import 'dart:async';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:intaleq_maps/intaleq_maps.dart';
import 'package:siro_driver/constant/links.dart';
import 'package:siro_driver/controller/functions/crud.dart';
import 'package:siro_driver/controller/functions/tts.dart';
import 'package:siro_driver/views/widgets/error_snakbar.dart';

class DestinationController extends GetxController {
  bool isLoading = false;
  bool isSelectingDestinationOnMap = false;

  // Active destination details
  LatLng? activeLatLng;
  String activeName = "";

  final TextEditingController searchController = TextEditingController();
  List<dynamic> placesSuggestions = [];
  Timer? _debounce;

  @override
  void onInit() {
    super.onInit();
    fetchActiveDestination();
  }

  @override
  void onClose() {
    searchController.dispose();
    _debounce?.cancel();
    super.onClose();
  }

  // --- 1. Get current active destination from backend ---
  Future<void> fetchActiveDestination() async {
    isLoading = true;
    update();

    try {
      final response = await CRUD().post(
        link: AppLink.saveDriverDestination,
        payload: {'action': 'get'},
      );

      if (response != null && response is Map && response['status'] == 'success') {
        final data = response['message'];
        if (data != null) {
          final lat = double.tryParse(data['target_latitude']?.toString() ?? '0') ?? 0.0;
          final lng = double.tryParse(data['target_longitude']?.toString() ?? '0') ?? 0.0;
          activeLatLng = LatLng(lat, lng);
          activeName = data['destination_name']?.toString() ?? "";
        } else {
          activeLatLng = null;
          activeName = "";
        }
      }
    } catch (e) {
      print("[DestinationController] fetchActiveDestination error: $e");
    } finally {
      isLoading = false;
      update();
    }
  }

  // --- 2. Autocomplete search suggestions ---
  void onSearchChanged(String query) {
    if (_debounce?.isActive ?? false) _debounce!.cancel();
    _debounce = Timer(const Duration(milliseconds: 500), () => getPlacesSuggestions(query));
  }

  Future<void> getPlacesSuggestions(String query) async {
    if (query.trim().length < 3) {
      placesSuggestions = [];
      update();
      return;
    }

    try {
      final url = '${AppLink.mapSaasPlaces}?q=${Uri.encodeComponent(query)}';
      final response = await CRUD().getMapSaas(link: url);

      if (response != null && response is List) {
        placesSuggestions = response;
      } else {
        placesSuggestions = [];
      }
      update();
    } catch (e) {
      print("[DestinationController] getPlacesSuggestions error: $e");
    }
  }

  // --- 3. Save destination to database ---
  Future<void> saveDestination(LatLng position, String name) async {
    isLoading = true;
    update();

    try {
      final response = await CRUD().post(
        link: AppLink.saveDriverDestination,
        payload: {
          'action': 'set',
          'destination_lat': position.latitude.toString(),
          'destination_lng': position.longitude.toString(),
          'destination_name': name,
        },
      );

      if (response != null && response is Map) {
        if (response['status'] == 'success') {
          activeLatLng = position;
          activeName = name;
          mySnackbarSuccess('Destination set successfully!'.tr);
        } else {
          final msg = response['message']?.toString() ?? "";
          if (msg.contains("الحد الأقصى") || msg.contains("limit")) {
            mySnackbarWarning('You have reached the daily limit of 2 destination settings.'.tr);
          } else {
            mySnackbarWarning('Failed to set destination. Please try again.'.tr);
          }
        }
      } else {
        mySnackbarWarning('Failed to set destination. Please try again.'.tr);
      }
    } catch (e) {
      print("[DestinationController] saveDestination error: $e");
      mySnackbarWarning('Failed to set destination. Please try again.'.tr);
    } finally {
      isLoading = false;
      update();
    }
  }

  // --- 4. Clear/Deactivate destination ---
  Future<void> clearDestination() async {
    isLoading = true;
    update();

    try {
      final response = await CRUD().post(
        link: AppLink.saveDriverDestination,
        payload: {'action': 'clear'},
      );

      if (response != null && response is Map && response['status'] == 'success') {
        activeLatLng = null;
        activeName = "";
        mySnackbarSuccess('Destination cleared!'.tr);
      } else {
        mySnackbarWarning('Failed to set destination. Please try again.'.tr);
      }
    } catch (e) {
      print("[DestinationController] clearDestination error: $e");
      mySnackbarWarning('Failed to set destination. Please try again.'.tr);
    } finally {
      isLoading = false;
      update();
    }
  }

  // --- 5. Reverse geocoding (for map picker) ---
  Future<String> reverseGeocode(LatLng location) async {
    final url = '${AppLink.reverseGeocoding}?lat=${location.latitude}&lng=${location.longitude}';
    try {
      final response = await CRUD().getMapSaas(link: url);
      if (response != null && response is List && response.isNotEmpty) {
        final data = response[0];
        return data['name_ar'] ?? data['name'] ?? 'Selected Location'.tr;
      }
      return 'Selected Location'.tr;
    } catch (e) {
      print("[DestinationController] reverseGeocode error: $e");
      return 'Selected Location'.tr;
    }
  }

  // --- 6. TTS Voice Explanation Helper ---
  void toggleSpeaker() {
    final tts = Get.find<TextToSpeechController>();
    if (tts.isSpeaking) {
      tts.stop();
    } else {
      tts.speakText('Destination Tool Description'.tr);
    }
  }
}