MessagingApp/lib/pages/search_page.dart

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:messaging_app/components/messaging_provider.dart';
import 'package:messaging_app/models/users.dart';
import 'package:messaging_app/pages/conversations_page.dart';
import 'package:messaging_app/service/navigation_service.dart';
import 'package:provider/provider.dart';
import 'package:timeago/timeago.dart' as timeago;

// ignore: must_be_immutable
class SearchPage extends StatefulWidget {
  SearchPage({
    super.key,
    required this.deviceHeight,
    required this.deviceWidth,
  });

  double deviceHeight;
  double deviceWidth;
  late MessagingProviders _auth;

  @override
  State<SearchPage> createState() => _SearchPageState();
}

class _SearchPageState extends State<SearchPage> {
  late String _searchText;
  late List<User> _usersData;
  //
  @override
  void initState() {
    super.initState();
    _searchText = '';
    _usersData = [];
  }

  @override
  Widget build(BuildContext context) {
    return SingleChildScrollView(
      child: SizedBox(
        height: widget.deviceHeight,
        width: widget.deviceWidth,
        child: ChangeNotifierProvider.value(
          value: MessagingProviders.instance,
          child: _searchPaheUI(),
        ),
      ),
    );
  }

  Widget _searchPaheUI() {
    return Builder(builder: (_context) {
      widget._auth = Provider.of<MessagingProviders>(_context);
      return Column(
        mainAxisAlignment: MainAxisAlignment.start,
        mainAxisSize: MainAxisSize.max,
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          _searchPageUIField(),
          _searchPageUIList(),
        ],
      );
    });
  }

  Widget _searchPageUIField() {
    return Container(
      height: widget.deviceHeight * 0.08,
      width: widget.deviceWidth,
      padding: EdgeInsets.symmetric(vertical: widget.deviceHeight * 0.02),
      child: TextField(
        autocorrect: false,
        style: TextStyle(
          color: Colors.white,
        ),
        onChanged: (_input) {
          setState(() {
            _searchText = _input;
          });
        },
        decoration: InputDecoration(
          prefixIcon: Icon(Icons.search),
          labelText: "search",
          labelStyle: TextStyle(color: Colors.white),
          border: OutlineInputBorder(borderSide: BorderSide.none),
        ),
      ),
    );
  }

  Widget _searchPageUIList() {
    return StreamBuilder<List<User>>(
        stream: MessagingProviders.instance.getAllUsers(_searchText.trim()),
        builder: (_, _snapshot) {
          if (_snapshot.hasData) {
            _usersData = _snapshot.data!
                .where((_data) => _data.id != widget._auth.user!.$id)
                .toList();
          }
          return _snapshot.hasData
                  ? SizedBox(
                      height: widget.deviceHeight * 0.70,
                      child: ListView.builder(
                          itemCount: _usersData.length,
                          itemBuilder: (_, _index) {
                            var _userData = _usersData[_index];
                            var _isUserActive = _userData.lastSeen.isBefore(
                              DateTime.now().toUtc().subtract(
                                    Duration(
                                      minutes: 1,
                                    ),
                                  ),
                            );
                            return ListTile(
                              enabled: true,
                              onTap: () async {
                                String _chatId;
                                String _linkId =
                                    '${widget._auth.user!.$id}${_userData.id}';

                                _chatId = await MessagingProviders.instance
                                    .getConversationLink(
                                        _linkId.substring(0, 36));

                                if (_chatId.isEmpty) {
                                  List<dynamic> _members = [
                                    widget._auth.user!.$id,
                                    _userData.id
                                  ];

                                  List<String> messagesTemp = [];
                                  messagesTemp = [
                                    json.encode({
                                      widget._auth.user!.$id: [],
                                    }),
                                    json.encode({
                                      _userData.id: [],
                                    })
                                  ];

                                  Map<String, dynamic> _chat = {
                                    "ownerId": widget._auth.user!.$id,
                                    "members": _members,
                                    "messages": messagesTemp
                                  };
                                  _chatId = await MessagingProviders.instance
                                      .newMesaage(_chat);
                                }

                                NavigationService.instance.navigateToRoute(
                                  MaterialPageRoute(
                                    builder: (BuildContext _context) {
                                      return ConversationsPage(
                                        chatId: _chatId,
                                        chatName: _userData.name,
                                        chatImage: _userData.image,
                                      );
                                    },
                                  ),
                                );
                              },
                              title: Text(_userData.name),
                              leading: Container(
                                width: 50,
                                height: 50,
                                decoration: BoxDecoration(
                                  borderRadius: BorderRadius.circular(100),
                                  image: DecorationImage(
                                    fit: BoxFit.cover,
                                    image: NetworkImage(_userData.image),
                                  ),
                                ),
                              ),
                              trailing: Column(
                                mainAxisAlignment:
                                    MainAxisAlignment.spaceEvenly,
                                mainAxisSize: MainAxisSize.max,
                                crossAxisAlignment: CrossAxisAlignment.end,
                                children: [
                                  _isUserActive
                                      ? Text(
                                          "last seen",
                                          style: TextStyle(
                                            fontSize: 15,
                                          ),
                                        )
                                      : Text(
                                          "active",
                                          style: TextStyle(
                                            fontSize: 15,
                                          ),
                                        ),
                                  _isUserActive
                                      ? Text(
                                          timeago.format(
                                            _userData.lastSeen,
                                          ),
                                          style: TextStyle(fontSize: 15),
                                        )
                                      : Container(
                                          height: 10,
                                          width: 10,
                                          decoration: BoxDecoration(
                                            color: Colors.blue,
                                            borderRadius:
                                                BorderRadius.circular(100),
                                          ),
                                        )
                                ],
                              ),
                            );
                          }),
                    )
                  : Container()
              // : SpinKitWanderingCubes(
              //     color: Colors.blue,
              //     size: 50.0,
              //   );
              ;
        });
  }
}