<?php

declare(strict_types=1);

namespace App\Helper;

use Carbon\Carbon;

class Time
{
    public static function getDateList($start, $end)
    {
        $startTime = strtotime($start . ' 00:00:00');
        $endTime = strtotime($end . ' 00:00:00');
        $dateList = [];
        while ($startTime <= $endTime) {
            $dateList[] = date('Y-m-d', $startTime);
            $startTime += 24 * 60 * 60;
        }
        return $dateList;
    }

    public static function dateTimeRange(array $dateRange, $withTime = true)
    {
        if (!isset($dateRange[0]) || !isset($dateRange[1]) || count($dateRange) != 2) {
            throw new \Exception('dateTimeRange param is error');
        }
        $dateRangeWithTime = false;
        if (
            self::checkFormatTime($dateRange[0], 'Y-m-d') &&
            self::checkFormatTime($dateRange[1], 'Y-m-d')
        ) {
            $dateRangeWithTime = false;
        } elseif (
            self::checkFormatTime($dateRange[0], 'Y-m-d H:i:s') &&
            self::checkFormatTime($dateRange[1], 'Y-m-d H:i:s')
        ) {
            $dateRangeWithTime = true;
        } else {
            throw new \Exception('dateTimeRange format is error');
        }
        
        if ($withTime && !$dateRangeWithTime) {
            return [$dateRange[0] . ' 00:00:00', $dateRange[1] . ' 23:59:59'];
        } elseif (!$withTime && $dateRangeWithTime) {
            return [date('Y-m-d', strtotime($dateRange[0])), date('Y-m-d', strtotime($dateRange[1]))];
        }

        return $dateRange;
    }

    public static function checkFormatTime($timeString, $format = 'Y-m-d H:i:s') {
        $timestamp = strtotime($timeString);
        if (!$timestamp) {
            return false;
        }

        if(date($format, $timestamp) === $timeString) {
            return true;
        }
    
        return false;
    }

    public static function getMonthLastDate($month)
    {
        $firstDate = $month . '-01';
        return date('Y-m-d', strtotime($firstDate . ' +1 month -1 day'));
    }

    public static function getMonthDateRange($month)
    {
        $carbon = Carbon::parse($month);
        return [
            $carbon->firstOfMonth()->format('Y-m-d'),
            $carbon->lastOfMonth()->format('Y-m-d')
        ];
    }

    public static function getLastMonth()
    {
        return Carbon::now()->subMonth()->format('Y-m');
    }

    public static function getNextMonth()
    {
        return Carbon::now()->addMonth()->format('Y-m');
    }
}