using Cirno.Scripts.Components.Actors;
using Cirno.Scripts.Components.Actors._3D;
using Cirno.Scripts.Controllers;
using Godot;

namespace Cirno.Scripts.Components.FSM._3DPlayer;

public partial class Dead : BaseState<PlayerState, CharacterBody3D>
{
    public override PlayerState StateId => PlayerState.Dead;
    
    private ActorResourceProvider _motivationProvider;
    private InputProvider _inputProvider;

    private ActorResourceProvider _healthProvider;
    
    private PlayerAnimationProvider3D _animationProvider;

    private bool _isGameOver;

    public override void Init(IStateMachine<PlayerState, CharacterBody3D> machine)
    {
        base.Init(machine);
        // try to obtain common providers via modules/storage
        if (machine is IsoPlayerStateMachine sm)
        {
            var storage = sm.Storage;
            // store references if present on storage
            _motivationProvider = storage.Root.GetNodeOrNull<ActorResourceProvider>("MotivationProvider");
            _healthProvider = storage.Root.GetNodeOrNull<ActorResourceProvider>("HealthProvider");
        }
        // fallback to searching on the actor
        _motivationProvider ??= StateMachine.GetModule<ActorResourceProvider>();
        _healthProvider ??= StateMachine.GetModule<ActorResourceProvider>();

        _animationProvider ??= StateMachine.GetModule<PlayerAnimationProvider3D>();

        // The input provider was not initialized after the FSM refactor which caused
        // a NullReferenceException in ProcessState when accessing it. Try to obtain
        // it from the state machine modules as well. If it's still null, ProcessState
        // will early-return to avoid throwing.
        _inputProvider ??= StateMachine.GetModule<InputProvider>();

    }

    public override void EnterState()
    {
        base.EnterState();
        //MainObject.Hide();
        
        // Play death animation if provider is available
        _animationProvider?.PlayDeathAnimation();
        
        // If we don't have a motivation provider, assume game over and log the problem.
        if (_motivationProvider is null)
        {
            GD.PrintErr("[Dead] MotivationProvider not found - defaulting to Game Over");
            Hud.Instance.ShowGameOver();
            _isGameOver = true;
            return;
        }
        
        if (_motivationProvider.CurrentResource < 100f)
        {
            // If motivation is not enough show game over scene
            Hud.Instance.ShowGameOver();
            _isGameOver = true;
        }
        else
        {
            // Else show respawn notification
            Hud.Instance.ShowTerminated();
            _isGameOver = false;
        }
    }

    public override void ExitState()
    {
        base.ExitState();
        Hud.Instance.HideTerminated();
    }


    public override void ProcessState(double delta)
    {
        base.ProcessState(delta);
        
        // If input provider is missing, bail out to avoid NullReferenceException.
        if (_inputProvider is null)
        {
            // Log once to help debugging, but avoid spamming the console every frame.
            GD.PrintErr("[Dead] InputProvider not available - input ignored in Dead state.");
            return;
        }
        
        if (_inputProvider.GetShootJustPressed())
        {
            if (_isGameOver)
            {
                // Restart Level
                GlobalState.Instance.RestartLevel();
            }
            else
            {
                Respawn();
            }
            
        }
    }
    
    public void Respawn()
    {
        MainObject.GlobalPosition = GameController.Instance.LastCheckPointPosition;
        
        if (_healthProvider is null)
        {
            GD.PrintErr("[Dead] HealthProvider not found - cannot refill health on respawn");
        }
        else
        {
            _healthProvider.FillResource();
        }

        PoolingManager.Instance.ClearBullets();

        if (_motivationProvider is null)
        {
            GD.PrintErr("[Dead] MotivationProvider not found - skipping motivation deduction");
        }
        else
        {
            _motivationProvider.CurrentResource -= 100f;
            if (_motivationProvider.CurrentResource <= 1f)
            {
                _motivationProvider.CurrentResource = 1f;
            }
        }
        
        ChangeState(PlayerState.Active);
    }
}