import 'dart:io';

import 'package:flutter/material.dart';

import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:lpinyin/lpinyin.dart';
import 'package:one_key/constant/state.dart';
import 'package:one_key/models/user_history_entity.dart';
import 'package:one_key/provider/contant_show_model.dart';

import 'package:one_key/res/colors.dart';
import 'package:one_key/utils/dialog_util.dart';
import 'package:one_key/utils/misc.dart';
import 'package:one_key/widgets/MyDivider.dart';

import 'package:one_key/widgets/page_exception.dart';
import 'package:one_key/widgets/v_empty_view.dart';
import 'package:contacts_service/contacts_service.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:provider/provider.dart';

class ContantRightPage extends StatefulWidget {
  ContantRightPage({Key key}) : super(key: key);

  @override
  _ContantRightPageState createState() => _ContantRightPageState();
}

class _ContantRightPageState extends State<ContantRightPage> {
  // PageState _pageState = PageState.Loading;
  List<Contact> _contacts;
  bool isNeed = false;
  bool goSetting = false;
  bool userNo = false;
  ContantShowModel contantShowModel;
  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) {
      _openAddressBook();
    });
  }

  // Future<void> _askPermissions() async {
  //   PermissionStatus permissionStatus = await _getContactPermission();
  //   if (permissionStatus != PermissionStatus.granted) {
  //     _handleInvalidPermissions(permissionStatus);
  //   }
  // }

  _openAddressBook() async {
    if (!(await checkContactPermission())) {
      PermissionStatus permissionStatus = await contactPermissionStatus();
      if (permissionStatus == PermissionStatus.permanentlyDenied) {
        //用户选择不在弹出权限提示框
        print('never');
        userNo = true;
        setState(() {
          contantShowModel.pageStateRight = PageState.NoPermission;
        });
        // DialogUtil.openAlertDialog(
        //     context, '未获得通讯录权限', "请在手机的权限管理里，将通讯录权限开启", '去设置', 340.0,
        //     onTap: () {
        //   goSetting = true;
        //   openSetting();
        //   Navigator.pop(context, '');
        // });
      } else {
        // 申请权限
        bool canContacts = await requestContactPermission();
        if (canContacts) {
          refreshContacts();
        } else {
          setState(() {
            contantShowModel.pageStateRight = PageState.NoPermission;
          });
          //拒绝通讯录权限 , 苹果拒绝权限后，不再提示权限框，进入此处
          // DialogUtil.openAlertDialog(
          //     context, '未获得通讯录权限', "请在手机的权限管理里，将通讯录权限开启。", '去设置', 340.0,
          //     onTap: () {
          //   goSetting = true;
          //   openSetting();
          //   Navigator.pop(context, '');
          // });
        }
      }
    } else {
      refreshContacts();
    }
  }

  // Future<PermissionStatus> _getContactPermission() async {
  //   PermissionStatus permission = await PermissionHandler()
  //       .checkPermissionStatus(PermissionGroup.contacts);
  //   if (permission != PermissionStatus.granted &&
  //       permission != PermissionStatus.disabled) {
  //     Map<PermissionGroup, PermissionStatus> permissionStatus =
  //         await PermissionHandler()
  //             .requestPermissions([PermissionGroup.contacts]);
  //     return permissionStatus[PermissionGroup.contacts] ??
  //         PermissionStatus.unknown;
  //   } else {
  //     return permission;
  //   }
  // }

  // void _handleInvalidPermissions(PermissionStatus permissionStatus) {
  //   if (permissionStatus == PermissionStatus.denied) {
  //     throw PlatformException(
  //         code: "PERMISSION_DENIED",
  //         message: "Access to location data denied",
  //         details: null);
  //   } else if (permissionStatus == PermissionStatus.disabled) {
  //     throw PlatformException(
  //         code: "PERMISSION_DISABLED",
  //         message: "Location data is not available on device",
  //         details: null);
  //   }
  // }

  Future<void> refreshContacts() async {
    // Load without thumbnails initially.
    List<Contact> contacts = (await ContactsService.getContacts(
            withThumbnails: false, iOSLocalizedLabels: false))
        .toList();
//      var contacts = (await ContactsService.getContactsForPhone("8554964652"))
//          .toList();
    setState(() {
      _contacts = contacts;
      if (_contacts.length > 0) {
        contantShowModel.contacts = [];
        for (int i = 0; i < _contacts.length; i++) {
          UserHistoryEntity item = UserHistoryEntity(
              '',
              '',
              _contacts[i].displayName,
              '',
              _contacts[i].phones.first.value,
              '');
          item.pinyin = PinyinHelper.getPinyin(_contacts[i].displayName)
              .replaceAll(' ', '');
          item.pinyinList =
              PinyinHelper.getPinyin(_contacts[i].displayName).split(' ');
          item.pinyinFirst = '';
          for (int j = 0; j < item.pinyinList.length; j++) {
            String letter = item.pinyinList[j];
            if (letter.length > 0) {
              item.pinyinFirst += item.pinyinList[j].substring(0, 1);
            } else {
              item.pinyinFirst += '';
            }
          }
          contantShowModel.contacts.add(item);
        }
        contantShowModel.contactsShow = contantShowModel.contacts;
        contantShowModel.pageStateRight = PageState.Success;
      } else {
        contantShowModel.pageStateRight = PageState.Empty;
      }
    });

