Lesson 66 - Displaying Fleet Data

Source/DedicatedServers/Private/UI/APITest/APITestManager.cpp

@@ -5,13 +5,12 @@
 #include "HttpModule.h"
 #include "JsonObjectConverter.h"
 #include "Data/API/APIData.h"
-#include "DedicatedServers/DedicatedServers.h"
 #include "GameplayTags/DedicatedServerTags.h"
 #include "Interfaces/IHttpResponse.h"
 #include "UI/HTTP/HTTPRequestTypes.h"
 
 
-void UAPITestManager::ListFleetsButtonClicked()
+void UAPITestManager::ListFleets()
 {
 	check(APIData);
 	
@@ -24,50 +23,26 @@ void UAPITestManager::ListFleetsButtonClicked()
 	Request->SetVerb("GET");
 	Request->SetHeader("Content-Type", "application/json");
 	Request->ProcessRequest();
-	
-	GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Red, "List Fleets Request Made");
 }
 
 void UAPITestManager::ListFleets_Response(FHttpRequestPtr Request, FHttpResponsePtr Response, bool bWasSuccessful)
 {
-	GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Red, "List Fleets Response Received");
-	
 	TSharedPtr<FJsonObject> JsonObject;
 	TSharedRef<TJsonReader<>> JsonReader = TJsonReaderFactory<>::Create(Response->GetContentAsString());
 	
 	if (FJsonSerializer::Deserialize(JsonReader, JsonObject))
 	{
-		if (JsonObject->HasField(TEXT("errorType")) || JsonObject->HasField(TEXT("errorMessage")))
+		if (ContainsErrors(JsonObject))
 		{
-			FString ErrorType = JsonObject->HasField(TEXT("errorType")) ? JsonObject->GetStringField(TEXT("errorType")) : FString("Unknown Error");
-			FString ErrorMessage = JsonObject->HasField(TEXT("errorMessage")) ? JsonObject->GetStringField(TEXT("errorMessage")) : FString("Unknown Error Message");
-			
-			UE_LOGFMT(LogDedicatedServers, Error, "Error Type: {ErrorType}", ErrorType);
-			UE_LOGFMT(LogDedicatedServers, Error, "Error Message: {ErrorMessage}", ErrorMessage);
-			
+			OnListFleetsResponseReceived.Broadcast(FDSListFleetsResponse(), false);
 			return;
 		}
 		
-		if (JsonObject->HasField(TEXT("$fault")))
-		{
-			FString ErrorType = JsonObject->HasField(TEXT("name")) ? JsonObject->GetStringField(TEXT("name")) : FString("Unknown Error");
-			UE_LOGFMT(LogDedicatedServers, Error, "Error Type: {ErrorType}", ErrorType);
-			return;
-		}
-		
-		
-		
-		if (JsonObject->HasField(TEXT("$metadata")))
-		{
-			TSharedPtr<FJsonObject> MetaDataJsonObject = JsonObject->GetObjectField(TEXT("$metadata"));
-			FDSMetaData DSMetaData;
-			FJsonObjectConverter::JsonObjectToUStruct(MetaDataJsonObject.ToSharedRef(), &DSMetaData);
-			
-			DSMetaData.Dump();
-		}
+		DumpMetadata(JsonObject);
 	
 		FDSListFleetsResponse ListFleetsResponse;
 		FJsonObjectConverter::JsonObjectToUStruct(JsonObject.ToSharedRef(), &ListFleetsResponse);
+		OnListFleetsResponseReceived.Broadcast(ListFleetsResponse, true);
 		ListFleetsResponse.Dump();
 	}
 }

Source/DedicatedServers/Private/UI/APITest/APITestOverlay.cpp

@@ -3,9 +3,14 @@
 
 #include "UI/APITest/APITestOverlay.h"
 
