<?php
require_once __DIR__ . '/config.php';

try {
    // Connect without specifying a database to create it if it doesn't exist
    $pdo = new PDO('mysql:host='.DB_HOST, DB_USER, DB_PASS, [
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    ]);
    $pdo->exec('CREATE DATABASE IF NOT EXISTS '.DB_NAME);
    echo "Database ".DB_NAME." created or already exists.\n";
} catch (PDOException $e) {
    // Suppress error if DB exists but user lacks CREATE DB permissions
}

// Now, connect to the specific database
$pdo = db();

// 1. Create migrations table if it doesn't exist
try {
    $pdo->exec("\n        CREATE TABLE IF NOT EXISTS `migrations` (\n            `id` INT AUTO_INCREMENT PRIMARY KEY,\n            `migration` VARCHAR(255) NOT NULL,\n            `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n        )\n    ");
} catch (PDOException $e) {
    echo "Error creating migrations table: " . $e->getMessage() . "\n";
    exit(1);
}

// 2. Get all migrations that have been run
$stmt = $pdo->query("SELECT `migration` FROM `migrations`");
$runMigrations = $stmt->fetchAll(PDO::FETCH_COLUMN);

// 3. Get all available migration files
$migrationsDir = __DIR__ . '/migrations';
$files = glob($migrationsDir . '/*.sql');
sort($files);

// 4. Run migrations that have not been run yet
foreach ($files as $file) {
    $migrationName = basename($file);
    if (!in_array($migrationName, $runMigrations)) {
        echo "Applying migration: " . $migrationName . "\n";
        $sql = file_get_contents($file);
        try {
            $pdo->exec($sql);

            // Add the migration to the migrations table
            $insertStmt = $pdo->prepare("INSERT INTO `migrations` (`migration`) VALUES (?)");
            $insertStmt->execute([$migrationName]);

            echo "Success\n";
        } catch (PDOException $e) {
            echo "Error applying migration: " . $e->getMessage() . "\n";
            // Don't exit, allow other migrations to run
        }
    }
}

echo "Migration check complete.\n";