class ContestsController < ApplicationController
  include CompletionsConcern
  include ContestantsConcern

  before_action :set_contest, only: %i[ destroy show ]
  before_action :set_settings_contest, only: %i[ settings_general_edit settings_general_update settings_offline_edit settings_offline_update settings_categories_edit ]
  before_action :offline_setup, only: %i[ offline_new offline_create offline_edit offline_update offline_completed ]
  skip_before_action :require_authentication, only: %i[ scoreboard offline_new offline_create offline_edit offline_update offline_completed ]

  def index
    authorize :contest

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

  def show
    authorize @contest

    redirect_to contest_contestants_path(@contest)
  end

  def settings_general_edit
    authorize @contest
  end

  def settings_offline_edit
    authorize @contest
  end

  def settings_categories_edit
    authorize @contest
  end

  def settings_general_update
    authorize @contest

    if @contest.update(settings_general_params)
      redirect_to "/contests/#{@contest.id}/settings/general", notice: t("contests.edit.notice")
    else
      render :settings_general_edit, status: :unprocessable_entity
    end
  end

  def settings_offline_update
    authorize @contest

    if @contest.update(settings_offline_params)
      redirect_to "/contests/#{@contest.id}/settings/offline", notice: t("contests.edit.notice")
    else
      render :settings_offline_edit, status: :unprocessable_entity
    end
  end

  def new
    authorize :contest

    @contest = Contest.new
    @title = I18n.t("contests.new.title")
    @nonav = true
  end

  def create
    authorize :contest

    @contest = Contest.new(new_contest_params)
    @contest.lang = @current_user.lang
    @contest.ranking_mode = "actual"
    @contest.user_id = current_user.id
    if @contest.save
      redirect_to "/contests/#{@contest.id}/settings/general", notice: t("contests.new.notice")
    else
      @title = I18n.t("contests.new.title")
      @nonav = true
      render :new, 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 = ranked_contestants(@contest)
    filter_contestants_per_category
    if params.key?(:hide_offline) && params[:hide_offline] == "true"
      @contestants = @contestants.select { |contestant| !contestant.offline.present? }
    end
    @puzzles = @contest.puzzles.where(hidden: false).or(@contest.puzzles.where(hidden: nil)).order(:id)
    if params.key?(:hide_offline) && params.key?(:category)
      @action_path = "/public/#{@contest.friendly_id}?hide_offline=#{params[:hide_offline]}&category=#{params[:category]}"
    elsif params.key?(:category)
      @action_path = "/public/#{@contest.friendly_id}?category=#{params[:category]}"
    elsif params.key?(:hide_offline)
      @action_path = "/public/#{@contest.friendly_id}?hide_offline=#{params[:hide_offline]}"
    else
      @action_path = "/public/#{@contest.friendly_id}"
    end
    @space = " "
    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/#{@offline.generate_token_for(:token)}"
    else
      render :offline_new, status: :unprocessable_entity
    end
  end

  def offline_edit
    authorize @contest

    @offline = Offline.find_by_token_for(:token, params[:token])
    if !@offline
      not_found and return
    end

    if @offline.submitted
      render :offline_already_submitted and return
    end
  end

  def offline_update
    authorize @contest

    @offline = Offline.find_by_token_for(:token, params[:token])
    if !@offline
      not_found and return
    end

    @offline.submitted = true
    @offline.completed = params[:offline][:completed]
    @offline.end_time = Time.now()
    @offline.images.attach(params[:offline][:end_image])
    if @offline.completed
      @offline.missing_pieces = params[:offline][:missing_pieces]
    else
      @offline.remaining_pieces = params[:offline][:remaining_pieces]
    end
    if @offline.save
      if @contest.puzzles.length > 0
        dp = display_time(@offline.end_time.to_i - @offline.start_time.to_i)
        contestant = Contestant.create(contest: @contest, name: @offline.name, offline: @offline)
        Completion.create(contest: @contest,
                          contestant: contestant,
                          offline: @offline,
                          puzzle: @contest.puzzles[0],
                          completed: @offline.completed,
                          display_time_from_start: dp,
                          missing_pieces: @offline.missing_pieces,
                          remaining_pieces: @offline.remaining_pieces)
        extend_completions!(contestant)
      end
      redirect_to "/public/#{@contest.friendly_id}/offline/#{@offline.generate_token_for(:token)}/completed"
    else
      render :offline_edit, status: :unprocessable_entity
    end
  end

  def offline_completed
    authorize @contest

    @offline = Offline.find_by_token_for(:token, params[:token])
    if !@offline
      not_found and return
    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_contest
    @contest = Contest.find(params[:id])
  end

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

  def new_contest_params
    params.expect(contest: [ :name, :duration ])
  end

  def settings_general_params
    params.expect(contest: [ :lang, :name, :duration, :public, :ranking_mode, :team, :allow_registration, :code ])
  end

  def settings_offline_params
    params.expect(contest: [ :offline_form ])
  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, :images ])
  end

  def offline_end_params
    params.expect(offline: [ :completed, :end_image, :remaining_pieces, :missing_pieces ])
  end
end