<?php

use App\Services\LocaleGuard;

uses(Tests\TestCase::class);

it('supports french as an application locale', function () {
    expect(config('localization.supportedLocales'))
        ->toHaveKey('fr')
        ->and(LocaleGuard::normalize('FR'))
        ->toBe('fr');
});

it('keeps french translation files in sync with the german source keys', function () {
    foreach (glob(resource_path('lang/de/*.php')) as $germanFile) {
        $fileName = basename($germanFile);
        $frenchFile = resource_path('lang/fr/'.$fileName);

        expect($frenchFile)->toBeFile();
        expect(frenchLocalizationFlattenTranslationKeys(require $frenchFile))
            ->toEqualCanonicalizing(frenchLocalizationFlattenTranslationKeys(require $germanFile));
    }
});

/**
 * @return array<int, string>
 */
function frenchLocalizationFlattenTranslationKeys(array $translations, string $prefix = ''): array
{
    $keys = [];

    foreach ($translations as $key => $value) {
        $translationKey = $prefix.(string) $key;

        if (is_array($value)) {
            $keys = [
                ...$keys,
                ...frenchLocalizationFlattenTranslationKeys($value, $translationKey.'.'),
            ];

            continue;
        }

        $keys[] = $translationKey;
    }

    return $keys;
}