From 691d1208b5abd5bfb6ff0c1c75a8f315ee0e4500 Mon Sep 17 00:00:00 2001
From: eugenijm <eugenijm@protonmail.com>
Date: Tue, 26 Mar 2019 21:42:03 +0300
Subject: [PATCH] Add GET /api/v1/apps/verify_credentials

---
 .../web/mastodon_api/mastodon_api_controller.ex    |  9 ++++++++
 lib/pleroma/web/mastodon_api/views/app_view.ex     | 27 ++++++++++++++++++++++
 lib/pleroma/web/router.ex                          |  1 +
 .../mastodon_api/mastodon_api_controller_test.exs  | 20 ++++++++++++++++
 4 files changed, 57 insertions(+)
 create mode 100644 lib/pleroma/web/mastodon_api/views/app_view.ex

diff --git a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
index 6b7c67012..295c8bebe 100644
--- a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
+++ b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
@@ -18,6 +18,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   alias Pleroma.Web.ActivityPub.Visibility
   alias Pleroma.Web.CommonAPI
   alias Pleroma.Web.MastodonAPI.AccountView
+  alias Pleroma.Web.MastodonAPI.AppView
   alias Pleroma.Web.MastodonAPI.FilterView
   alias Pleroma.Web.MastodonAPI.ListView
   alias Pleroma.Web.MastodonAPI.MastodonAPI
@@ -132,6 +133,14 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
     json(conn, account)
   end
 
+  def verify_app_credentials(%{assigns: %{user: _user, token: token}} = conn, _) do
+    with %Token{app: %App{} = app} <- Repo.preload(token, :app) do
+      conn
+      |> put_view(AppView)
+      |> render("show.json", %{app: app})
+    end
+  end
+
   def user(%{assigns: %{user: for_user}} = conn, %{"id" => nickname_or_id}) do
     with %User{} = user <- User.get_cached_by_nickname_or_id(nickname_or_id),
          true <- User.auth_active?(user) || user.id == for_user.id || User.superuser?(for_user) do
diff --git a/lib/pleroma/web/mastodon_api/views/app_view.ex b/lib/pleroma/web/mastodon_api/views/app_view.ex
new file mode 100644
index 000000000..1976d4dcb
--- /dev/null
+++ b/lib/pleroma/web/mastodon_api/views/app_view.ex
@@ -0,0 +1,27 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.MastodonAPI.AppView do
+  use Pleroma.Web, :view
+
+  alias Pleroma.Web.OAuth.App
+
+  def render("show.json", %{app: %App{website: webiste, client_name: name}}) do
+    result = %{
+      name: name,
+      website: webiste
+    }
+
+    vapid_key = Pleroma.Web.Push.vapid_config() |> Keyword.get(:public_key)
+
+    result =
+      if vapid_key do
+        Map.put(result, "vapid_key", vapid_key)
+      else
+        result
+      end
+
+    result
+  end
+end
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index befd382ba..32e5f7644 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -328,6 +328,7 @@ defmodule Pleroma.Web.Router do
     get("/instance", MastodonAPIController, :masto_instance)
     get("/instance/peers", MastodonAPIController, :peers)
     post("/apps", MastodonAPIController, :create_app)
+    get("/apps/verify_credentials", MastodonAPIController, :verify_app_credentials)
     get("/custom_emojis", MastodonAPIController, :custom_emojis)
 
     get("/statuses/:id/card", MastodonAPIController, :status_card)
diff --git a/test/web/mastodon_api/mastodon_api_controller_test.exs b/test/web/mastodon_api/mastodon_api_controller_test.exs
index 21e88eda9..9c0fdf368 100644
--- a/test/web/mastodon_api/mastodon_api_controller_test.exs
+++ b/test/web/mastodon_api/mastodon_api_controller_test.exs
@@ -332,6 +332,26 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIControllerTest do
     assert id == to_string(user.id)
   end
 
+  test "apps/verify_credentials", %{conn: conn} do
+    token = insert(:oauth_token)
+
+    conn =
+      conn
+      |> assign(:user, token.user)
+      |> assign(:token, token)
+      |> get("/api/v1/apps/verify_credentials")
+
+    app = Repo.preload(token, :app).app
+
+    expected = %{
+      "name" => app.client_name,
+      "website" => app.website,
+      "vapid_key" => Pleroma.Web.Push.vapid_config() |> Keyword.get(:public_key)
+    }
+
+    assert expected == json_response(conn, 200)
+  end
+
   test "get a status", %{conn: conn} do
     activity = insert(:note_activity)