<?php

declare(strict_types=1);

namespace Monitor\Api\Tests\Db;

use Monitor\Api\Db\Database;
use PHPUnit\Framework\TestCase;

final class DatabaseTest extends TestCase
{
    public function testMigrateCreatesAllTables(): void
    {
        $db = Database::inMemory();

        $stmt = $db->pdo()->query("SELECT name FROM sqlite_master WHERE type = 'table'");
        $tables = array_column($stmt->fetchAll(), 'name');

        foreach (['agents', 'tickets', 'events', 'systems', 'kpis', 'kpi_values'] as $expected) {
            self::assertContains($expected, $tables);
        }
    }

    public function testMigrateIsIdempotent(): void
    {
        $db = Database::inMemory();

        // Zweiter Aufruf darf nicht fehlschlagen (CREATE TABLE IF NOT EXISTS).
        $db->migrate();

        self::assertTrue(true);
    }

    public function testNowReturnsIso8601Utc(): void
    {
        $db = Database::inMemory();

        self::assertMatchesRegularExpression('/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z$/', $db->now());
    }
}