// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Subsystems/EngineSubsystem.h"
#include "DTFluxRemoteMessage.h"
#include "HttpRouteHandle.h"
#include "IHttpRouter.h"
#include "DTFluxRemoteSubsystem.generated.h"

DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnTitleReceived, const FDTFluxRemoteTitleData&, TitleData);
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnTitleBibReceived, const FDTFluxRemoteBibData&, TitleBibData);
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnCommandReceived, const FDTFluxRemoteCommandData&, CommandData);

/**
 * 
 */
UCLASS(BlueprintType, Category="DTFlux|Remote")
class DTFLUXREMOTE_API UDTFluxRemoteSubsystem : public UEngineSubsystem
{
	GENERATED_BODY()
public:
	public:
    virtual void Initialize(FSubsystemCollectionBase& Collection) override;
    virtual void Deinitialize() override;

    UPROPERTY(BlueprintAssignable, Category = "DTFlux API")
    FOnTitleReceived OnTitleReceived;

    UPROPERTY(BlueprintAssignable, Category = "DTFlux API")
    FOnTitleBibReceived OnTitleBibReceived;

    UPROPERTY(BlueprintAssignable, Category = "DTFlux API")
    FOnCommandReceived OnCommandReceived;

    UFUNCTION(BlueprintCallable, Category = "DTFlux API")
    bool StartHTTPServer(int32 Port = 63350);

    UFUNCTION(BlueprintCallable, Category = "DTFlux API")
    void StopHTTPServer();

    UFUNCTION(BlueprintCallable, Category = "DTFlux API", BlueprintPure)
    bool IsHTTPServerRunning() const;

    UFUNCTION(BlueprintCallable, Category = "DTFlux API", BlueprintPure)
    int32 GetServerPort() const { return ServerPort; }

    // Manual data processing (for testing)
    UFUNCTION(BlueprintCallable, Category = "DTFlux API")
    bool ProcessTitleData(const FString& JsonString);

    UFUNCTION(BlueprintCallable, Category = "DTFlux API")
    bool ProcessTitleBibData(const FString& JsonString);

    UFUNCTION(BlueprintCallable, Category = "DTFlux API")
    bool ProcessCommandData(const FString& JsonString);

private:
    void SetupRoutes();
    
    bool HandleTitleRequest(const FHttpServerRequest& Request, const FHttpResultCallback& OnComplete);
    bool HandleTitleBibRequest(const FHttpServerRequest& Request, const FHttpResultCallback& OnComplete);
    bool HandleCommandsRequest(const FHttpServerRequest& Request, const FHttpResultCallback& OnComplete);
    
    TSharedPtr<FJsonObject> ParseJsonFromRequest(const FHttpServerRequest& Request);
    FString CreateSuccessResponse(const FString& Message = TEXT("Success"));
    FString CreateErrorResponse(const FString& Error, int32 Code = 400);
    
    bool ParseTitleData(const TSharedPtr<FJsonObject>& JsonObject, FDTFluxRemoteTitleData& OutData);
    bool ParseTitleBibData(const TSharedPtr<FJsonObject>& JsonObject, FDTFluxRemoteBibData& OutData);
    bool ParseCommandData(const TSharedPtr<FJsonObject>& JsonObject, FDTFluxRemoteCommandData& OutData);

private:
    TSharedPtr<IHttpRouter> HttpRouter;
    int32 ServerPort = 63350;
    bool bServerRunning = false;

    FHttpRouteHandle TitleRouteHandle;
    FHttpRouteHandle TitleBibRouteHandle;
    FHttpRouteHandle CommandsRouteHandle;
};