+#include "Blueprint/WidgetLayoutLibrary.h"
 #include "Components/Button.h"
+#include "Components/ScrollBox.h"
+#include "Components/TextBlock.h"
+#include "UI/API/ListFleets/FleetId.h"
 #include "UI/API/ListFleets/ListFleetsBox.h"
 #include "UI/APITest/APITestManager.h"
+#include "UI/HTTP/HTTPRequestTypes.h"
 
 void UAPITestOverlay::NativeConstruct()
 {
@@ -16,6 +21,39 @@ void UAPITestOverlay::NativeConstruct()
 
 	check(ListFleetsBox)
 	check(ListFleetsBox->Button_ListFleets)
-	ListFleetsBox->Button_ListFleets->OnClicked.AddDynamic(APITestManager, &UAPITestManager::ListFleetsButtonClicked);
-	
+	ListFleetsBox->Button_ListFleets->OnClicked.AddDynamic(this, &UAPITestOverlay::ListFleetsButtonClicked);
+}
+
+void UAPITestOverlay::ListFleetsButtonClicked()
+{
+	check (APITestManager)
+	APITestManager->OnListFleetsResponseReceived.AddDynamic(this, &UAPITestOverlay::OnListFleetsResponseReceived);
+	APITestManager->ListFleets();
+	ListFleetsBox->Button_ListFleets->SetIsEnabled(false);
+}
+
+void UAPITestOverlay::OnListFleetsResponseReceived(const FDSListFleetsResponse& ListFleetsResponse, bool bWasSuccessful)
+{
+	if (APITestManager->OnListFleetsResponseReceived.IsAlreadyBound(this, &UAPITestOverlay::OnListFleetsResponseReceived))
+	{
+		APITestManager->OnListFleetsResponseReceived.RemoveDynamic(this, &UAPITestOverlay::OnListFleetsResponseReceived);
+	}
+	ListFleetsBox->ScrollBox_ListFleets->ClearChildren();
+	check(FleetIdWidgetClass);
+	if (bWasSuccessful)
+	{
+		for (const FString& FleetId : ListFleetsResponse.FleetIds)
+		{
+			UFleetId* FleetIdWidget = CreateWidget<UFleetId>(this, FleetIdWidgetClass);
+			FleetIdWidget->TextBlock_FleetId->SetText(FText::FromString(FleetId));
+			ListFleetsBox->ScrollBox_ListFleets->AddChild(FleetIdWidget);
+		}
+	}
+	else
+	{
+		UFleetId* FleetIdWidget = CreateWidget<UFleetId>(this, FleetIdWidgetClass);
+		FleetIdWidget->TextBlock_FleetId->SetText(FText::FromString("Something went wrong!"));
+		ListFleetsBox->ScrollBox_ListFleets->AddChild(FleetIdWidget);
+	}
+	ListFleetsBox->Button_ListFleets->SetIsEnabled(true);
 }

