require("dotenv").config(); // load .env
const express = require("express");
const admin = require("firebase-admin");
const cors = require("cors");

const app = express();
app.use(cors());
app.use(express.json());

// Parsing JSON dari env
const serviceAccount = JSON.parse(process.env.FIREBASE_CONFIG);

// Inisialisasi Firebase Admin
admin.initializeApp({
  credential: admin.credential.cert(serviceAccount)
});

const db = admin.firestore();

// Format tanggal
function formatTanggalUTC(timeString) {
  const date = new Date(timeString);
  const tgl = String(date.getUTCDate()).padStart(2, "0");
  const bln = String(date.getUTCMonth() + 1).padStart(2, "0");
  const thn = date.getUTCFullYear();
  const jam = String(date.getUTCHours()).padStart(2, "0");
  const menit = String(date.getUTCMinutes()).padStart(2, "0");
  return `${tgl}/${bln}/${thn} . ${jam}:${menit}`;
}

// Endpoint kirim data
app.post("/api/kirim-data", async (req, res) => {
  try {
    const { uid, activity, time } = req.body;
    if (!uid || !activity || !time) {
      return res.status(400).json({ success: false, message: "Data tidak lengkap" });
    }

    const formattedTime = formatTanggalUTC(time);

    await db.collection("history_parkir").add({
      uid,
      activity,
      time: formattedTime
    });

    return res.status(200).json({ success: true, message: "Data berhasil dikirim ke Firestore" });
  } catch (error) {
    console.error(error);
    res.status(500).json({ success: false, message: error.message });
  }
});

const PORT = 3000;
app.listen(PORT, () => {
  console.log(`🚀 Server is running on port ${PORT}`);
});