_tokens()
+    BackgroundWorker.enqueue("clean_expired_tokens", %{})
 
     Process.send_after(self(), :perform, @interval)
     {:noreply, state}
   end
+
+  def perform(:clean), do: Token.delete_expired_tokens()
 end
diff --git a/lib/pleroma/web/oauth/token/query.ex b/lib/pleroma/web/oauth/token/query.ex
index d92e1f071..9642103e6 100644
--- a/lib/pleroma/web/oauth/token/query.ex
+++ b/lib/pleroma/web/oauth/token/query.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.OAuth.Token.Query do
diff --git a/lib/pleroma/web/ostatus/ostatus.ex b/lib/pleroma/web/ostatus/ostatus.ex
index 331cbc0b7..5de1ceef3 100644
--- a/lib/pleroma/web/ostatus/ostatus.ex
+++ b/lib/pleroma/web/ostatus/ostatus.ex
@@ -3,14 +3,12 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.OStatus do
-  import Ecto.Query
   import Pleroma.Web.XML
   require Logger
 
   alias Pleroma.Activity
   alias Pleroma.HTTP
   alias Pleroma.Object
-  alias Pleroma.Repo
   alias Pleroma.User
   alias Pleroma.Web
   alias Pleroma.Web.ActivityPub.ActivityPub
@@ -38,21 +36,13 @@ defmodule Pleroma.Web.OStatus do
     end
   end
 
-  def feed_path(user) do
-    "#{user.ap_id}/feed.atom"
-  end
+  def feed_path(user), do: "#{user.ap_id}/feed.atom"
 
-  def pubsub_path(user) do
-    "#{Web.base_url()}/push/hub/#{user.nickname}"
-  end
+  def pubsub_path(user), do: "#{Web.base_url()}/push/hub/#{user.nickname}"
 
-  def salmon_path(user) do
-    "#{user.ap_id}/salmon"
-  end
+  def salmon_path(user), do: "#{user.ap_id}/salmon"
 
-  def remote_follow_path do
-    "#{Web.base_url()}/ostatus_subscribe?acct={uri}"
-  end
+  def remote_follow_path, do: "#{Web.base_url()}/ostatus_subscribe?acct={uri}"
 
   def handle_incoming(xml_string, options \\ []) do
     with doc when doc != :error <- parse_document(xml_string) do
@@ -217,10 +207,9 @@ defmodule Pleroma.Web.OStatus do
     Get the cw that mastodon uses.
   """
   def get_cw(entry) do
-    with cw when not is_nil(cw) <- string_from_xpath("/*/summary", entry) do
-      cw
-    else
-      _e -> nil
+    case string_from_xpath("/*/summary", entry) do
+      cw when not is_nil(cw) -> cw
+      _ -> nil
     end
   end
 
@@ -232,19 +221,17 @@ defmodule Pleroma.Web.OStatus do
   end
 
   def maybe_update(doc, user) do
-    if "true" == string_from_xpath("//author[1]/ap_enabled", doc) do
-      Transmogrifier.upgrade_user_from_ap_id(user.ap_id)
-    else
-      maybe_update_ostatus(doc, user)
+    case string_from_xpath("//author[1]/ap_enabled", doc) do
+      "true" ->
+        Transmogrifier.upgrade_user_from_ap_id(user.ap_id)
+
+      _ ->
+        maybe_update_ostatus(doc, user)
     end
   end
 
   def maybe_update_ostatus(doc, user) do
-    old_data = %{
-      avatar: user.avatar,
-      bio: user.bio,
-      name: user.name
-    }
+    old_data = Map.take(user, [:bio, :avatar, :name])
 
     with false <- user.local,
          avatar <- make_avatar_object(doc),
@@ -279,38 +266,37 @@ defmodule Pleroma.Web.OStatus do
     end
   end
 
+  @spec find_or_make_user(String.t()) :: {:ok, User.t()}
   def find_or_make_user(uri) do
-    query = from(user in User, where: user.ap_id == ^uri)
-
-    user = Repo.one(query)
-
-    if is_nil(user) do
-      make_user(uri)
-    else
-      {:ok, user}
+    case User.get_by_ap_id(uri) do
+      %User{} = user -> {:ok, user}
+      _ -> make_user(uri)
     end
   end
 
+  @spec make_user(String.t(), boolean()) :: {:ok, User.t()} | {:error, any()}
   def make_user(uri, update \\ false) do
     with {:ok, info} <- gather_user_info(uri) do
-      data = %{
-        name: info["name"],
-        nickname: info["nickname"] <> "@" <> info["host"],
-        ap_id: info["uri"],
-        info: info,
-        avatar: info["avatar"],
-        bio: info["bio"]
-      }
-
       with false <- update,
-           %User{} = user <- User.get_cached_by_ap_id(data.ap_id) do
+           %User{} = user <- User.get_cached_by_ap_id(info["uri"]) do
         {:ok, user}
       else
-        _e -> User.insert_or_update_user(data)
+        _e -> User.insert_or_update_user(build_user_data(info))
       end
     end
   end
 
+  defp build_user_data(info) do
+    %{
+      name: info["name"],
+      nickname: info["nickname"] <> "@" <> info["host"],
+      ap_id: info["uri"],
+      info: info,
+      avatar: info["avatar"],
+      bio: info["bio"]
+    }
+  end
+
   # TODO: Just takes the first one for now.
   def make_avatar_object(author_doc, rel \\ "avatar") do
     href = string_from_xpath("//author[1]/link[@rel=\"#{rel}\"]/@href", author_doc)
@@ -319,23 +305,23 @@ defmodule Pleroma.Web.OStatus do
     if href do
       %{
         "type" => "Image",
-        "url" => [
-          %{
-            "type" => "Link",
-            "mediaType" => type,
-            "href" => href
-          }
-        ]
+        "url" => [%{"type" => "Link", "mediaType" => type, "href" => href}]
       }
     else
       nil
     end
   end
 
+  @spec gather_user_info(String.t()) :: {:ok, map()} | {:error, any()}
   def gather_user_info(username) do
     with {:ok, webfinger_data} <- WebFinger.finger(username),
          {:ok, feed_data} <- Websub.gather_feed_data(webfinger_data["topic"]) do
-      {:ok, Map.merge(webfinger_data, feed_data) |> Map.put("fqn", username)}
+      data =
+        webfinger_data
+        |> Map.merge(feed_data)
+        |> Map.put("fqn", username)
+
+      {:ok, data}
     else
       e ->
         Logger.debug(fn -> "Couldn't gather info for #{username}" end)
@@ -371,10 +357,7 @@ defmodule Pleroma.Web.OStatus do
   def fetch_activity_from_atom_url(url, options \\ []) do
     with true <- String.starts_with?(url, "http"),
          {:ok, %{body: body, status: code}} when code in 200..299 <-
-           HTTP.get(
-             url,
-             [{:Accept, "application/atom+xml"}]
-           ) do
+           HTTP.get(url, [{:Accept, "application/atom+xml"}]) do
       Logger.debug("Got document from #{url}, handling...")
       handle_incoming(body, options)
     else
diff --git a/lib/pleroma/web/ostatus/ostatus_controller.ex b/lib/pleroma/web/ostatus/ostatus_controller.ex
index 07e2a4c2d..64b2c64b3 100644
--- a/lib/pleroma/web/ostatus/ostatus_controller.ex
+++ b/lib/pleroma/web/ostatus/ostatus_controller.ex
@@ -55,12 +55,11 @@ defmodule Pleroma.Web.OStatus.OStatusController do
 
   def feed(conn, %{"nickname" => nickname} = params) do
     with {_, %User{} = user} <- {:fetch_user, User.get_cached_by_nickname(nickname)} do
-      query_params =
-        Map.take(params, ["max_id"])
-        |> Map.merge(%{"whole_db" => true, "actor_id" => user.ap_id})
-
       activities =
-        ActivityPub.fetch_public_activities(query_params)
+        params
+        |> Map.take(["max_id"])
+        |> Map.merge(%{"whole_db" => true, "actor_id" => user.ap_id})
+        |> ActivityPub.fetch_public_activities()
         |> Enum.reverse()
 
       response =
@@ -98,8 +97,7 @@ defmodule Pleroma.Web.OStatus.OStatusController do
 
     Federator.incoming_doc(doc)
 