Source/DedicatedServers/Private/UI/HTTP/HTTPRequestManager.cpp

@@ -2,3 +2,47 @@
 
 
 #include "UI/HTTP/HTTPRequestManager.h"
+
+#include "JsonObjectConverter.h"
+#include "DedicatedServers/DedicatedServers.h"
+#include "UI/HTTP/HTTPRequestTypes.h"
+
+bool UHTTPRequestManager::ContainsErrors(TSharedPtr<FJsonObject> JsonObject, bool bLogErrors)
+{
+	if (JsonObject->HasField(TEXT("errorType")) || JsonObject->HasField(TEXT("errorMessage")))
+	{
+		FString ErrorType = JsonObject->HasField(TEXT("errorType")) ? JsonObject->GetStringField(TEXT("errorType")) : FString("Unknown Error");
+		FString ErrorMessage = JsonObject->HasField(TEXT("errorMessage")) ? JsonObject->GetStringField(TEXT("errorMessage")) : FString("Unknown Error Message");
+	
+		if (bLogErrors)
+		{
+			UE_LOGFMT(LogDedicatedServers, Error, "Error Type: {ErrorType}", ErrorType);
+			UE_LOGFMT(LogDedicatedServers, Error, "Error Message: {ErrorMessage}", ErrorMessage);
+		}	
+		return true;
+	}
+		
+	if (JsonObject->HasField(TEXT("$fault")))
+	{
+		FString ErrorType = JsonObject->HasField(TEXT("name")) ? JsonObject->GetStringField(TEXT("name")) : FString("Unknown Error");
+		
+		if (bLogErrors)
+		{
+			UE_LOGFMT(LogDedicatedServers, Error, "Error Type: {ErrorType}", ErrorType);
+		}
+		return true;
+	}
+	return false;
+}
+
+void UHTTPRequestManager::DumpMetadata(TSharedPtr<FJsonObject> JsonObject)
+{
+	if (JsonObject->HasField(TEXT("$metadata")))
+	{
+		TSharedPtr<FJsonObject> MetaDataJsonObject = JsonObject->GetObjectField(TEXT("$metadata"));
+		FDSMetaData DSMetaData;
+		FJsonObjectConverter::JsonObjectToUStruct(MetaDataJsonObject.ToSharedRef(), &DSMetaData);
+			
+		DSMetaData.Dump();
+	}
+}

Source/DedicatedServers/Public/UI/APITest/APITestManager.h

@@ -7,6 +7,9 @@
 #include "UI/HTTP/HTTPRequestManager.h"
 #include "APITestManager.generated.h"
 
+DECLARE_DYNAMIC_MULTICAST_DELEGATE_TwoParams(FOnListFleetsResponseReceived, const FDSListFleetsResponse&, ListFleetsResponse, bool, bWasSuccessful);
+
+
 /**
  * 
  */
@@ -18,7 +21,10 @@ class DEDICATEDSERVERS_API UAPITestManager : public UHTTPRequestManager
 public:
 	
 	UFUNCTION()
-	void ListFleetsButtonClicked();
+	void ListFleets();
+	
+	UPROPERTY()
+	FOnListFleetsResponseReceived OnListFleetsResponseReceived;
 	
 	void ListFleets_Response(FHttpRequestPtr Request, FHttpResponsePtr Response, bool bWasSuccessful);
 };

Source/DedicatedServers/Public/UI/APITest/APITestOverlay.h

@@ -8,6 +8,9 @@
 
 class UListFleetsBox;
 class UAPITestManager;
+struct FDSListFleetsResponse;
+class UFleetId;
+
 /**
  * 
  */
@@ -21,6 +24,9 @@ public:
 	UPROPERTY(EditDefaultsOnly)
 	TSubclassOf<UAPITestManager> APITestManagerClass;
 	
+	UPROPERTY(EditDefaultsOnly)
+	TSubclassOf<UFleetId> FleetIdWidgetClass;
+	
 protected:
 	
 	virtual void NativeConstruct() override;
@@ -33,4 +39,10 @@ private:
 	UPROPERTY()
 	TObjectPtr<UAPITestManager> APITestManager;
 	
+	UFUNCTION()
+	void ListFleetsButtonClicked();
+	
+	UFUNCTION()
+	void OnListFleetsResponseReceived(const FDSListFleetsResponse& ListFleetsResponse, bool bWasSuccessful);
+	
 };

Source/DedicatedServers/Public/UI/HTTP/HTTPRequestManager.h

@@ -7,6 +7,7 @@
 #include "HTTPRequestManager.generated.h"
 
 class UAPIData;
+class FJsonObject;
 
 /**
  * 
@@ -20,4 +21,7 @@ protected:
 	
 	UPROPERTY(EditDefaultsOnly)
 	TObjectPtr<UAPIData> APIData;
+	
+	bool ContainsErrors(TSharedPtr<FJsonObject> JsonObject, bool bLogErrors = true);
+	void DumpMetadata(TSharedPtr<FJsonObject> JsonObject);
 };