-- ساختار پایگاه داده سامانه نظرسنجی بیماران
CREATE TABLE IF NOT EXISTS `users` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(50) NOT NULL UNIQUE,
  `password` varchar(255) NOT NULL,
  `full_name` varchar(100) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_persian_ci;

CREATE TABLE IF NOT EXISTS `surveys` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `title` varchar(255) NOT NULL,
  `description` text DEFAULT NULL,
  `status` enum('active','inactive') DEFAULT 'active',
  `created_at` timestamp NOT NULL DEFAULT current_timestamp(),
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_persian_ci;

CREATE TABLE IF NOT EXISTS `questions` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `survey_id` int(11) NOT NULL,
  `question_text` text NOT NULL,
  `question_type` enum('text','radio','checkbox','boolean') NOT NULL,
  `options` text DEFAULT NULL,
  `sort_order` int(11) DEFAULT 0,
  PRIMARY KEY (`id`),
  KEY `survey_id` (`survey_id`),
  CONSTRAINT `questions_ibfk_1` FOREIGN KEY (`survey_id`) REFERENCES `surveys` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_persian_ci;

CREATE TABLE IF NOT EXISTS `patients` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(100) NOT NULL,
  `mobile` varchar(15) NOT NULL,
  `token` varchar(64) NOT NULL UNIQUE,
  `created_at` timestamp NOT NULL DEFAULT current_timestamp(),
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_persian_ci;

CREATE TABLE IF NOT EXISTS `answers` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `patient_id` int(11) NOT NULL,
  `survey_id` int(11) NOT NULL,
  `question_id` int(11) NOT NULL,
  `answer_value` text DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `patient_id` (`patient_id`),
  KEY `question_id` (`question_id`),
  CONSTRAINT `answers_ibfk_1` FOREIGN KEY (`patient_id`) REFERENCES `patients` (`id`) ON DELETE CASCADE,
  CONSTRAINT `answers_ibfk_2` FOREIGN KEY (`question_id`) REFERENCES `questions` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_persian_ci;

-- ایجاد کاربر ادمین پیش‌فرض با پسورد هش شده admin123
INSERT INTO `users` (`id`, `username`, `password`, `full_name`) VALUES
(1, 'admin', '$2y$10$UoZ7fXh4u6hW/k7BkybC0eK8g3j2r8/JshE/k8vMep7uD21FmX2yO', 'مدیریت بیمارستان')
ON DUPLICATE KEY UPDATE `id`=`id`;