-- no need to migrate existing data yet
drop table if exists Chapters;
drop table if exists Tags;
drop table if exists Notes;

CREATE TABLE `Notes`
(
    `uuid`        binary(16) PRIMARY KEY,
    `title`       varchar(50) NOT NULL,
    `user_id`     int         NOT NULL,
    `updated_at` datetime
);

ALTER TABLE `Notes`
    ADD FOREIGN KEY (`user_id`) REFERENCES `Users` (`id`) ON DELETE CASCADE ON UPDATE RESTRICT;

CREATE TABLE `Tags`
(
    `id`        int PRIMARY KEY AUTO_INCREMENT,
    `name`      varchar(50) NOT NULL,
    `note_uuid` binary(16)  NOT NULL
);

ALTER TABLE `Tags`
    ADD FOREIGN KEY (`note_uuid`) REFERENCES `Notes` (`uuid`) ON DELETE RESTRICT ON UPDATE RESTRICT;

CREATE TABLE `Chapters`
(
    `id`        int PRIMARY KEY AUTO_INCREMENT,
    `number`    int        NOT NULL,
    `content`   text       NOT NULL,
    `note_uuid` binary(16) NOT NULL
);

ALTER TABLE `Chapters`
    ADD FOREIGN KEY (`note_uuid`) REFERENCES `Notes` (`uuid`) ON DELETE RESTRICT ON UPDATE RESTRICT;