class ContestantsController < ApplicationController
  before_action :set_contest
  before_action :set_contestant, only: %i[ destroy edit update]
  before_action :set_completions, only: %i[edit update ]

  def edit
    authorize @contest
  end

  def new
    authorize @contest

    @contestant = Contestant.new
  end

  def create
    authorize @contest

    @contestant = Contestant.new(contestant_params)
    @contestant.contest_id = @contest.id
    if @contestant.save
      redirect_to contest_path(@contest)
    else
      render :new, status: :unprocessable_entity
    end
  end

  def update
    authorize @contest

    if @contestant.update(contestant_params)
      redirect_to @contest
    else
      render :edit, status: :unprocessable_entity
    end
  end

  def destroy
    authorize @contest

    @contestant.destroy
    redirect_to contest_path(@contest)
  end

  def import
    authorize @contest

    @csv_import = CsvImport.new
  end

  def upload_csv
    authorize @contest

    @csv_import = CsvImport.new(params.require(:csv_import).permit(:file, :separator))
    if @csv_import.save
      redirect_to "/contests/#{@contest.id}/import/#{@csv_import.id}"
    else
      render :import, status: :unprocessable_entity
    end
  end

  def convert_csv
    authorize @contest

    @csv_import = CsvImport.find(params[:id])
    @content = JSON.parse(@csv_import.content)
    @form = Forms::CsvConversionForm.new
  end

  def finalize_import
    authorize @contest

    @csv_import = CsvImport.find(params[:id])
    @content = JSON.parse(@csv_import.content)
    all_params = params.require(:forms_csv_conversion_form)
    @form = Forms::CsvConversionForm.new(params.require(:forms_csv_conversion_form).permit(:email_column, :name_column))
    if @form.valid?
      @content.each_with_index do |row, i|
        if all_params["row_#{i}".to_sym] == "1"
          if @form.email_column == -1
            Contestant.create(name: row[@form.name_column], contest: @contest)
          else
            Contestant.create(name: row[@form.name_column], email: row[@form.email_column], contest: @contest)
          end
        end
      end
      redirect_to contest_path(@contest)
    else
      render :convert_csv, status: :unprocessable_entity
    end
  end

  private

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

  def set_contestant
    @contestant = Contestant.find(params[:id])
  end

  def set_completions
    @completions = @contestant.completions.order(:time_seconds)
  end

  def contestant_params
    params.expect(contestant: [ :email, :name ])
  end
end