    // Lazy load thumbnails after rendering initial contacts.
    // for (final contact in contacts) {
    //   ContactsService.getAvatar(contact).then((avatar) {
    //     if (avatar == null) return; // Don't redraw if no change.
    //     setState(() => contact.avatar = avatar);
    //   });
    // }
  }

  _openContactForm() async {
    try {
      var contact =
          await ContactsService.openContactForm(iOSLocalizedLabels: false);
      refreshContacts();
    } on FormOperationException catch (e) {
      switch (e.errorCode) {
        case FormOperationErrorCode.FORM_OPERATION_CANCELED:
        case FormOperationErrorCode.FORM_COULD_NOT_BE_OPEN:
        case FormOperationErrorCode.FORM_OPERATION_UNKNOWN_ERROR:
        default:
          print(e.errorCode);
      }
    }
  }

  // /// app生命周期
  // @override
  // void didChangeAppLifecycleState(AppLifecycleState state) async {
  //   switch (state) {
  //     case AppLifecycleState.resumed: // 应用程序可见，前台
  //       if (!Platform.isAndroid) {
  //         if (isNeed) {
  //           isNeed = false;
  //           if (goSetting) {
  //             _getContactPemisoin();
  //           }
  //         }
  //       } else {
  //         if (goSetting) {
  //           _getContactPemisoin();
  //         }
  //       }
  //       break;
  //     case AppLifecycleState.paused:
  //       print('paused');
  //       // if (!Platform.isAndroid) {
  //       //   if (!(await checkLocationPermission())) {
  //       //     //没有定位权限
  //       isNeed = true;
  //       //   } else {
  //       //     isNeed = false;
  //       //   }
  //       // }

  //       break;
  //     default:
  //       break;
  //   }
  // }

  ///  程序进入前台刷新位置权限（来回切换位置权限，及时刷新页面）
  _getContactPemisoin() async {
    if (await checkContactPermission()) {
      userNo = false;
    }
    if (!userNo) {
      goSetting = false;
      _openAddressBook();
    }
  }

  @override
  Widget build(BuildContext context) {
    contantShowModel = Provider.of<ContantShowModel>(context, listen: true);
    return Consumer<ContantShowModel>(builder: (context, model, _) {
      if (model.pageStateRight != PageState.Success) {
        return ExceptionPage(
          pageState: model.pageStateRight,
          callback: () async {
            if (await checkContactPermission()) {
              _openAddressBook();
            } else {
              goSetting = true;
              openSetting();
            }
          },
          emptyMsg: "暂时没有联系人哦",
          emptyImg: "empty_search",
          showMsg: "加载中，请稍后...",
        );
      } else {
        return ListView.builder(
            itemCount: contantShowModel.contactsShow?.length ?? 0,
            itemBuilder: (BuildContext context, int index) {
              UserHistoryEntity c = contantShowModel.contactsShow[index];
              return InkWell(
                  onTap: () {
                    if (c.phone != null && c.phone != '') {
                      DialogUtil.goPhone(c.phone);
                    }
                  },
                  child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        index == 0
                            ? MyDivider(
                                double.infinity,
                                ScreenUtil().setWidth(20),
                                color: MyColours.color_f5f5f5,
                              )
                            : Container(),
                        Container(
                          width: double.infinity,
                          padding: EdgeInsets.symmetric(
                              horizontal: ScreenUtil().setWidth(40),
                              vertical: ScreenUtil().setWidth(30)),
                          height: ScreenUtil().setWidth(74 * 2),
                          decoration: BoxDecoration(
                              border: Border(
                                  top: index == 0
                                      ? BorderSide(
                                          width: ScreenUtil().setWidth(2),
                                          color: MyColours.color_E0E0E0)
                                      : BorderSide(
                                          width: 0, color: Colors.transparent),
                                  bottom: BorderSide(
                                      width: ScreenUtil().setWidth(2),
                                      color: MyColours.color_E0E0E0))),
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Text(
                                  c.rname == null || c.rname == ''
                                      ? ''
                                      : c.rname,
                                  style: TextStyle(
                                      color: MyColours.color_333333,
                                      fontSize: ScreenUtil().setSp(32))),
                              VEmptyView(10),
                              Text(
                                  c.phone == null || c.phone == ''
                                      ? ''
                                      : c.phone,
                                  style: TextStyle(
                                      color: MyColours.color_999999,
                                      fontSize: ScreenUtil().setSp(30)))
                            ],
                          ),
                        )
                      ]));
            });
      }
    });
  }
}