<?php

namespace App;

use DateTime;

class Helper
{
    public static function formatNumber($amount)
    {
        return number_format($amount, 2, '.', ',');
    }

    public static function formatDate($date_string)
    {
        return (new DateTime($date_string))->format("d-m-Y");
    }

    public static function terbilangBm(int $number): string
    {
        $units = [
            0 => 'kosong',
            1 => 'satu',
            2 => 'dua',
            3 => 'tiga',
            4 => 'empat',
            5 => 'lima',
            6 => 'enam',
            7 => 'tujuh',
            8 => 'lapan',
            9 => 'sembilan',
            10 => 'sepuluh',
            11 => 'sebelas'
        ];

        if ($number < 0) return 'negatif ' . self::terbilangBm(abs($number));
        if ($number < 12) return $units[$number];
        if ($number < 20) return self::terbilangBm($number - 10) . ' belas';
        if ($number < 100) {
            $tens = intdiv($number, 10);
            $rest = $number % 10;
            return self::terbilangBm($tens) . ' puluh' . ($rest ? ' ' . self::terbilangBm($rest) : '');
        }
        if ($number < 200) return 'seratus' . ($number > 100 ? ' ' . self::terbilangBm($number - 100) : '');
        if ($number < 1000) {
            $hundreds = intdiv($number, 100);
            $rest = $number % 100;
            return self::terbilangBm($hundreds) . ' ratus' . ($rest ? ' ' . self::terbilangBm($rest) : '');
        }
        if ($number < 2000) return 'seribu' . ($number > 1000 ? ' ' . self::terbilangBm($number - 1000) : '');
        if ($number < 1000000) {
            $thousands = intdiv($number, 1000);
            $rest = $number % 1000;
            return self::terbilangBm($thousands) . ' ribu' . ($rest ? ' ' . self::terbilangBm($rest) : '');
        }
        if ($number < 1000000000) {
            $millions = intdiv($number, 1000000);
            $rest = $number % 1000000;
            return self::terbilangBm($millions) . ' juta' . ($rest ? ' ' . self::terbilangBm($rest) : '');
        }
        return 'terlalu besar';
    }

    public static function ringgitTerbilang($amount, bool $tambahSahaja = true): string
    {
        $formatted = number_format((float)$amount, 2, '.', '');
        [$ringgitStr, $senStr] = explode('.', $formatted);

        $ringgit = (int)$ringgitStr;
        $sen = (int)$senStr;

        $parts = [];
        $parts[] = self::terbilangBm($ringgit) . ' ringgit';

        if ($sen > 0) {
            $parts[] = 'dan ' . self::terbilangBm($sen) . ' sen';
        } elseif ($tambahSahaja) {
            $parts[] = 'sahaja';
        }

        return trim(preg_replace('/\s+/', ' ', implode(' ', $parts)));
    }
}