Merge branch 'cache-follow-state' into 'develop'

Cache follow state

Closes #1180

See merge request pleroma/pleroma!1573

1 files changed, 22 insertions, 0 deletions

diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
index b67743846..a1040fe71 100644
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@@ -132,6 +132,28 @@ defmodule Pleroma.User do
     |> Map.put(:follower_count, follower_count)
   end
 
+  def follow_state(%User{} = user, %User{} = target) do
+    follow_activity = Utils.fetch_latest_follow(user, target)
+
+    if follow_activity,
+      do: follow_activity.data["state"],
+      # Ideally this would be nil, but then Cachex does not commit the value
+      else: false
+  end
+
+  def get_cached_follow_state(user, target) do
+    key = "follow_state:#{user.ap_id}|#{target.ap_id}"
+    Cachex.fetch!(:user_cache, key, fn _ -> {:commit, follow_state(user, target)} end)
+  end
+
+  def set_follow_state_cache(user_ap_id, target_ap_id, state) do
+    Cachex.put(
+      :user_cache,
+      "follow_state:#{user_ap_id}|#{target_ap_id}",
+      state
+    )
+  end
+
   def set_info_cache(user, args) do
     Cachex.put(:user_cache, "user_info:#{user.id}", user_info(user, args))
   end