getC2CHistoryMessageList method

Implementation

Future<V2TimValueCallback<List<V2TimMessage>>> getC2CHistoryMessageList({
  required String userID,
  required int count,
  String? lastMsgID,
}) async {
  if (!TIMManager.instance.isInitSDK()) {
    return V2TimValueCallback<List<V2TimMessage>>(code: TIMErrCode.ERR_SDK_NOT_INITIALIZED.value, desc: "sdk not init");
  }

  if (userID.isEmpty) {
    return V2TimValueCallback<List<V2TimMessage>>(code: TIMErrCode.ERR_INVALID_PARAMETERS.value, desc: "userID is empty");
  }

  V2TimMessage? lastMessage;
  if (lastMsgID != null) {
    V2TimValueCallback<List<V2TimMessage>> findResult = await findMessages(messageIDList: [lastMsgID]);
    if (findResult.code != TIMErrCode.ERR_SUCC.value) {
      print("getC2CHistoryMessageList, find last message failed");
      return V2TimValueCallback<List<V2TimMessage>>(code: findResult.code, desc: findResult.desc);
    }

    List<V2TimMessage> msgList = findResult.data!;
    if (msgList.isNotEmpty) {
      lastMessage = msgList[0];
    }
  }

  String userData = Tools.generateUserData('getC2CHistoryMessageList');
  Completer<V2TimValueCallback<List<V2TimMessage>>> completer = Completer();
  NativeLibraryManager.timValueCallback2Future<List<V2TimMessage>>(userData, completer);

  V2TimMessageGetHistoryMessageListParam param = V2TimMessageGetHistoryMessageListParam(count: count, getType: HistoryMsgGetTypeEnum.V2TIM_GET_CLOUD_OLDER_MSG, lastMessage: lastMessage);
  Pointer<Char> pParam = Tools.string2PointerChar(json.encode(param.toJson()));
  Pointer<Char> pUserID = Tools.string2PointerChar(userID);
  Pointer<Void> pUserData = Tools.string2PointerVoid(userData);
  NativeLibraryManager.bindings.DartGetHistoryMessageList(pUserID, TIMConvType.kTIMConv_C2C, pParam, pUserData);

  return completer.future;
}