-    conn
-    |> send_resp(200, "")
+    send_resp(conn, 200, "")
   end
 
   def object(%{assigns: %{format: format}} = conn, %{"uuid" => _uuid})
diff --git a/lib/pleroma/web/pleroma_api/pleroma_api_controller.ex b/lib/pleroma/web/pleroma_api/pleroma_api_controller.ex
index f4df3b024..d17ccf84d 100644
--- a/lib/pleroma/web/pleroma_api/pleroma_api_controller.ex
+++ b/lib/pleroma/web/pleroma_api/pleroma_api_controller.ex
@@ -5,7 +5,7 @@
 defmodule Pleroma.Web.PleromaAPI.PleromaAPIController do
   use Pleroma.Web, :controller
 
-  import Pleroma.Web.ControllerHelper, only: [add_link_headers: 7]
+  import Pleroma.Web.ControllerHelper, only: [add_link_headers: 2]
 
   alias Pleroma.Conversation.Participation
   alias Pleroma.Notification
@@ -27,31 +27,22 @@ defmodule Pleroma.Web.PleromaAPI.PleromaAPIController do
         %{assigns: %{user: user}} = conn,
         %{"id" => participation_id} = params
       ) do
-    params =
-      params
-      |> Map.put("blocking_user", user)
-      |> Map.put("muting_user", user)
-      |> Map.put("user", user)
-
-    participation =
-      participation_id
-      |> Participation.get(preload: [:conversation])
+    participation = Participation.get(participation_id, preload: [:conversation])
 
     if user.id == participation.user_id do
+      params =
+        params
+        |> Map.put("blocking_user", user)
+        |> Map.put("muting_user", user)
+        |> Map.put("user", user)
+
       activities =
         participation.conversation.ap_id
         |> ActivityPub.fetch_activities_for_context(params)
         |> Enum.reverse()
 
       conn
-      |> add_link_headers(
-        :conversation_statuses,
-        activities,
-        participation_id,
-        params,
-        nil,
-        &pleroma_api_url/4
-      )
+      |> add_link_headers(activities)
       |> put_view(StatusView)
       |> render("index.json", %{activities: activities, for: user, as: :activity})
     end
diff --git a/lib/pleroma/web/push/push.ex b/lib/pleroma/web/push/push.ex
index 729dad02a..7ef1532ac 100644
--- a/lib/pleroma/web/push/push.ex
+++ b/lib/pleroma/web/push/push.ex
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Push do
-  alias Pleroma.Web.Push.Impl
+  alias Pleroma.Workers.WebPusherWorker
 
   require Logger
 
@@ -31,6 +31,7 @@ defmodule Pleroma.Web.Push do
     end
   end
 
-  def send(notification),
-    do: PleromaJobQueue.enqueue(:web_push, Impl, [notification])
+  def send(notification) do
+    WebPusherWorker.enqueue("web_push", %{"notification_id" => notification.id})
+  end
 end
diff --git a/lib/pleroma/web/rich_media/parser.ex b/lib/pleroma/web/rich_media/parser.ex
index f5f9e358c..c06b0a0f2 100644
--- a/lib/pleroma/web/rich_media/parser.ex
+++ b/lib/pleroma/web/rich_media/parser.ex
@@ -81,6 +81,7 @@ defmodule Pleroma.Web.RichMedia.Parser do
       {:ok, %Tesla.Env{body: html}} = Pleroma.HTTP.get(url, [], adapter: @hackney_options)
 
       html
+      |> parse_html
       |> maybe_parse()
       |> Map.put(:url, url)
       |> clean_parsed_data()
@@ -91,6 +92,8 @@ defmodule Pleroma.Web.RichMedia.Parser do
     end
   end
 
+  defp parse_html(html), do: Floki.parse(html)
+
   defp maybe_parse(html) do
     Enum.reduce_while(parsers(), %{}, fn parser, acc ->
       case parser.parse(html, acc) do
@@ -100,7 +103,8 @@ defmodule Pleroma.Web.RichMedia.Parser do
     end)
   end
 
-  defp check_parsed_data(%{title: title} = data) when is_binary(title) and byte_size(title) > 0 do
+  defp check_parsed_data(%{title: title} = data)
+       when is_binary(title) and byte_size(title) > 0 do
     {:ok, data}
   end
 
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index 7cd59acb2..b9b85fd67 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -135,6 +135,7 @@ defmodule Pleroma.Web.Router do
 
   pipeline :http_signature do
     plug(Pleroma.Web.Plugs.HTTPSignaturePlug)
+    plug(Pleroma.Web.Plugs.MappedSignatureToIdentityPlug)
   end
 
   scope "/api/pleroma", Pleroma.Web.TwitterAPI do
@@ -179,7 +180,7 @@ defmodule Pleroma.Web.Router do
     post("/relay", AdminAPIController, :relay_follow)
     delete("/relay", AdminAPIController, :relay_unfollow)
 
-    get("/users/invite_token", AdminAPIController, :get_invite_token)
+    post("/users/invite_token", AdminAPIController, :create_invite_token)
     get("/users/invites", AdminAPIController, :invites)
     post("/users/revoke_invite", AdminAPIController, :revoke_invite)
     post("/users/email_invite", AdminAPIController, :email_invite)
@@ -224,6 +225,7 @@ defmodule Pleroma.Web.Router do
     scope [] do
       pipe_through(:oauth_write)
 
+      post("/change_email", UtilController, :change_email)
       post("/change_password", UtilController, :change_password)
       post("/delete_account", UtilController, :delete_account)
       put("/notification_settings", UtilController, :update_notificaton_settings)
@@ -513,6 +515,7 @@ defmodule Pleroma.Web.Router do
 
   scope "/", Pleroma.Web do
     pipe_through(:ostatus)
+    pipe_through(:http_signature)
 
     get("/objects/:uuid", OStatus.OStatusController, :object)
     get("/activities/:uuid", OStatus.OStatusController, :activity)
diff --git a/lib/pleroma/web/salmon/salmon.ex b/lib/pleroma/web/salmon/salmon.ex
index 9b01ebcc6..8ba7380c0 100644
--- a/lib/pleroma/web/salmon/salmon.ex
+++ b/lib/pleroma/web/salmon/salmon.ex
@@ -170,6 +170,15 @@ defmodule Pleroma.Web.Salmon do
     end
   end
 
