Add like system for post

diskuy_back/lib/diskuy/likes.ex

@@ -37,7 +37,7 @@ defmodule Diskuy.Likes do
   """
   def get_thread_like!(id), do: Repo.get!(ThreadLike, id)
 
-  def get_thread_like_by_refer!(user_id, thread_id), do: Repo.get_by!(ThreadLike, [user_id: user_id, thread_id: thread_id])
+  def get_post_like_by_refer!(user_id, thread_id), do: Repo.get_by!(ThreadLike, [user_id: user_id, thread_id: thread_id])
 
   @doc """
   Creates a thread_like.
@@ -135,6 +135,8 @@ defmodule Diskuy.Likes do
   """
   def get_post_like!(id), do: Repo.get!(PostLike, id)
 
+  def get_thread_like_by_refer!(user_id, post_id), do: Repo.get_by!(PostLike, [user_id: user_id, post_id: post_id])
+
   @doc """
   Creates a post_like.
 

diskuy_back/lib/diskuy_web/controllers/post_controller.ex

@@ -3,6 +3,8 @@ defmodule DiskuyWeb.PostController do
 
   alias Diskuy.Forum
   alias Diskuy.Forum.Post
+  alias Diskuy.Likes
+  alias Diskuy.Likes.PostLike
 
   action_fallback DiskuyWeb.FallbackController
 
@@ -42,6 +44,28 @@ defmodule DiskuyWeb.PostController do
     end
   end
 
+  def add_like(conn, %{"id" => id}) do
+    current_user = Guardian.Plug.current_resource(conn)
+    post = Forum.get_post!(id)
+
+    with {:ok, %PostLike{}} <- Likes.create_post_like(%{"user_id" => current_user.id,
+                                                        "post_id" => id}),
+         {:ok, %Post{} = post} <- Forum.update_post(post, %{"points" => (post.points+1)}) do
+         render(conn, "show.json", post: post)
+    end
+  end
+
+  def delete_like(conn, %{"id" => id}) do
+    current_user = Guardian.Plug.current_resource(conn)
+    post = Forum.get_post!(id)
+    post_like = Likes.get_post_like_by_refer!(current_user.id, id)
+
+    with {:ok, %PostLike{}} <- Likes.delete_post_like(post_like),
+         {:ok, %Post{}} <- Forum.update_post(post, %{"points" => (post.points-1)}) do
+         render(conn, "show.json", post: post)
+    end
+  end
+
   defp put_user_id(conn, %{"post" => post_params}) do
     current_user = Guardian.Plug.current_resource(conn)
     new_params = Map.put(post_params, "user_id", current_user.id)

diskuy_back/lib/diskuy_web/controllers/post_like_controller.ex

@@ -40,4 +40,11 @@ defmodule DiskuyWeb.PostLikeController do
       send_resp(conn, :no_content, "")
     end
   end
+
+  def check_like(conn, %{"id" => id}) do
+    current_user = Guardian.Plug.current_resource(conn)
+    post_like = Likes.get_post_like_by_refer!(current_user.id, id)
+    render(conn, "show.json", post_like: post_like)
+  end
+
 end

diskuy_back/lib/diskuy_web/router.ex

@@ -22,6 +22,14 @@ defmodule DiskuyWeb.Router do
     options "/threads/dislike/:id", ThreadController, :options
     get "/threads/checklike/:id", ThreadLikeController, :check_like
     options "/threads/checklike/:id", ThreadLikeController, :options
+
+    post "/post/like/:id", PostController, :add_like
+    options "/post/like/:id", PostController, :options
+    post "/post/dislike/:id", PostController, :delete_like
+    options "/post/dislike/:id", PostController, :options
+    get "/post/checklike/:id", PostLikeController, :check_like
+    options "/post/checklike/:id", PostLikeController, :options
+
   end
 
   scope "/api", DiskuyWeb do