<?php

namespace App\Library;


class FormatSeatWithNumbering
{
    private $x, $y;

    public function __construct($x, $y)
    {
        $this->x = $x;
        $this->y = $y;

        $this->handleEmptyAisles();
        $this->handleShiftLeft();
    }

    private function handleEmptyAisles()
    {
        if($this->isSeatOnRightSideFloor()){
            $this->decreaseY();
        }
        if ($this->isSeatInHorizontalCenter()) {
            $this->decreaseX();
        } else if ($this->isSeatInEmpore()) {
            $this->setAsEmporeSeat();
        }
    }

    private function handleShiftLeft(){
        if($this->x == 9){
            $this->y -=2;
        }else if($this->x == 10){
            $this->y -=4;
        }else if($this->x == 11){
            $this->y -= 6;
        }else if($this->x == 12){
            $this->y -= 8;
        }else if($this->x == 13){
            $this->y -= 13;
        }else if($this->x == 'E1'){
            $this->y-=4;
        }else if($this->x == 'E2'){
            $this->y-=3;
        }else if($this->x == 'E3'){
            $this->y-=6;
        }else if($this->x == 'E4'){
            $this->y-=10;
        }else if($this->x =='E5'){
            $this->y-=14;
        }else if($this->x =='E6'){
            $this->y-=18;
        }
    }

    private function isSeatInHorizontalCenter()
    {
        return $this->x < 16 && $this->x > 7;
    }

    private function decreaseX()
    {
        $this->x--;
    }

    private function isSeatOnRightSideFloor()
    {
        return $this->y > 13 && $this->x < 16;
    }

    private function decreaseY()
    {
        $this->y--;
    }

    private function isSeatInEmpore()
    {
        return $this->x >= 16;
    }

    private function setAsEmporeSeat()
    {
        $this->x = $this->x - 17;
        $this->x = 'E' . $this->x;
        if($this->y >= 19){
            $this->y -= 2;
        }
    }

    public function getText(){
        if(substr($this->x,0,1) === "E") {
            return "Empore Reihe " . substr($this->x, 1) . ", Platz " . $this->y;
        }else{
            return "Erdgeschoss Reihe ".$this->x.", Platz ".$this->y;
        }
    }
}