-- Create surveys table
CREATE TABLE IF NOT EXISTS `surveys` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `title` varchar(255) NOT NULL,
  `description` text DEFAULT NULL,
  `created_at` timestamp NOT NULL DEFAULT current_timestamp(),
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Create questions table
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','textarea','radio','checkbox','select') NOT NULL,
  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;

-- Create question_options table
CREATE TABLE IF NOT EXISTS `question_options` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `question_id` int(11) NOT NULL,
  `option_text` varchar(255) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `question_id` (`question_id`),
  CONSTRAINT `question_options_ibfk_1` FOREIGN KEY (`question_id`) REFERENCES `questions` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;