# frozen_string_literal: true

class MatchesController < ApplicationController
  before_action :set_match, only: %i[show update]
  before_action :validate_params, only: %i[update]
  before_action -> { require_owner! @match.owner }, only: %i[update]

  # GET /matches/1
  def show
    render json: @match, include: ['match_scores.points', 'match_scores.team']
  end

  # PATCH/PUT /matches/1
  def update
    new_state = match_params['state']
    if new_state == 'finished'
      # implement logic to move the winning team into the next stage
      match_params['state'] = 'finished' # or 'team2_won' or 'undecided'
      render json: {}, status: :not_implemented
    end
    if @match.update(match_params)
      render json: @match
    else
      render json: @match.errors, status: :unprocessable_entity
    end
  end

  private

  def validate_params
    case match_params['state']
    when 'in_progress'
      render json: { error: 'Match can\'t start in this state' }, status: :unprocessable_entity \
        unless @match.not_started?
    when 'finished'
      render json: { error: 'Match can\'t finish in this state' }, status: :unprocessable_entity \
        unless @match.in_progress?
    else
      render json: { error: 'Invalid target state' }, status: :unprocessable_entity
    end
  end

  def set_match
    @match = Match.find(params[:id])
  end

  def match_params
    params.slice(:state).permit!
  end
end