Merge branch 'dev-shareContacts' into dev-shareContact

lib/connector/meshcore_protocol.dart

@@ -102,6 +102,14 @@ class BufferWriter {
     }
     writeBytes(bytes);
   }
+
+  void writeHex(String hex) {
+    List<int> result = [];
+    for (int i = 0; i < hex.length ~/ 2; i++) {
+      result.add(int.parse(hex.substring(i * 2, i * 2 + 2), radix: 16));
+    }
+    writeBytes(Uint8List.fromList(result));
+  }
 }
 
 // Command codes (to device)
@@ -164,6 +172,7 @@ const int respCodeContactMsgRecv = 7;
 const int respCodeChannelMsgRecv = 8;
 const int respCodeCurrTime = 9;
 const int respCodeNoMoreMessages = 10;
+const int respCodeExportContact = 11;
 const int respCodeBattAndStorage = 12;
 const int respCodeDeviceInfo = 13;
 const int respCodeContactMsgRecvV3 = 16;
@@ -728,4 +737,22 @@ Uint8List buildTraceReq(int tag, int auth, int flag, {Uint8List? payload})
     writer.writeBytes(payload);
   }
   return writer.toBytes();
+}
+
+// Build a export contact frame
+// [cmd][pub_key x32 / if empty exports your contact info]
+Uint8List buildExportContactFrame(Uint8List pubKey) {
+  final writer = BufferWriter();
+  writer.writeByte(cmdExportContact);
+  writer.writeBytes(pubKey);
+  return writer.toBytes();
+}
+
+// Build a import contact frame
+// [cmd][contact_frame x98+]
+Uint8List buildImportContactFrame(String contactFrame) {
+  final writer = BufferWriter();
+  writer.writeByte(cmdImportContact);
+  writer.writeHex(contactFrame);
+  return writer.toBytes();
 }