Add endpoint for room creation

lib/matrix_server_web/api/create_room.ex

@@ -0,0 +1,28 @@
+defmodule MatrixServerWeb.API.CreateRoom do
+  use Ecto.Schema
+
+  import Ecto.Changeset
+
+  alias Ecto.Changeset
+
+  @primary_key false
+  embedded_schema do
+    field :visibility, :string
+    field :room_alias_name, :string
+    field :name, :string
+    field :topic, :string
+    field :invite, {:array, :string}
+    field :room_version, :string
+    # TODO: unimplemented:
+    # creation_content, initial_state, invite_3pid, initial_state, preset,
+    # is_direct, power_level_content_override
+  end
+
+  def changeset(params) do
+    %__MODULE__{}
+    |> cast(params, [:visibility, :room_alias_name, :name, :topic, :invite, :room_version])
+  end
+
+  def get_error(%Changeset{errors: [error | _]}), do: get_error(error)
+  def get_error(_), do: :bad_json
+end

lib/matrix_server_web/api/login.ex

@@ -4,6 +4,8 @@ defmodule MatrixServerWeb.API.Login do
 
   import Ecto.Changeset
 
+  # TODO: Maybe use inline embedded schema here
+  # https://hexdocs.pm/ecto/Ecto.Schema.html#embeds_one/3
   defmodule MatrixServerWeb.API.Login.Identifier do
     use Ecto.Schema
 
@@ -15,9 +17,9 @@ defmodule MatrixServerWeb.API.Login do
       field :user, :string
     end
 
-    def changeset(identifier, attrs) do
+    def changeset(identifier, params) do
       identifier
-      |> cast(attrs, [:type, :user])
+      |> cast(params, [:type, :user])
       |> validate_required([:type, :user])
     end
   end
@@ -33,9 +35,9 @@ defmodule MatrixServerWeb.API.Login do
     embeds_one :identifier, Identifier
   end
 
-  def changeset(attrs) do
+  def changeset(params) do
     %__MODULE__{}
-    |> cast(attrs, [:type, :password, :device_id, :initial_device_display_name])
+    |> cast(params, [:type, :password, :device_id, :initial_device_display_name])
     |> cast_embed(:identifier, with: &Identifier.changeset/2, required: true)
     |> validate_required([:type, :password])
   end

lib/matrix_server_web/api/register.ex

@@ -2,7 +2,6 @@ defmodule MatrixServerWeb.API.Register do
   use Ecto.Schema
 
   import Ecto.Changeset
-  import MatrixServerWeb.Plug.Error
 
   alias Ecto.Changeset
 
@@ -27,12 +26,8 @@ defmodule MatrixServerWeb.API.Register do
     |> validate_required([:password, :username])
   end
 
-  def handle_error(conn, cs) do
-    put_error(conn, get_register_error(cs))
-  end
-
-  defp get_register_error(%Changeset{errors: [error | _]}), do: get_register_error(error)
-  defp get_register_error({:localpart, {_, [{:constraint, :unique} | _]}}), do: :user_in_use
-  defp get_register_error({:localpart, {_, [{:validation, _} | _]}}), do: :invalid_username
-  defp get_register_error(_), do: :bad_json
+  def get_error(%Changeset{errors: [error | _]}), do: get_error(error)
+  def get_error({:localpart, {_, [{:constraint, :unique} | _]}}), do: :user_in_use
+  def get_error({:localpart, {_, [{:validation, _} | _]}}), do: :invalid_username
+  def get_error(_), do: :bad_json
 end