rustdesk/flutter/lib/desktop/pages/connection_page.dart

// main window right pane

import 'dart:async';
import 'dart:convert';
import 'dart:io';

import 'package:auto_size_text/auto_size_text.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hbb/consts.dart';
import 'package:flutter_hbb/models/state_model.dart';
import 'package:get/get.dart';
import 'package:url_launcher/url_launcher_string.dart';
import 'package:window_manager/window_manager.dart';
import 'package:flutter_hbb/models/peer_model.dart';

import '../../common.dart';
import '../../common/formatter/id_formatter.dart';
import '../../common/widgets/peer_tab_page.dart';
import '../../models/platform_model.dart';
import '../widgets/button.dart';

/// Connection page for connecting to a remote peer.
class ConnectionPage extends StatefulWidget {
  const ConnectionPage({Key? key}) : super(key: key);

  @override
  State<ConnectionPage> createState() => _ConnectionPageState();
}

/// State for the connection page.
class _ConnectionPageState extends State<ConnectionPage>
    with SingleTickerProviderStateMixin, WindowListener {
  /// Controller for the id input bar.
  final _idController = IDTextEditingController();

  Timer? _updateTimer;

  final RxBool _idInputFocused = false.obs;
  final FocusNode _idFocusNode = FocusNode();

  var svcStopped = Get.find<RxBool>(tag: 'stop-service');
  var svcIsUsingPublicServer = true.obs;

  bool isWindowMinimized = false;
  List<Peer> peers = [];

  @override
  void initState() {
    super.initState();
    if (_idController.text.isEmpty) {
      () async {
        final lastRemoteId = await bind.mainGetLastRemoteId();
        if (lastRemoteId != _idController.id) {
          setState(() {
            _idController.id = lastRemoteId;
          });
        }
      }();
    }
    _updateTimer = periodic_immediate(Duration(seconds: 1), () async {
      updateStatus();
    });
    _idFocusNode.addListener(() {
      _idInputFocused.value = _idFocusNode.hasFocus;
      // select all to faciliate removing text, just following the behavior of address input of chrome
      _idController.selection = TextSelection(
          baseOffset: 0, extentOffset: _idController.value.text.length);
    });
    Get.put<IDTextEditingController>(_idController);
    windowManager.addListener(this);
  }

  @override
  void dispose() {
    _idController.dispose();
    _updateTimer?.cancel();
    windowManager.removeListener(this);
    if (Get.isRegistered<IDTextEditingController>()) {
      Get.delete<IDTextEditingController>();
    }
    super.dispose();
  }

  @override
  void onWindowEvent(String eventName) {
    super.onWindowEvent(eventName);
    if (eventName == 'minimize') {
      isWindowMinimized = true;
    } else if (eventName == 'maximize' || eventName == 'restore') {
      if (isWindowMinimized && Platform.isWindows) {
        // windows can't update when minimized.
        Get.forceAppUpdate();
      }
      isWindowMinimized = false;
    }
  }

  @override
  void onWindowEnterFullScreen() {
    // Remove edge border by setting the value to zero.
    stateGlobal.resizeEdgeSize.value = 0;
  }

  @override
  void onWindowLeaveFullScreen() {
    // Restore edge border to default edge size.
    stateGlobal.resizeEdgeSize.value =
        stateGlobal.isMaximized.isTrue ? kMaximizeEdgeSize : kWindowEdgeSize;
  }

  @override
  void onWindowClose() {
    super.onWindowClose();
    bind.mainOnMainWindowClose();
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        Expanded(
            child: Column(
          children: [
            Row(
              children: [
                Flexible(child: _buildRemoteIDTextField(context)),
              ],
            ).marginOnly(top: 22),
            SizedBox(height: 12),
            Divider().paddingOnly(right: 12),
            Expanded(child: PeerTabPage()),
          ],
        ).paddingOnly(left: 12.0)),
        const Divider(height: 1),
        buildStatus()
      ],
    );
  }

  /// Callback for the connect button.
  /// Connects to the selected peer.
  void onConnect({bool isFileTransfer = false}) {
    var id = _idController.id;
    connect(context, id, isFileTransfer: isFileTransfer);
  }

