using Godot;
using System.Linq;

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

   public Player OwnerPlayer;

   [Export]
   protected float _speed = 3.0f;

   public bool CanShoot { get; protected set; }

   public bool CanShootAlt { get; protected set; }

   protected GameManager _gameManager;

   private bool isPaused;

   public override void _EnterTree()
   {
      Position = OwnerPlayer.SpawnPoint.Position;
      CanShoot = true;
      CanShootAlt = 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 _Input(InputEvent @event)
   {
      if (Input.IsActionJustPressed("exit"))
         GetTree().Quit();

      if (Input.IsActionJustPressed(OwnerPlayer.PlayerInput.Fire()) && CanShoot)
         Fire();
      if (Input.IsActionJustPressed(OwnerPlayer.PlayerInput.AltFire()) && CanShootAlt)
         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();
      direction = new Vector3(direction.X, 0, direction.Z);
      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<Node3D>();
      projectile.Position = Position;
      GetParent().AddChild(projectile);
      var projectiles = projectile.GetChildren().OfType<Projectile>();
      foreach (var proj in projectiles)
      {
         if (proj.HasRotation)
            proj.Rotation = GetNode<Node3D>("Pivot").Rotation;
      }
      CanShoot = false;
      await ToSignal(GetTree().CreateTimer(projectiles.First().Cooldown), "timeout");
      CanShoot = true;
   }

   private async void AltFire()
   {
      var projectile = _altFireProjectile.Instantiate<Node3D>();
      projectile.Position = Position;
      GetParent().AddChild(projectile);
      var projectiles = projectile.GetChildren().OfType<Projectile>();
      foreach (var proj in projectiles)
      {
         if (proj.HasRotation)
            proj.Rotation = GetNode<Node3D>("Pivot").Rotation;
      }
      CanShootAlt = false;
      await ToSignal(GetTree().CreateTimer(projectiles.First().Cooldown), "timeout");
      CanShootAlt = true;
   }

   public void OnHit(Node3D node)
   {
      OwnerPlayer.SelectedCharacter.Position = new Vector3(0, 0, -20);
      _gameManager.CallDeferred(GameManager.MethodName.RemoveCharacter, OwnerPlayer);
   }
}