Implement client leave endpoint

Add documentation and type specs

lib/matrix_server_web/client/controllers/room_controller.ex

@@ -112,4 +112,29 @@ defmodule MatrixServerWeb.Client.RoomController do
   end
 
   def join(conn, _), do: put_error(conn, :missing_param)
+
+  @doc """
+  This API stops a user participating in a particular room.
+
+  Action for POST /_matrix/client/r0/rooms/{roomId}/leave.
+  """
+  def leave(%Conn{assigns: %{account: account}} = conn, %{"room_id" => room_id}) do
+    case RoomServer.get_room_server(room_id) do
+      {:ok, pid} ->
+        case RoomServer.leave(pid, account) do
+          :ok ->
+            conn
+            |> send_resp(200, [])
+            |> halt()
+
+          {:error, _} ->
+            put_error(conn, :unknown)
+        end
+
+      {:error, :not_found} ->
+        put_error(conn, :not_found, "The given room was not found.")
+    end
+  end
+
+  def leave(conn, _), do: put_error(conn, :missing_param)
 end

lib/matrix_server_web/client/request/login.ex

@@ -3,6 +3,13 @@ defmodule MatrixServerWeb.Client.Request.Login do
 
   import Ecto.Changeset
 
+  @type t :: %__MODULE__{
+          type: String.t(),
+          password: String.t(),
+          device_id: String.t(),
+          initial_device_display_name: String.t()
+        }
+
   @primary_key false
   embedded_schema do
     field :type, :string

lib/matrix_server_web/client/request/register.ex

@@ -5,6 +5,14 @@ defmodule MatrixServerWeb.Client.Request.Register do
 
   alias Ecto.Changeset
 
+  @type t :: %__MODULE__{
+          device_id: String.t(),
+          initial_device_display_name: String.t(),
+          password: String.t(),
+          username: String.t(),
+          inhibit_login: boolean()
+        }
+
   @primary_key false
   embedded_schema do
     field :device_id, :string