+  def publish_one(%{recipient_id: recipient_id} = params) do
+    recipient = User.get_cached_by_id(recipient_id)
+
+    params
+    |> Map.delete(:recipient_id)
+    |> Map.put(:recipient, recipient)
+    |> publish_one()
+  end
+
   def publish_one(_), do: :noop
 
   @supported_activities [
@@ -218,7 +227,7 @@ defmodule Pleroma.Web.Salmon do
         Logger.debug(fn -> "Sending Salmon to #{remote_user.ap_id}" end)
 
         Publisher.enqueue_one(__MODULE__, %{
-          recipient: remote_user,
+          recipient_id: remote_user.id,
           feed: feed,
           unreachable_since: reachable_urls_metadata[remote_user.info.salmon]
         })
diff --git a/lib/pleroma/web/streamer.ex b/lib/pleroma/web/streamer.ex
deleted file mode 100644
index 587c43f40..000000000
--- a/lib/pleroma/web/streamer.ex
+++ /dev/null
@@ -1,318 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Web.Streamer do
-  use GenServer
-  require Logger
-  alias Pleroma.Activity
-  alias Pleroma.Config
-  alias Pleroma.Conversation.Participation
-  alias Pleroma.Notification
-  alias Pleroma.Object
-  alias Pleroma.User
-  alias Pleroma.Web.ActivityPub.ActivityPub
-  alias Pleroma.Web.ActivityPub.Visibility
-  alias Pleroma.Web.CommonAPI
-  alias Pleroma.Web.MastodonAPI.NotificationView
-
-  @keepalive_interval :timer.seconds(30)
-
-  def start_link(_) do
-    GenServer.start_link(__MODULE__, %{}, name: __MODULE__)
-  end
-
-  def add_socket(topic, socket) do
-    GenServer.cast(__MODULE__, %{action: :add, socket: socket, topic: topic})
-  end
-
-  def remove_socket(topic, socket) do
-    GenServer.cast(__MODULE__, %{action: :remove, socket: socket, topic: topic})
-  end
-
-  def stream(topic, item) do
-    GenServer.cast(__MODULE__, %{action: :stream, topic: topic, item: item})
-  end
-
-  def init(args) do
-    Process.send_after(self(), %{action: :ping}, @keepalive_interval)
-
-    {:ok, args}
-  end
-
-  def handle_info(%{action: :ping}, topics) do
-    topics
-    |> Map.values()
-    |> List.flatten()
-    |> Enum.each(fn socket ->
-      Logger.debug("Sending keepalive ping")
-      send(socket.transport_pid, {:text, ""})
-    end)
-
-    Process.send_after(self(), %{action: :ping}, @keepalive_interval)
-
-    {:noreply, topics}
-  end
-
-  def handle_cast(%{action: :stream, topic: "direct", item: item}, topics) do
-    recipient_topics =
-      User.get_recipients_from_activity(item)
-      |> Enum.map(fn %{id: id} -> "direct:#{id}" end)
-
-    Enum.each(recipient_topics || [], fn user_topic ->
-      Logger.debug("Trying to push direct message to #{user_topic}\n\n")
-      push_to_socket(topics, user_topic, item)
-    end)
-
-    {:noreply, topics}
-  end
-
-  def handle_cast(%{action: :stream, topic: "participation", item: participation}, topics) do
-    user_topic = "direct:#{participation.user_id}"
-    Logger.debug("Trying to push a conversation participation to #{user_topic}\n\n")
-
-    push_to_socket(topics, user_topic, participation)
-
-    {:noreply, topics}
-  end
-
-  def handle_cast(%{action: :stream, topic: "list", item: item}, topics) do
-    # filter the recipient list if the activity is not public, see #270.
-    recipient_lists =
-      case Visibility.is_public?(item) do
-        true ->
-          Pleroma.List.get_lists_from_activity(item)
-
-        _ ->
-          Pleroma.List.get_lists_from_activity(item)
-          |> Enum.filter(fn list ->
-            owner = User.get_cached_by_id(list.user_id)
-
-            Visibility.visible_for_user?(item, owner)
-          end)
-      end
-
-    recipient_topics =
-      recipient_lists
-      |> Enum.map(fn %{id: id} -> "list:#{id}" end)
-
-    Enum.each(recipient_topics || [], fn list_topic ->
-      Logger.debug("Trying to push message to #{list_topic}\n\n")
-      push_to_socket(topics, list_topic, item)
-    end)
-
-    {:noreply, topics}
-  end
-
-  def handle_cast(
-        %{action: :stream, topic: topic, item: %Notification{} = item},
-        topics
-      )
-      when topic in ["user", "user:notification"] do
-    topics
-    |> Map.get("#{topic}:#{item.user_id}", [])
-    |> Enum.each(fn socket ->
-      with %User{} = user <- User.get_cached_by_ap_id(socket.assigns[:user].ap_id),
-           true <- should_send?(user, item) do
-        send(
-          socket.transport_pid,
-          {:text, represent_notification(socket.assigns[:user], item)}
-        )
-      end
-    end)
-
-    {:noreply, topics}
-  end
-
-  def handle_cast(%{action: :stream, topic: "user", item: item}, topics) do
-    Logger.debug("Trying to push to users")
-
-    recipient_topics =
-      User.get_recipients_from_activity(item)
-      |> Enum.map(fn %{id: id} -> "user:#{id}" end)
-
-    Enum.each(recipient_topics, fn topic ->
-      push_to_socket(topics, topic, item)
-    end)
-
-    {:noreply, topics}
-  end
-
-  def handle_cast(%{action: :stream, topic: topic, item: item}, topics) do
-    Logger.debug("Trying to push to #{topic}")
-    Logger.debug("Pushing item to #{topic}")
-    push_to_socket(topics, topic, item)
-    {:noreply, topics}
-  end
-
-  def handle_cast(%{action: :add, topic: topic, socket: socket}, sockets) do
-    topic = internal_topic(topic, socket)
-    sockets_for_topic = sockets[topic] || []
-    sockets_for_topic = Enum.uniq([socket | sockets_for_topic])
-    sockets = Map.put(sockets, topic, sockets_for_topic)
-    Logger.debug("Got new conn for #{topic}")
-    {:noreply, sockets}
-  end
-
-  def handle_cast(%{action: :remove, topic: topic, socket: socket}, sockets) do
-    topic = internal_topic(topic, socket)
-    sockets_for_topic = sockets[topic] || []
-    sockets_for_topic = List.delete(sockets_for_topic, socket)
-    sockets = Map.put(sockets, topic, sockets_for_topic)
-    Logger.debug("Removed conn for #{topic}")
-    {:noreply, sockets}
-  end
-
-  def handle_cast(m, state) do
-    Logger.info("Unknown: #{inspect(m)}, #{inspect(state)}")
-    {:noreply, state}
-  end
-
-  defp represent_update(%Activity{} = activity, %User{} = user) do
-    %{
-      event: "update",
-      payload:
-        Pleroma.Web.MastodonAPI.StatusView.render(
-          "status.json",
-          activity: activity,
-          for: user
-        )
-        |> Jason.encode!()
-    }
-    |> Jason.encode!()
-  end
-
-  defp represent_update(%Activity{} = activity) do
-    %{
-      event: "update",
-      payload:
-        Pleroma.Web.MastodonAPI.StatusView.render(
-          "status.json",
-          activity: activity
-        )
