import { db } from "../../../db/index";
import { topics, userProgress } from "../../../db/schema";
import { eq, and } from "drizzle-orm";
import { randomUUID } from "crypto";

export default defineEventHandler(async (event) => {
  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" });

  const body = await readBody(event);
  const { lessonComplete, quizScore, tookBranches, branchCount } = body ?? {};

  const existing = await db.query.userProgress.findFirst({
    where: and(
      eq(userProgress.topicId, id),
      eq(userProgress.courseId, topic.courseId)
    ),
  });

  if (existing) {
    await db
      .update(userProgress)
      .set({
        lessonComplete: lessonComplete ?? existing.lessonComplete,
        quizScore: quizScore ?? existing.quizScore,
        tookBranches: tookBranches ?? existing.tookBranches,
        branchCount: branchCount ?? existing.branchCount,
        updatedAt: new Date().toISOString(),
      })
      .where(eq(userProgress.id, existing.id));
  } else {
    await db.insert(userProgress).values({
      id: randomUUID(),
      courseId: topic.courseId,
      topicId: id,
      lessonComplete: lessonComplete ?? false,
      quizScore: quizScore ?? null,
      tookBranches: tookBranches ?? false,
      branchCount: branchCount ?? 0,
    });
  }

  return { ok: true };
});