<?php

declare(strict_types=1);

namespace App\Tests\Translation\Sync;

use App\Entity\Locale;
use App\Entity\Organization;
use App\Entity\Platform;
use App\Entity\Project;
use App\Entity\ProjectLocale;
use App\Entity\TranslationKey;
use App\Enum\MessageFormat;
use App\Enum\PlatformKind;
use App\Enum\TextDirection;
use App\Enum\TranslationStatus;
use App\Repository\TranslationKeyRepository;
use App\Translation\Sync\KeySynchronizer;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;

/**
 * Verrouille les quatre règles du `sync`.
 *
 * Ce sont des règles dont la violation ne se voit pas immédiatement : un prune
 * trop large n'échoue pas, il supprime. D'où des tests plutôt qu'une vigilance
 * en revue de code.
 */
final class KeySynchronizerTest extends KernelTestCase
{
    private EntityManagerInterface $entityManager;
    private KeySynchronizer $synchronizer;
    private TranslationKeyRepository $keys;

    private Project $project;
    private Platform $web;
    private Platform $ios;

    protected function setUp(): void
    {
        self::bootKernel();
        $container = self::getContainer();

        $entityManager = $container->get(EntityManagerInterface::class);
        self::assertInstanceOf(EntityManagerInterface::class, $entityManager);
        $this->entityManager = $entityManager;

        $synchronizer = $container->get(KeySynchronizer::class);
        self::assertInstanceOf(KeySynchronizer::class, $synchronizer);
        $this->synchronizer = $synchronizer;

        $keys = $container->get(TranslationKeyRepository::class);
        self::assertInstanceOf(TranslationKeyRepository::class, $keys);
        $this->keys = $keys;

        $this->seed();
    }

    protected function tearDown(): void
    {
        $this->entityManager->createQuery('DELETE FROM '.TranslationKey::class)->execute();
        $this->entityManager->createQuery('DELETE FROM '.Platform::class)->execute();
        $this->entityManager->createQuery('DELETE FROM '.ProjectLocale::class)->execute();
        $this->entityManager->createQuery('DELETE FROM '.Project::class)->execute();
        $this->entityManager->createQuery('DELETE FROM '.Locale::class)->execute();
        $this->entityManager->createQuery('DELETE FROM '.Organization::class)->execute();
        $this->entityManager->clear();

        parent::tearDown();
    }

    public function testNewKeysAreCreatedWithCanonicalIcuAndTargetRows(): void
    {
        $report = $this->synchronizer->synchronize($this->web, [
            'cart.empty' => ['value' => 'Votre panier est vide'],
        ]);

        self::assertSame(['cart.empty'], $report->added);

        $key = $this->find('cart.empty');
        self::assertNotNull($key);
        self::assertSame('Votre panier est vide', $key->getSourceTranslation()?->getValue());

        // Une ligne par langue activée, y compris non traduite : c'est ce qui rend
        // le filtre par statut uniforme et les statistiques calculables.
        self::assertCount(3, $key->getTranslations());

        $spanish = $key->getTranslation($this->locale('es-ES'));
        self::assertNotNull($spanish);
        self::assertSame(TranslationStatus::Untranslated, $spanish->getStatus());
    }

    /**
     * Le cas qui distingue un vrai moteur i18n d'un CRUD : deux clés plates
     * envoyées par le CI doivent redevenir un unique message pluriel.
     */
    public function testI18nextPluralVariantsAreMergedIntoOneKey(): void
    {
        $report = $this->synchronizer->synchronize($this->web, [
            'cart.items_one' => ['value' => '{{count}} article'],
            'cart.items_other' => ['value' => '{{count}} articles'],
        ]);

        self::assertSame(['cart.items'], $report->added);

        $key = $this->find('cart.items');
        self::assertNotNull($key);
        self::assertSame(
            '{count, plural, one {# article} other {# articles}}',
            $key->getSourceTranslation()?->getValue(),
        );
        self::assertSame([['name' => 'count', 'type' => 'number']], $key->getPlaceholders());
    }

