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

try {
    $pdo = db();

    // Check if the column already exists
    $stmt = $pdo->query("SHOW COLUMNS FROM service_requests LIKE 'engineer_id'");
    if ($stmt->rowCount() == 0) {
        $pdo->exec("ALTER TABLE service_requests ADD COLUMN engineer_id INT NULL");
        echo "Column 'engineer_id' added to 'service_requests' table successfully." . PHP_EOL;
    } else {
        echo "Column 'engineer_id' already exists in 'service_requests' table." . PHP_EOL;
    }

} catch (PDOException $e) {
    die("DB ERROR: " . $e->getMessage());
}