-- CreateTable
CREATE TABLE `users` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `openid` VARCHAR(64) NOT NULL,
    `nickname` VARCHAR(32) NULL,
    `headicon_id` INTEGER UNSIGNED NOT NULL DEFAULT 0,
    `wx_session_key` VARCHAR(255) NULL,
    `session_key_updated_at` DATETIME(3) NULL,
    `status` TINYINT NOT NULL DEFAULT 1,
    `registered_at` DATETIME(3) NOT NULL,
    `last_login_at` DATETIME(3) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `users_openid_key`(`openid`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `courses` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `code` VARCHAR(64) NOT NULL,
    `title` VARCHAR(128) NOT NULL,
    `intro` VARCHAR(255) NULL,
    `cover_image` VARCHAR(255) NULL,
    `price_fen` INTEGER UNSIGNED NOT NULL DEFAULT 0,
    `status` TINYINT NOT NULL DEFAULT 1,
    `sort_order` INTEGER NOT NULL DEFAULT 0,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `courses_code_key`(`code`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `lessons` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `course_id` INTEGER UNSIGNED NOT NULL,
    `play_id` VARCHAR(64) NOT NULL,
    `chapter_id` VARCHAR(64) NOT NULL,
    `chapter_title` VARCHAR(255) NULL,
    `lesson_title` VARCHAR(255) NULL,
    `duration` VARCHAR(16) NULL,
    `published_at` DATETIME(3) NULL,
    `cover_image` VARCHAR(255) NULL,
    `sort_order` INTEGER NOT NULL DEFAULT 0,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `lessons_course_id_sort_order_idx`(`course_id`, `sort_order`),
    UNIQUE INDEX `lessons_course_id_chapter_id_play_id_key`(`course_id`, `chapter_id`, `play_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `free_lessons` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `series_no` INTEGER NOT NULL,
    `sort_order` INTEGER NOT NULL DEFAULT 0,
    `course_name` VARCHAR(255) NOT NULL,
    `video_title` VARCHAR(255) NULL,
    `intro` VARCHAR(255) NULL,
    `publisher` VARCHAR(255) NULL,
    `published_at` DATETIME(3) NULL,
    `duration` VARCHAR(16) NULL,
    `video_m3u8` VARCHAR(255) NULL,
    `cover_image` VARCHAR(255) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `free_lessons_series_no_sort_order_idx`(`series_no`, `sort_order`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `home_courses` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `course_name` VARCHAR(255) NOT NULL,
    `intro` VARCHAR(255) NULL,
    `published_at` DATETIME(3) NULL,
    `cover_image` VARCHAR(255) NULL,
    `content` LONGTEXT NULL,
    `course_id` INTEGER UNSIGNED NULL,
    `sort_order` INTEGER NOT NULL DEFAULT 0,
    `status` TINYINT NOT NULL DEFAULT 1,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    INDEX `home_courses_status_sort_order_idx`(`status`, `sort_order`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `home_free_courses` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `series_no` INTEGER NOT NULL,
    `course_name` VARCHAR(255) NOT NULL,
    `intro` VARCHAR(255) NULL,
    `published_at` DATETIME(3) NULL,
    `cover_image` VARCHAR(255) NULL,
    `sort_order` INTEGER NOT NULL DEFAULT 0,
    `status` TINYINT NOT NULL DEFAULT 1,

    INDEX `home_free_courses_status_sort_order_idx`(`status`, `sort_order`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `banners` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `filename` VARCHAR(255) NOT NULL,
    `sort_order` INTEGER NOT NULL DEFAULT 0,
    `status` TINYINT NOT NULL DEFAULT 1,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    INDEX `banners_status_sort_order_idx`(`status`, `sort_order`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `articles` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `legacy_page_id` VARCHAR(32) NULL,
    `title` VARCHAR(255) NOT NULL,
    `intro` VARCHAR(255) NULL,
    `publisher` VARCHAR(255) NULL,
    `published_at` DATETIME(3) NULL,
    `content` LONGTEXT NULL,
    `sort_order` INTEGER NOT NULL DEFAULT 0,
    `status` TINYINT NOT NULL DEFAULT 1,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    INDEX `articles_status_published_at_idx`(`status`, `published_at`),
    INDEX `articles_legacy_page_id_idx`(`legacy_page_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `course_tips` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `tip_key` INTEGER NOT NULL,
    `content` TEXT NULL,
    `title` TINYTEXT NULL,

