import 'package:get/get.dart';
import 'package:firebase_database/firebase_database.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:intl/intl.dart';
import '../../../routes/app_pages.dart';
import 'package:flutter/material.dart';

class HomeController extends GetxController {
  final db = FirebaseDatabase.instance.ref();
  final historyList = <Map<String, dynamic>>[].obs;

  var feSebelum = 0.0.obs;
  var feSesudah = 0.0.obs;
  var pompaOn = false.obs;

  @override
  void onInit() {
    super.onInit();
    _setupListeners();
    ambilHistoryTerbaru();
  }

  void _setupListeners() {
    // Listener untuk kadar Fe dari Firebase Realtime Database
    db.child("kadar_fe").onValue.listen((event) {
      final data = Map<String, dynamic>.from(event.snapshot.value as Map);
      double sebelum = double.tryParse(data['sebelum'].toString()) ?? 0.0;
      double sesudah = double.tryParse(data['sesudah'].toString()) ?? 0.0;

      // Format ke 2 angka di belakang koma
      feSebelum.value = double.parse(sebelum.toStringAsFixed(2));
      feSesudah.value = double.parse(sesudah.toStringAsFixed(2));
    });

    // Listener untuk status pompa
    db.child("relay/pompa").onValue.listen((event) {
      pompaOn.value = event.snapshot.value == true;
    });
  }

  // Mengambil 3 history terbaru dari Firestore
  void ambilHistoryTerbaru() async {
    final snapshot = await FirebaseFirestore.instance
        .collection("history")
        .orderBy("timestamp", descending: true)
        .limit(3)
        .get();

    historyList.assignAll(snapshot.docs.map((doc) {
      final data = doc.data();
      final time = data['timestamp'];
      if (time is String) {
        data['formatted_time'] = time;
      } else if (time is Timestamp) {
        data['formatted_time'] =
            DateFormat("dd-MM-yyyy HH:mm").format(time.toDate());
      } else {
        data['formatted_time'] = "Tidak diketahui";
      }
      return data;
    }).toList());
  }

  // Toggle status pompa ke Realtime Database
  void togglePompa() {
    final newValue = !pompaOn.value;
    db.child("relay/pompa").set(newValue);
    pompaOn.value = newValue;
  }

  // Navigasi ke halaman info dan histori
  void keInfo() => Get.toNamed(Routes.INFO);
  void keHistory() => Get.toNamed(Routes.HISTORY);

  // Penilaian hasil deteksi berdasarkan kadar Fe
  String get hasilDeteksi {
    final fe = feSesudah.value;
    if (fe <= 0.3) {
      return "Bersih";
    } else if (fe > 0.3 && fe <= 1.0) {
      return "Perlu Penyaringan";
    } else {
      return "Keruh (Tercemar)";
    }
  }

  // Simpan data ke Firestore
  Future<void> simpanKeFirestore() async {
    try {
      final now = DateTime.now();
      final timestamp = DateFormat("dd-MM-yyyy HH:mm").format(now);

      // Pastikan nilai disimpan dengan 2 digit desimal
      await FirebaseFirestore.instance.collection("history").add({
        "fe_sebelum": double.parse(feSebelum.value.toStringAsFixed(2)),
        "fe_sesudah": double.parse(feSesudah.value.toStringAsFixed(2)),
        "result": hasilDeteksi,
        "timestamp": timestamp,
      });

      Get.snackbar(
        "Berhasil",
        "Data berhasil disimpan ke histori",
        snackPosition: SnackPosition.TOP,
        backgroundColor: const Color(0xFF1E3A8A),
        colorText: Colors.white,
      );

      ambilHistoryTerbaru(); // Refresh list setelah simpan
    } catch (e) {
      Get.snackbar(
        "Gagal",
        "Terjadi kesalahan saat menyimpan data",
        snackPosition: SnackPosition.TOP,
        backgroundColor: Colors.red,
        colorText: Colors.white,
      );
      debugPrint("Error simpan: $e");
    }
  }
}