CREATE TABLE `attachments` (
	`id` int AUTO_INCREMENT NOT NULL,
	`conversationId` int NOT NULL,
	`messageId` int NOT NULL,
	`fileName` varchar(255) NOT NULL,
	`mimeType` varchar(160) NOT NULL,
	`fileSize` int NOT NULL,
	`storageKey` varchar(512) NOT NULL,
	`storageUrl` text NOT NULL,
	`createdAt` timestamp NOT NULL DEFAULT (now()),
	CONSTRAINT `attachments_id` PRIMARY KEY(`id`)
);
--> statement-breakpoint
CREATE TABLE `conversations` (
	`id` int AUTO_INCREMENT NOT NULL,
	`userId` int NOT NULL,
	`title` varchar(160) NOT NULL DEFAULT 'New conversation',
	`createdAt` timestamp NOT NULL DEFAULT (now()),
	`updatedAt` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
	CONSTRAINT `conversations_id` PRIMARY KEY(`id`)
);
--> statement-breakpoint
CREATE TABLE `messages` (
	`id` int AUTO_INCREMENT NOT NULL,
	`conversationId` int NOT NULL,
	`role` enum('user','assistant') NOT NULL,
	`content` text NOT NULL,
	`createdAt` timestamp NOT NULL DEFAULT (now()),
	CONSTRAINT `messages_id` PRIMARY KEY(`id`)
);