    UNIQUE INDEX `course_tips_tip_key_key`(`tip_key`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `settings` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `key` VARCHAR(64) NOT NULL,
    `value` VARCHAR(255) NULL,
    `remark` VARCHAR(255) NULL,

    UNIQUE INDEX `settings_key_key`(`key`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `entitlements` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `user_id` INTEGER UNSIGNED NOT NULL,
    `course_id` INTEGER UNSIGNED NOT NULL,
    `source` TINYINT NOT NULL,
    `ref_id` INTEGER UNSIGNED NULL,
    `granted_at` DATETIME(3) NOT NULL,
    `expire_at` DATETIME(3) NULL,
    `note` VARCHAR(255) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `entitlements_course_id_idx`(`course_id`),
    UNIQUE INDEX `entitlements_user_id_course_id_key`(`user_id`, `course_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `orders` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `out_trade_no` VARCHAR(32) NOT NULL,
    `user_id` INTEGER UNSIGNED NOT NULL,
    `course_id` INTEGER UNSIGNED NOT NULL,
    `product_id` VARCHAR(64) NOT NULL,
    `quantity` INTEGER UNSIGNED NOT NULL DEFAULT 1,
    `amount_fen` INTEGER UNSIGNED NOT NULL,
    `status` TINYINT NOT NULL,
    `env` TINYINT NOT NULL DEFAULT 0,
    `wx_order_id` VARCHAR(64) NULL,
    `attach` VARCHAR(255) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `paid_at` DATETIME(3) NULL,
    `delivered_at` DATETIME(3) NULL,
    `refunded_at` DATETIME(3) NULL,

    UNIQUE INDEX `orders_out_trade_no_key`(`out_trade_no`),
    UNIQUE INDEX `orders_wx_order_id_key`(`wx_order_id`),
    INDEX `orders_user_id_created_at_idx`(`user_id`, `created_at`),
    INDEX `orders_status_created_at_idx`(`status`, `created_at`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `payment_notify_log` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `wx_order_id` VARCHAR(64) NULL,
    `out_trade_no` VARCHAR(32) NULL,
    `event` VARCHAR(64) NULL,
    `raw_body` MEDIUMTEXT NULL,
    `processed` TINYINT NOT NULL DEFAULT 0,
    `err_msg` VARCHAR(255) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `payment_notify_log_wx_order_id_idx`(`wx_order_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `products` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `course_id` INTEGER UNSIGNED NOT NULL,
    `wx_product_id` VARCHAR(64) NOT NULL,
    `name` VARCHAR(128) NOT NULL,
    `price_fen` INTEGER UNSIGNED NOT NULL,
    `status` TINYINT NOT NULL DEFAULT 1,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `products_wx_product_id_key`(`wx_product_id`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `admin_users` (
    `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    `username` VARCHAR(64) NOT NULL,
    `password_hash` VARCHAR(255) NOT NULL,
    `display_name` VARCHAR(64) NULL,
    `role` TINYINT NOT NULL DEFAULT 2,
    `totp_secret` VARCHAR(64) NULL,
    `status` TINYINT NOT NULL DEFAULT 1,
    `last_login_at` DATETIME(3) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `admin_users_username_key`(`username`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- AddForeignKey
ALTER TABLE `lessons` ADD CONSTRAINT `lessons_course_id_fkey` FOREIGN KEY (`course_id`) REFERENCES `courses`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `home_courses` ADD CONSTRAINT `home_courses_course_id_fkey` FOREIGN KEY (`course_id`) REFERENCES `courses`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `entitlements` ADD CONSTRAINT `entitlements_user_id_fkey` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `entitlements` ADD CONSTRAINT `entitlements_course_id_fkey` FOREIGN KEY (`course_id`) REFERENCES `courses`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `orders` ADD CONSTRAINT `orders_user_id_fkey` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `orders` ADD CONSTRAINT `orders_course_id_fkey` FOREIGN KEY (`course_id`) REFERENCES `courses`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `products` ADD CONSTRAINT `products_course_id_fkey` FOREIGN KEY (`course_id`) REFERENCES `courses`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;