import { NextRequest, NextResponse } from "next/server";
import { getPocketBaseConfig } from "@/config/services.config";
import { getAdminToken } from "@/app/lib/pocketbase/admin";

import { COOKIE_NAME } from "@/app/lib/auth-cookie";

function getUserIdFromCookie(request: NextRequest): string | null {
  const cookie = request.cookies.get(COOKIE_NAME)?.value;
  if (!cookie) return null;
  try {
    const payload = JSON.parse(Buffer.from(cookie, "base64url").toString("utf-8"));
    return payload?.userId ?? null;
  } catch {
    return null;
  }
}

const REQUIRED_FIELDS = ["nickname", "occupation", "reason", "single", "wechatId", "gender", "phone"];

function isRecordComplete(record: Record<string, unknown>): boolean {
  return REQUIRED_FIELDS.every((key) => {
    const v = record[key];
    return v != null && String(v).trim() !== "";
  });
}

export async function GET(request: NextRequest) {
  try {
    const userId = getUserIdFromCookie(request);
    if (!userId) {
      return NextResponse.json({ ok: true, hasRecord: false, isComplete: false });
    }

    const token = await getAdminToken();
    if (!token) {
      return NextResponse.json({ ok: true, hasRecord: false, isComplete: false });
    }

    const pb = getPocketBaseConfig();
    const base = pb.url.replace(/\/$/, "");
    const filter = `user_id="${userId}"`;
    const res = await fetch(
      `${base}/api/collections/${pb.joinCollection}/records?filter=${encodeURIComponent(filter)}&perPage=1`,
      { headers: { Authorization: `Bearer ${token}` }, cache: "no-store" }
    );

    if (!res.ok) {
      return NextResponse.json({ ok: true, hasRecord: false, isComplete: false });
    }

    const data = await res.json().catch(() => ({}));
    const record = (data?.items ?? [])[0];
    if (!record) {
      return NextResponse.json({ ok: true, hasRecord: false, isComplete: false });
    }

    const isComplete = isRecordComplete(record as Record<string, unknown>);
    return NextResponse.json({ ok: true, hasRecord: true, isComplete });
  } catch {
    return NextResponse.json({ ok: true, hasRecord: false, isComplete: false });
  }
}