import 'dart:ui';

import 'package:dio/dio.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
import 'package:huixiang/data/base_list_data.dart';

import 'package:shared_preferences/shared_preferences.dart';

import '../generated/l10n.dart';

import '../data/im_user.dart';
import '../retrofit/retrofit_api.dart';
import '../utils/font_weight.dart';
import '../view_widget/custom_image.dart';
import '../view_widget/my_appbar.dart';
import '../view_widget/settlement_tips_dialog.dart';

class ImSearch extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _ImSearch();
  }
}

class _ImSearch extends State<ImSearch> {
  ApiService? apiService;
  final TextEditingController editingController = TextEditingController();
  FocusNode _focusNode = FocusNode();
  List<ImUser> searchUser = [];
  int searchState = 0;
  int textType = 0;
  int searchUserIndex = 0;
  String selfUserId = "";

  @override
  void initState() {
    super.initState();
    SharedPreferences.getInstance().then((value) {
      selfUserId = value.getString("userId") ?? "";
    });
  }

  ///离开页面记着销毁和清除
  @override
  void dispose() {
    _focusNode.unfocus();
    super.dispose();
  }

  ///搜索列表
  queryImSearch(keyword) async {
    if (apiService == null) {
      SharedPreferences value = await SharedPreferences.getInstance();
      apiService = ApiService(Dio(),
          context: context,
          token: value.getString("token"),
          showLoading:false
      );
    }
    BaseListData<ImUser>? baseData = await apiService?.memberSearch(keyword).catchError((onError) {
      return BaseListData<ImUser>()..isSuccess = false;
    });
    if (baseData?.isSuccess ?? false) {
      searchUser.clear();
      baseData?.data?.forEach((element) {
        if (element.phone != "" && element.nickname != "") {
          searchUser.add(element);
        }
      });
      searchState = 1;
      if (baseData?.data?.isEmpty ?? true) {
        searchState = 2;
      }
      setState(() {});
    }
  }

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTap: () {
        FocusScope.of(context).requestFocus(FocusNode());
      },
      child: Scaffold(
        backgroundColor: Color(0xFFFFFFFF),
        resizeToAvoidBottomInset: false,
        appBar: MyAppBar(
          title: "搜索",
          leadingColor: Colors.black,
          background: Color(0xFFFFFFFF),
        ),
        body: Container(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                crossAxisAlignment: CrossAxisAlignment.center,
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Expanded(child: imSearch()),
                  GestureDetector(
                    behavior: HitTestBehavior.opaque,
                    onTap: () {
                      Navigator.of(context).pop();
                    },
                    child: Container(
                        margin: EdgeInsets.only(top: 8.h, bottom: 29.h),
                        alignment: Alignment.center,
                        padding: EdgeInsets.only(right: 16.w),
                        child: Text(
                          S.of(context).quxiao,
                          textAlign: TextAlign.center,
                          style: TextStyle(
                            color: Color(0xFFA29E9E),
                            fontSize: 14.sp,
                            fontWeight: MyFontWeight.medium,
                          ),
                        )),
                  )
                ],
              ),
              searchState == 2
                  ? Center(
                      child: Text(
                        "未找到该用户",
                        style: TextStyle(
                          fontSize: 14.sp,
                          color: Color(0xFFA29E9E),
                        ),
                      ),
                    )
                  : Expanded(
                      child: Column(
                      children: [
                        Padding(
                          padding: EdgeInsets.only(bottom: 19.h),
                          child: Row(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              if (editingController.text != "" &&
                                  searchState == 1)
                                Padding(
                                  padding: EdgeInsets.only(left: 16.w),
                                  child: Text(
                                    "搜索用户：",
                                    textAlign: TextAlign.center,
                                    style: TextStyle(
                                      color: Color(0xFF060606),
                                      fontSize: 16.sp,
                                      fontWeight: MyFontWeight.medium,
                                    ),
                                  ),
                                ),
                              if (editingController.text != "" &&
                                  searchState == 1)
                                Expanded(
                                    child: Text(
                                  editingController?.text ?? "",
                                  style: TextStyle(
                                      fontSize: 16.sp,
                                      color: Color(0xFF32A060),
                                      fontWeight: MyFontWeight.regular),
                                ))
                            ],
                          ),
                        ),
                        if (editingController.text != "" && searchState == 1)
                          Expanded(
                              child: ListView.builder(
                            itemCount: searchUser?.length ?? 0,
                            physics: BouncingScrollPhysics(),
                            shrinkWrap: true,
                            itemBuilder: (context, position) {
                              return GestureDetector(
                                behavior: HitTestBehavior.opaque,
                                onTap: () {
                                  setState(() {
                                    searchUserIndex = position;
                                  });
                                  Navigator.of(context).pushNamed(
                                      '/router/personal_page',
                                      arguments: {
                                        "memberId": (searchUser[searchUserIndex]
                                                        .mid ??
                                                    "") ==
                                                selfUserId
                                            ? "0"
                                            : searchUser[searchUserIndex].mid,
                                        "inletType": 0
                                      });
                                  FocusScope.of(context)
                                      .requestFocus(FocusNode());
                                },
                                child: imSearchItem(searchUser[position]),
                              );
                            },
                          ))
                      ],
                    )),
            ],
          ),
        ),
      ),
    );
  }

