import { and, desc, eq } from "drizzle-orm";
import { messages, topics } from "~~/db/schema";
import type { Message, Topic } from '~~/types'

export default defineEventHandler(async (event) => {
    await protectRoute(event);

    const db = useDrizzle();

    const rows = await db.select().from(topics).where(and(eq(topics.userId, event.context.user.id), eq(topics.id, getRouterParam(event, 'id')!)));

    if (rows.length === 0) {
        throw createError({
            statusCode: 404,
            statusMessage: 'Topic not found'
        });
    }

    const topic = rows[0] as Topic & { messages: Message[] };
    topic.messages = await db.select().from(messages).where(eq(messages.topicId, topic.id)).orderBy(desc(messages.createdAt));

    return topic;
});