-        |> Jason.encode!()
-    }
-    |> Jason.encode!()
-  end
-
-  def represent_conversation(%Participation{} = participation) do
-    %{
-      event: "conversation",
-      payload:
-        Pleroma.Web.MastodonAPI.ConversationView.render("participation.json", %{
-          participation: participation,
-          for: participation.user
-        })
-        |> Jason.encode!()
-    }
-    |> Jason.encode!()
-  end
-
-  @spec represent_notification(User.t(), Notification.t()) :: binary()
-  defp represent_notification(%User{} = user, %Notification{} = notify) do
-    %{
-      event: "notification",
-      payload:
-        NotificationView.render(
-          "show.json",
-          %{notification: notify, for: user}
-        )
-        |> Jason.encode!()
-    }
-    |> Jason.encode!()
-  end
-
-  defp should_send?(%User{} = user, %Activity{} = item) do
-    blocks = user.info.blocks || []
-    mutes = user.info.mutes || []
-    reblog_mutes = user.info.muted_reblogs || []
-    domain_blocks = Pleroma.Web.ActivityPub.MRF.subdomains_regex(user.info.domain_blocks)
-
-    with parent when not is_nil(parent) <- Object.normalize(item),
-         true <- Enum.all?([blocks, mutes, reblog_mutes], &(item.actor not in &1)),
-         true <- Enum.all?([blocks, mutes], &(parent.data["actor"] not in &1)),
-         %{host: item_host} <- URI.parse(item.actor),
-         %{host: parent_host} <- URI.parse(parent.data["actor"]),
-         false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, item_host),
-         false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, parent_host),
-         true <- thread_containment(item, user),
-         false <- CommonAPI.thread_muted?(user, item) do
-      true
-    else
-      _ -> false
-    end
-  end
-
-  defp should_send?(%User{} = user, %Notification{activity: activity}) do
-    should_send?(user, activity)
-  end
-
-  def push_to_socket(topics, topic, %Activity{data: %{"type" => "Announce"}} = item) do
-    Enum.each(topics[topic] || [], fn socket ->
-      # Get the current user so we have up-to-date blocks etc.
-      if socket.assigns[:user] do
-        user = User.get_cached_by_ap_id(socket.assigns[:user].ap_id)
-
-        if should_send?(user, item) do
-          send(socket.transport_pid, {:text, represent_update(item, user)})
-        end
-      else
-        send(socket.transport_pid, {:text, represent_update(item)})
-      end
-    end)
-  end
-
-  def push_to_socket(topics, topic, %Participation{} = participation) do
-    Enum.each(topics[topic] || [], fn socket ->
-      send(socket.transport_pid, {:text, represent_conversation(participation)})
-    end)
-  end
-
-  def push_to_socket(topics, topic, %Activity{
-        data: %{"type" => "Delete", "deleted_activity_id" => deleted_activity_id}
-      }) do
-    Enum.each(topics[topic] || [], fn socket ->
-      send(
-        socket.transport_pid,
-        {:text, %{event: "delete", payload: to_string(deleted_activity_id)} |> Jason.encode!()}
-      )
-    end)
-  end
-
-  def push_to_socket(_topics, _topic, %Activity{data: %{"type" => "Delete"}}), do: :noop
-
-  def push_to_socket(topics, topic, item) do
-    Enum.each(topics[topic] || [], fn socket ->
-      # Get the current user so we have up-to-date blocks etc.
-      if socket.assigns[:user] do
-        user = User.get_cached_by_ap_id(socket.assigns[:user].ap_id)
-        blocks = user.info.blocks || []
-        mutes = user.info.mutes || []
-
-        with true <- Enum.all?([blocks, mutes], &(item.actor not in &1)),
-             true <- thread_containment(item, user) do
-          send(socket.transport_pid, {:text, represent_update(item, user)})
-        end
-      else
-        send(socket.transport_pid, {:text, represent_update(item)})
-      end
-    end)
-  end
-
-  defp internal_topic(topic, socket) when topic in ~w[user user:notification direct] do
-    "#{topic}:#{socket.assigns[:user].id}"
-  end
-
-  defp internal_topic(topic, _), do: topic
-
-  @spec thread_containment(Activity.t(), User.t()) :: boolean()
-  defp thread_containment(_activity, %User{info: %{skip_thread_containment: true}}), do: true
-
-  defp thread_containment(activity, user) do
-    if Config.get([:instance, :skip_thread_containment]) do
-      true
-    else
-      ActivityPub.contain_activity(activity, user)
-    end
-  end
-end
diff --git a/lib/pleroma/web/streamer/ping.ex b/lib/pleroma/web/streamer/ping.ex
new file mode 100644
index 000000000..f77cbb95c
--- /dev/null
+++ b/lib/pleroma/web/streamer/ping.ex
@@ -0,0 +1,33 @@
+defmodule Pleroma.Web.Streamer.Ping do
+  use GenServer
+  require Logger
+
+  alias Pleroma.Web.Streamer.State
+  alias Pleroma.Web.Streamer.StreamerSocket
+
+  @keepalive_interval :timer.seconds(30)
+
+  def start_link(opts) do
+    ping_interval = Keyword.get(opts, :ping_interval, @keepalive_interval)
+    GenServer.start_link(__MODULE__, %{ping_interval: ping_interval}, name: __MODULE__)
+  end
+
+  def init(%{ping_interval: ping_interval} = args) do
+    Process.send_after(self(), :ping, ping_interval)
+    {:ok, args}
+  end
+
+  def handle_info(:ping, %{ping_interval: ping_interval} = state) do
+    State.get_sockets()
+    |> Map.values()
+    |> List.flatten()
+    |> Enum.each(fn %StreamerSocket{transport_pid: transport_pid} ->
+      Logger.debug("Sending keepalive ping")
+      send(transport_pid, {:text, ""})
+    end)
+
+    Process.send_after(self(), :ping, ping_interval)
+
+    {:noreply, state}
+  end
+end
diff --git a/lib/pleroma/web/streamer/state.ex b/lib/pleroma/web/streamer/state.ex
new file mode 100644
index 000000000..c48752d95
--- /dev/null
+++ b/lib/pleroma/web/streamer/state.ex
@@ -0,0 +1,78 @@
+defmodule Pleroma.Web.Streamer.State do
+  use GenServer
+  require Logger
+
+  alias Pleroma.Web.Streamer.StreamerSocket
+
+  @env Mix.env()
+
+  def start_link(_) do
+    GenServer.start_link(__MODULE__, %{sockets: %{}}, name: __MODULE__)
+  end
+
+  def add_socket(topic, socket) do
+    GenServer.call(__MODULE__, {:add, topic, socket})
+  end
+
+  def remove_socket(topic, socket) do
+    do_remove_socket(@env, topic, socket)
+  end
+
+  def get_sockets do
+    %{sockets: stream_sockets} = GenServer.call(__MODULE__, :get_state)
+    stream_sockets
+  end
+
+  def init(init_arg) do
+    {:ok, init_arg}
+  end
+
+  def handle_call(:get_state, _from, state) do
+    {:reply, state, state}
+  end
+
+  def handle_call({:add, topic, socket}, _from, %{sockets: sockets} = state) do
+    internal_topic = internal_topic(topic, socket)
