<?php

namespace OCA\Gestion\Helpers;

use DateTime;
use DateTimeZone;
use Exception;
use IntlDateFormatter;

class DateHelpers
{
    public static function isWeekend(string $dateString): bool
    {
        try {
            $date = new DateTime($dateString);
            $dayOfWeek = $date->format('N');
            return in_array($dayOfWeek, [6, 7]);
        } catch (Exception $e) {
            // Handle invalid date strings
            return false;
        }
    }

    public static function GetMonthPlainString($month){
        $formatter = new IntlDateFormatter(
            'fr_FR',
            IntlDateFormatter::FULL,
            IntlDateFormatter::NONE,
            null,
            null,
            'MMMM'
        );
        
        $date = DateTime::createFromFormat('!m', $month);
        $monthString = strtoupper($formatter->format($date));
        $normalizedMonth = mb_convert_case($monthString, MB_CASE_UPPER, "UTF-8");
        
        return $normalizedMonth;
    }

    public static function GetDateWithFormatDayAndMonthPlainString(string $date){
        $dateTime = new DateTime($date);
        $formattedDate = $dateTime->format('d F');
        $formattedDate = str_replace(
            array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'),
            array('JANVIER', 'FEVRIER', 'MARS', 'AVRIL', 'MAI', 'JUIN', 'JUILLET', 'AOUT', 'SEPTEMBRE', 'OCTOBRE', 'NOVEMBRE', 'DECEMBRE'),
            $formattedDate
        );

        return $formattedDate;
    }

    public static function GetFullFactureOrDevisNumberByDate($date,$devisNumber,$prefix){
        $year = $date->format('y');
        $month = $date->format('m');
        $devisNumber = str_pad($devisNumber, 2, '0', STR_PAD_LEFT);
        $devisNumber = $prefix . $year . $month . $devisNumber;
        return $devisNumber;
    }

    public static function GetLastDayOfTheMonthOfADate($datetime){
        $datetime->modify('last day of this month');
        $lastDay = $datetime;
        return $lastDay;
    }

    public static function getDatesOfMonth($year, $month) {
        $dates = [];
        $daysInMonth = self::getDaysCountInAMonthAndYear($month, $year);
        
        for ($day = 1; $day <= $daysInMonth; $day++) {
            $dateString = sprintf("%04d-%02d-%02d", $year, $month, $day);
            $dates[] = new DateTime($dateString);
        }
    
        return $dates;
    }
    
    public static function getDaysCountInAMonthAndYear($month,$year){
        return $month == 2 ? ($year % 4 ? 28 : ($year % 100 ? 29 : ($year % 400 ? 28 : 29))) : (($month - 1) % 7 % 2 ? 30 : 31);
    }

}