refact: optimize, ID search peers (#10853)

* refact: optimize, preload peers

Signed-off-by: fufesou <linlong1266@gmail.com>

* Update dialogs.dart

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
Co-authored-by: RustDesk <71636191+rustdesk@users.noreply.github.com>

flutter/lib/models/ab_model.dart

@@ -58,6 +58,9 @@ class AbModel {
   String? _personalAbGuid;
   RxBool legacyMode = false.obs;
 
+  // Only handles peers add/remove
+  final Map<String, VoidCallback> _peerIdUpdateListeners = {};
+
   final sortTags = shouldSortTags().obs;
   final filterByIntersection = filterAbTagByIntersection().obs;
 
@@ -188,6 +191,7 @@ class AbModel {
         debugPrint("pull current Ab error: $e");
       }
     }
+    _callbackPeerUpdate();
     if (listInitialized && current.initialized) {
       _saveCache();
     }
@@ -419,6 +423,7 @@ class AbModel {
         }
       });
     }
+    _callbackPeerUpdate();
     return ret;
   }
 
@@ -620,6 +625,9 @@ class AbModel {
           }
         }
       }
+      if (abEntries.isNotEmpty) {
+        _callbackPeerUpdate();
+      }
     }
   }
 
@@ -742,6 +750,20 @@ class AbModel {
     }
   }
 
+  void _callbackPeerUpdate() {
+    for (var listener in _peerIdUpdateListeners.values) {
+      listener();
+    }
+  }
+
+  void addPeerUpdateListener(String key, VoidCallback listener) {
+    _peerIdUpdateListeners[key] = listener;
+  }
+
+  void removePeerUpdateListener(String key) {
+    _peerIdUpdateListeners.remove(key);
+  }
+
 // #endregion
 }
 

flutter/lib/models/group_model.dart

@@ -23,6 +23,8 @@ class GroupModel {
   var _cacheLoadOnceFlag = false;
   var _statusCode = 200;
 
+  final Map<String, VoidCallback> _peerIdUpdateListeners = {};
+
   bool get emtpy => deviceGroups.isEmpty && users.isEmpty && peers.isEmpty;
 
   late final Peers peersModel;
@@ -92,6 +94,7 @@ class GroupModel {
         .map((e) => e.online = true)
         .toList();
     groupLoadError.value = '';
+    _callbackPeerUpdate();
   }
 
   Future<bool> _getDeviceGroups(
@@ -329,6 +332,7 @@ class GroupModel {
         for (final peer in data['peers']) {
           peers.add(Peer.fromJson(peer));
         }
+        _callbackPeerUpdate();
       }
     } catch (e) {
       debugPrint("load group cache: $e");
@@ -343,4 +347,18 @@ class GroupModel {
     selectedAccessibleItemName.value = '';
     await bind.mainClearGroup();
   }
+
+  void _callbackPeerUpdate() {
+    for (var listener in _peerIdUpdateListeners.values) {
+      listener();
+    }
+  }
+
+  void addPeerUpdateListener(String key, VoidCallback listener) {
+    _peerIdUpdateListeners[key] = listener;
+  }
+
+  void removePeerUpdateListener(String key) {
+    _peerIdUpdateListeners.remove(key);
+  }
 }

flutter/lib/models/peer_model.dart

@@ -165,6 +165,11 @@ class Peers extends ChangeNotifier {
   final String name;
   final String loadEvent;
   List<Peer> peers = List.empty(growable: true);
+  // Part of the peers that are not in the rest peers list.
+  // When there're too many peers, we may want to load the front 100 peers first,
+  // so we can see peers in UI quickly. `restPeerIds` is the rest peers' ids.
+  // And then load all peers later.
+  List<String> restPeerIds = List.empty(growable: true);
   final GetInitPeers? getInitPeers;
   UpdateEvent event = UpdateEvent.load;
   static const _cbQueryOnlines = 'callback_query_onlines';
@@ -238,6 +243,12 @@ class Peers extends ChangeNotifier {
     } else {
       peers = _decodePeers(evt['peers']);
     }
+
+    restPeerIds = [];
+    if (evt['ids'] != null) {
+      restPeerIds = (evt['ids'] as String).split(',');
+    }
+
     for (var peer in peers) {
       final state = onlineStates[peer.id];
       peer.online = state != null && state != false;