    /**
     * Une clé métier qui se termine par `_one` sans avoir de `_other` n'est PAS
     * un pluriel. La confondre la ferait disparaître sous un nom tronqué.
     */
    public function testKeyEndingLikeAPluralSuffixIsNotMerged(): void
    {
        $report = $this->synchronizer->synchronize($this->web, [
            'wizard.step_one' => ['value' => 'Première étape'],
        ]);

        self::assertSame(['wizard.step_one'], $report->added);
        self::assertNotNull($this->find('wizard.step_one'));
    }

    public function testRunningTwiceChangesNothing(): void
    {
        $entries = ['cart.empty' => ['value' => 'Votre panier est vide']];

        $this->synchronizer->synchronize($this->web, $entries);
        $second = $this->synchronizer->synchronize($this->web, $entries);

        self::assertSame([], $second->added);
        self::assertSame([], $second->updated);
        self::assertSame(1, $second->unchanged);
    }

    public function testChangingTheSourceFlagsExistingTranslations(): void
    {
        $this->synchronizer->synchronize($this->web, ['cart.empty' => ['value' => 'Panier vide']]);

        $key = $this->find('cart.empty');
        self::assertNotNull($key);

        $spanish = $key->getTranslation($this->locale('es-ES'));
        self::assertNotNull($spanish);
        $spanish->write('Carrito vacío', TranslationStatus::Translated, 'Panier vide');
        $this->entityManager->flush();

        $report = $this->synchronizer->synchronize($this->web, [
            'cart.empty' => ['value' => 'Votre panier est vide'],
        ]);

        self::assertSame(['cart.empty'], $report->updated);
        self::assertSame(1, $report->flagged);

        $this->entityManager->refresh($spanish);
        self::assertSame(TranslationStatus::NeedsReview, $spanish->getStatus());
        self::assertSame('Carrito vacío', $spanish->getValue(), 'La valeur doit être conservée : le traducteur doit pouvoir juger.');
    }

    /**
     * LA règle du modèle à plateformes enfants. Sans elle, le CI de
     * l'application web archive les clés propres à iOS.
     */
    public function testPruneOnlyDetachesFromTheSynchronisedPlatform(): void
    {
        $this->synchronizer->synchronize($this->web, [
            'common.save' => ['value' => 'Enregistrer'],
            'web.only' => ['value' => 'Spécifique au web'],
        ]);
        $this->synchronizer->synchronize($this->ios, [
            'common.save' => ['value' => 'Enregistrer'],
        ]);

        // Le push suivant ne contient NI l'une NI l'autre : les deux deviennent
        // orphelines pour la plateforme web, et leur sort doit différer.
        $report = $this->synchronizer->synchronize($this->web, [
            'autre.cle' => ['value' => 'Autre'],
        ], prune: true);

        self::assertSame(['common.save', 'web.only'], $report->pruned);

        $shared = $this->find('common.save');
        self::assertNotNull($shared);
        self::assertSame(['ios'], $this->platformSlugs($shared), 'Seule l\'appartenance à web doit disparaître.');
        self::assertFalse($shared->isArchived(), 'La clé appartient encore à iOS : elle ne doit pas être archivée.');

        $exclusive = $this->find('web.only');
        self::assertNotNull($exclusive);
        self::assertSame([], $this->platformSlugs($exclusive));
        self::assertTrue($exclusive->isArchived(), 'Plus aucune plateforme ne la référence : archivage attendu.');
    }

    public function testWithoutPruneNothingIsDetached(): void
    {
        $this->synchronizer->synchronize($this->web, [
            'a' => ['value' => 'A'],
            'b' => ['value' => 'B'],
        ]);

        $report = $this->synchronizer->synchronize($this->web, ['a' => ['value' => 'A']]);

        self::assertSame(['b'], $report->orphaned, 'L\'orpheline est signalée…');
        self::assertSame([], $report->pruned, '…mais jamais retirée sans demande explicite.');

