import 'dart:ui';

import 'package:amap_flutter_location/amap_flutter_location.dart';
import 'package:amap_flutter_location/amap_location_option.dart';
import 'package:dio/dio.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:huixiang/generated/l10n.dart';
import 'package:huixiang/retrofit/data/base_data.dart';
import 'package:huixiang/retrofit/data/store.dart';
import 'package:huixiang/retrofit/retrofit_api.dart';
import 'package:huixiang/view_widget/classic_header.dart';
import 'package:huixiang/view_widget/custom_image.dart';
import 'package:huixiang/view_widget/item_title.dart';
import 'package:amap_flutter_base/amap_flutter_base.dart';
import 'package:amap_flutter_map/amap_flutter_map.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:huixiang/view_widget/loading_view.dart';
import 'package:huixiang/view_widget/rotate_container.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'dart:async';
import 'dart:typed_data';
import 'dart:ui';

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

class UnionPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _UnionPage();
  }
}

class _UnionPage extends State<UnionPage> with AutomaticKeepAliveClientMixin {
  //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;
  RefreshController refreshController =
      RefreshController(initialRefresh: false);

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

  ApiService apiService;

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

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

    _loadCustomData();

    getLatLng();
    startLocation();
  }

  LatLng latLng;

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

  getLatLng() async {
    SharedPreferences.getInstance().then((value) => {
          apiService = ApiService(Dio(), token: value.getString('token')),
          latLng = LatLng(double.tryParse(value.getString("latitude")),
              double.tryParse(value.getString("longitude"))),
          queryStore(
              value.getString("latitude"),
              value.getString("longitude"),
              value.getString("province"),
              value.getString("city"),
              value.getString("district"),
              ""),
          setState(() {
            if (_mapController != null) {
              _mapController.moveCamera(
                CameraUpdate.newCameraPosition(
                  CameraPosition(
                    target: latLng,
                    zoom: 15.0,
                  ),
                ),
              );
            }
          })
        });
  }

  List<Store> storeList;

  queryStore(latitude, longitude, province, city, district, searchKey) async {
    BaseData baseData = await apiService.queryStore({
      "city": city,
      "district": district,
      "latitude": latitude,
      "longitude": longitude,
      "province": province,
      "searchKey": searchKey
    }).catchError((error) {
      refreshController.refreshFailed();
    });
    Navigator.pop(dialogContext);
    if (baseData.isSuccess) {
      storeList = (baseData.data as List<dynamic>)
          .map((e) => Store.fromJson(e))
          .toList();

      buildMarker();

      refreshController.refreshCompleted();
      setState(() {});
    } else {
      refreshController.refreshFailed();
      Fluttertoast.showToast(msg: baseData.msg);
    }
  }

  RepaintBoundary repaintBoundary;

  buildMarker() async {
    markers.clear();
    markers.addAll(storeList.map((element) => Marker(
          position: LatLng(double.tryParse(element.latitude),
              double.tryParse(element.longitude)),
          anchor: Offset(0.5, 0.8),
          icon: BitmapDescriptor.defaultMarkerWithHue(BitmapDescriptor.hueRose),
          infoWindowEnable: true,
        )));
    setState(() {});
  }

  BuildContext dialogContext;

  showLoadingDialog() {
    showCupertinoDialog(
        context: context,
        barrierDismissible: true,
        builder: (context) {
          dialogContext = context;
          return LoadingView();
        });
  }

  List<Marker> markers = [];

  @override
  Widget build(BuildContext context) {
    AMapApiKey aMapApiKeys = AMapApiKey(
        androidKey: 'f39d1daa020a56f208eb2519f63e9534',
        iosKey: 'feaae7986201b571cace1b83728be5bb');
    return Scaffold(
      body: NestedScrollView(
        physics: BouncingScrollPhysics(),
        headerSliverBuilder: (context, inner) {
          return [
            buildSliverAppBar(AMapWidget(
              initialCameraPosition: CameraPosition(
                target: LatLng(30.553111, 114.342366),
                zoom: 12.0,
              ),
              onMapCreated: onMapCreated,
              apiKey: aMapApiKeys,
              touchPoiEnabled: true,
              markers: markers.toSet(),
              scrollGesturesEnabled: true,
              customStyleOptions: _customStyleOptions,
              gestureRecognizers: <Factory<OneSequenceGestureRecognizer>>[
                Factory<OneSequenceGestureRecognizer>(
                    () => EagerGestureRecognizer())
              ].toSet(),
            )),
          ];
        },
        body: Container(
          child: SmartRefresher(
            controller: refreshController,
            enablePullUp: false,
            enablePullDown: true,
            physics: BouncingScrollPhysics(),
            header: MyHeader(),
            onRefresh: () {
              startLocation();
            },
            child: ListView.builder(
                itemCount: storeList == null ? 0 : storeList.length,
                padding: EdgeInsets.only(top: 8, bottom: 8),
                itemBuilder: (context, position) {
                  return GestureDetector(
                    onTap: () {
                      Navigator.of(context).pushNamed(
                          '/router/union_detail_page',
                          arguments: storeList[position].toJson());
                    },
                    child: buildStoreItem(storeList[position], position),
                  );
                }),
          ),
        ),
      ),
    );
  }

