<?php

namespace App\User\Database;

class CountryLanguages
{
    public static $languages = [
        'English (US)',
        'English',
        'French',
        'German',
        'Italian',
        'Spanish',
        'Portuguese',
        'Mandarin',
        'Japanese',
        'Korean',
        'Russian',
        'Hindi',
        'Arabic',
        'Dutch',
        'Swedish',
        'Norwegian',
        'Danish',
        'Finnish',
        'Polish',
        'Turkish',
        'Persian',
        'Thai',
        'Vietnamese',
        'Indonesian',
        'Urdu',
        'Bengali',
        'Ukrainian',
        'Greek',
        'Hebrew',
        'Malay',
        'Filipino'
    ];

    public static function fromCountryCode(string $countryCode): ?string
    {
        $countryLanguages = [
            'US' => 'English (US)',
            'GB' => 'English',
            'CA' => 'English', // Note: French is also official in parts of Canada
            'FR' => 'French',
            'DE' => 'German',
            'IT' => 'Italian',
            'ES' => 'Spanish',
            'MX' => 'Spanish',
            'BR' => 'Portuguese',
            'PT' => 'Portuguese',
            'CN' => 'Mandarin',
            'JP' => 'Japanese',
            'KR' => 'Korean',
            'RU' => 'Russian',
            'IN' => 'Hindi', // Note: India has multiple official languages
            'SA' => 'Arabic',
            'EG' => 'Arabic',
            'ZA' => 'English', // South Africa has 11 official languages
            'NG' => 'English',
            'AU' => 'English',
            'AR' => 'Spanish',
            'CH' => 'German', // Also French, Italian, Romansh
            'BE' => 'Dutch', // Also French and German
            'NL' => 'Dutch',
            'SE' => 'Swedish',
            'NO' => 'Norwegian',
            'DK' => 'Danish',
            'FI' => 'Finnish',
            'PL' => 'Polish',
            'TR' => 'Turkish',
            'IR' => 'Persian',
            'TH' => 'Thai',
            'VN' => 'Vietnamese',
            'ID' => 'Indonesian',
            'PK' => 'Urdu',
            'BD' => 'Bengali',
            'UA' => 'Ukrainian',
            'GR' => 'Greek',
            'IL' => 'Hebrew',
            'MY' => 'Malay',
            'PH' => 'Filipino',
            'KE' => 'English', // Also Swahili
        ];

        return $countryLanguages[$countryCode] ?? null;
    }

    public static function fromCountryName(string $countryName): ?string
    {
        $countryLanguages = [
            'United States' => 'English (US)',
            'United Kingdom' => 'English',
            'Canada' => 'English', // French is also official
            'France' => 'French',
            'Germany' => 'German',
            'Italy' => 'Italian',
            'Spain' => 'Spanish',
            'Mexico' => 'Spanish',
            'Brazil' => 'Portuguese',
            'Portugal' => 'Portuguese',
            'China' => 'Mandarin',
            'Japan' => 'Japanese',
            'South Korea' => 'Korean',
            'Russia' => 'Russian',
            'India' => 'Hindi', // Also English and many regional languages
            'Saudi Arabia' => 'Arabic',
            'Egypt' => 'Arabic',
            'South Africa' => 'English', // One of 11 official languages
            'Nigeria' => 'English',
            'Australia' => 'English',
            'Argentina' => 'Spanish',
            'Switzerland' => 'German', // Also French, Italian, Romansh
            'Belgium' => 'Dutch', // Also French and German
            'Netherlands' => 'Dutch',
            'Sweden' => 'Swedish',
            'Norway' => 'Norwegian',
            'Denmark' => 'Danish',
            'Finland' => 'Finnish',
            'Poland' => 'Polish',
            'Turkey' => 'Turkish',
            'Iran' => 'Persian',
            'Thailand' => 'Thai',
            'Vietnam' => 'Vietnamese',
            'Indonesia' => 'Indonesian',
            'Pakistan' => 'Urdu',
            'Bangladesh' => 'Bengali',
            'Ukraine' => 'Ukrainian',
            'Greece' => 'Greek',
            'Israel' => 'Hebrew',
            'Malaysia' => 'Malay',
            'Philippines' => 'Filipino',
            'Kenya' => 'English', // Also Swahili
        ];

        return $countryLanguages[$countryName] ?? null;
    }

    public static function asSelectOptions(): array
    {
        $result = [];
        foreach (static::$languages as $language) {
            $result[$language] = $language;
        }
        return $result;
    }
}