import { db } from "../../../db/index";
import { courses } from "../../../db/schema";
import { eq } from "drizzle-orm";
import { generateCourseInBackground } from "../../../utils/generateCourse";

export default defineEventHandler(async (event) => {
  const id = getRouterParam(event, "id")!;

  const course = await db.query.courses.findFirst({ where: eq(courses.id, id) });
  if (!course) throw createError({ statusCode: 404, message: "Course not found" });

  await db.update(courses).set({ status: "processing", stage: "parsing_pdfs" }).where(eq(courses.id, id));

  // fire and forget — response returns immediately
  console.log(`[revisione:${id.slice(0, 8)}] background generation triggered for "${course.title}"`);
  generateCourseInBackground(id).catch(() => {});

  setResponseStatus(event, 202);
  return { message: "Course generation started" };
});