  startLocation() async {
    if (await Permission.locationWhenInUse.serviceStatus.isEnabled) {
      bool isShown = await Permission.contacts.shouldShowRequestRationale;
      if (isShown) {
        Fluttertoast.showToast(
          msg: "shouldShowRequestRationale",
          toastLength: Toast.LENGTH_SHORT,
          gravity: ToastGravity.CENTER,
          timeInSecForIosWeb: 1,
          backgroundColor: Colors.red,
          textColor: Colors.white,
          fontSize: 16.0,
        );
      }
      if (await Permission.location.isPermanentlyDenied) {
        //openAppSettings
      } else if (await Permission.location.isGranted) {
        showLoadingDialog();
        aMapFlutterLocation.startLocation();
      } else {
        await Permission.location.request();
        startLocation();
      }
    } else {
      //enabledLocation
    }
  }

  AMapController _mapController;
  TextEditingController editingController = TextEditingController();

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

  Widget buildSliverAppBar(AMapWidget map) {
    return SliverAppBar(
      pinned: true,
      floating: true,
      snap: true,
      backgroundColor: Color(0xFFFAFAFA),
      elevation: 0,
      automaticallyImplyLeading: false,
      title: Container(
        height: 36,
        margin: EdgeInsets.fromLTRB(16, 8, 16, 8),
        padding: EdgeInsets.fromLTRB(13, 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(
          children: [
            Icon(
              Icons.search,
              size: 24,
              color: Colors.black,
            ),
            Expanded(
              child: TextField(
                controller: editingController,
                decoration: InputDecoration(border: InputBorder.none),
              ),
            ),
            Icon(
              Icons.close,
              size: 19,
              color: Colors.grey,
            ),
          ],
        ),
      ),
      flexibleSpace: FlexibleSpaceBar(
        background: Container(
          child: map,
        ),
      ),
      expandedHeight: 375,
      bottom: PreferredSize(
        preferredSize: Size(double.infinity, 50),
        child: Container(
          padding: EdgeInsets.only(top: 6),
          color: Color(0xFFFAFAFA),
          child: ItemTitle(
            text: "净币联盟会员店",
            imgPath: "assets/image/icon_union_store.png",
          ),
        ),
      ),
    );
  }

  Widget buildStoreItem(Store store, position) {
    return Container(
      margin: EdgeInsets.fromLTRB(16, 8, 16, 8),
      padding: EdgeInsets.fromLTRB(20, 20, 20, 20),
      decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.all(Radius.circular(8)),
          boxShadow: [
            BoxShadow(
              color: Colors.black.withAlpha(25),
              offset: Offset(0, 1),
              blurRadius: 12,
              spreadRadius: 0,
            )
          ]),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.start,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          MImage(
            store.logo,
            width: 95,
            height: 95,
            fit: BoxFit.cover,
            errorSrc: "assets/image/default_avatar.png",
            fadeSrc: "assets/image/default_avatar.png",
          ),
          SizedBox(
            width: 12,
          ),
          Expanded(
            flex: 1,
            child: Container(
              height: 95,
              child: Column(
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: [
                      Text(
                        store.storeName,
                        style: TextStyle(
                          color: Colors.black,
                          fontSize: 16,
                          fontWeight: FontWeight.bold,
                        ),
                      ),
                      Expanded(
                        child: Text(
                          store.posType == null ? "" : store.posType.desc,
                          overflow: TextOverflow.ellipsis,
                          textAlign: TextAlign.end,
                          style: TextStyle(
                            color: Color(0xFFEDB12F),
                            fontSize: 14,
                          ),
                        ),
                        flex: 1,
                      )
                    ],
                  ),
                  Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: [
                      Text(
                        store.distance > 1000
                            ? S.of(context).gongli(
                                (store.distance / 1000 * 100).toInt() / 100.0)
                            : S
                                .of(context)
                                .mi((store.distance * 100).toInt() / 100.0),
                        style: TextStyle(
                          color: Color(0xFF4C4C4C),
                          fontSize: 12,
                        ),
                      ),
                      SizedBox(
                        width: 16,
                      ),
                      Expanded(
                        child: Container(
                          alignment: Alignment.centerRight,
                          child: Text(
                            store.address,
                            overflow: TextOverflow.ellipsis,
                            style: TextStyle(
                              color: Color(0xFF727272),
                              fontSize: 12,
                            ),
                          ),
                        ),
                      )
                    ],
                  ),
                  Container(
                    margin: EdgeInsets.only(top: 16),
                    child: Text(
                      S.of(context).manlijiandaijinquan(50, 25),
                      style: TextStyle(
                        color: Color(0xFFFF7A1A),
                        fontSize: 10,
                      ),
                    ),
                  ),
                  Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: [
                      Text(
                        (store.openStartTime == null &&
                                store.openEndTime == null)
                            ? "全天"
                            : "${store.openStartTime}-${store.openEndTime}",
                        style:
                            TextStyle(color: Color(0xFFA29E9E), fontSize: 12),
                      ),
                      Text(
                        S.of(context).ren(108),
                        style:
                            TextStyle(color: Color(0xFF353535), fontSize: 12),
                      )
                    ],
                  ),
                ],
              ),
            ),
          )
        ],
      ),
    );
  }

  @override
  bool get wantKeepAlive => true;
}