CREATE TABLE `math_point` (
	`id` bigint AUTO_INCREMENT NOT NULL,
	`point_id` varchar(191) NOT NULL,
	`module` varchar(20) NOT NULL,
	`module_name` varchar(50) NOT NULL,
	`title` varchar(200) NOT NULL,
	`grade` varchar(30),
	`difficulty` int NOT NULL DEFAULT 1,
	`summary` text,
	`md` text NOT NULL,
	`seq` int NOT NULL,
	`updated_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
	CONSTRAINT `math_point_id` PRIMARY KEY(`id`),
	CONSTRAINT `uq_math_point_id` UNIQUE(`point_id`)
);
--> statement-breakpoint
CREATE TABLE `math_progress` (
	`id` bigint AUTO_INCREMENT NOT NULL,
	`child_user_id` bigint NOT NULL,
	`point_id` varchar(191) NOT NULL,
	`score` int,
	`passed` boolean NOT NULL DEFAULT false,
	`completed_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
	CONSTRAINT `math_progress_id` PRIMARY KEY(`id`),
	CONSTRAINT `uq_math_child_point` UNIQUE(`child_user_id`,`point_id`)
);
--> statement-breakpoint
ALTER TABLE `math_progress` ADD CONSTRAINT `math_progress_child_user_id_user_id_fk` FOREIGN KEY (`child_user_id`) REFERENCES `user`(`id`) ON DELETE cascade ON UPDATE no action;
--> statement-breakpoint
CREATE TABLE `math_weekly_test` (
	`id` bigint AUTO_INCREMENT NOT NULL,
	`child_user_id` bigint NOT NULL,
	`week_key` varchar(12) NOT NULL,
	`score` int,
	`correct` int,
	`total` int,
	`passed` boolean NOT NULL DEFAULT false,
	`questions` text,
	`taken_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
	CONSTRAINT `math_weekly_test_id` PRIMARY KEY(`id`),
	CONSTRAINT `uq_math_weekly_child_week` UNIQUE(`child_user_id`,`week_key`)
);
--> statement-breakpoint
ALTER TABLE `math_weekly_test` ADD CONSTRAINT `math_weekly_test_child_user_id_user_id_fk` FOREIGN KEY (`child_user_id`) REFERENCES `user`(`id`) ON DELETE cascade ON UPDATE no action;
--> statement-breakpoint
CREATE TABLE `exam_paper` (
	`id` bigint AUTO_INCREMENT NOT NULL,
	`paper_id` varchar(191) NOT NULL,
	`subject` varchar(20) NOT NULL DEFAULT 'math',
	`grade` varchar(20) NOT NULL,
	`semester` varchar(10) NOT NULL,
	`month` int NOT NULL,
	`exam_type` varchar(20) NOT NULL,
	`title` varchar(300) NOT NULL,
	`region` varchar(60),
	`year` int,
	`duration` int,
	`full_score` int,
	`source_url` varchar(500),
	`summary` text,
	`questions` text NOT NULL,
	`seq` int NOT NULL,
	`created_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
	CONSTRAINT `exam_paper_id` PRIMARY KEY(`id`),
	CONSTRAINT `uq_exam_paper_id` UNIQUE(`paper_id`)
);
--> statement-breakpoint
CREATE INDEX `idx_exam_paper_scope` ON `exam_paper` (`subject`,`grade`,`semester`,`month`);
--> statement-breakpoint
CREATE TABLE `exam_record` (
	`id` bigint AUTO_INCREMENT NOT NULL,
	`child_user_id` bigint NOT NULL,
	`paper_id` varchar(191) NOT NULL,
	`score` int,
	`correct` int,
	`total` int,
	`passed` boolean NOT NULL DEFAULT false,
	`answers` text,
	`taken_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
	CONSTRAINT `exam_record_id` PRIMARY KEY(`id`),
	CONSTRAINT `uq_exam_child_paper` UNIQUE(`child_user_id`,`paper_id`)
);
--> statement-breakpoint
ALTER TABLE `exam_record` ADD CONSTRAINT `exam_record_child_user_id_user_id_fk` FOREIGN KEY (`child_user_id`) REFERENCES `user`(`id`) ON DELETE cascade ON UPDATE no action;