<?php

declare(strict_types=1);

namespace Tests\Kernel;

use Netig\Netslim\Kernel\Persistence\Infrastructure\Migrator;
use PHPUnit\Framework\TestCase;
use Tests\Support\TestDatabaseFactory;

/**
 * Tests unitaires pour Migrator.
 *
 * Vérifie que run() crée la table de suivi, exécute uniquement les migrations
 * en attente puis agrège correctement les migrations du socle (`Identity`,
 * `Settings`, `AuditLog`, `Notifications`, `Taxonomy`, `Media`).
 */
#[\PHPUnit\Framework\Attributes\AllowMockObjectsWithoutExpectations]
final class MigratorTest extends TestCase
{
    private \PDO $db;

    protected function setUp(): void
    {
        $this->db = TestDatabaseFactory::createInMemory();
    }

    public function testRunCreatesMigrationsTable(): void
    {
        Migrator::run($this->db);

        $stmt = $this->db->query("SELECT name FROM sqlite_master WHERE type='table' AND name='migrations'");
        self::assertNotFalse($stmt->fetchColumn(), 'La table migrations doit exister après run().');
    }

    public function testRunIsIdempotent(): void
    {
        Migrator::run($this->db);
        Migrator::run($this->db);

        $this->addToAssertionCount(1);
    }

    public function testAlreadyAppliedMigrationIsSkipped(): void
    {
        Migrator::run($this->db);
        $before = $this->countMigrations();

        $stmt = $this->db->prepare('INSERT INTO migrations (version, run_at) VALUES (:v, :r)');
        $stmt->execute([':v' => '999_future_migration', ':r' => date('Y-m-d H:i:s')]);

        Migrator::run($this->db);
        $after = $this->countMigrations();

        self::assertSame($before + 1, $after);
    }

    public function testRunRecordsModuleMigrationsInTable(): void
    {
        Migrator::run($this->db);

        self::assertGreaterThan(0, $this->countMigrations(), 'Au moins une migration du socle doit être enregistrée.');
    }

    public function testRunCreatesCoreModuleTables(): void
    {
        Migrator::run($this->db);

        foreach (['users', 'password_resets', 'rate_limits', 'settings', 'audit_log', 'notification_dispatches', 'categories', 'media'] as $table) {
            $stmt = $this->db->query(sprintf("SELECT name FROM sqlite_master WHERE type='table' AND name='%s'", $table));
            self::assertNotFalse($stmt->fetchColumn(), sprintf('La table %s doit exister après run().', $table));
        }
    }

    private function countMigrations(): int
    {
        return (int) $this->db->query('SELECT COUNT(*) FROM migrations')->fetchColumn();
    }
}