import 'dart:convert';

import 'package:amap_flutter_location/amap_flutter_location.dart';
import 'package:amap_flutter_base/amap_flutter_base.dart';
import 'package:amap_flutter_location/amap_location_option.dart';
import 'package:amap_flutter_map/amap_flutter_map.dart';
import 'package:dio/dio.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
import 'package:huixiang/retrofit/data/address.dart';
import 'package:huixiang/retrofit/retrofit_api.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

class AddressMapPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _AddressMapPage();
  }
}

class _AddressMapPage extends State<AddressMapPage> {
//默认设置为不使用自定义地图，如果需要直接显示，在初始化是设置为true
  CustomStyleOptions _customStyleOptions = CustomStyleOptions(false);

  //加载自定义地图样式
  void _loadCustomData() async {
    if (null == _customStyleOptions) {
      _customStyleOptions = CustomStyleOptions(false);
    }
    ByteData styleByteData =
        await rootBundle.load('assets/map_style/style.data');
    _customStyleOptions.styleData = styleByteData.buffer.asUint8List();
    ByteData styleExtraByteData =
        await rootBundle.load('assets/map_style/style_extra.data');
    _customStyleOptions.styleExtraData =
        styleExtraByteData.buffer.asUint8List();
    //如果需要加载完成后直接展示自定义地图，可以通过setState修改CustomStyleOptions的enable为true
    setState(() {
      _customStyleOptions.enabled = true;
    });
  }

  AMapFlutterLocation aMapFlutterLocation;
  String city = "武汉市";
  String keyWord = "";

  @override
  void dispose() {
    super.dispose();
    aMapFlutterLocation.stopLocation();
    aMapFlutterLocation.destroy();
  }

  ApiService apiService;

  @override
  void initState() {
    super.initState();

    SharedPreferences.getInstance().then((value) => {
          apiService =  ApiService(Dio(), context: context, token: value.getString('token')),
        });

    if (aMapFlutterLocation == null) {
      AMapFlutterLocation.setApiKey("f39d1daa020a56f208eb2519f63e9534",
          "feaae7986201b571cace1b83728be5bb");
      aMapFlutterLocation = AMapFlutterLocation();
      aMapFlutterLocation.onLocationChanged().listen((event) {
        print("event: ${jsonEncode(event)}");
        if (event != null &&
            event["latitude"] != null &&
            event["longitude"] != null) {
          city = event["city"];
          LatLng latLng;
          if (event["latitude"] is String && event["longitude"] is String) {
            latLng = LatLng(double.tryParse(event["latitude"]),
                double.tryParse(event["longitude"]));
          } else {
            latLng = LatLng(event["latitude"], event["longitude"]);
          }
          saveLatLng(latLng);
          if (_mapController != null)
            _mapController.moveCamera(
              CameraUpdate.newCameraPosition(
                CameraPosition(
                  target: latLng,
                  zoom: 15.0,
                ),
              ),
            );
          searchPoi(latLng);
        }
      });
    }
    aMapFlutterLocation.setLocationOption(
      AMapLocationOption(
        needAddress: true,
        onceLocation: true,
        locationMode: AMapLocationMode.Hight_Accuracy,
        pausesLocationUpdatesAutomatically: true,
      ),
    );

    _loadCustomData();

    getLatLng();
    startLocation();
  }

  List<Address> poiList;

  searchPoi(LatLng latLng) async {
    keyWord = textEditingController.text;
    var addressPoi = await apiService.searchPoi(
        "${latLng.latitude}", "${latLng.longitude}", keyWord, 20, 1);
    List<dynamic> poi = addressPoi['pois'];
    poiList = poi
        .map((e) => Address.fromJson({
              "address": e["address"] is List ? "" : e["address"],
              "area": e["adname"],
              "city": e["cityname"],
              "province": e["pname"],
              "latitude": e["location"].toString().split(",")[0],
              "longitude": e["location"].toString().split(",")[1],
              "cityInfo": e["name"],
              "id": "",
              "mid": "",
              "phone": "",
              "tag": "",
              "username": "",
              "isDefault": true,
            }))
        .toList();
    setState(() {});
  }

//{"parent":[],"distance":"7","pcode":"420000","importance":[],
// "recommend":"0","type":"商务住宅;住宅区;住宅区","photos":[],"discount_num":"0","gridcode":"4514626711",
// "typecode":"120300","shopinfo":"0","poiweight":[],"citycode":"027","adname":"武昌区","children":[],
// "alias":[],"tel":[],"id":"B0G2YMOFHL","tag":[],"event":[],"entr_location":[],"indoor_map":"0",
// "email":[],"timestamp":"2021-06-02 00:19:39","website":[],"address":"中北路86号","adcode":"420106",
// "pname":"湖北省","biz_type":[],"cityname":"武汉市","postcode":[],"match":"0","business_area":"中北路",
// "indoor_data":,"childtype":[],"exit_location":[],
// "name":"万象春天","location":"114.343968,30.554595","shopid":[],"navi_poiid":[],"groupbuy_num":"0"}
  startLocation() async {
    // await AmapCore.init('feaae7986201b571cace1b83728be5bb');
    if (await Permission.locationWhenInUse.serviceStatus.isEnabled) {
      bool isShown = await Permission.contacts.shouldShowRequestRationale;
      if (isShown) {
        SmartDialog.showToast("shouldShowRequest");
      }
      if (await Permission.location.isPermanentlyDenied) {
        //openAppSettings
      } else if (await Permission.location.isGranted) {
        aMapFlutterLocation.startLocation();
      } else {
        await Permission.location.request();
        startLocation();
      }
    } else {
      //enabledLocation
      // _mapController.getMapContentApprovalNumber()
      // _mapController
    }
  }

