#include "EnemySpaceship.h"
#include "SpaceshipPawn.h"
#include "SpaceshipProjectile.h"
#include "Kismet/GameplayStatics.h"

AEnemySpaceship::AEnemySpaceship()
{
    PrimaryActorTick.bCanEverTick = true;

    ShipMesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("ShipMesh"));
    RootComponent = ShipMesh;

    CurrentHealth = MaxHealth;
}

void AEnemySpaceship::BeginPlay()
{
    Super::BeginPlay();

    PlayerPawn = Cast<ASpaceshipPawn>(UGameplayStatics::GetPlayerPawn(GetWorld(), 0));
    GetWorldTimerManager().SetTimer(FireTimerHandle, this, &AEnemySpaceship::FireAtPlayer, FireRate, true);
}

void AEnemySpaceship::Tick(float DeltaTime)
{
    Super::Tick(DeltaTime);

    if (PlayerPawn)
    {
        // Calculate distance to player
        float DistanceToPlayer = FVector::Dist(GetActorLocation(), PlayerPawn->GetActorLocation());

        if (DistanceToPlayer <= DetectionRange)
        {
            // Look at player
            FVector Direction = PlayerPawn->GetActorLocation() - GetActorLocation();
            FRotator NewRotation = Direction.Rotation();
            SetActorRotation(FMath::RInterpTo(GetActorRotation(), NewRotation, DeltaTime, 2.0f));

            // Move towards player while maintaining some distance
            float TargetDistance = 1000.0f;
            if (DistanceToPlayer > TargetDistance)
            {
                FVector NewLocation = GetActorLocation() + (Direction.GetSafeNormal() * MovementSpeed * DeltaTime);
                SetActorLocation(NewLocation);
            }
            else if (DistanceToPlayer < TargetDistance - 100.0f)
            {
                FVector NewLocation = GetActorLocation() - (Direction.GetSafeNormal() * MovementSpeed * DeltaTime);
                SetActorLocation(NewLocation);
            }
        }
    }
}

void AEnemySpaceship::FireAtPlayer()
{
    if (PlayerPawn && FVector::Dist(GetActorLocation(), PlayerPawn->GetActorLocation()) <= DetectionRange)
    {
        UWorld* World = GetWorld();
        if (World)
        {
            FVector SpawnLocation = GetActorLocation() + (GetActorForwardVector() * 100.0f);
            FRotator SpawnRotation = GetActorRotation();
            FActorSpawnParameters SpawnParams;
            SpawnParams.Owner = this;
            SpawnParams.Instigator = GetInstigator();

            ASpaceshipProjectile* Projectile = World->SpawnActor<ASpaceshipProjectile>(
                ASpaceshipProjectile::StaticClass(),
                SpawnLocation,
                SpawnRotation,
                SpawnParams
            );
        }
    }
}

float AEnemySpaceship::TakeDamage(float Damage, FDamageEvent const& DamageEvent,
    AController* EventInstigator, AActor* DamageCauser)
{
    float ActualDamage = Super::TakeDamage(Damage, DamageEvent, EventInstigator, DamageCauser);

    CurrentHealth -= ActualDamage;
    if (CurrentHealth <= 0)
    {
        // Destroy the enemy ship
        Destroy();
    }

    return ActualDamage;
}