import 'dart:convert';
import 'dart:io';
import 'dart:ui';

import 'package:android_intent_plus/android_intent.dart';
import 'package:dio/dio.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:geolocator/geolocator.dart';
import 'package:huixiang/generated/l10n.dart';
import 'package:huixiang/retrofit/data/address.dart';
import 'package:huixiang/retrofit/retrofit_api.dart';
import 'package:huixiang/utils/location.dart';
import 'package:huixiang/view_widget/request_permission.dart';
import 'package:permission_handler/permission_handler.dart' as PH;
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> {

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

  ApiService apiService;

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

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

    LocationInstance.getInstance().startLocation(context, (Position result) {
      print("event: $result");
      if (result != null &&
          result.latitude != null &&
          result.longitude != null) {
        latLng = Position(latitude: result.latitude, longitude: result.longitude);
        LocationInstance.getInstance().getAddress(result.latitude, result.longitude).then((value) {
          if (value != null) {
            city = value.city;
          }
        });
        saveLatLng(result);
        searchPoi(latLng);
      }
    });
    startLocation();
  }

  Position center = Position();
  List<Address> poiList;

  searchPoi(Position latLng) async {
    keyWord = textEditingController.text;
    print("keyWord: ${keyWord}");
    var addressPoi = await apiService.searchPoi("${latLng.latitude}", "${latLng.longitude}", keyWord, 20, 1);
    //如果定位列表无法显示,可以考虑数据是否不在当前字段里面;例:原数据放在['pois']里面,后改成了数据放在['entrances']里面
    List<dynamic> poi = addressPoi['pois']??addressPoi['entrances'];
    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(() {});
  }

  int time = 0;

  startLocation() async {
    if (!(await PH.Permission.locationWhenInUse.serviceStatus.isEnabled)) {
      enableLocation();
      return;
    }
    if (await PH.Permission.location.isPermanentlyDenied) {
      requestDialog();
    } else if (await PH.Permission.location.isGranted) {
      // EasyLoading.show(status: S.of(context).zhengzaijiazai);
      center = await Geolocator.getCurrentPosition();
      Future.delayed(Duration(seconds: 6), () {
        EasyLoading.dismiss();
      });
    } else if (await PH.Permission.location.isDenied) {
      await PH.Permission.location.request();
    } else {
      if (Platform.isIOS) {
        //去设置中心
        requestDialog();
      } else {
        await PH.Permission.location.request();
      }
    }
  }

  enableLocation() {
    showCupertinoDialog(
      context: context,
      builder: (context) {
        return RequestPermission(
          "assets/image/icon_permission_location_bg.webp",
          S.of(context).nindingweigongnengweikaiqi,
          S.of(context).weilexiangnintuijianfujindemendianxinxi,
          S.of(context).dakaidingwei,
          (result) async {
            if (result) {
              // final AndroidIntent intent = AndroidIntent(
              //     action: 'action_location_source_settings',
              //     package: "com.zsw.huixiang");
              // await intent.launch();
              // startLocation();
              Geolocator.openLocationSettings();
            }
          },
          heightRatioWithWidth: 0.82,
        );
      },
    );
  }

  requestDialog() {
    showCupertinoDialog(
        context: context,
        builder: (context) {
          return RequestPermission(
            "assets/image/icon_permission_location_bg.webp",
            S.of(context).nindingweiquanxianweiyunxu,
            S.of(context).weilexiangnintuijianfujindemendianxinxi,
            S.of(context).kaiqiquanxian,
            (result) async {
              if (result) {
                await PH.openAppSettings();
                if (await PH.Permission.location.isGranted) {
                  startLocation();
                }
              }
            },
            heightRatioWithWidth: 0.82,
          );
        });
  }



  Position latLng;


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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          searchWidget(),
          // Expanded(
          //   child: InkWell(
          //     onTap: () {
          //       startLocation();
          //     },
          //     child: Container(
          //       width: 32,
          //       height: 32,
          //       padding: EdgeInsets.all(8),
          //       decoration: BoxDecoration(
          //         borderRadius: BorderRadius.circular(16),
          //         color: Colors.white,
          //       ),
          //       child: Image.asset(
          //         "assets/image/icon_address_location_action.webp",
          //         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,
            ),
          ),
        ],
      ),
    );
  }
}