import 'dart:async';

import 'package:flutter/material.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/pages/my/contant_item_page.dart';
import 'package:one_key/provider/contant_show_model.dart';

import 'package:one_key/utils/dialog_util.dart';
import 'package:one_key/utils/misc.dart';

import 'package:one_key/widgets/page_exception.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> {
  late List<Contact> _contacts;
  bool isNeed = false;
  bool goSetting = false;
  bool userNo = false;
  ContantShowModel? contantShowModel;
  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) {
      _openAddressBook();
    });
  }

  _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 <void> refreshContacts() async {
    List<Contact> contacts = (await ContactsService.getContacts(
            withThumbnails: false, iOSLocalizedLabels: false))
        .toList();

    setState(() {
      _contacts = contacts;
      if (_contacts.length > 0) {
        contantShowModel!.contacts = [];
        for (int i = 0; i < _contacts.length; i++) {
          UserHistoryEntity item = UserHistoryEntity(
              '',
              '',
              _contacts[i].displayName == null ? '' : _contacts[i].displayName,
              '',
              _contacts[i].phones == null
                  ? ''
                  : _contacts[i].phones!.first.value!.replaceAll(' ', ''),
              '','','');
          item.pinyin = _contacts[i].displayName == null
              ? ''
              : PinyinHelper.getPinyin(_contacts[i].displayName!)
                  .replaceAll(' ', '');
          List<String> pinyinList = _contacts[i].displayName == null
              ? []
              : PinyinHelper.getPinyin(_contacts[i].displayName!).split(' ');
          item.pinyinFirst = '';
          item.pinyinList = [];
          String pinyinAll = ''; //组装全拼组合
          for (int j = 0; j < pinyinList.length; j++) {
            String letter = pinyinList[j];
            pinyinAll += pinyinList[j];
            item.pinyinList!.add(pinyinAll);
            if (letter.length > 0) {
               item.pinyinFirst =  item.pinyinFirst! + pinyinList[j].substring(0, 1);
              // item.pinyinFirst += pinyinList[j].substring(0, 1);
            } else {
              // item.pinyinFirst += '';
               item.pinyinFirst = item.pinyinFirst! + '';
            }
          }
          contantShowModel!.contacts.add(item);
        }
        contantShowModel!.contactsShow = contantShowModel!.contacts;
        contantShowModel!.pageStateRight = PageState.Success;
      } else {
        contantShowModel!.pageStateRight = PageState.Empty;
      }
    });
    await contantShowModel!.searchData(contantShowModel!.controller.text);
  }

  @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，请稍候...",
        );
      } else {
        return ListView.builder(
            itemCount: contantShowModel!.contactsShow.length,
            itemBuilder: (BuildContext context, int index) {
              UserHistoryEntity c = contantShowModel!.contactsShow[index];
              return ContantItemPage(
                onTap: () {
                  if (c.phone != null && c.phone != '') {
                    DialogUtil.goPhone(c.phone);
                  }
                },
                index: index,
                model: contantShowModel,
                data: contantShowModel!.contactsShow,
              );
            });
      }
    });
  }
}