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

ASpaceShooterGameMode::ASpaceShooterGameMode()
{
    // Set default pawn class using the inherited DefaultPawnClass
    static ConstructorHelpers::FClassFinder<APawn> PlayerPawnBPClass(TEXT("/Game/Blueprints/BP_SpaceshipPawn"));
    if (PlayerPawnBPClass.Class != nullptr)
    {
        DefaultPawnClass = PlayerPawnBPClass.Class;
    }

    // Enable Tick()
    PrimaryActorTick.bCanEverTick = true;

    // Debug message
    if (GEngine)
    {
        GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Yellow, TEXT("GameMode Constructor"));
    }
}

void ASpaceShooterGameMode::StartPlay()
{
    Super::StartPlay();

    // Start spawning enemies
    GetWorldTimerManager().SetTimer(EnemySpawnTimer, this, &ASpaceShooterGameMode::SpawnEnemy,
        EnemySpawnInterval, true);

    // Debug message
    if (GEngine)
    {
        GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Green, TEXT("GameMode StartPlay"));
    }
}

void ASpaceShooterGameMode::Tick(float DeltaTime)
{
    Super::Tick(DeltaTime);
}

void ASpaceShooterGameMode::SpawnEnemy()
{
    // Count current enemies
    TArray<AActor*> FoundEnemies;
    UGameplayStatics::GetAllActorsOfClass(GetWorld(), AEnemySpaceship::StaticClass(), FoundEnemies);

    // Only spawn if we haven't reached the maximum
    if (FoundEnemies.Num() < MaxEnemies)
    {
        UWorld* World = GetWorld();
        if (World)
        {
            FVector SpawnLocation = GetRandomSpawnLocation();
            FRotator SpawnRotation = FRotator::ZeroRotator;
            FActorSpawnParameters SpawnParams;
            SpawnParams.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AdjustIfPossibleButAlwaysSpawn;

            World->SpawnActor<AEnemySpaceship>(AEnemySpaceship::StaticClass(), SpawnLocation,
                SpawnRotation, SpawnParams);
        }
    }
}

FVector ASpaceShooterGameMode::GetRandomSpawnLocation()
{
    APlayerController* PlayerController = UGameplayStatics::GetPlayerController(GetWorld(), 0);
    if (PlayerController && PlayerController->GetPawn())
    {
        FVector PlayerLocation = PlayerController->GetPawn()->GetActorLocation();

        // Generate random angle
        float Angle = FMath::RandRange(0.0f, 2.0f * PI);

        // Calculate spawn position in a circle around the player
        FVector SpawnLocation;
        SpawnLocation.X = PlayerLocation.X + SpawnRadius * FMath::Cos(Angle);
        SpawnLocation.Y = PlayerLocation.Y + SpawnRadius * FMath::Sin(Angle);
        SpawnLocation.Z = PlayerLocation.Z;

        return SpawnLocation;
    }

    return FVector::ZeroVector;
}