using System;
using Cirno.Scripts.Components.Actors;
using Godot;

namespace Cirno.Scripts.Components.FSM.Player;

public partial class Active : PlayerFSMState
{
    private Vector2 _movementDirection { get; set; }
    public Vector2 FacingDirection { get; private set; } = Vector2.Down;
    
    [Export]
    public int Speed { get; set; } = 45;

    [Export]
    public int StrafeSpeed { get; set; } = 35;
    
    [ExportCategory("Providers")]
    [Export]
    private PlayerWeaponProvider _weaponProvider;
    [Export]
    private PlayerAnimationProvider _animationProvider;
    [Export]
    private PlayerCrosshairProvider _crosshairProvider;
    [Export] private PlayerHitboxSpriteProvider _hitboxSpriteProvider;

    [Export]
    private InputProvider _inputProvider;

    [Export] private PlayerDamageReceiver _damageReceiver;
    [Export] private ActivationProvider _activationProvider;

    private bool _isStrafing;
    
    public int MovementSpeed => _isStrafing ? StrafeSpeed : Speed;

    private PlayerStateMachine _player;
    
    private Hud _hud;

    public override void Init(ActorStateMachine stateMachine)
    {
        base.Init(stateMachine);

        _hud = Hud.Instance;

        _player = (PlayerStateMachine)stateMachine;

        _damageReceiver.Death += () =>
        {
            ChangeState(PlayerState.Dead);
        };

        _damageReceiver.HealthChanged += (value, maxValue) =>
        {
            _animationProvider.Blink();
            _hud.UpdateHealth(value, maxValue);
        };

        _damageReceiver.ShieldChanged += (value, maxValue) =>
        {
            _animationProvider.PlayShieldAnimation();
            _hud.UpdateShield(value, maxValue);
        };
        
        _damageReceiver.Init();
        
        _damageReceiver.RefillHealth();
        _damageReceiver.RefillShield();
        
        _activationProvider.Init(stateMachine);
        
        //_weaponProvider = stateMachine.GetNode<PlayerWeaponProvider>("WeaponProvider");
        //_animationProvider = stateMachine.GetNode<PlayerAnimationProvider>("AnimationProvider");

        _weaponProvider.Init(stateMachine);
    }

    public override void EnterState()
    {
        // enable sprite
        // enable crosshair
        _crosshairProvider.Show();
        _animationProvider.ShowSprite();
        _damageReceiver.Enabled = true;
        _activationProvider.Enabled = true;
    }

    public override void ExitState()
    {
        _animationProvider.SetAnimation(Vector2.Zero);
        _crosshairProvider.Hide();
        _hitboxSpriteProvider.Hide();
        
        _damageReceiver.Enabled = false;
        _activationProvider.Enabled = false;
    }

    public override void PhysicsProcessState(double delta)
    {
        _stateMachine.Velocity = _movementDirection * MovementSpeed;

        _stateMachine.MoveAndSlide();
    }

    public override void ProcessState(double delta)
    {
        _movementDirection = _inputProvider.GetMovementInput().Normalized();
        _isStrafing = _inputProvider.GetStrafePressed();

        // Toggle visibility of the hitbox sprite based on strafing
        _hitboxSpriteProvider.SetVisibility(_isStrafing);
        
        var rightStickInput = _inputProvider.GetAimInput().Normalized();

        // Update Facing Direction
        if (!_isStrafing)
        {
            if (rightStickInput.Length() > 0.1f) // If the right stick is moved
            {
                FacingDirection = rightStickInput.Normalized();
            }
            else if (_movementDirection != Vector2.Zero) // Fall back to movement direction
            {
                FacingDirection = _movementDirection;
            }
        }

        _animationProvider.SetAnimation(_stateMachine.Velocity);

        _crosshairProvider.UpdatePosition(FacingDirection);
        
        HandleShoot();
        
        HandleInteraction();
        // FindInteractable();

        // _crosshair.Position = CalculateCrosshairPosition();

        if (_inputProvider.GetInventoryJustPressed())
        {
            GameManager.Instance.ChangeState(GameState.Inventory);
        }

        if (_inputProvider.GetPauseJustPressed())
        {
            //CallDeferred(MethodName.PauseDeferred);
            PauseDeferred();
        }
    }

    private void PauseDeferred()
    {
        GameManager.Instance.Pause();
    }

    private void HandleShoot()
    {
        if (!_inputProvider.GetShootPressed()) return;
        _weaponProvider.Shoot(this.FacingDirection);
    }

    private void HandleInteraction()
    {
        _activationProvider.HandleInteraction();
    }
}