import { auth } from "@clerk/nextjs/server";
import { NextRequest, NextResponse } from "next/server";
import { getDatabase } from "@/lib/database";
import { ensureUserSynced } from "@/lib/sync-user";
import log from "@/lib/logger";
import { checkInSchema } from "@/lib/validation/schemas";
import {
  validateRequestBody,
  validationErrorResponse,
} from "@/lib/validation/helpers";

export async function POST(req: NextRequest) {
  try {
    const { userId } = await auth();
    if (!userId) return new NextResponse("Unauthorized", { status: 401 });

    const db = await getDatabase();

    // Ensure user exists in DB (sync from Clerk if needed)
    await ensureUserSynced(userId, db);

    // Check if already checked in
    const activeCheckIn = await db.getActiveCheckIn(userId);
    if (activeCheckIn) {
      return new NextResponse("Already checked in", { status: 400 });
    }

    const body = await req.json();
    const { type = "gym", notes } = body;

    const attendance = await db.checkIn(userId, type, notes);
    return NextResponse.json(attendance);
  } catch (error) {
    log.error("Failed to check in", error);
    return new NextResponse("Internal Server Error", { status: 500 });
  }
}