settings_controller.ex
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settings_controller.ex
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	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Web.PleromaAPI.SettingsController do
	use Pleroma.Web, :controller

	alias Pleroma.Web.Plugs.OAuthScopesPlug

	plug(Pleroma.Web.ApiSpec.CastAndValidate)

	plug(
	OAuthScopesPlug,
	%{scopes: ["write:accounts"]} when action in [:update]
	)

	plug(
	OAuthScopesPlug,
	%{scopes: ["read:accounts"]} when action in [:show]
	)

	defdelegate open_api_operation(action), to: Pleroma.Web.ApiSpec.PleromaSettingsOperation

	@doc "GET /api/v1/pleroma/settings/:app"
	def show(%{assigns: %{user: user}} = conn, %{app: app} = _params) do
	conn
	\|> json(get_settings(user, app))
	end

	@doc "PATCH /api/v1/pleroma/settings/:app"
	def update(%{assigns: %{user: user}, body_params: body_params} = conn, %{app: app} = _params) do
	settings =
	get_settings(user, app)
	\|> merge_recursively(body_params)

	with changeset <-
	Pleroma.User.update_changeset(
	user,
	%{pleroma_settings_store: %{app => settings}}
	),
	{:ok, _} <- Pleroma.Repo.update(changeset) do
	conn
	\|> json(settings)
	end
	end

	defp merge_recursively(old, %{} = new) do
	old = ensure_object(old)

	Enum.reduce(
	new,
	old,
	fn
	{k, nil}, acc ->
	Map.drop(acc, [k])

	{k, %{} = new_child}, acc ->
	Map.put(acc, k, merge_recursively(acc[k], new_child))

	{k, v}, acc ->
	Map.put(acc, k, v)
	end
	)
	end

	defp get_settings(user, app) do
	user.pleroma_settings_store
	\|> Map.get(app, %{})
	\|> ensure_object()
	end

	defp ensure_object(%{} = object) do
	object
	end

	defp ensure_object(_) do
	%{}
	end
	end