class CommentsController < ApplicationController
  before_action :build_comment, only: :create
  load_and_authorize_resource
  respond_to :html, :js

  def create
    @comment.save!
    @comment.move_to_child_of(parent) if reply?

    Mailer.comment(@comment).deliver_now if email_on_debate_comment?
    Mailer.reply(@comment).deliver_now if email_on_comment_reply?

    respond_with @comment
  end

  def vote
    @comment.vote_by(voter: current_user, vote: params[:value])
    respond_with @comment
  end

  private
    def comment_params
      params.require(:comments).permit(:commentable_type, :commentable_id, :body)
    end

    def build_comment
      @comment = Comment.build(debate, current_user, params[:comment][:body])
    end

    def debate
      @debate ||= Debate.find(params[:debate_id])
    end

    def parent
      @parent ||= Comment.find_parent(params[:comment])
    end

    def reply?
      parent.class == Comment
    end

    def email_on_debate_comment?
      @comment.debate.author.email_on_debate_comment?
    end

    def email_on_comment_reply?
      reply? && parent.author.email_on_comment_reply?
    end
end