+    stream_socket = StreamerSocket.from_socket(socket)
+
+    sockets_for_topic =
+      sockets
+      |> Map.get(internal_topic, [])
+      |> List.insert_at(0, stream_socket)
+      |> Enum.uniq()
+
+    state = put_in(state, [:sockets, internal_topic], sockets_for_topic)
+    Logger.debug("Got new conn for #{topic}")
+    {:reply, state, state}
+  end
+
+  def handle_call({:remove, topic, socket}, _from, %{sockets: sockets} = state) do
+    internal_topic = internal_topic(topic, socket)
+    stream_socket = StreamerSocket.from_socket(socket)
+
+    sockets_for_topic =
+      sockets
+      |> Map.get(internal_topic, [])
+      |> List.delete(stream_socket)
+
+    state = Kernel.put_in(state, [:sockets, internal_topic], sockets_for_topic)
+    {:reply, state, state}
+  end
+
+  defp do_remove_socket(:test, _, _) do
+    :ok
+  end
+
+  defp do_remove_socket(_env, topic, socket) do
+    GenServer.call(__MODULE__, {:remove, topic, socket})
+  end
+
+  defp internal_topic(topic, socket)
+       when topic in ~w[user user:notification direct] do
+    "#{topic}:#{socket.assigns[:user].id}"
+  end
+
+  defp internal_topic(topic, _) do
+    topic
+  end
+end
diff --git a/lib/pleroma/web/streamer/streamer.ex b/lib/pleroma/web/streamer/streamer.ex
new file mode 100644
index 000000000..8cf719277
--- /dev/null
+++ b/lib/pleroma/web/streamer/streamer.ex
@@ -0,0 +1,55 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.Streamer do
+  alias Pleroma.Web.Streamer.State
+  alias Pleroma.Web.Streamer.Worker
+
+  @timeout 60_000
+  @mix_env Mix.env()
+
+  def add_socket(topic, socket) do
+    State.add_socket(topic, socket)
+  end
+
+  def remove_socket(topic, socket) do
+    State.remove_socket(topic, socket)
+  end
+
+  def get_sockets do
+    State.get_sockets()
+  end
+
+  def stream(topics, items) do
+    if should_send?() do
+      Task.async(fn ->
+        :poolboy.transaction(
+          :streamer_worker,
+          &Worker.stream(&1, topics, items),
+          @timeout
+        )
+      end)
+    end
+  end
+
+  def supervisor, do: Pleroma.Web.Streamer.Supervisor
+
+  defp should_send? do
+    handle_should_send(@mix_env)
+  end
+
+  defp handle_should_send(:test) do
+    case Process.whereis(:streamer_worker) do
+      nil ->
+        false
+
+      pid ->
+        Process.alive?(pid)
+    end
+  end
+
+  defp handle_should_send(_) do
+    true
+  end
+end
diff --git a/lib/pleroma/web/streamer/streamer_socket.ex b/lib/pleroma/web/streamer/streamer_socket.ex
new file mode 100644
index 000000000..f006c0306
--- /dev/null
+++ b/lib/pleroma/web/streamer/streamer_socket.ex
@@ -0,0 +1,31 @@
+defmodule Pleroma.Web.Streamer.StreamerSocket do
+  defstruct transport_pid: nil, user: nil
+
+  alias Pleroma.User
+  alias Pleroma.Web.Streamer.StreamerSocket
+
+  def from_socket(%{
+        transport_pid: transport_pid,
+        assigns: %{user: nil}
+      }) do
+    %StreamerSocket{
+      transport_pid: transport_pid
+    }
+  end
+
+  def from_socket(%{
+        transport_pid: transport_pid,
+        assigns: %{user: %User{} = user}
+      }) do
+    %StreamerSocket{
+      transport_pid: transport_pid,
+      user: user
+    }
+  end
+
+  def from_socket(%{transport_pid: transport_pid}) do
+    %StreamerSocket{
+      transport_pid: transport_pid
+    }
+  end
+end
diff --git a/lib/pleroma/web/streamer/supervisor.ex b/lib/pleroma/web/streamer/supervisor.ex
new file mode 100644
index 000000000..6afe19323
--- /dev/null
+++ b/lib/pleroma/web/streamer/supervisor.ex
@@ -0,0 +1,33 @@
+defmodule Pleroma.Web.Streamer.Supervisor do
+  use Supervisor
+
+  def start_link(opts) do
+    Supervisor.start_link(__MODULE__, opts, name: __MODULE__)
+  end
+
+  def init(args) do
+    children = [
+      {Pleroma.Web.Streamer.State, args},
+      {Pleroma.Web.Streamer.Ping, args},
+      :poolboy.child_spec(:streamer_worker, poolboy_config())
+    ]
+
+    opts = [strategy: :one_for_one, name: Pleroma.Web.Streamer.Supervisor]
+    Supervisor.init(children, opts)
+  end
+
+  defp poolboy_config do
+    opts =
+      Pleroma.Config.get(:streamer,
+        workers: 3,
+        overflow_workers: 2
+      )
+
+    [
+      {:name, {:local, :streamer_worker}},
+      {:worker_module, Pleroma.Web.Streamer.Worker},
+      {:size, opts[:workers]},
+      {:max_overflow, opts[:overflow_workers]}
+    ]
+  end
+end
diff --git a/lib/pleroma/web/streamer/worker.ex b/lib/pleroma/web/streamer/worker.ex
new file mode 100644
index 000000000..5804508eb
--- /dev/null
+++ b/lib/pleroma/web/streamer/worker.ex
@@ -0,0 +1,220 @@
+defmodule Pleroma.Web.Streamer.Worker do
+  use GenServer
+
+  require Logger
+
+  alias Pleroma.Activity
+  alias Pleroma.Config
+  alias Pleroma.Conversation.Participation
+  alias Pleroma.Notification
+  alias Pleroma.Object
+  alias Pleroma.User
+  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.ActivityPub.Visibility
+  alias Pleroma.Web.CommonAPI
+  alias Pleroma.Web.Streamer.State
+  alias Pleroma.Web.Streamer.StreamerSocket
+  alias Pleroma.Web.StreamerView
+
+  def start_link(_) do
+    GenServer.start_link(__MODULE__, %{}, [])
+  end
+
+  def init(init_arg) do
+    {:ok, init_arg}
+  end
+
+  def stream(pid, topics, items) do
+    GenServer.call(pid, {:stream, topics, items})
+  end
+
+  def handle_call({:stream, topics, item}, _from, state) when is_list(topics) do
+    Enum.each(topics, fn t ->
+      do_stream(%{topic: t, item: item})
+    end)
+
+    {:reply, state, state}
+  end
+
+  def handle_call({:stream, topic, items}, _from, state) when is_list(items) do
+    Enum.each(items, fn i ->
+      do_stream(%{topic: topic, item: i})
+    end)
+
+    {:reply, state, state}
+  end
+
+  def handle_call({:stream, topic, item}, _from, state) do
+    do_stream(%{topic: topic, item: item})
+
+    {:reply, state, state}
+  end
+
+  defp do_stream(%{topic: "direct", item: item}) do
+    recipient_topics =
+      User.get_recipients_from_activity(item)
+      |> Enum.map(fn %{id: id} -> "direct:#{id}" end)
+
+    Enum.each(recipient_topics, fn user_topic ->
+      Logger.debug("Trying to push direct message to #{user_topic}\n\n")
+      push_to_socket(State.get_sockets(), user_topic, item)
+    end)
+  end
+
+  defp do_stream(%{topic: "participation", item: participation}) do
+    user_topic = "direct:#{participation.user_id}"
+    Logger.debug("Trying to push a conversation participation to #{user_topic}\n\n")
+
+    push_to_socket(State.get_sockets(), user_topic, participation)
+  end
