<?php
// db/migrations/001_create_users_table.php

if (function_exists('migrate_001_create_users_table')) {
    return;
}

function migrate_001_create_users_table() {
    require_once __DIR__ . '/../config.php';

    try {
        $pdo = db();
        $sql = "
        CREATE TABLE IF NOT EXISTS users (
            id INT AUTO_INCREMENT PRIMARY KEY,
            username VARCHAR(50) NOT NULL UNIQUE,
            password VARCHAR(255) NOT NULL,
            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
        ";
        $pdo->exec($sql);
        echo "Migration 001: 'users' table created or already exists.\n";
    } catch (PDOException $e) {
        die("Migration 001 failed: " . $e->getMessage() . "\n");
    }
}