        $key = $this->find('b');
        self::assertNotNull($key);
        self::assertFalse($key->isArchived());
    }

    public function testDryRunWritesNothing(): void
    {
        $report = $this->synchronizer->synchronize(
            $this->web,
            ['cart.empty' => ['value' => 'Votre panier est vide']],
            dryRun: true,
        );

        self::assertSame(['cart.empty'], $report->added);
        self::assertTrue($report->dryRun);
        self::assertNull($this->find('cart.empty'), 'Une simulation ne doit rien écrire.');
    }

    /**
     * Un push de plusieurs milliers de clés dont deux sont fautives doit
     * appliquer les autres. L'inverse obligerait à corriger en aveugle.
     */
    public function testInvalidKeysAreReportedWithoutBlockingTheOthers(): void
    {
        $report = $this->synchronizer->synchronize($this->web, [
            'valide' => ['value' => 'Correct'],
            'casse' => ['value' => 'Bonjour {{prenom'],
        ]);

        self::assertSame(['valide'], $report->added);
        self::assertCount(1, $report->errors);
        self::assertSame('casse', $report->errors[0]['key']);
        self::assertNotNull($this->find('valide'));
    }

    public function testKeyNamingPatternIsEnforced(): void
    {
        $report = $this->synchronizer->synchronize($this->web, [
            'Header.LoginButton' => ['value' => 'Connexion'],
        ]);

        self::assertSame([], $report->added);
        self::assertCount(1, $report->errors);
        self::assertStringContainsString('convention de nommage', $report->errors[0]['message']);
    }

    /**
     * La description saisie par une traductrice ne doit pas être effacée par un
     * push qui n'en fournit pas.
     */
    public function testPushWithoutDescriptionDoesNotEraseTheExistingOne(): void
    {
        $this->synchronizer->synchronize($this->web, [
            'cart.empty' => ['value' => 'Panier vide', 'description' => 'État vide du panier.'],
        ]);

        $this->synchronizer->synchronize($this->web, [
            'cart.empty' => ['value' => 'Votre panier est vide'],
        ]);

        $key = $this->find('cart.empty');
        self::assertNotNull($key);
        self::assertSame('État vide du panier.', $key->getDescription());
    }

    // ── Utilitaires ───────────────────────────────────────────────────────

    private function seed(): void
    {
        $organization = new Organization('Test', 'test');
        $this->entityManager->persist($organization);

        $french = new Locale('fr-FR', 'French', 'Français', TextDirection::Ltr, ['one', 'many', 'other']);
        $spanish = new Locale('es-ES', 'Spanish', 'Español', TextDirection::Ltr, ['one', 'many', 'other']);
        $english = new Locale('en-GB', 'English', 'English', TextDirection::Ltr, ['one', 'other']);
        $this->entityManager->persist($french);
        $this->entityManager->persist($spanish);
        $this->entityManager->persist($english);

        $this->project = new Project($organization, 'Test', 'test', $french);
        $this->entityManager->persist($this->project);

        foreach ([$french, $spanish, $english] as $locale) {
            $this->entityManager->persist(new ProjectLocale($this->project, $locale));
        }

        $this->web = new Platform($this->project, 'Web', 'web', PlatformKind::Web, MessageFormat::I18next);
        $this->ios = new Platform($this->project, 'iOS', 'ios', PlatformKind::Ios, MessageFormat::Icu);
        $this->entityManager->persist($this->web);
        $this->entityManager->persist($this->ios);

        $this->entityManager->flush();
    }

    private function find(string $keyPath): ?TranslationKey
    {
        return $this->keys->findOneBy([
            'project' => $this->project,
            'keyHash' => TranslationKey::hashPath($keyPath),
        ]);
    }

    private function locale(string $code): Locale
    {
        $locale = $this->entityManager->getRepository(Locale::class)->findOneBy(['code' => $code]);
        self::assertInstanceOf(Locale::class, $locale);

        return $locale;
    }

    /**
     * @return list<string>
     */
    private function platformSlugs(TranslationKey $key): array
    {
        $slugs = [];
        foreach ($key->getPlatforms() as $platform) {
            $slugs[] = $platform->getSlug();
        }
        sort($slugs);

        return $slugs;
    }
}