  ///搜索
  Widget imSearch() {
    return Container(
      margin: EdgeInsets.fromLTRB(16.w, 8.h, 16.w, 29.h),
      padding: EdgeInsets.symmetric(vertical: 13.h),
      decoration: BoxDecoration(
        color: Color(0xFFFDFCFC),
        borderRadius: BorderRadius.circular(4),
      ),
      child: TextField(
        textInputAction: TextInputAction.search,
        onChanged: (value) {
          setState(() {
            searchState = 3;
          });
          if (isNumeric(value)) {
            textType = 1;
          } else {
            textType = 2;
          }
          if (editingController.text == null || editingController.text == "") {
            return;
          } else {
            queryImSearch(editingController.text ?? "");
          }
        },
        onEditingComplete: () {
          FocusScope.of(context).requestFocus(FocusNode());
          if (editingController.text == null || editingController.text == "") {
            SmartDialog.show(
                widget: SettlementTips(
              () {},
              text: "请输入姓名或手机号搜索",
            ));
          } else {
            queryImSearch(editingController.text ?? "");
          }
        },
        controller: editingController,
        style: TextStyle(
          fontSize: 14.sp,
        ),
        decoration: InputDecoration(
          hintText: "输入姓名或手机号搜索",
          hintStyle: TextStyle(
            fontSize: 14.sp,
            color: Color(0xFFA29E9E),
          ),
          isCollapsed: true,
          prefixIcon: Padding(
            padding: EdgeInsets.only(left: 15.w, right: 5.w),
            child: Image.asset(
              "assets/image/icon_search.webp",
              width: 14.h,
              height: 14.h,
              color: Color(0xFFB3B3B3),
            ),
          ),
          prefixIconConstraints: BoxConstraints(),
          border: InputBorder.none,
        ),
      ),
    );
  }

  ///搜索列表
  Widget imSearchItem(ImUser searchUser) {
    return Container(
        padding: EdgeInsets.only(left: 10.w, right: 16.w, bottom: 15.h),
        child: Row(
          children: [
            MImage(
              searchUser?.avatar ?? "",
              isCircle: true,
              height: 54.h,
              width: 54.h,
              fit: BoxFit.cover,
              errorSrc: "assets/image/default_1.webp",
              fadeSrc: "assets/image/default_1.webp",
            ),
            SizedBox(
              width: 12.w,
            ),
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  RichText(
                    text: TextSpan(
                      style: TextStyle(color: Colors.black), // 默认文本颜色为黑色
                      children: _splitText(searchUser?.nickname ?? "",
                              editingController.text)
                          .map((part) {
                        return TextSpan(
                          text: part,
                          style: part == editingController.text
                              ? TextStyle(color: Colors.green) // 匹配部分变为绿色
                              : null,
                        );
                      }).toList(),
                    ),
                  ),
                  SizedBox(
                    height: 7.h,
                  ),
                  RichText(
                    text: TextSpan(
                      style: TextStyle(color: Colors.black), // 默认文本颜色为黑色
                      children: _splitText(
                              searchUser?.phone ?? "", editingController.text)
                          .map((part) {
                        return TextSpan(
                          text: part,
                          style: part == editingController.text
                              ? TextStyle(color: Colors.green) // 匹配部分变为绿色
                              : null,
                        );
                      }).toList(),
                    ),
                  ),
                ],
              ),
            ),
          ],
        ));
  }

  /// 搜索结构显示
  List<String> _splitText(String text, String search) {
    if (text == null || text.isEmpty || search == null || search.isEmpty) {
      throw ArgumentError('text and search must not be null or empty');
    }

    final List<String> parts = [];
    int start = 0;
    int index = text.indexOf(search);

    while (index != -1) {
      if (index > start) {
        parts.add(text.substring(start, index));
      }
      parts.add(text.substring(index, index + search.length));
      start = index + search.length;
      index = text.indexOf(search, start);
    }

    if (start < text.length) {
      parts.add(text.substring(start));
    }

    return parts;
  }

  /// 判断给的字符串是否全部由数字组成
  bool isNumeric(String str) {
    RegExp regExp = RegExp(r'^\d+$');
    return regExp.hasMatch(str);
  }
}