class MessagesController < ApplicationController
  include CompletionsConcern

  skip_before_action :verify_authenticity_token, only: %i[ create cors_preflight_check ]
  skip_before_action :require_authentication, only: %i[ create cors_preflight_check ]

  before_action :cors_set_access_control_headers, only: %i[ create cors_preflight_check ]
  before_action :set_contest, only: %i[ convert destroy ]
  before_action :set_data, only: %i[ convert ]

  def self.local_prefixes
    super + [ "completions" ]
  end

  def cors_set_access_control_headers
    response.set_header("Access-Control-Allow-Origin", "https://meet.google.com")
    response.set_header("Access-Control-Allow-Credentials", "true")
    response.set_header("Access-Control-Allow-Methods", "POST")
    response.set_header("Access-Control-Allow-Headers", "*")
    response.set_header("Access-Control-Max-Age", "86400")
  end

  def cors_preflight_check
    skip_authorization
  end

  def create
    skip_authorization

    begin
      @contest = Contest.find_by_token_for(:token, params[:token])
      @message = Message.new(text: params[:text], author: params[:author], time_seconds: params[:time_seconds],
          display_time: display_time(params[:time_seconds]), contest: @contest)
      if @contest && @message.save
        respond_to do |format|
          format.json  { render json: {}, status: 200 }
        end
      else
        respond_to do |format|
          format.json  { render json: { error: "invalid contest token" }, status: 400 }
        end
      end
    rescue
      respond_to do |format|
        format.json  { render json: { error: "invalid contest token" }, status: 400 }
      end
    end
  end

  def convert
    authorize @contest

    @message = Message.find(params[:message_id])
    @completion = Completion.new()
    @completion.display_time_from_start = @message.display_time

    render "completions/new"
  end

  def destroy
    authorize @contest

    @message = Message.find(params[:id])
    @message.destroy
    redirect_to contest_path(@contest)
  end

  private

  def set_contest
    @contest = Contest.find(params[:contest_id])
  end

  def set_data
    @contestants = @contest.contestants
    @puzzles = @contest.puzzles
  end
end