-- Create users table to store customer information
CREATE TABLE IF NOT EXISTS `users` (
  `id` INT AUTO_INCREMENT PRIMARY KEY,
  `first_name` VARCHAR(100) NOT NULL,
  `last_name` VARCHAR(100) NOT NULL,
  `email` VARCHAR(150) NOT NULL UNIQUE,
  `phone_number` VARCHAR(20) DEFAULT NULL UNIQUE,
  `password` VARCHAR(255) NOT NULL,
  `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;