2 files changed, 97 insertions, 1 deletions
diff --git a/lib/mix/tasks/pleroma/instance.ex b/lib/mix/tasks/pleroma/instance.ex
index fc21ae062..1915aacd9 100644
--- a/lib/mix/tasks/pleroma/instance.ex
+++ b/lib/mix/tasks/pleroma/instance.ex
@@ -36,7 +36,9 @@ defmodule Mix.Tasks.Pleroma.Instance do
           listen_port: :string,
           strip_uploads: :string,
           anonymize_uploads: :string,
-          dedupe_uploads: :string
+          dedupe_uploads: :string,
+          skip_release_env: :boolean,
+          release_env_file: :string
         ],
         aliases: [
           o: :output,
@@ -241,6 +243,24 @@ defmodule Mix.Tasks.Pleroma.Instance do
 
       write_robots_txt(static_dir, indexable, template_dir)
 
+      if Keyword.get(options, :skip_release_env, false) do
+        shell_info("""
+        Release environment file is skip. Please generate the release env file before start.
+        `MIX_ENV=#{Mix.env()} mix pleroma.release_env gen`
+        """)
+      else
+        shell_info("Generation the environment file:")
+
+        release_env_args =
+          with path when not is_nil(path) <- Keyword.get(options, :release_env_file) do
+            ["gen", "--path", path]
+          else
+            _ -> ["gen"]
+          end
+
+        Mix.Tasks.Pleroma.ReleaseEnv.run(release_env_args)
+      end
+
       shell_info(
         "\n All files successfully written! Refer to the installation instructions for your platform for next steps."
       )
diff --git a/lib/mix/tasks/pleroma/release_env.ex b/lib/mix/tasks/pleroma/release_env.ex
new file mode 100644
index 000000000..9da74ffcf
--- /dev/null
+++ b/lib/mix/tasks/pleroma/release_env.ex
@@ -0,0 +1,76 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Mix.Tasks.Pleroma.ReleaseEnv do
+  use Mix.Task
+  import Mix.Pleroma
+
+  @shortdoc "Generate Pleroma environment file."
+  @moduledoc File.read!("docs/administration/CLI_tasks/release_environments.md")
+
+  def run(["gen" | rest]) do
+    {options, [], []} =
+      OptionParser.parse(
+        rest,
+        strict: [
+          force: :boolean,
+          path: :string
+        ],
+        aliases: [
+          p: :path,
+          f: :force
+        ]
+      )
+
+    file_path =
+      get_option(
+        options,
+        :path,
+        "Environment file path",
+        "./config/pleroma.env"
+      )
+
+    env_path = Path.expand(file_path)
+
+    proceed? =
+      if File.exists?(env_path) do
+        get_option(
+          options,
+          :force,
+          "Environment file already exists. Do you want to overwrite the #{env_path} file? (y/n)",
+          "n"
+        ) === "y"
+      else
+        true
+      end
+
+    if proceed? do
+      case do_generate(env_path) do
+        {:error, reason} ->
+          shell_error(
+            File.Error.message(%{action: "write to file", reason: reason, path: env_path})
+          )
+
+        _ ->
+          shell_info("\nThe file generated: #{env_path}.\n")
+
+          shell_info("""
+          WARNING: before start pleroma app please make sure to make the file read-only and non-modifiable.
+            Example:
+              chmod 0444 #{file_path}
+              chattr +i #{file_path}
+          """)
+      end
+    else
+      shell_info("\nThe file is exist. #{env_path}.\n")
+    end
+  end
+
+  def do_generate(path) do
+    content = "RELEASE_COOKIE=#{Base.encode32(:crypto.strong_rand_bytes(32))}"
+
+    File.mkdir_p!(Path.dirname(path))
+    File.write(path, content)
+  end
+end