rasadyar_application/packages/inspection/lib/presentation/pages/inspection_map/logic.dart

import 'dart:async';
import 'dart:math';

import 'package:flutter/material.dart';
import 'package:rasadyar_core/core.dart';
import 'package:rasadyar_inspection/data/model/response/poultry_location/poultry_location_model.dart';
import 'package:rasadyar_inspection/data/repositories/inspection/inspection_repository_imp.dart';
import 'package:rasadyar_inspection/injection/inspection_di.dart';
import 'package:rasadyar_inspection/presentation/widget/base_page/logic.dart';

class InspectionMapLogic extends GetxController with GetTickerProviderStateMixin {
  final BaseLogic baseLogic = Get.find<BaseLogic>();

  InspectionRepositoryImp inspectionRepository = diInspection.get<InspectionRepositoryImp>();

  final distance = Distance();

  Rx<LatLng> currentLocation = LatLng(34.798315281272544, 48.51479142983491).obs;

  Rx<Resource<List<PoultryLocationModel>>> allPoultryLocation =
      Resource<List<PoultryLocationModel>>.initial().obs;

  Rx<Resource<List<PoultryLocationModel>>> searchedPoultryLocation =
      Resource<List<PoultryLocationModel>>.initial().obs;

  RxList<Marker> markers = <Marker>[].obs;
  RxList<PoultryLocationModel> markers2 = <PoultryLocationModel>[].obs;

  Timer? _debounceTimer;
  RxBool isLoading = false.obs;
  RxBool isSelectedDetailsLocation = false.obs;

  RxInt filterIndex = 0.obs;
  RxInt showIndex = 0.obs;
  bool showSlideHint = true;
  RxInt currentZoom = 15.obs;
  Rx<MapController> mapController = MapController().obs;
  late final AnimatedMapController animatedMapController;

  @override
  void onInit() {
    super.onInit();
    animatedMapController = AnimatedMapController(
      vsync: this,
      duration: const Duration(milliseconds: 500),
      curve: Curves.easeInOut,
      cancelPreviousAnimations: true,
    );

    fetchAllPoultryLocations();

    debounce(baseLogic.searchValue, (callback) {
      if (callback != null &&
          callback.trim().isNotEmpty &&
          searchedPoultryLocation.value.status != ResourceStatus.loading) {
        searchPoultryLocations();
      }
    }, time: Duration(seconds: 2));
  }

  @override
  void onReady() {
    super.onReady();
    //determineCurrentPosition();
  }

  @override
  void onClose() {
    super.onClose();
  }

  Future<void> determineCurrentPosition() async {
    isLoading.value = true;
    final position = await Geolocator.getCurrentPosition(
      locationSettings: AndroidSettings(accuracy: LocationAccuracy.best),
    );
    final latLng = LatLng(position.latitude, position.longitude);

    /*currentLocation.value = latLng;
    markers.add(PoultryLocationModel(
      lat: latLng.latitude,
      long: latLng.longitude
    ));*/
    animatedMapController.animateTo(
      dest: latLng,
      zoom: 18,
      curve: Curves.easeInOut,
      duration: const Duration(seconds: 1),
    );
    isLoading.value = false;
  }

  void debouncedUpdateVisibleMarkers({required LatLng center, required double zoom}) {
    _debounceTimer?.cancel();
    _debounceTimer = Timer(const Duration(milliseconds: 300), () {
      final radius = getVisibleRadiusKm(
        zoom: zoom,
        screenWidthPx: Get.width.toDouble(),
        latitude: center.latitude,
      );

      final filtered = filterNearbyMarkers(
        allPoultryLocation.value.data ?? [],
        center.latitude,
        center.longitude,
        radius * 1000,
      );
      final existingIds = markers2.map((e) => e.id).toSet();
      final uniqueFiltered = filtered.where((e) => !existingIds.contains(e.id)).toList();
      markers2.addAll(uniqueFiltered);
    });
  }

  List<PoultryLocationModel> filterNearbyMarkers(
    List<PoultryLocationModel> allMarkers,
    double centerLat,
    double centerLng,
    double radiusInMeters,
  ) {
    final center = LatLng(centerLat, centerLng);

    return allMarkers.where((marker) {
      var tmp = LatLng(marker.lat ?? 0, marker.long ?? 0);
      return distance(center, tmp) <= radiusInMeters;
    }).toList();
  }

  Future<void> triggerSlidableAnimation() async {
    await Future.delayed(Duration(milliseconds: 200));
    //await slidController.value.openEndActionPane();
    await Future.delayed(Duration(milliseconds: 200));
    //await slidController.value.close();
    showSlideHint = false;
  }

  Future<void> fetchAllPoultryLocations() async {
    isLoading.value = true;
    allPoultryLocation.value = Resource<List<PoultryLocationModel>>.loading();
    await safeCall(
      call: () => inspectionRepository.getNearbyLocation(
        centerLat: currentLocation.value.latitude,
        centerLng: currentLocation.value.longitude,
        radius: 15, // Radius in K meters
      ),
      onSuccess: (result) {
        if (result != null) {
          allPoultryLocation.value = Resource<List<PoultryLocationModel>>.success(result);
        } else {
          allPoultryLocation.value = Resource<List<PoultryLocationModel>>.error(
            'No locations found',
          );
        }
      },
      onError: (error, stackTrace) {
        allPoultryLocation.value = Resource<List<PoultryLocationModel>>.error(error.toString());
      },
    );
  }

  Future<void> searchPoultryLocations() async {
    searchedPoultryLocation.value = Resource<List<PoultryLocationModel>>.loading();
    await safeCall(
      call: () => inspectionRepository.getNearbyLocation(value: baseLogic.searchValue.value),
      onSuccess: (result) {
        if (result != null || result!.isNotEmpty) {
          searchedPoultryLocation.value = Resource<List<PoultryLocationModel>>.success(result);
        } else {
          searchedPoultryLocation.value = Resource<List<PoultryLocationModel>>.empty();
        }
      },
      onError: (error, stackTrace) {
        searchedPoultryLocation.value = Resource<List<PoultryLocationModel>>.error(
          error.toString(),
        );
      },
    );
  }

  double getVisibleRadiusKm({
    required double zoom,
    required double screenWidthPx,
    required double latitude,
  }) {
    double metersPerPixel = 156543.03392 * cos(latitude * pi / 180) / pow(2, zoom);
    double visibleWidthInMeters = metersPerPixel * screenWidthPx;
    return (visibleWidthInMeters / 2) / 1000; // radius in KM
  }
}