#!/usr/bin/env php
<?php
/**
 * Run pending migrations on the production database.
 *
 * Usage: php app/migrations/run.php [DB_PATH]
 *
 * If no DB_PATH is given, defaults to storage/xamxam.db.
 *
 * Each migration in migrations/pending/ is applied in alphabetical order.
 * After success, the file is moved to migrations/applied/.
 */

$root = dirname(__DIR__);
$dbPath = $argv[1] ?? ($root . '/storage/xamxam.db');

if (!file_exists($dbPath)) {
    die("Database not found: $dbPath\n");
}

$pdo = new PDO('sqlite:' . $dbPath);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

// Create migrations tracking table
$pdo->exec("
    CREATE TABLE IF NOT EXISTS _migrations (
        name TEXT PRIMARY KEY,
        applied_at DATETIME DEFAULT CURRENT_TIMESTAMP
    )
");

$applied = $pdo->query("SELECT name FROM _migrations")->fetchAll(PDO::FETCH_COLUMN);

$pendingDir = $root . '/migrations/pending';
$appliedDir = $root . '/migrations/applied';

if (!is_dir($pendingDir)) {
    echo "No pending migrations directory.\n";
    exit(0);
}

if (!is_dir($appliedDir)) {
    mkdir($appliedDir, 0755, true);
}

$files = glob($pendingDir . '/*.sql');
sort($files);

if (empty($files)) {
    echo "No pending migration files.\n";
    exit(0);
}

$count = 0;
foreach ($files as $file) {
    $name = basename($file);

    if (in_array($name, $applied, true)) {
        echo "Skip (already applied): $name\n";
        continue;
    }

    echo "Applying: $name\n";
    $sql = file_get_contents($file);

    try {
        $pdo->exec($sql);
        $pdo->prepare("INSERT INTO _migrations (name) VALUES (?)")->execute([$name]);
        rename($file, $appliedDir . '/' . $name);
        $count++;
    } catch (PDOException $e) {
        $msg = $e->getMessage();
        // SQLite: skip if column already exists
        if (stripos($msg, 'duplicate column name') !== false) {
            echo "  Already exists (skipping): $name\n";
            $pdo->prepare("INSERT OR REPLACE INTO _migrations (name) VALUES (?)")->execute([$name]);
            rename($file, $appliedDir . '/' . $name);
            continue;
        }
        throw $e;
    }
}

echo "$count migration(s) applied.\n";