import { z } from "zod";
import { eq, and } from "drizzle-orm";
import { dbGlobal } from "drizzle-pkg/lib/db";
import { items } from "drizzle-pkg/lib/schema/collection";
import { getContextUser } from "#server/utils/context";

export default defineWrappedResponseHandler({ auth: "required" }, async (event) => {
  const user = getContextUser(event)!;
  const body = await readBody(event);
  const parsed = z.object({ itemId: z.number() }).safeParse(body);
  if (!parsed.success) return R.error("参数校验失败", parsed.error.issues);

  const { itemId } = parsed.data;
  const [item] = await dbGlobal
    .select()
    .from(items)
    .where(and(eq(items.id, itemId), eq(items.userId, user.id)));

  if (!item) return R.error("收藏不存在", null);

  // Generate summary from content: extract key sentences
  const text = [item.title, item.description, item.content].filter(Boolean).join("。");
  const sentences = text.split(/[。！？\n]/).map(s => s.trim()).filter(s => s.length > 8);

  // Pick the first 2-3 meaningful sentences as summary
  const summary = sentences.slice(0, 3).join("。") + (sentences.length > 3 ? "。" : "");

  // Save to DB
  await dbGlobal
    .update(items)
    .set({ aiSummary: summary })
    .where(and(eq(items.id, itemId), eq(items.userId, user.id)));

  return R.success({ summary });
});