<?php

namespace App\Http\Controllers\bo;

use App\Http\Controllers\Controller;
use App\Models\InstantWin;
use App\Models\Prizes;
use App\Models\Settings;

class InstantWinController extends Controller
{
    public function index() {
        $nbInstantWin = InstantWin::all()->count();
        $canGenerate = 0;

        if (intval($nbInstantWin) > 0) {
            $canGenerate = 0;
        } else {
            $nbLots = Prizes::all()->count();
            if (intval($nbLots) > 0) {
                $canGenerate = 1;
            } else {
                $canGenerate = 0;
            }
        }

        $instantWin = InstantWin::orderBy('appear_date')->get();

        return view('bo.instant-win.index', [
            'can_generate' => $canGenerate,
            'instant_win' => $instantWin
        ]);
    }

    public function instantWinGenerate() {
        $start_date = Settings::latest()->value("start_date");
        $end_date = Settings::latest()->value("end_date");
        $lots = Prizes::all();


        $begin = new \DateTime( $start_date );
        $end = new \DateTime( $end_date );
        $interval = new \DateInterval('P1D');
        $daterange = new \DatePeriod($begin, $interval ,$end);
        $dateGlobal = [];
        $lotsGlobal = [];


        foreach ($lots as $k => $lot)
            for ($i = 0; $i < $lot->quantity; $i++)
                $lotsGlobal[] = ['id' => $lot->id, 'name' => $lot->label_one, 'hour' => str_pad(mt_rand(6, 22), 2, "0", STR_PAD_LEFT) . ":" . str_pad(mt_rand(0, 59), 2, "0", STR_PAD_LEFT) . ":00"];
        shuffle($lotsGlobal);
        foreach($daterange as $date)
            array_push($dateGlobal, ['date' => $date->format("Y-m-d"), 'lots' => []]);

        $res = $this->generate($lotsGlobal,$dateGlobal, 0);

        foreach ($res as $date) {
            foreach ($date['lots'] as $lot) {
                $iw = new InstantWin();
                $iw->prize_id = $lot['id'];
                $iw->appear_date = date('Y-m-d H:i:s', strtotime($date['date'] . " " . $lot['hour']));
                $iw->save();
            }
        }

        $instantWins = InstantWin::all();
        return json_encode($instantWins);
    }


    private function generate($lotsGlobal, $dateGlobal, $lotsDone){
        $rKey = array_rand($dateGlobal, 1);
        if ($lotsDone < count($dateGlobal)) {
            if (count($dateGlobal[$rKey]['lots']) > 0) {
                return $this->generate($lotsGlobal, $dateGlobal, $lotsDone);
            }
        }
        array_push($dateGlobal[$rKey]['lots'], $lotsGlobal[$lotsDone++]);
        if ($lotsDone < count($lotsGlobal)) {
            return $this->generate($lotsGlobal, $dateGlobal, $lotsDone);
        }
        foreach ($dateGlobal as $k => $date)
            usort($dateGlobal[$k]['lots'], [$this, 'sortFunction']);
        return $dateGlobal;
    }


    private function sortFunction( $a, $b ) {
        return strtotime($a["hour"]) - strtotime($b["hour"]);
    }
}