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
    @title = "Contestant"
  end

  def new
    @contestant = Contestant.new
    @title = "New contestant"
  end

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

  def update
    if @contestant.update(contestant_params)
      redirect_to @contest
    else
      @title = "Contestant"
      render :edit, status: :unprocessable_entity
    end
  end

  def destroy
    @contestant.destroy
    redirect_to contest_path(@contest)
  end

  private

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

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

  def pad(n)
    if n > 9
      return n.to_s
    end
    "0" + n.to_s
  end

  def display_time(seconds)
    if seconds > 3600
      hours = seconds / 3600
      return hours.to_s + ":" + display_time(seconds % 3600)
    elsif seconds > 60
      minutes = seconds / 60
      return pad(minutes) + ":" + display_time(seconds % 60)
    end
    pad(seconds)
  end

  def set_completions
    @completions = @contestant.completions.order(:time_seconds)
    current_time_from_start = 0
    @completions.each do |completion|
      completion.display_time_from_start = display_time(completion.time_seconds)
      completion.display_relative_time = display_time(completion.time_seconds - current_time_from_start)
      current_time_from_start += completion.time_seconds
    end
  end

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