Feat/topic process (#22)

* add topic update endpoint

* add topic delete endpoint

apps/core/lib/core/schema/topic.ex

@@ -27,8 +27,23 @@ defmodule GoEscuelaLms.Core.Schema.Topic do
     |> Repo.insert()
   end
 
-  def changeset(course, attrs) do
-    course
+  def find(uuid) do
+    Repo.get(Topic, uuid)
+    |> Repo.preload(:activities)
+  end
+
+  def update(%Topic{} = topic, attrs) do
+    topic
+    |> changeset(attrs)
+    |> Repo.update()
+  end
+
+  def delete(%Topic{} = topic) do
+    topic |> Repo.delete()
+  end
+
+  def changeset(topic, attrs) do
+    topic
     |> cast(attrs, [:name, :course_id])
     |> validate_required([:name, :course_id])
   end

apps/web/lib/web/controllers/topics/topics_controller.ex

@@ -11,6 +11,7 @@ defmodule Web.Topics.TopicsController do
   plug :is_permit_authorized when action in [:create]
   plug :load_course when action in [:create]
   plug :check_enrollment when action in [:create]
+  plug :load_topic when action in [:update, :delete]
 
   @create_params %{
     name: [type: :string, required: true]
@@ -25,10 +26,35 @@ defmodule Web.Topics.TopicsController do
     end
   end
 
+  def update(conn, params) do
+    topic = conn.assigns.topic
+
+    with {:ok, valid_params} <- Tarams.cast(params, @create_params),
+         {:ok, topic_updated} <- update_topic(topic, valid_params) do
+      render(conn, :update, %{topic: topic_updated})
+    end
+  end
+
+  def delete(conn, _params) do
+    topic = conn.assigns.topic
+
+    case topic |> Topic.delete() do
+      {:ok, topic} ->
+        render(conn, :delete, %{topic: topic})
+    end
+  end
+
   defp create_topic(course, params) do
     Topic.create(%{
       name: params |> get_in([:name]),
       course_id: course.uuid
     })
   end
+
+  defp update_topic(topic, params) do
+    topic
+    |> Topic.update(%{
+      name: params |> get_in([:name])
+    })
+  end
 end

apps/web/lib/web/controllers/topics/topics_json.ex

@@ -3,7 +3,21 @@ defmodule Web.Topics.TopicsJSON do
   Renders topic
   """
 
+  alias GoEscuelaLms.Core.Schema.Topic
+
   def create(%{topic: topic}) do
-    %{data: %{name: topic.name}}
+    %{data: data(topic)}
+  end
+
+  def update(%{topic: topic}) do
+    %{data: data(topic)}
+  end
+
+  def delete(%{topic: topic}) do
+    %{message: "topic deleted", data: data(topic)}
+  end
+
+  defp data(%Topic{} = topic) do
+    %{name: topic.name}
   end
 end

apps/web/lib/web/plug/check_request.ex

@@ -3,7 +3,7 @@ defmodule Web.Plug.CheckRequest do
   This module plug check request and load resource
   """
   import Plug.Conn
-  alias GoEscuelaLms.Core.Schema.{Course, User}
+  alias GoEscuelaLms.Core.Schema.{Course, Topic, User}
 
   def load_course(conn, _) do
     course_id = conn.params["id"] || conn.params["courses_id"]
@@ -18,6 +18,19 @@ defmodule Web.Plug.CheckRequest do
     end
   end
 
+  def load_topic(conn, _) do
+    id = conn.params["id"]
+
+    with :ok <- valid_uuids(id),
+         object <- Topic.find(id),
+         false <- is_nil(object) do
+      assign(conn, :topic, object)
+    else
+      _ ->
+        Web.FallbackController.call(conn, {:error, "invalid params"}) |> halt()
+    end
+  end
+
   def load_user(conn, _) do
     id = conn.params["id"] || conn.params["users_id"]
 

apps/web/lib/web/router.ex

@@ -32,7 +32,7 @@ defmodule Web.Router do
     end
 
     resources "/courses", Courses.CoursesController, only: [:create, :update, :index] do
-      resources "/topics", Topics.TopicsController, only: [:create]
+      resources "/topics", Topics.TopicsController, only: [:create, :update, :delete]
     end
 
     get "/profile", Users.ProfileController, :show