  /// UI for the remote ID TextField.
  /// Search for a peer and connect to it if the id exists.
  Widget _buildRemoteIDTextField(BuildContext context) {
    final TextEditingController fieldTextEditingController = TextEditingController.fromValue(_idController.value);
    var w = Container(
      width: 320 + 20 * 2,
      padding: const EdgeInsets.fromLTRB(20, 24, 20, 22),
      decoration: BoxDecoration(
          borderRadius: const BorderRadius.all(Radius.circular(13)),
          border: Border.all(color: Theme.of(context).colorScheme.background)),
      child: Ink(
        child: Column(
          children: [
            Row(
              children: [
                Expanded(
                  child: AutoSizeText(
                    translate('Control Remote Desktop'),
                    maxLines: 1,
                    style: Theme.of(context)
                        .textTheme
                        .titleLarge
                        ?.merge(TextStyle(height: 1)),
                  ),
                ),
              ],
            ).marginOnly(bottom: 15),
            Row(
              children: [
                Expanded(
                  child: 
                   Autocomplete<Peer>(
                    optionsBuilder: (TextEditingValue textEditingValue) {
                      if (textEditingValue.text == '') {
                        return const Iterable<Peer>.empty();
                      }
                      else {
                      peers.clear();
                      Map<String, dynamic> recentPeers = jsonDecode(bind.mainLoadRecentPeersSync());
                      Map<String, dynamic> favPeers = jsonDecode(bind.mainLoadFavPeersSync());
                      Map<String, dynamic> lanPeers = jsonDecode(bind.mainLoadLanPeersSync());
                      Map<String, dynamic> abPeers = jsonDecode(bind.mainLoadAbSync());
                      Map<String, dynamic> groupPeers = jsonDecode(bind.mainLoadGroupSync());

                      Map<String, dynamic> combinedPeers = {};

                      void mergePeers(Map<String, dynamic> peers) {
                        if (peers.containsKey("peers")) {
                          dynamic peerData = peers["peers"];

                          if (peerData is String) {
                            try {
                              peerData = jsonDecode(peerData);
                            } catch (e) {
                              print("Error decoding peers: $e");
                              return;
                            }
                          }

                          if (peerData is List) {
                            for (var peer in peerData) {
                              if (peer is Map && peer.containsKey("id")) {
                                String id = peer["id"];
                                if (id != null && !combinedPeers.containsKey(id)) {
                                  combinedPeers[id] = peer;
                                }
                              }
                            }
                          }
                        }
                      }

                      mergePeers(recentPeers);
                      mergePeers(favPeers);
                      mergePeers(lanPeers);
                      mergePeers(abPeers);
                      mergePeers(groupPeers);

                      for (var peer in combinedPeers.values) {
                        peers.add(Peer.fromJson(peer));
                      }

                      return peers.where((peer) =>
                      peer.id.toLowerCase().contains(textEditingValue.text.toLowerCase()) ||
                      peer.username.toLowerCase().contains(textEditingValue.text.toLowerCase()) ||
                      peer.hostname.toLowerCase().contains(textEditingValue.text.toLowerCase()) ||
                      peer.platform.toLowerCase().contains(textEditingValue.text.toLowerCase()))
                          .toList();
                      }
                    },

                    fieldViewBuilder: (BuildContext context,
                        TextEditingController fieldTextEditingController,
                        FocusNode fieldFocusNode ,
                        VoidCallback onFieldSubmitted,

                        ) {
                      return Obx(() =>
                      TextField(
                        maxLength: 90,
                        autocorrect: false,
                        enableSuggestions: false,
                        keyboardType: TextInputType.visiblePassword,
                        // focusNode: _idFocusNode,
                        focusNode: fieldFocusNode,
                        style: const TextStyle(
                          fontFamily: 'WorkSans',
                          fontSize: 22,
                          height: 1.4,
                        ),
                        maxLines: 1,
                        cursorColor: Theme.of(context).textTheme.titleLarge?.color,
                        decoration: InputDecoration(
                            filled: false,
                            counterText: '',
                            hintText: _idInputFocused.value
                                ? null
                                : translate('Enter Remote ID'),
                            contentPadding: const EdgeInsets.symmetric(
                                horizontal: 15, vertical: 13)),
                        // controller: _idController,
                        controller: fieldTextEditingController,
                        inputFormatters: [IDTextInputFormatter()],
                        onSubmitted: (s) {
                          onConnect();
                        },
                      ));
                    },
                    optionsViewBuilder: (BuildContext context, AutocompleteOnSelected<Peer> onSelected, Iterable<Peer> options) {
                    return Align(
                      alignment: Alignment.topLeft,
                      child: Material(
                        elevation: 4.0,
                        child: ConstrainedBox(
                          constraints: BoxConstraints(
                            maxHeight: 200.0,
                          ),
                          child: SingleChildScrollView(
                            child: Column(
                              mainAxisSize: MainAxisSize.min,
                              children: options.map((peer) {
                                return ListTile(
                                  // title: Text(peer.id),
                                  title: Text(peer.id.length <= 6 ? peer.id : peer.id.substring(0, 6)),
                                  subtitle: Row(
                                    crossAxisAlignment: CrossAxisAlignment.start,
                                    children: [
                                      Text(peer.username),
                                      Text(peer.hostname),
                                      Text(peer.platform),
                                    for (var tag in peer.tags)
                                      Text(tag),
                                    ],
                                  ),
                                  onTap: () {
                                    onSelected(peer);
                                  },
                                );
                              }).toList(),
                            ))))
                      );
                    },
                  )
                ),
              ],
            ),
            Padding(
              padding: const EdgeInsets.only(top: 13.0),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.end,
                children: [
                  Button(
                    isOutline: true,
                    onTap: () => onConnect(isFileTransfer: true),
                    text: "Transfer File",
                  ),
                  const SizedBox(
                    width: 17,
                  ),
                  Button(onTap: onConnect, text: "Connect"),
                ],
              ),
            )
          ],
        ),
      ),
    );
    return Container(
        constraints: const BoxConstraints(maxWidth: 600), child: w);
  }

