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


#include "Player/LMPlayer.h"

#include "KismetTraceUtils.h"
#include "LMUserSettings.h"
#include "LMUtils.h"
#include "Camera/CameraComponent.h"
#include "Ammo/LMAmmo.h"
#include "Player/LMBulletInfo.h"
#include "Player/LMHealthComponent.h"
#include "Player/LMHitBox.h"
#include "Player/LMMovementComponent.h"
#include "Weapon/LMWeaponManager.h"


ALMPlayer::ALMPlayer(const FObjectInitializer& ObjectInitializer)
	: Super(ObjectInitializer.SetDefaultSubobjectClass<ULMMovementComponent>(CharacterMovementComponentName))
{
	LegumixMovementComponent = Cast<ULMMovementComponent>(GetCharacterMovement());
	LedgeGrabOrigin = CreateDefaultSubobject<USceneComponent>("LedgeGrabOrigin");
	LedgeGrabOrigin->SetupAttachment(RootComponent);
	
	PrimaryActorTick.bCanEverTick = true;

	SpreadStream = FRandomStream(FMath::Rand());
	HealthComponent = CreateDefaultSubobject<ULMHealthComponent>(TEXT("HealthComponent"));

	HitPeriodLengthInSeconds = 15.f;
	bHitPeriodInProgress = false;
	TimeOfTheLastDamage = 0.f;
	HealthAtTheCurrentHitPeriodBeginning = 100.f;
	CumulatedDamagesOnCurrentHitPeriod = 0.f;
	PlayerViewOcclusionPercent = 0.f;
	NextPlayerViewOcclusionPercent = 0.f;
	PlayerViewOcclusionPercent = 0.f;
	AlphaLerpForPlayerViewOcclusionPercent = 0.f;
}

void ALMPlayer::BeginPlay()
{
	Super::BeginPlay();
	WeaponManager->WeaponFired.AddUniqueDynamic(this, &ALMPlayer::WeaponFired);
	WeaponManager->WeaponSwitched.AddUniqueDynamic(this, &ALMPlayer::WeaponSwitched);

	GetCamera()->SetFieldOfView(ULMUserSettings::GetLegumixUserSettings()->FieldOfView);

	HealthComponent->OnHealthChanged.AddDynamic(this, &ALMPlayer::SetDisplayDamageParameters);

	MovementModeChangedDelegate.AddUniqueDynamic(this, &ALMPlayer::MovementChanged);
}

void ALMPlayer::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);
	
	if(bHitPeriodInProgress == true)
	{
		double TimeElapsedSinceLastDamage = GetWorld()->GetTimeSeconds() - TimeOfTheLastDamage;
		if(TimeElapsedSinceLastDamage > HitPeriodLengthInSeconds)
		{
			if(bHitPeriodInProgress == true)
			{
				bHitPeriodInProgress = false;
				PlayerViewOcclusionPercent = NextPlayerViewOcclusionPercent;
				NextPlayerViewOcclusionPercent = 0.f;
				AlphaLerpForPlayerViewOcclusionPercent = 0.f;
				TimeOfTheLastDamage = 0.f;
				CumulatedDamagesOnCurrentHitPeriod = 0.f;
			}
		}
	}
	
	if(PlayerViewOcclusionPercent != NextPlayerViewOcclusionPercent)
	{
		AlphaLerpForPlayerViewOcclusionPercent = FMath::Clamp(AlphaLerpForPlayerViewOcclusionPercent + DeltaTime, 0, 1);
		PlayerViewOcclusionPercent = FMath::Lerp(PlayerViewOcclusionPercent, NextPlayerViewOcclusionPercent, AlphaLerpForPlayerViewOcclusionPercent);
		DamageDynamicMaterialInstance->SetScalarParameterValue("PlayerViewOcclusionPercent", PlayerViewOcclusionPercent);	
	}
	else if(PlayerViewOcclusionPercent == NextPlayerViewOcclusionPercent)
	{
		AlphaLerpForPlayerViewOcclusionPercent = 0;
	}
}


bool ALMPlayer::PickUpAmmo(ALMAmmo* Ammo)
{
	if (GEngine)
	{
		const FString AmmoAmount = FString::Printf(TEXT("Quantité de munition : %i"), Ammo->GetAmmoAmount());
		GEngine->AddOnScreenDebugMessage(INDEX_NONE, 30.f, FColor::Red, AmmoAmount);
	}
	
	if (WeaponManager->AddAmmoType(Ammo->GetAmmoType(), Ammo->GetAmmoAmount()))
	{
		OnAmmoPickup();
		return  true;
	}
	return false;
}

int ALMPlayer::GetAmmoCount(const EAmmoType AmmoType) const
{
	return WeaponManager->GetAmmoCount(AmmoType);
}

int ALMPlayer::RemoveAmmo(const EAmmoType AmmoType, const int Count) const
{
	return WeaponManager->RemoveAmmo(AmmoType, Count);
}

bool ALMPlayer::CanJumpInternal_Implementation() const
{
	return JumpIsAllowedInternal();
}

void ALMPlayer::SetWeaponManager(ULMWeaponManager* Manager)
{
	UE_LOG(LogTemp, Warning, TEXT("Set weapon manager"))
	if (!Manager)
	{
		GEngine->AddOnScreenDebugMessage(INDEX_NONE, 10.f, FColor::Red, TEXT("No Weapon Manager was given to the player !"));
		return;
	}
	
