// Copyright Echo Devgroup

#include "AbilitySystemBlueprintLibrary.h"
#include "Player/AuraPlayerController.h"

#include "AuraGameplayTags.h"
#include "EnhancedInputSubsystems.h"
#include "AbilitySystem/AuraAbilitySystemComponent.h"
#include "AbilitySystem/AuraAbilitySystemLibrary.h"
#include "Components/SplineComponent.h"
#include "Input/AuraInputComponent.h"
#include "Interact/EnemyInterface.h"

AAuraPlayerController::AAuraPlayerController()
{
	bReplicates = true;

	Spline = CreateDefaultSubobject<USplineComponent>("Spline");
}

void AAuraPlayerController::PlayerTick(float DeltaTime)
{
	Super::PlayerTick(DeltaTime);

	CursorTrace();
}

void AAuraPlayerController::CursorTrace()
{
	FHitResult CursorHit;
	GetHitResultUnderCursor(ECC_Visibility, false, CursorHit);
	if (!CursorHit.bBlockingHit) return;
	AActor* HitActor = CursorHit.GetActor();
	IEnemyInterface* Enemy = Cast<IEnemyInterface>(HitActor);

	LastActor = ThisActor;
	ThisActor = Enemy;

	/**
	 *Line trace from curso. There are several scenarios
	 *	A. LastActor is null && ThisActor is null
	 *		- Do nothing
	 *	B. LastActor is null && ThisActor is valid
	 *		- Highlight ThisActor
	 *	C. LastActor is valid && ThisActor is null
	 *		- UnHighlight LastActor
	 *	D. LastAcrot is valid && ThisActor is valid but not equal
	 *		- UnHighligh LastActor
	 *		- Highlight ThisActor
	 *	E. LastActor is same as ThisActor
	 *		- Do Nothing
	 */
	
	if (LastActor == nullptr)
	{
		if (ThisActor != nullptr)
		{
			//Case B
			ThisActor->HighlightActor();
			//UE_LOG(LogTemp, Warning, TEXT("Case B"));
		}
	}
	else //LastActor is Valid
	{
		if (ThisActor == nullptr)
		{
			LastActor->UnHighlightActor();
		} 
		else
		{
			if (LastActor != ThisActor) // Case D
			{
				LastActor->UnHighlightActor();
				ThisActor->HighlightActor();
			}
		}
		
	}

}

void AAuraPlayerController::AbilityInputTagPressed(FGameplayTag InputTag)
{
	//For Debug of key pressed
	//GEngine->AddOnScreenDebugMessage(1, 3.f, FColor::Red, *InputTag.ToString());

	//Are we targetting something?
	if (InputTag.MatchesTagExact(FAuraGameplayTags::Get().Input_InputTag_LMB))
	{
		bTargeting = ThisActor ? true : false;
		bAutoRunning = false;
	}
	
}

void AAuraPlayerController::AbilityInputTagReleased(FGameplayTag InputTag)
{
	
	//For Debug of Key Held
	//GEngine->AddOnScreenDebugMessage(1, 3.f, FColor::Red, *InputTag.ToString());

	if (GetASC() == nullptr) return;
	GetASC()->AbilityInputTagReleased(InputTag);
}

void AAuraPlayerController::AbilityInputTagHeld(FGameplayTag InputTag)
{
	//For Debug of Key Held
	//GEngine->AddOnScreenDebugMessage(1, 3.f, FColor::Red, *InputTag.ToString());
	
	if (!InputTag.MatchesTagExact(FAuraGameplayTags::Get().Input_InputTag_LMB))
	{
		if (GetASC() == nullptr) return;
		GetASC()->AbilityInputTagHeld(InputTag);
	}
	if (bTargeting)
	{
		if (GetASC())
		{
			GetASC()->AbilityInputTagHeld(InputTag);
		}
	}
	else
	{
		FollowTime += GetWorld()->GetDeltaSeconds(); //Add delta seconds to FollowTime
		FHitResult Hit;
		if (GetHitResultUnderCursor(ECC_Visibility, false, Hit))
		{
			CachedDestination = Hit.Location;
		}

		if (APawn* ControlledPawn = GetPawn())
		{
			const FVector WorldDirection = (CachedDestination - ControlledPawn->GetActorLocation()).GetSafeNormal();
			ControlledPawn->AddMovementInput(WorldDirection);
		}
	}
	
}

UAuraAbilitySystemComponent* AAuraPlayerController::GetASC()
{
	if (AuraAbilitySystemComponent == nullptr)
	{
		AuraAbilitySystemComponent = Cast<UAuraAbilitySystemComponent>(UAbilitySystemBlueprintLibrary::GetAbilitySystemComponent(GetPawn<APawn>()));
	}
	return AuraAbilitySystemComponent;
}

/* //cheated and skipped ahead to try and fix error :(
void AAuraPlayerController::HightlightActor(AActor* Actor)
{
	
}

void AAuraPlayerController::UnHightlightActor(AActor* Actor)
{
	
}
*/

void AAuraPlayerController::BeginPlay()
{
	Super::BeginPlay();
	check(AuraContext);

	UEnhancedInputLocalPlayerSubsystem* Subsystem = ULocalPlayer::GetSubsystem<UEnhancedInputLocalPlayerSubsystem>(GetLocalPlayer());
	if (Subsystem)
	{
		Subsystem->AddMappingContext(AuraContext,0);
	}

	bShowMouseCursor = true;
	DefaultMouseCursor = EMouseCursor::Default;

	FInputModeGameAndUI InputModeData;
	InputModeData.SetLockMouseToViewportBehavior(EMouseLockMode::DoNotLock);
	InputModeData.SetHideCursorDuringCapture(false);
	SetInputMode(InputModeData);
	
}

void AAuraPlayerController::SetupInputComponent()
{
	Super::SetupInputComponent();

	UAuraInputComponent* AuraInputComponent = CastChecked<UAuraInputComponent>(InputComponent);
	AuraInputComponent->BindAction(MoveAction, ETriggerEvent::Triggered, this, &AAuraPlayerController::Move);

	AuraInputComponent->BindAbilityActions(InputConfig, this, &ThisClass::AbilityInputTagPressed, &ThisClass::AbilityInputTagHeld, &ThisClass::AbilityInputTagHeld);
}

void AAuraPlayerController::Move(const FInputActionValue& InputActionValue)
{
	const FVector2D InputAxisVector = InputActionValue.Get<FVector2D>();
	const FRotator Rotation = GetControlRotation();
	const FRotator YawRotation(0.f, Rotation.Yaw, 0.f);
	
	const FVector ForwardDirection = FRotationMatrix(YawRotation).GetUnitAxis(EAxis::X);
	const FVector RightDirection = FRotationMatrix(YawRotation).GetUnitAxis(EAxis::Y);
	
	if (APawn* ControlledPawn = GetPawn<APawn>())
	{
		ControlledPawn->AddMovementInput(ForwardDirection, InputAxisVector.Y);
		ControlledPawn->AddMovementInput(RightDirection, InputAxisVector.X);
	}
}