import { db } from "../../../../db/index";
import { topics, lessons } from "../../../../db/schema";
import { eq } from "drizzle-orm";
import { generateLesson } from "../../../../utils/generateLesson";
import { verifyLicenseKey } from "../../../../utils/license";

export default defineEventHandler(async (event) => {
  const key = getHeader(event, "x-license-key") ?? "";
  if (!verifyLicenseKey(key)) {
    throw createError({ statusCode: 401, message: "Unauthorized" });
  }

  const id = getRouterParam(event, "id")!;

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

  // wipe existing lesson
  await db.delete(lessons).where(eq(lessons.topicId, id));

  // reset topic status so generateLesson doesnt bail
  await db.update(topics).set({ status: "pending" }).where(eq(topics.id, id));

  try {
    await generateLesson(id);
    return { status: "ready" };
  } catch (err: any) {
    console.error(`[dev/regenerate-lesson] topic ${id}: ${err?.message ?? err}`);
    return { status: "error" };
  }
});