+
+  defp do_stream(%{topic: "list", item: item}) do
+    # filter the recipient list if the activity is not public, see #270.
+    recipient_lists =
+      case Visibility.is_public?(item) do
+        true ->
+          Pleroma.List.get_lists_from_activity(item)
+
+        _ ->
+          Pleroma.List.get_lists_from_activity(item)
+          |> Enum.filter(fn list ->
+            owner = User.get_cached_by_id(list.user_id)
+
+            Visibility.visible_for_user?(item, owner)
+          end)
+      end
+
+    recipient_topics =
+      recipient_lists
+      |> Enum.map(fn %{id: id} -> "list:#{id}" end)
+
+    Enum.each(recipient_topics, fn list_topic ->
+      Logger.debug("Trying to push message to #{list_topic}\n\n")
+      push_to_socket(State.get_sockets(), list_topic, item)
+    end)
+  end
+
+  defp do_stream(%{topic: topic, item: %Notification{} = item})
+       when topic in ["user", "user:notification"] do
+    State.get_sockets()
+    |> Map.get("#{topic}:#{item.user_id}", [])
+    |> Enum.each(fn %StreamerSocket{transport_pid: transport_pid, user: socket_user} ->
+      with %User{} = user <- User.get_cached_by_ap_id(socket_user.ap_id),
+           true <- should_send?(user, item) do
+        send(transport_pid, {:text, StreamerView.render("notification.json", socket_user, item)})
+      end
+    end)
+  end
+
+  defp do_stream(%{topic: "user", item: item}) do
+    Logger.debug("Trying to push to users")
+
+    recipient_topics =
+      User.get_recipients_from_activity(item)
+      |> Enum.map(fn %{id: id} -> "user:#{id}" end)
+
+    Enum.each(recipient_topics, fn topic ->
+      push_to_socket(State.get_sockets(), topic, item)
+    end)
+  end
+
+  defp do_stream(%{topic: topic, item: item}) do
+    Logger.debug("Trying to push to #{topic}")
+    Logger.debug("Pushing item to #{topic}")
+    push_to_socket(State.get_sockets(), topic, item)
+  end
+
+  defp should_send?(%User{} = user, %Activity{} = item) do
+    blocks = user.info.blocks || []
+    mutes = user.info.mutes || []
+    reblog_mutes = user.info.muted_reblogs || []
+    domain_blocks = Pleroma.Web.ActivityPub.MRF.subdomains_regex(user.info.domain_blocks)
+
+    with parent when not is_nil(parent) <- Object.normalize(item),
+         true <- Enum.all?([blocks, mutes, reblog_mutes], &(item.actor not in &1)),
+         true <- Enum.all?([blocks, mutes], &(parent.data["actor"] not in &1)),
+         %{host: item_host} <- URI.parse(item.actor),
+         %{host: parent_host} <- URI.parse(parent.data["actor"]),
+         false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, item_host),
+         false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, parent_host),
+         true <- thread_containment(item, user),
+         false <- CommonAPI.thread_muted?(user, item) do
+      true
+    else
+      _ -> false
+    end
+  end
+
+  defp should_send?(%User{} = user, %Notification{activity: activity}) do
+    should_send?(user, activity)
+  end
+
+  def push_to_socket(topics, topic, %Activity{data: %{"type" => "Announce"}} = item) do
+    Enum.each(topics[topic] || [], fn %StreamerSocket{
+                                        transport_pid: transport_pid,
+                                        user: socket_user
+                                      } ->
+      # Get the current user so we have up-to-date blocks etc.
+      if socket_user do
+        user = User.get_cached_by_ap_id(socket_user.ap_id)
+
+        if should_send?(user, item) do
+          send(transport_pid, {:text, StreamerView.render("update.json", item, user)})
+        end
+      else
+        send(transport_pid, {:text, StreamerView.render("update.json", item)})
+      end
+    end)
+  end
+
+  def push_to_socket(topics, topic, %Participation{} = participation) do
+    Enum.each(topics[topic] || [], fn %StreamerSocket{transport_pid: transport_pid} ->
+      send(transport_pid, {:text, StreamerView.render("conversation.json", participation)})
+    end)
+  end
+
+  def push_to_socket(topics, topic, %Activity{
+        data: %{"type" => "Delete", "deleted_activity_id" => deleted_activity_id}
+      }) do
+    Enum.each(topics[topic] || [], fn %StreamerSocket{transport_pid: transport_pid} ->
+      send(
+        transport_pid,
+        {:text, %{event: "delete", payload: to_string(deleted_activity_id)} |> Jason.encode!()}
+      )
+    end)
+  end
+
+  def push_to_socket(_topics, _topic, %Activity{data: %{"type" => "Delete"}}), do: :noop
+
+  def push_to_socket(topics, topic, item) do
+    Enum.each(topics[topic] || [], fn %StreamerSocket{
+                                        transport_pid: transport_pid,
+                                        user: socket_user
+                                      } ->
+      # Get the current user so we have up-to-date blocks etc.
+      if socket_user do
+        user = User.get_cached_by_ap_id(socket_user.ap_id)
+        blocks = user.info.blocks || []
+        mutes = user.info.mutes || []
+
+        with true <- Enum.all?([blocks, mutes], &(item.actor not in &1)),
+             true <- thread_containment(item, user) do
+          send(transport_pid, {:text, StreamerView.render("update.json", item, user)})
+        end
+      else
+        send(transport_pid, {:text, StreamerView.render("update.json", item)})
+      end
+    end)
+  end
+
+  @spec thread_containment(Activity.t(), User.t()) :: boolean()
+  defp thread_containment(_activity, %User{info: %{skip_thread_containment: true}}), do: true
+
+  defp thread_containment(activity, user) do
+    if Config.get([:instance, :skip_thread_containment]) do
+      true
+    else
+      ActivityPub.contain_activity(activity, user)
+    end
+  end
+end
diff --git a/lib/pleroma/web/twitter_api/controllers/util_controller.ex b/lib/pleroma/web/twitter_api/controllers/util_controller.ex
index 3405bd3b7..d7745ae7a 100644
--- a/lib/pleroma/web/twitter_api/controllers/util_controller.ex
+++ b/lib/pleroma/web/twitter_api/controllers/util_controller.ex
@@ -265,12 +265,7 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
              String.split(line, ",") |> List.first()
            end)
            |> List.delete("Account address") do
-      PleromaJobQueue.enqueue(:background, User, [
-        :follow_import,
-        follower,
-        followed_identifiers
-      ])
-
+      User.follow_import(follower, followed_identifiers)
       json(conn, "job started")
     end
   end
@@ -281,12 +276,7 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
 
