Extract service from comments controller

closes #6307

1 files changed, 43 insertions, 0 deletions

diff --git a/app/services/comment_service.rb b/app/services/comment_service.rb
new file mode 100644
index 000000000..a571db375
--- /dev/null
+++ b/app/services/comment_service.rb
@@ -0,0 +1,43 @@
+class CommentService
+  attr_reader :post, :comments
+
+  def initialize(params)
+    @user = params[:user]
+    @post_id = params[:post_id]
+    @comment_id = params[:comment_id]
+    @text = params[:text]
+
+    @post = find_post! if @post_id
+    @comments = @post.comments.for_a_stream if @post
+  end
+
+  def create_comment
+    @user.comment!(post, @text) if @post
+  end
+
+  def destroy_comment
+    @comment = Comment.find(@comment_id)
+    if @user.owns?(@comment) || @user.owns?(@comment.parent)
+      @user.retract(@comment)
+      true
+    else
+      false
+    end
+  end
+
+  private
+
+  def find_post!
+    find_post.tap do |post|
+      raise(ActiveRecord::RecordNotFound) unless post
+    end
+  end
+
+  def find_post
+    if @user
+      @user.find_visible_shareable_by_id(Post, @post_id)
+    else
+      Post.find_by_id_and_public(@post_id, true)
+    end
+  end
+end