FString UVaRestJsonObject::EncodeJsonToSingleString() const
{
FString OutputString = EncodeJson();
// Remove line terminators
OutputString.Replace(LINE_TERMINATOR, TEXT(""));
// Remove tabs
OutputString.Replace(LINE_TERMINATOR, TEXT("\t"));
return OutputString;
}
bool USocketIOClientComponent::CallBPFunctionWithResponse(UObject* Target, const FString& FunctionName, TArray<TSharedPtr<FJsonValue>> Response)
{
if (!Target->IsValidLowLevel())
{
UE_LOG(SocketIOLog, Warning, TEXT("CallFunctionByNameWithArguments: Target not found for '%s'"), *FunctionName);
return false;
}
UFunction* Function = Target->FindFunction(FName(*FunctionName));
if (nullptr == Function)
{
UE_LOG(SocketIOLog, Warning, TEXT("CallFunctionByNameWithArguments: Function not found '%s'"), *FunctionName);
return false;
}
//Check function signature
TFieldIterator<UProperty> Iterator(Function);
TArray<UProperty*> Properties;
while (Iterator && (Iterator->PropertyFlags & CPF_Parm))
{
UProperty* Prop = *Iterator;
Properties.Add(Prop);
++Iterator;
}
auto ResponseJsonValue = USIOJConvert::ToSIOJsonValue(Response);
bool bResponseNumNotZero = Response.Num() > 0;
bool bNoFunctionParams = Properties.Num() == 0;
bool bNullResponse = ResponseJsonValue->IsNull();
if (bNullResponse && bNoFunctionParams)
{
Target->ProcessEvent(Function, nullptr);
return true;
}
else if (bResponseNumNotZero)
{
//function has too few params
if (bNoFunctionParams)
{
UE_LOG(SocketIOLog, Warning, TEXT("CallFunctionByNameWithArguments: Function '%s' has too few parameters, callback parameters ignored : <%s>"), *FunctionName, *ResponseJsonValue->EncodeJson());
Target->ProcessEvent(Function, nullptr);
return true;
}
struct FDynamicArgs
{
void* Arg01 = nullptr;
USIOJsonValue* Arg02 = nullptr;
};
//create the container
FDynamicArgs Args = FDynamicArgs();
//add the full response array as second param
Args.Arg02 = ResponseJsonValue;
const FString& FirstParam = Properties[0]->GetCPPType();
auto FirstFJsonValue = Response[0];
//Is first param...
//SIOJsonValue?
if (FirstParam.Equals("USIOJsonValue*"))
{
//convenience wrapper, response is a single object
USIOJsonValue* Value = NewObject<USIOJsonValue>();
Value->SetRootValue(FirstFJsonValue);
Args.Arg01 = Value;
Target->ProcessEvent(Function, &Args);
return true;
}
//SIOJsonObject?
else if (FirstParam.Equals("USIOJsonObject*"))
{
//convenience wrapper, response is a single object
USIOJsonObject* ObjectValue = NewObject<USIOJsonObject>();
ObjectValue->SetRootObject(FirstFJsonValue->AsObject());
Args.Arg01 = ObjectValue;
Target->ProcessEvent(Function, &Args);
return true;
}
//String?
else if (FirstParam.Equals("FString"))
{
FString StringValue = USIOJConvert::ToJsonString(FirstFJsonValue);
Target->ProcessEvent(Function, &StringValue);
return true;
}
//Float?
else if (FirstParam.Equals("float"))
{
float NumberValue = (float)FirstFJsonValue->AsNumber();
Target->ProcessEvent(Function, &NumberValue);
return true;
}
//Int?
else if (FirstParam.Equals("int32"))
{
int NumberValue = (int)FirstFJsonValue->AsNumber();
Target->ProcessEvent(Function, &NumberValue);
return true;
}
//bool?
else if (FirstParam.Equals("bool"))
{
bool BoolValue = FirstFJsonValue->AsBool();
Target->ProcessEvent(Function, &BoolValue);
return true;
}
//array?
else if (FirstParam.Equals("TArray"))
{
UArrayProperty* ArrayProp = Cast<UArrayProperty>(Properties[0]);
FString Inner;
ArrayProp->GetCPPMacroType(Inner);
//byte array is the only supported version
if (Inner.Equals("uint8"))
{
TArray<uint8> Bytes = ResponseJsonValue->AsArray()[0]->AsBinary();
Target->ProcessEvent(Function, &Bytes);
return true;
}
}
}
UE_LOG(SocketIOLog, Warning, TEXT("CallFunctionByNameWithArguments: Function '%s' signature not supported expected <%s>"), *FunctionName, *ResponseJsonValue->EncodeJson());
return false;
}