From 34da9da261f254a3c71809accf22f3b97f68307d Mon Sep 17 00:00:00 2001
From: Pim Kunis <pim@kunis.nl>
Date: Mon, 6 Sep 2021 20:33:23 +0200
Subject: [PATCH] Implement client capabilities endpoint

---
 .../client/controllers/info_controller.ex     | 21 +++++++++++++++++++
 lib/architex_web/router.ex                    |  1 +
 2 files changed, 22 insertions(+)

diff --git a/lib/architex_web/client/controllers/info_controller.ex b/lib/architex_web/client/controllers/info_controller.ex
index c90743d..c049db3 100644
--- a/lib/architex_web/client/controllers/info_controller.ex
+++ b/lib/architex_web/client/controllers/info_controller.ex
@@ -21,4 +21,25 @@ defmodule ArchitexWeb.Client.InfoController do
   def unrecognized(conn, _params) do
     put_error(conn, :unrecognized)
   end
+
+  @doc """
+  Gets information about the server's supported feature set and other relevant capabilities.
+
+  Action for GET /_matrix/client/r0/capabilities.
+  """
+  def capabilities(conn, _params) do
+    data = %{
+      capabilities: %{
+        "m.change_password": %{enabled: false},
+        "m.room_versions": %{
+          default: "5",
+          available: %{"5": "stable"}
+        }
+      }
+    }
+
+    conn
+    |> put_status(200)
+    |> json(data)
+  end
 end
diff --git a/lib/architex_web/router.ex b/lib/architex_web/router.ex
index b0f3f82..015d0f2 100644
--- a/lib/architex_web/router.ex
+++ b/lib/architex_web/router.ex
@@ -53,6 +53,7 @@ defmodule ArchitexWeb.Router do
       post "/logout/all", AccountController, :logout_all
       post "/createRoom", RoomController, :create
       get "/joined_rooms", RoomController, :joined_rooms
+      get "/capabilities", InfoController, :capabilities
 
       scope "/directory" do
         put "/room/:alias", AliasesController, :create