Change follow_operation schema to use type BooleanLike (#301)

[akkoma] / lib / pleroma / config.ex

diff --git a/lib/pleroma/config.ex b/lib/pleroma/config.ex
index 510d8d498b5bdae5843eb3e358b9e6e095c3424f..54e332595d73762f155ce5c438ea8bfd494184c0 100644 (file)
--- a/lib/pleroma/config.ex
+++ b/lib/pleroma/config.ex
@@ -1,15 +1,106 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Config do
-  use Agent
+  @behaviour Pleroma.Config.Getting
+  defmodule Error do
+    defexception [:message]
+  end
+
+  @impl true
+  def get(key), do: get(key, nil)
+
+  @impl true
+  def get([key], default), do: get(key, default)
 
-  def start_link(initial) do
-    Agent.start_link(fn -> initial end, name: __MODULE__)
+  @impl true
+  def get([_ | _] = path, default) do
+    case fetch(path) do
+      {:ok, value} -> value
+      :error -> default
+    end
   end
 
-  def get(path) do
-    Agent.get(__MODULE__, Kernel, :get_in, [path])
+  @impl true
+  def get(key, default) do
+    Application.get_env(:pleroma, key, default)
   end
 
-  def put(path, value) do
-    Agent.update(__MODULE__, Kernel, :put_in, [path, value])
+  def get!(key) do
+    value = get(key, nil)
+
+    if value == nil do
+      raise(Error, message: "Missing configuration value: #{inspect(key)}")
+    else
+      value
+    end
+  end
+
+  def fetch(key) when is_atom(key), do: fetch([key])
+
+  def fetch([root_key | keys]) do
+    Enum.reduce_while(keys, Application.fetch_env(:pleroma, root_key), fn
+      key, {:ok, config} when is_map(config) or is_list(config) ->
+        case Access.fetch(config, key) do
+          :error ->
+            {:halt, :error}
+
+          value ->
+            {:cont, value}
+        end
+
+      _key, _config ->
+        {:halt, :error}
+    end)
+  end
+
+  def put([key], value), do: put(key, value)
+
+  def put([parent_key | keys], value) do
+    parent =
+      Application.get_env(:pleroma, parent_key, [])
+      |> put_in(keys, value)
+
+    Application.put_env(:pleroma, parent_key, parent)
+  end
+
+  def put(key, value) do
+    Application.put_env(:pleroma, key, value)
+  end
+
+  def delete([key]), do: delete(key)
+
+  def delete([parent_key | keys] = path) do
+    with {:ok, _} <- fetch(path) do
+      {_, parent} =
+        parent_key
+        |> get()
+        |> get_and_update_in(keys, fn _ -> :pop end)
+
+      Application.put_env(:pleroma, parent_key, parent)
+    end
+  end
+
+  def delete(key) do
+    Application.delete_env(:pleroma, key)
+  end
+
+  def restrict_unauthenticated_access?(resource, kind) do
+    setting = get([:restrict_unauthenticated, resource, kind])
+
+    if setting in [nil, :if_instance_is_private] do
+      !get!([:instance, :public])
+    else
+      setting
+    end
+  end
+
+  def oauth_consumer_strategies, do: get([:auth, :oauth_consumer_strategies], [])
+
+  def oauth_consumer_enabled?, do: oauth_consumer_strategies() != []
+
+  def feature_enabled?(feature_name) do
+    get([:features, feature_name]) not in [nil, false, :disabled, :auto]
   end
 end