puzzle-scoreboard/app/controllers/contests_controller.rb

class ContestsController < ApplicationController
  before_action :set_contest, only: %i[ destroy edit show update ]
  before_action :offline_setup, only: %i[ offline_new offline_create ]
  skip_before_action :require_authentication, only: %i[ scoreboard offline_new offline_create ]

  def index
    authorize :contest

    @contests = current_user.contests
    @title = I18n.t("contests.index.title", username: current_user.username)
  end

  def show
    authorize @contest

    @title = I18n.t("contests.show.title", name: @contest.name)
    @action_name = t("helpers.buttons.edit")
    @action_path = edit_contest_path(@contest)
    @contestants = @contest.contestants.sort_by { |contestant| [
      -contestant.completions.where(remaining_pieces: nil).size,
      (contestant.completions.where(remaining_pieces: nil).size == @contest.puzzles.length ? 1 : 0) * contestant.time_seconds,
      contestant.completions.size > 0 && contestant.completions[-1].remaining_pieces ? contestant.completions[-1].remaining_pieces : 1000000,
      contestant.time_seconds
    ] }
    filter_contestants_per_category
    @puzzles = @contest.puzzles.order(:id)
    @messages = @contest.messages.order(:time_seconds)
    set_badges
  end

  def edit
    authorize @contest

    @action_name = t("helpers.buttons.back")
    @action_path = contest_path(@contest)
  end

  def new
    authorize :contest

    @contest = Contest.new
  end

  def create
    authorize :contest

    @contest = Contest.new(contest_params)
    @contest.user_id = current_user.id
    if @contest.save
      redirect_to @contest, notice: t("contests.new.notice")
    else
      render :new, status: :unprocessable_entity
    end
  end

  def update
    authorize @contest

    if @contest.update(contest_params)
      redirect_to @contest, notice: t("contests.edit.notice")
    else
      @action_name = t("helpers.buttons.back")
      @action_path = contest_path(@contest)
      render :edit, status: :unprocessable_entity
    end
  end

  def destroy
    authorize @contest

    @contest.destroy
    redirect_to contests_path, notice: t("contests.destroy.notice")
  end

  def scoreboard
    @contest = Contest.find_by(slug: params[:id])
    unless @contest && @contest.public
      skip_authorization
      not_found and return
    end
    authorize @contest

    I18n.locale = @contest.lang

    @title = I18n.t("contests.scoreboard.title", name: @contest.name)
    @contestants = @contest.contestants.sort_by { |contestant| [
      -contestant.completions.where(remaining_pieces: nil).size,
      (contestant.completions.where(remaining_pieces: nil).size == @contest.puzzles.length ? 1 : 0) * contestant.time_seconds,
      contestant.completions.size > 0 && contestant.completions[-1].remaining_pieces ? contestant.completions[-1].remaining_pieces : 1000000,
      contestant.time_seconds
    ] }
    filter_contestants_per_category
    @puzzles = @contest.puzzles.order(:id)
    @action_name = t("helpers.buttons.refresh")
    if params.key?(:category)
      @action_path = "/public/#{@contest.friendly_id}?category=#{params[:category]}"
    else
      @action_path = "/public/#{@contest.friendly_id}"
    end
    render :scoreboard
  end

  def offline_new
    authorize @contest
    @offline = Offline.new
  end

  def offline_create
    authorize @contest
    @offline = Offline.new(offline_start_params)
    @offline.contest = @contest
    @offline.start_time = Time.now()
    if @offline.save
      redirect_to "/public/#{@contest.friendly_id}/offline/test"
    else
      render :offline_new, status: :unprocessable_entity
    end
  end

  private

  def offline_setup
    @contest = Contest.find_by(slug: params[:id])
    I18n.locale = @contest.lang
    @title = I18n.t("contests.scoreboard.title", name: @contest.name)
  end

  def set_badges
    @badges = []
    @badges.push(t("helpers.badges.team")) if @contest.team
    @badges.push(t("helpers.badges.registration")) if @contest.allow_registration
  end

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

  def contest_params
    params.expect(contest: [ :lang, :name, :offline_form, :public, :team, :allow_registration ])
  end

  def filter_contestants_per_category
    if params.key?(:category) && params[:category] != "-1"
      if params[:category] == "-2"
        @contestants = @contestants.select { |contestant| contestant.categories.size == 0 }
      else
        @contestants = @contestants.select { |contestant| contestant.categories.where(id: params[:category]).any? }
      end
    end
  end

  def offline_start_params
    params.expect(offline: [ :name, :start_image ])
  end
end