-- AlterTable
ALTER TABLE `orders` ADD COLUMN `contract_accepted_at` DATETIME(3) NULL;

-- CreateTable
CREATE TABLE `contract_parties` (
    `id` VARCHAR(191) NOT NULL,
    `business_name` VARCHAR(100) NOT NULL DEFAULT '',
    `brand_name` VARCHAR(60) NOT NULL DEFAULT '',
    `credit_code` VARCHAR(18) NOT NULL DEFAULT '',
    `operator_name` VARCHAR(30) NOT NULL DEFAULT '',
    `phone` VARCHAR(20) NOT NULL DEFAULT '',
    `address` VARCHAR(200) NOT NULL DEFAULT '',
    `premises_type` VARCHAR(10) NOT NULL DEFAULT 'LEASED',
    `lease_end_date` DATE NULL,
    `standard_lesson_price` INTEGER NOT NULL DEFAULT 0,
    `signature_image` MEDIUMBLOB NULL,
    `signature_sha256` VARCHAR(64) NULL,
    `signature_updated_at` DATETIME(3) NULL,
    `updated_at` DATETIME(3) NOT NULL,

    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `membership_contracts` (
    `id` VARCHAR(191) NOT NULL,
    `contract_no` VARCHAR(32) NOT NULL,
    `user_id` VARCHAR(191) NOT NULL,
    `membership_id` VARCHAR(191) NOT NULL,
    `order_id` VARCHAR(191) NULL,
    `source` ENUM('PURCHASE', 'LEGACY') NOT NULL,
    `status` ENUM('PENDING_SIGN', 'SIGNED', 'VOIDED') NOT NULL DEFAULT 'PENDING_SIGN',
    `require_before_booking` BOOLEAN NOT NULL DEFAULT false,
    `template_version` VARCHAR(32) NOT NULL,
    `terms` JSON NOT NULL,
    `party_name` VARCHAR(30) NULL,
    `party_phone` VARCHAR(20) NULL,
    `document` JSON NULL,
    `content_sha256` VARCHAR(64) NULL,
    `signature_image` MEDIUMBLOB NULL,
    `signature_sha256` VARCHAR(64) NULL,
    `party_b_signature_image` MEDIUMBLOB NULL,
    `party_b_name` VARCHAR(100) NULL,
    `signed_at` DATETIME(3) NULL,
    `signer_ip` VARCHAR(64) NULL,
    `signer_user_agent` VARCHAR(300) NULL,
    `signer_device` VARCHAR(200) NULL,
    `voided_at` DATETIME(3) NULL,
    `voided_by` VARCHAR(191) NULL,
    `void_reason` VARCHAR(200) NULL,
    `created_by` VARCHAR(191) NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updated_at` DATETIME(3) NOT NULL,

    UNIQUE INDEX `membership_contracts_contract_no_key`(`contract_no`),
    UNIQUE INDEX `membership_contracts_order_id_key`(`order_id`),
    INDEX `membership_contracts_user_id_status_idx`(`user_id`, `status`),
    INDEX `membership_contracts_membership_id_status_idx`(`membership_id`, `status`),
    INDEX `membership_contracts_status_created_at_idx`(`status`, `created_at`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `contract_events` (
    `id` VARCHAR(191) NOT NULL,
    `contract_id` VARCHAR(191) NOT NULL,
    `action` VARCHAR(20) NOT NULL,
    `actor_id` VARCHAR(191) NULL,
    `ip` VARCHAR(64) NULL,
    `user_agent` VARCHAR(300) NULL,
    `detail` JSON NULL,
    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

    INDEX `contract_events_contract_id_created_at_idx`(`contract_id`, `created_at`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

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

-- AddForeignKey
ALTER TABLE `membership_contracts` ADD CONSTRAINT `membership_contracts_membership_id_fkey` FOREIGN KEY (`membership_id`) REFERENCES `memberships`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `membership_contracts` ADD CONSTRAINT `membership_contracts_order_id_fkey` FOREIGN KEY (`order_id`) REFERENCES `orders`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `contract_events` ADD CONSTRAINT `contract_events_contract_id_fkey` FOREIGN KEY (`contract_id`) REFERENCES `membership_contracts`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;