   def blocks_import(%{assigns: %{user: blocker}} = conn, %{"list" => list}) do
     with blocked_identifiers <- String.split(list) do
-      PleromaJobQueue.enqueue(:background, User, [
-        :blocks_import,
-        blocker,
-        blocked_identifiers
-      ])
-
+      User.blocks_import(blocker, blocked_identifiers)
       json(conn, "job started")
     end
   end
@@ -314,6 +304,25 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
     end
   end
 
+  def change_email(%{assigns: %{user: user}} = conn, params) do
+    case CommonAPI.Utils.confirm_current_password(user, params["password"]) do
+      {:ok, user} ->
+        with {:ok, _user} <- User.change_email(user, params["email"]) do
+          json(conn, %{status: "success"})
+        else
+          {:error, changeset} ->
+            {_, {error, _}} = Enum.at(changeset.errors, 0)
+            json(conn, %{error: "Email #{error}."})
+
+          _ ->
+            json(conn, %{error: "Unable to change email."})
+        end
+
+      {:error, msg} ->
+        json(conn, %{error: msg})
+    end
+  end
+
   def delete_account(%{assigns: %{user: user}} = conn, params) do
     case CommonAPI.Utils.confirm_current_password(user, params["password"]) do
       {:ok, user} ->
diff --git a/lib/pleroma/web/views/streamer_view.ex b/lib/pleroma/web/views/streamer_view.ex
new file mode 100644
index 000000000..b13030fa0
--- /dev/null
+++ b/lib/pleroma/web/views/streamer_view.ex
@@ -0,0 +1,66 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.StreamerView do
+  use Pleroma.Web, :view
+
+  alias Pleroma.Activity
+  alias Pleroma.Conversation.Participation
+  alias Pleroma.Notification
+  alias Pleroma.User
+  alias Pleroma.Web.MastodonAPI.NotificationView
+
+  def render("update.json", %Activity{} = activity, %User{} = user) do
+    %{
+      event: "update",
+      payload:
+        Pleroma.Web.MastodonAPI.StatusView.render(
+          "status.json",
+          activity: activity,
+          for: user
+        )
+        |> Jason.encode!()
+    }
+    |> Jason.encode!()
+  end
+
+  def render("notification.json", %User{} = user, %Notification{} = notify) do
+    %{
+      event: "notification",
+      payload:
+        NotificationView.render(
+          "show.json",
+          %{notification: notify, for: user}
+        )
+        |> Jason.encode!()
+    }
+    |> Jason.encode!()
+  end
+
+  def render("update.json", %Activity{} = activity) do
+    %{
+      event: "update",
+      payload:
+        Pleroma.Web.MastodonAPI.StatusView.render(
+          "status.json",
+          activity: activity
+        )
+        |> Jason.encode!()
+    }
+    |> Jason.encode!()
+  end
+
+  def render("conversation.json", %Participation{} = participation) do
+    %{
+      event: "conversation",
+      payload:
+        Pleroma.Web.MastodonAPI.ConversationView.render("participation.json", %{
+          participation: participation,
+          for: participation.user
+        })
+        |> Jason.encode!()
+    }
+    |> Jason.encode!()
+  end
+end
diff --git a/lib/pleroma/workers/activity_expiration_worker.ex b/lib/pleroma/workers/activity_expiration_worker.ex
new file mode 100644
index 000000000..4e3e4195f
--- /dev/null
+++ b/lib/pleroma/workers/activity_expiration_worker.ex
@@ -0,0 +1,18 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.ActivityExpirationWorker do
+  use Pleroma.Workers.WorkerHelper, queue: "activity_expiration"
+
+  @impl Oban.Worker
+  def perform(
+        %{
+          "op" => "activity_expiration",
+          "activity_expiration_id" => activity_expiration_id
+        },
+        _job
+      ) do
+    Pleroma.Daemons.ActivityExpirationDaemon.perform(:execute, activity_expiration_id)
+  end
+end
diff --git a/lib/pleroma/workers/background_worker.ex b/lib/pleroma/workers/background_worker.ex
new file mode 100644
index 000000000..082f20ab7
--- /dev/null
+++ b/lib/pleroma/workers/background_worker.ex
@@ -0,0 +1,69 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.BackgroundWorker do
+  alias Pleroma.Activity
+  alias Pleroma.User
+  alias Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy
+  alias Pleroma.Web.OAuth.Token.CleanWorker
+
+  use Pleroma.Workers.WorkerHelper, queue: "background"
+
+  @impl Oban.Worker
+  def perform(%{"op" => "fetch_initial_posts", "user_id" => user_id}, _job) do
+    user = User.get_cached_by_id(user_id)
+    User.perform(:fetch_initial_posts, user)
+  end
+
+  def perform(%{"op" => "deactivate_user", "user_id" => user_id, "status" => status}, _job) do
+    user = User.get_cached_by_id(user_id)
+    User.perform(:deactivate_async, user, status)
+  end
+
+  def perform(%{"op" => "delete_user", "user_id" => user_id}, _job) do
+    user = User.get_cached_by_id(user_id)
+    User.perform(:delete, user)
+  end
+
+  def perform(
+        %{
+          "op" => "blocks_import",
+          "blocker_id" => blocker_id,
+          "blocked_identifiers" => blocked_identifiers
+        },
+        _job
+      ) do
+    blocker = User.get_cached_by_id(blocker_id)
+    User.perform(:blocks_import, blocker, blocked_identifiers)
+  end
+
+  def perform(
+        %{
+          "op" => "follow_import",
+          "follower_id" => follower_id,
+          "followed_identifiers" => followed_identifiers
+        },
+        _job
+      ) do
+    follower = User.get_cached_by_id(follower_id)
+    User.perform(:follow_import, follower, followed_identifiers)
+  end
+
+  def perform(%{"op" => "clean_expired_tokens"}, _job) do
+    CleanWorker.perform(:clean)
+  end
+
+  def perform(%{"op" => "media_proxy_preload", "message" => message}, _job) do
+    MediaProxyWarmingPolicy.perform(:preload, message)
+  end
+
+  def perform(%{"op" => "media_proxy_prefetch", "url" => url}, _job) do
+    MediaProxyWarmingPolicy.perform(:prefetch, url)
+  end
+
+  def perform(%{"op" => "fetch_data_for_activity", "activity_id" => activity_id}, _job) do
+    activity = Activity.get_by_id(activity_id)
+    Pleroma.Web.RichMedia.Helpers.perform(:fetch, activity)
+  end
+end
diff --git a/lib/pleroma/workers/digest_emails_worker.ex b/lib/pleroma/workers/digest_emails_worker.ex
new file mode 100644
index 000000000..3e5a836d0
--- /dev/null
+++ b/lib/pleroma/workers/digest_emails_worker.ex
@@ -0,0 +1,16 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.DigestEmailsWorker do
+  alias Pleroma.User
+
+  use Pleroma.Workers.WorkerHelper, queue: "digest_emails"
+
+  @impl Oban.Worker
+  def perform(%{"op" => "digest_email", "user_id" => user_id}, _job) do
+    user_id
+    |> User.get_cached_by_id()
