<?php
// db/migrations/002_create_comments_table.php

if (function_exists('migrate_002_create_comments_table')) {
    return;
}

function migrate_002_create_comments_table() {
    require_once __DIR__ . '/../config.php';

    try {
        $pdo = db();
        $sql = "
        CREATE TABLE IF NOT EXISTS comments (
            id INT AUTO_INCREMENT PRIMARY KEY,
            user_id INT NOT NULL,
            comment TEXT NOT NULL,
            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
            FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
        ";
        $pdo->exec($sql);
        echo "Migration 002: 'comments' table created or already exists.\n";
    } catch (PDOException $e) {
        die("Migration 002 failed: " . $e->getMessage() . "\n");
    }
}