<?php

use App\Enums\VoucherType;
use Illuminate\Support\Number;
use Illuminate\Support\Str;

if (! function_exists('currency')) {
    /**
     * Format value as currency
     *
     * @param  string|null  $currency  Currency prefix (default: null)
     * @param  string  $locale  Locale for formatting (default: 'id_ID')
     */
    function currency(string|int|float|null $value = null, ?string $currency = null, string $locale = 'id_ID'): string
    {
        if ($value === null) {
            return '';
        }

        return $currency.Number::format($value, locale: $locale);
    }
}

if (! function_exists('replaceCurrency')) {
    /**
     * Strip currency format from string and return as integer
     */
    function replaceCurrency(?string $value = null): ?int
    {
        if ($value === null) {
            return null;
        }

        $cleaned = Str::of($value)
            ->replace('Rp', '')
            ->replace('.', '')
            ->replace(' ', '')
            ->__toString();

        return (int) $cleaned;
    }
}

if (! function_exists('percentage')) {
    /**
     * Format value as percentage
     *
     * @param  int  $precision  Precision (default: 2)
     * @param  int  $maxPrecision  Max precision (default: 2)
     * @param  string  $locale  Locale for formatting (default: 'id_ID')
     */
    function percentage(int|float $value, int $precision = 2, int $maxPrecision = 2, string $locale = 'id_ID'): string
    {
        return Number::percentage($value, $precision, $maxPrecision, $locale);
    }
}

if (! function_exists('formatDiscount')) {
    /**
     * Format discount based on voucher type (percentage or fixed amount)
     */
    function formatDiscount(int|float $amount, VoucherType $type, string $currency = 'Rp'): string
    {
        return $type === VoucherType::PERCENTAGE
            ? percentage($amount)
            : currency($amount, $currency);
    }
}

if (! function_exists('generateReferralCode')) {
    /**
     * Generate referral code from username and unique number
     */
    function generateReferralCode(string $username, int $unique): string
    {
        $prefix = Str::substr($username, 0, 6);
        $year = date('y');

        return Str::upper($prefix).$year.$unique;
    }
}

if (! function_exists('sanitizeIntegers')) {
    /**
     * Sanitize integer values in an array (convert empty string/null to 0)
     *
     * @param  array  $integerKeys  Keys to sanitize (empty = all keys)
     */
    function sanitizeIntegers(array $data, array $integerKeys = []): array
    {
        foreach ($data as $key => $value) {
            if (empty($integerKeys) || in_array($key, $integerKeys)) {
                if ($value === '' || $value === null) {
                    $data[$key] = 0;
                }
            }
        }

        return $data;
    }
}

if (! function_exists('formatPhoneNumber')) {
    /**
     * Format Indonesian phone number with customizable country prefix
     *
     * @param  string  $prefix  Country prefix (default: '+62')
     * @param  bool  $useDash  Use dashes for formatting (default: false)
     */
    function formatPhoneNumber(string $number, string $prefix = '+62', bool $useDash = false): string
    {
        $clean = preg_replace('/\D+/', '', $number);
        $clean = preg_replace('/^(0|62)/', '', $clean);
        $formatted = $prefix.$clean;

        if ($useDash) {
            $formatted = preg_replace('/(\d{3})(\d{3,4})(\d{3,4})(\d+)?/', $prefix.'-$1-$2-$3$4', $formatted);
        }

        return $formatted;
    }
}

if (! function_exists('terbilang')) {
    function terbilang($angka)
    {
        $angka = (int) abs($angka);
        $huruf = ['', 'satu', 'dua', 'tiga', 'empat', 'lima', 'enam', 'tujuh', 'delapan', 'sembilan', 'sepuluh', 'sebelas'];

        if ($angka < 12) {
            return $huruf[$angka];
        } elseif ($angka < 20) {
            return $huruf[$angka - 10].' belas';
        } elseif ($angka < 100) {
            $result = $huruf[$angka / 10].' puluh';
            $sisa = $angka % 10;
            if ($sisa > 0) {
                $result .= ' '.$huruf[$sisa];
            }

            return $result;
        } elseif ($angka < 200) {
            return 'seratus '.terbilang($angka - 100);
        } elseif ($angka < 1000) {
            $result = $huruf[$angka / 100].' ratus';
            $sisa = $angka % 100;
            if ($sisa > 0) {
                $result .= ' '.terbilang($sisa);
            }

            return $result;
        } elseif ($angka < 2000) {
            return 'seribu '.terbilang($angka - 1000);
        } elseif ($angka < 1000000) {
            $result = terbilang($angka / 1000).' ribu';
            $sisa = $angka % 1000;
            if ($sisa > 0) {
                $result .= ' '.terbilang($sisa);
            }

            return $result;
        } elseif ($angka < 1000000000) {
            $result = terbilang($angka / 1000000).' juta';
            $sisa = $angka % 1000000;
            if ($sisa > 0) {
                $result .= ' '.terbilang($sisa);
            }

            return $result;
        } elseif ($angka < 1000000000000) {
            $result = terbilang($angka / 1000000000).' milyar';
            $sisa = $angka % 1000000000;
            if ($sisa > 0) {
                $result .= ' '.terbilang($sisa);
            }

            return $result;
        } elseif ($angka < 1000000000000000) {
            $result = terbilang($angka / 1000000000000).' trilyun';
            $sisa = $angka % 1000000000000;
            if ($sisa > 0) {
                $result .= ' '.terbilang($sisa);
            }

            return $result;
        } else {
            return 'Angka terlalu besar';
        }
    }
}