+    |> Pleroma.Daemons.DigestEmailDaemon.perform()
+  end
+end
diff --git a/lib/pleroma/workers/mailer_worker.ex b/lib/pleroma/workers/mailer_worker.ex
new file mode 100644
index 000000000..1b7a0eb3e
--- /dev/null
+++ b/lib/pleroma/workers/mailer_worker.ex
@@ -0,0 +1,15 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.MailerWorker do
+  use Pleroma.Workers.WorkerHelper, queue: "mailer"
+
+  @impl Oban.Worker
+  def perform(%{"op" => "email", "encoded_email" => encoded_email, "config" => config}, _job) do
+    encoded_email
+    |> Base.decode64!()
+    |> :erlang.binary_to_term()
+    |> Pleroma.Emails.Mailer.deliver(config)
+  end
+end
diff --git a/lib/pleroma/workers/publisher_worker.ex b/lib/pleroma/workers/publisher_worker.ex
new file mode 100644
index 000000000..455f7fc7e
--- /dev/null
+++ b/lib/pleroma/workers/publisher_worker.ex
@@ -0,0 +1,25 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.PublisherWorker do
+  alias Pleroma.Activity
+  alias Pleroma.Web.Federator
+
+  use Pleroma.Workers.WorkerHelper, queue: "federator_outgoing"
+
+  def backoff(attempt) when is_integer(attempt) do
+    Pleroma.Workers.WorkerHelper.sidekiq_backoff(attempt, 5)
+  end
+
+  @impl Oban.Worker
+  def perform(%{"op" => "publish", "activity_id" => activity_id}, _job) do
+    activity = Activity.get_by_id(activity_id)
+    Federator.perform(:publish, activity)
+  end
+
+  def perform(%{"op" => "publish_one", "module" => module_name, "params" => params}, _job) do
+    params = Map.new(params, fn {k, v} -> {String.to_atom(k), v} end)
+    Federator.perform(:publish_one, String.to_atom(module_name), params)
+  end
+end
diff --git a/lib/pleroma/workers/receiver_worker.ex b/lib/pleroma/workers/receiver_worker.ex
new file mode 100644
index 000000000..83d528a66
--- /dev/null
+++ b/lib/pleroma/workers/receiver_worker.ex
@@ -0,0 +1,18 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.ReceiverWorker do
+  alias Pleroma.Web.Federator
+
+  use Pleroma.Workers.WorkerHelper, queue: "federator_incoming"
+
+  @impl Oban.Worker
+  def perform(%{"op" => "incoming_doc", "body" => doc}, _job) do
+    Federator.perform(:incoming_doc, doc)
+  end
+
+  def perform(%{"op" => "incoming_ap_doc", "params" => params}, _job) do
+    Federator.perform(:incoming_ap_doc, params)
+  end
+end
diff --git a/lib/pleroma/workers/scheduled_activity_worker.ex b/lib/pleroma/workers/scheduled_activity_worker.ex
new file mode 100644
index 000000000..ca7d53af1
--- /dev/null
+++ b/lib/pleroma/workers/scheduled_activity_worker.ex
@@ -0,0 +1,12 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.ScheduledActivityWorker do
+  use Pleroma.Workers.WorkerHelper, queue: "scheduled_activities"
+
+  @impl Oban.Worker
+  def perform(%{"op" => "execute", "activity_id" => activity_id}, _job) do
+    Pleroma.Daemons.ScheduledActivityDaemon.perform(:execute, activity_id)
+  end
+end
diff --git a/lib/pleroma/workers/subscriber_worker.ex b/lib/pleroma/workers/subscriber_worker.ex
new file mode 100644
index 000000000..fc490e300
--- /dev/null
+++ b/lib/pleroma/workers/subscriber_worker.ex
@@ -0,0 +1,26 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.SubscriberWorker do
+  alias Pleroma.Repo
+  alias Pleroma.Web.Federator
+  alias Pleroma.Web.Websub
+
+  use Pleroma.Workers.WorkerHelper, queue: "federator_outgoing"
+
+  @impl Oban.Worker
+  def perform(%{"op" => "refresh_subscriptions"}, _job) do
+    Federator.perform(:refresh_subscriptions)
+  end
+
+  def perform(%{"op" => "request_subscription", "websub_id" => websub_id}, _job) do
+    websub = Repo.get(Websub.WebsubClientSubscription, websub_id)
+    Federator.perform(:request_subscription, websub)
+  end
+
+  def perform(%{"op" => "verify_websub", "websub_id" => websub_id}, _job) do
+    websub = Repo.get(Websub.WebsubServerSubscription, websub_id)
+    Federator.perform(:verify_websub, websub)
+  end
+end
diff --git a/lib/pleroma/workers/transmogrifier_worker.ex b/lib/pleroma/workers/transmogrifier_worker.ex
new file mode 100644
index 000000000..b581a2f86
--- /dev/null
+++ b/lib/pleroma/workers/transmogrifier_worker.ex
@@ -0,0 +1,15 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.TransmogrifierWorker do
+  alias Pleroma.User
+
+  use Pleroma.Workers.WorkerHelper, queue: "transmogrifier"
+
+  @impl Oban.Worker
+  def perform(%{"op" => "user_upgrade", "user_id" => user_id}, _job) do
+    user = User.get_cached_by_id(user_id)
+    Pleroma.Web.ActivityPub.Transmogrifier.perform(:user_upgrade, user)
+  end
+end
diff --git a/lib/pleroma/workers/web_pusher_worker.ex b/lib/pleroma/workers/web_pusher_worker.ex
new file mode 100644
index 000000000..61b451e3e
--- /dev/null
+++ b/lib/pleroma/workers/web_pusher_worker.ex
@@ -0,0 +1,20 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.WebPusherWorker do
+  alias Pleroma.Notification
+  alias Pleroma.Repo
+
+  use Pleroma.Workers.WorkerHelper, queue: "web_push"
+
+  @impl Oban.Worker
+  def perform(%{"op" => "web_push", "notification_id" => notification_id}, _job) do
+    notification =
+      Notification
+      |> Repo.get(notification_id)
+      |> Repo.preload([:activity])
+
+    Pleroma.Web.Push.Impl.perform(notification)
+  end
+end
diff --git a/lib/pleroma/workers/worker_helper.ex b/lib/pleroma/workers/worker_helper.ex
new file mode 100644
index 000000000..358efa14a
--- /dev/null
+++ b/lib/pleroma/workers/worker_helper.ex
@@ -0,0 +1,46 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.WorkerHelper do
+  alias Pleroma.Config
+  alias Pleroma.Workers.WorkerHelper
+
+  def worker_args(queue) do
+    case Config.get([:workers, :retries, queue]) do
+      nil -> []
+      max_attempts -> [max_attempts: max_attempts]
+    end
+  end
+
+  def sidekiq_backoff(attempt, pow \\ 4, base_backoff \\ 15) do
+    backoff =
+      :math.pow(attempt, pow) +
+        base_backoff +
+        :rand.uniform(2 * base_backoff) * attempt
+
+    trunc(backoff)
+  end
+
+  defmacro __using__(opts) do
+    caller_module = __CALLER__.module
+    queue = Keyword.fetch!(opts, :queue)
+
+    quote do
+      # Note: `max_attempts` is intended to be overridden in `new/2` call
+      use Oban.Worker,
+        queue: unquote(queue),
+        max_attempts: 1
+
+      def enqueue(op, params, worker_args \\ []) do
+        params = Map.merge(%{"op" => op}, params)
+        queue_atom = String.to_atom(unquote(queue))
+        worker_args = worker_args ++ WorkerHelper.worker_args(queue_atom)
+
+        unquote(caller_module)
+        |> apply(:new, [params, worker_args])
+        |> Pleroma.Repo.insert()
+      end
+    end
+  end
+end