using Godot;

public partial class Character : CharacterBody3D
{
   [Export]
   protected PackedScene _fireProjectile;
   [Export]
   protected PackedScene _altFireProjectile;

   protected Player _ownerPlayer;

   [Export]
   protected float _speed = 3.0f;

   public bool CanShoot { get; protected set; }

   protected GameManager _gameManager;

   public override void _EnterTree()
   {
      CanShoot = true;
      _gameManager = GetTree().Root.GetNode<GameManager>("Main/GameManager");
   }

   public void Initialize(Player ownerPlayer)
   {
      _ownerPlayer = ownerPlayer;
   }

   public override void _PhysicsProcess(double delta)
   {
      Velocity = CalculateCharacterMovement(delta);
      MoveAndSlide();
   }

   public override void _UnhandledInput(InputEvent @event)
   {
      if (Input.IsActionJustPressed("exit"))
         GetTree().Quit();

      if (Input.IsActionJustPressed(_ownerPlayer.PlayerInput.Fire()) && CanShoot)
         Fire();
      if (Input.IsActionJustPressed(_ownerPlayer.PlayerInput.AltFire()) && CanShoot)
         AltFire();
   }

   private Vector3 CalculateCharacterMovement(double delta)
   {
      var velocity = Velocity;

      var inputDir = Input.GetVector(_ownerPlayer.PlayerInput.Left(), _ownerPlayer.PlayerInput.Right(), _ownerPlayer.PlayerInput.Up(), _ownerPlayer.PlayerInput.Down());
      var direction = (Transform.Basis * new Vector3(inputDir.X, 0, inputDir.Y)).Normalized();
      if (direction != Vector3.Zero)
      {
         velocity.X = direction.X * _speed;
         velocity.Z = direction.Z * _speed;
         GetNode<Node3D>("Pivot").LookAt(Position + direction, Vector3.Up);
      }
      else
      {
         velocity.X = Mathf.MoveToward(Velocity.X, 0, _speed);
         velocity.Z = Mathf.MoveToward(Velocity.Z, 0, _speed);
      }
      return velocity;
   }

   private async void Fire()
   {
      var projectile = _fireProjectile.Instantiate<Projectile>();
      projectile.Position = Position + new Vector3(0f, 1f, 0f);
      projectile.ParentCharacter = this;
      GetParent().AddChild(projectile);
      CanShoot = false;
      await ToSignal(GetTree().CreateTimer(projectile.Cooldown), "timeout");
      CanShoot = true;
   }

   private async void AltFire()
   {
      var projectile = _altFireProjectile.Instantiate<Projectile>();
      projectile.Position = Position + new Vector3(0f, 1f, 0f);
      projectile.ParentCharacter = this;
      GetParent().AddChild(projectile);
      CanShoot = false;
      await ToSignal(GetTree().CreateTimer(projectile.Cooldown), "timeout");
      CanShoot = true;
   }

   public void OnHit(Node3D node)
   {
      if (this != null)
         _gameManager.CallDeferred(GameManager.MethodName.RemoveCharacter, _ownerPlayer);
   }
}