  Widget buildStatus() {
    final em = 14.0;
    return Container(
      height: 3 * em,
      child: Obx(() => Row(
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Container(
                height: 8,
                width: 8,
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(4),
                  color: svcStopped.value ||
                          stateGlobal.svcStatus.value == SvcStatus.connecting
                      ? kColorWarn
                      : (stateGlobal.svcStatus.value == SvcStatus.ready
                          ? Color.fromARGB(255, 50, 190, 166)
                          : Color.fromARGB(255, 224, 79, 95)),
                ),
              ).marginSymmetric(horizontal: em),
              Text(
                  svcStopped.value
                      ? translate("Service is not running")
                      : stateGlobal.svcStatus.value == SvcStatus.connecting
                          ? translate("connecting_status")
                          : stateGlobal.svcStatus.value == SvcStatus.notReady
                              ? translate("not_ready_status")
                              : translate('Ready'),
                  style: TextStyle(fontSize: em)),
              // stop
              Offstage(
                offstage: !svcStopped.value,
                child: InkWell(
                        onTap: () async {
                          await start_service(true);
                        },
                        child: Text(translate("Start Service"),
                            style: TextStyle(
                                decoration: TextDecoration.underline,
                                fontSize: em)))
                    .marginOnly(left: em),
              ),
              // ready && public
              Flexible(
                child: Offstage(
                  offstage: !(!svcStopped.value &&
                      stateGlobal.svcStatus.value == SvcStatus.ready &&
                      svcIsUsingPublicServer.value),
                  child: Row(
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: [
                      Text(', ', style: TextStyle(fontSize: em)),
                      Flexible(
                        child: InkWell(
                          onTap: onUsePublicServerGuide,
                          child: Row(
                            children: [
                              Flexible(
                                child: Text(
                                  translate('setup_server_tip'),
                                  style: TextStyle(
                                      decoration: TextDecoration.underline,
                                      fontSize: em),
                                ),
                              ),
                            ],
                          ),
                        ),
                      )
                    ],
                  ),
                ),
              )
            ],
          )),
    );
  }

  void onUsePublicServerGuide() {
    const url = "https://rustdesk.com/blog/id-relay-set/";
    canLaunchUrlString(url).then((can) {
      if (can) {
        launchUrlString(url);
      }
    });
  }

  updateStatus() async {
    final status =
        jsonDecode(await bind.mainGetConnectStatus()) as Map<String, dynamic>;
    final statusNum = status['status_num'] as int;
    final preStatus = stateGlobal.svcStatus.value;
    if (statusNum == 0) {
      stateGlobal.svcStatus.value = SvcStatus.connecting;
    } else if (statusNum == -1) {
      stateGlobal.svcStatus.value = SvcStatus.notReady;
    } else if (statusNum == 1) {
      stateGlobal.svcStatus.value = SvcStatus.ready;
      if (preStatus != SvcStatus.ready) {
        gFFI.userModel.refreshCurrentUser();
      }
    } else {
      stateGlobal.svcStatus.value = SvcStatus.notReady;
    }
    svcIsUsingPublicServer.value = await bind.mainIsUsingPublicServer();
  }
}