  AMapController _mapController;

  void onMapCreated(AMapController controller) {
    setState(() {
      _mapController = controller;
    });
  }

  saveLatLng(LatLng latLng) async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    await prefs.setString("latitude", "${latLng.latitude}");
    await prefs.setString("longitude", "${latLng.longitude}");
  }

  getLatLng() async {
    SharedPreferences.getInstance().then((value) => {
          setState(() {
            if (_mapController != null) {
              _mapController
                  .moveCamera(CameraUpdate.newCameraPosition(CameraPosition(
                target: LatLng(double.tryParse(value.getString("latitude")),
                    double.tryParse(value.getString("longitude"))),
                zoom: 15.0,
              )));
            }
          })
        });
  }

  AMapWidget map;
  LatLng center = LatLng(30.553111, 114.342366);

  @override
  Widget build(BuildContext context) {
    AMapApiKey aMapApiKeys = AMapApiKey(
        androidKey: 'f39d1daa020a56f208eb2519f63e9534',
        iosKey: 'feaae7986201b571cace1b83728be5bb');
    return Scaffold(
      body: Column(
        children: [
          Expanded(
            child: Stack(
              children: [
                Container(
                  child: AMapWidget(
                    initialCameraPosition: CameraPosition(
                      target: LatLng(30.553111, 114.342366),
                      zoom: 12.0,
                    ),
                    onMapCreated: onMapCreated,
                    onCameraMoveEnd: (cameraPosition) {
                      center = cameraPosition.target;
                      searchPoi(center);
                    },
                    onCameraMove: (cameraPosition) {
                      center = cameraPosition.target;
                      setState(() {});
                    },
                    apiKey: aMapApiKeys,
                    // markers: [Marker(position: center)].toSet(),
                    touchPoiEnabled: true,
                    scrollGesturesEnabled: true,
                    customStyleOptions: _customStyleOptions,
                    gestureRecognizers: <Factory<OneSequenceGestureRecognizer>>[
                      Factory<OneSequenceGestureRecognizer>(
                          () => EagerGestureRecognizer())
                    ].toSet(),
                  ),
                ),
                Center(
                  child: IgnorePointer(
                    child: Container(
                      margin: EdgeInsets.only(bottom: 44.h),
                      child: Image.asset(
                        "assets/image/icon_address_location.png",
                        width: 66.w,
                        height: 75.h,
                      ),
                    ),
                  ),
                ),
                searchWidget(),
                Positioned(
                  right: 17,
                  bottom: 16,
                  child: InkWell(
                    onTap: () {
                      startLocation();
                    },
                    child: Container(
                      width: 32.w,
                      height: 32.h,
                      padding: EdgeInsets.all(8),
                      decoration: BoxDecoration(
                        borderRadius: BorderRadius.circular(16),
                        color: Colors.white,
                      ),
                      child: Image.asset(
                        "assets/image/icon_address_location_action.png",
                        width: 16.w,
                        height: 16.h,
                      ),
                    ),
                  ),
                )
              ],
            ),
            flex: 1,
          ),
          Expanded(
            child: Container(
              child: ListView.separated(
                padding: EdgeInsets.symmetric(vertical: 0),
                itemCount: poiList != null ? poiList.length : 0,
                itemBuilder: (context, position) {
                  return InkWell(
                    onTap: () {
                      Navigator.of(context).pop(poiList[position].toJson());
                    },
                    child: addressItem(poiList[position]),
                  );
                },
                separatorBuilder: (contetx, position) {
                  return Container(
                    height: 1,
                    margin: EdgeInsets.symmetric(horizontal: 16.w),
                    color: Color(0xFFF1F1F1),
                  );
                },
              ),
            ),
            flex: 1,
          )
        ],
      ),
    );
  }

  Widget addressItem(Address address) {
    return Container(
      margin: EdgeInsets.symmetric(vertical: 16.h, horizontal: 16.w),
      child: Column(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            address.cityInfo,
            overflow: TextOverflow.ellipsis,
            style: TextStyle(
              fontSize: 16.sp,
              fontWeight: FontWeight.bold,
              color: Colors.black,
            ),
          ),
          SizedBox(
            height: 4.h,
          ),
          Text(
            "${address.province}${address.city}${address.area}${address.address}",
            overflow: TextOverflow.ellipsis,
            style: TextStyle(
              color: Color(0xFF4C4C4C),
              fontSize: 14.sp,
            ),
          )
        ],
      ),
    );
  }

  TextEditingController textEditingController = TextEditingController();

  Widget searchWidget() {
    return Container(
      height: 36.h,
      margin: EdgeInsets.fromLTRB(16, 48, 16, 8),
      padding: EdgeInsets.fromLTRB(10, 6, 16, 6),
      decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.all(Radius.circular(4)),
          boxShadow: [
            BoxShadow(
              color: Colors.black.withAlpha(12),
              offset: Offset(0, 3),
              blurRadius: 14,
              spreadRadius: 0,
            )
          ]),
      child: Row(
        mainAxisSize: MainAxisSize.max,
        children: [
          Icon(
            Icons.search,
            size: 24,
            color: Colors.black,
          ),
          Expanded(
            child: TextField(
              controller: textEditingController,
              textInputAction: TextInputAction.search,
              onEditingComplete: () {
                FocusScope.of(context).requestFocus(FocusNode());
                searchPoi(center);
              },
              decoration: InputDecoration(border: InputBorder.none),
            ),
          ),
          InkWell(
            onTap: () {
              textEditingController.clear();
            },
            child: Icon(
              Icons.close,
              size: 19,
              color: Colors.grey,
            ),
          ),
        ],
      ),
    );
  }
}