-- This migration cleans up previous attempts and creates the enrollments table correctly.
DROP TABLE IF EXISTS `user_skills`;
DROP TABLE IF EXISTS `enrollments`;

CREATE TABLE `enrollments` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_id` int(11) unsigned NOT NULL,
  `skill_id` int(11) NOT NULL,
  `progress` int(11) NOT NULL DEFAULT 0,
  `date_enrolled` DATETIME NOT NULL DEFAULT current_timestamp(),
  PRIMARY KEY (`id`),
  KEY `user_id` (`user_id`),
  KEY `skill_id` (`skill_id`),
  CONSTRAINT `enrollments_ibfk_1` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE,
  CONSTRAINT `enrollments_ibfk_2` FOREIGN KEY (`skill_id`) REFERENCES `skills` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;