add API routes for comment likes

Author: jhass

app/controllers/api/v1/likes_controller.rb

@@ -23,7 +23,10 @@ def show
         post = post_service.find!(params.require(:post_id))
         raise ActiveRecord::RecordInvalid unless post.public? || private_read?
 
-        likes_query = like_service.find_for_post(params[:post_id])
+        likes_query = find_likes
+
+        return unless likes_query
+
         likes_page = index_pager(likes_query).response
         likes_page[:data] = likes_page[:data].map {|x| like_json(x) }
         render_paged_api_response likes_page
@@ -33,31 +36,42 @@ def create
         post = post_service.find!(params.require(:post_id))
         raise ActiveRecord::RecordInvalid unless post.public? || private_read?
 
-        like_service.create_for_post(params[:post_id])
+        if params[:comment_id].present?
+          create_for_comment
+        else
+          create_for_post
+        end
       rescue ActiveRecord::RecordInvalid => e
         if e.message == "Validation failed: Target has already been taken"
           return render_error 409, "Like already exists"
         end
 
         raise
-      else
-        head :no_content
       end
 
       def destroy
         post = post_service.find!(params.require(:post_id))
         raise ActiveRecord::RecordInvalid unless post.public? || private_read?
 
-        success = like_service.unlike_post(params[:post_id])
-        if success
-          head :no_content
+        if params[:comment_id].present?
+          destroy_for_comment
         else
-          render_error 410, "Like doesn’t exist"
+          destroy_for_post
         end
       end
 
       private
 
+      def find_likes
+        if params[:comment_id].present?
+          return unless comment_and_post_validate(params[:post_id], params[:comment_id])
+
+          like_service.find_for_comment(params[:comment_id])
+        else
+          like_service.find_for_post(params[:post_id])
+        end
+      end
+
       def like_service
         @like_service ||= LikeService.new(current_user)
       end
@@ -66,9 +80,67 @@ def post_service
         @post_service ||= PostService.new(current_user)
       end
 
+      def comment_service
+        @comment_service ||= CommentService.new(current_user)
+      end
+
       def like_json(like)
         LikesPresenter.new(like).as_api_json
       end
+
+      def create_for_post
+        like_service.create_for_post(params[:post_id])
+
+        head :no_content
+      end
+
+      def create_for_comment
+        return unless comment_and_post_validate(params[:post_id], params[:comment_id])
+
+        like_service.create_for_comment(params[:comment_id])
+
+        head :no_content
+      end
+
+      def destroy_for_post
+        if like_service.unlike_post(params[:post_id])
+          head :no_content
+        else
+          render_error 410, "Like doesn’t exist"
+        end
+      end
+
+      def destroy_for_comment
+        return unless comment_and_post_validate(params[:post_id], params[:comment_id])
+
+        if like_service.unlike_comment(params[:comment_id])
+          head :no_content
+        else
+          render_error 410, "Like doesn’t exist"
+        end
+      end
+
+      def comment_and_post_validate(post_guid, comment_guid)
+        if !comment_exists(comment_guid) || !comment_is_for_post(post_guid, comment_guid)
+          render_error 404, "Comment not found for the given post"
+          false
+        else
+          true
+        end
+      end
+
+      def comment_exists(comment_guid)
+        comment = comment_service.find!(comment_guid)
+        comment ? true : false
+      rescue ActiveRecord::RecordNotFound
+        false
+      end
+
+      def comment_is_for_post(post_guid, comment_guid)
+        comments = comment_service.find_for_post(post_guid)
+        comment = comments.find {|comment| comment[:guid] == comment_guid }
+        comment ? true : false
+      end
     end
   end
 end

config/routes.rb

@@ -231,7 +231,8 @@
     resources :photos, only: %i[show index create destroy]
     resources :posts, only: %i[show create destroy] do
       resources :comments, only: %i[create index destroy] do
-        post "report" => "comments#report"
+        resource :likes, only: %i[show create destroy]
+        post :report
       end
       resource :reshares, only: %i[show create]
       resource :likes, only: %i[show create destroy]

spec/integration/api/comments_controller_spec.rb

@@ -135,7 +135,7 @@
     end
   end
 
-  describe "#read" do
+  describe "#index" do
     before do
       @comment_text1 = "This is a comment"
       @comment_text2 = "This is a comment 2"