	WeaponManager = Manager;
	WeaponManager->Initialize(GetArms());
}

void ALMPlayer::PlayAnimation(UAnimMontage* Animation)
{
	UAnimInstance* AnimInstance = GetArms()->GetAnimInstance();
	if (AnimInstance && Animation)
	{
		AnimInstance->Montage_Play(Animation);
	}
}

void ALMPlayer::FireBullets(const FLMBulletInfo Settings)
{
	FVector EndLocation;
	FVector ShotVector;
	FHitResult OutHit = FHitResult();
	bool HitSomething = false;

	OnFire();

#if WITH_EDITOR
	if (bDrawBulletDebug)
		DrawDebugLine(GetWorld(), Settings.Origin, Settings.Origin + (Settings.Direction * Settings.MaxDistance), FColor::Blue, false, 2.f);
#endif

	for (int Shots = 0; Shots < Settings.BulletCount; Shots++)
	{
		ShotVector = UKismetMathLibrary::RandomUnitVectorInConeInDegreesFromStream(SpreadStream, Settings.Direction, Settings.Spread);
		EndLocation = Settings.Origin + (ShotVector * Settings.MaxDistance);

		const bool HasHit = GetWorld()->LineTraceSingleByChannel(OutHit, Settings.Origin, EndLocation, TRACE_BULLET);

#if WITH_EDITOR
		if (bDrawBulletDebug)
			DrawDebugLineTraceSingle(GetWorld(), Settings.Origin, EndLocation, EDrawDebugTrace::ForDuration, HasHit, OutHit, FColor::Green, FColor::Red, 2.f);
#endif
		
		WeaponManager->CreateTracer(Settings.AmmoType, HasHit ? OutHit.Location : EndLocation, ShotVector.Rotation());
		
		if (!HasHit)
			continue;
		
		if (ULMHitBox* HitBox = Cast<ULMHitBox>(OutHit.Component))
		{
			if (!HitBox->CanBeHitByTeam(Team))
				continue;
			
			HitSomething = true;
			HitBox->OnHit(Settings, OutHit);
		}
	}

	if (HitSomething)
	{
		OnEnnemyHit();
	}
}

FVector ALMPlayer::GetWeaponFiringOrigin()
{
	if (!GetCam())
	{
		GEngine->AddOnScreenDebugMessage(INDEX_NONE, 10.f, FColor::Silver, TEXT("No camera ???"));
		return FVector::ZeroVector;
	}
	return GetCam()->GetComponentTransform().GetLocation();
}

FVector ALMPlayer::GetAimVector() { return GetCam()->GetForwardVector(); }

void ALMPlayer::OnPause_Implementation(bool Paused)
{
}

UCameraComponent* ALMPlayer::GetCam()
{
	if (!Camera)
		Camera = GetCamera();
	
	return Camera;
}

USkeletalMeshComponent* ALMPlayer::GetArms()
{
	if (!ArmsMesh)
		ArmsMesh = GetArmsBP();

	return ArmsMesh;
}

void ALMPlayer::SetDisplayDamageParameters(float Health, float Damage)
{
	if (bHitPeriodInProgress == false)
	{
		HealthAtTheCurrentHitPeriodBeginning = Health;
		bHitPeriodInProgress  = true;
	}
	TimeOfTheLastDamage = GetWorld()->GetTimeSeconds();
	CumulatedDamagesOnCurrentHitPeriod += Damage;
	SetPlayerViewOcclusionPercent();
}


void ALMPlayer::SetPlayerViewOcclusionPercent()
{
	AlphaLerpForPlayerViewOcclusionPercent = 0;
	PlayerViewOcclusionPercent = NextPlayerViewOcclusionPercent;
	NextPlayerViewOcclusionPercent = CumulatedDamagesOnCurrentHitPeriod / HealthAtTheCurrentHitPeriodBeginning;
}

void ALMPlayer::MovementChanged(ACharacter* Character, EMovementMode PrevMovementMode, uint8 PreviousCustomMode)
{
	if (GetCharacterMovement()->MovementMode == MOVE_Falling)
	{
		GetWorldTimerManager().SetTimer(LedgeGrabCheckTimer, this, &ALMPlayer::DoLedgeGrabCheck, LedgeGrabPollTime, true);
	}
	else if (PrevMovementMode == MOVE_Falling)
	{
		GetWorldTimerManager().ClearTimer(LedgeGrabCheckTimer);
	}
}

void ALMPlayer::DoLedgeGrabCheck()
{
	FVector Origin = LedgeGrabOrigin->GetComponentLocation();
	FVector Dir = LedgeGrabOrigin->GetUpVector() * FVector(0, 0, -LedgeGrabTraceLength);
	FVector Ray = Origin + Dir;

	FHitResult Hit;
	const bool Results = UKismetSystemLibrary::LineTraceSingleByProfile(GetWorld(), Origin, Ray, TEXT("BlockAll"), false
		, {}, EDrawDebugTrace::None, Hit, true, FLinearColor::Red, FLinearColor::Green, 0.2f);
	if (Results)
	{
		FVector TeleportLocation = FVector(Hit.Location.X, Hit.Location.Y, Hit.Location.Z + GetCapsuleComponent()->GetScaledCapsuleHalfHeight());
		SetActorLocation(TeleportLocation, false, nullptr, ETeleportType::ResetPhysics);
	}
}

FCollisionQueryParams ALMPlayer::GetIgnoreCharacterParams()
{
	FCollisionQueryParams Params;

	TArray<AActor*> ChildrenActors;
	GetAllChildActors(ChildrenActors);
	Params.AddIgnoredActors(ChildrenActors);
	Params.AddIgnoredActor(this);

	return Params;
}