using Godot;
using MaxEffort.Code.Core;
using MaxEffort.Code.Data;

namespace MaxEffort.Code.Systems;

[GlobalClass]
public partial class GameManager : Node
{
    [Export] private Godot.Collections.Array<DayConfig> _days;
    [Export] private HazardSystem _hazardSystem;
    [Export] private Node _minigameContainer;
    
    [Export] private Control _winScreen;
    [Export] private Control _loseScreen;
    [Export] private Control _gameCompleteScreen;
    [Export] private Label _dayLabel;
    [Export] private PackedScene _mainMenuScene;
    
    private int _currentDayIndex = 0;
    private Node _currentMiniGame;
    
    public override void _Ready()
    {
        EventBus.OnLiftCompleted += HandleLiftResult;
        CallDeferred(nameof(StartDay), _currentDayIndex);
    }

    public override void _ExitTree()
    {
        EventBus.OnLiftCompleted -= HandleLiftResult;
    }
    
    private void StartDay(int index)
    {
        if (index >= _days.Count)
        {
            GD.Print("YOU BEAT THE GYM! ALL DAYS COMPLETE.");
            _currentMiniGame?.QueueFree();
            _hazardSystem.ClearHazards();
        
            if (_winScreen != null) _winScreen.Visible = false;
            if (_loseScreen != null) _loseScreen.Visible = false;
        
            if (_gameCompleteScreen != null) 
            {
                _gameCompleteScreen.Visible = true;
            }
            return;
        }

        var config = _days[index];

        _currentMiniGame?.QueueFree();
        _hazardSystem.ClearHazards();
        
        if (config.MiniGameScene != null)
        {
            _currentMiniGame = config.MiniGameScene.Instantiate();
            _minigameContainer.AddChild(_currentMiniGame);
            
            var liftSystem = _currentMiniGame.GetNode<BaseLiftSystem>("System");
            liftSystem?.Initialize(config.TargetWeight, config.Gravity);
        }
  
        _hazardSystem.SetAvailableHazards(config.AvailableHazards);
        
        if (_dayLabel != null) _dayLabel.Text = config.DayTitle;
        
        if (_winScreen != null) _winScreen.Visible = false;
        if (_loseScreen != null) _loseScreen.Visible = false;
        
        GD.Print($"Started {config.DayTitle}");
    }

    private void HandleLiftResult(bool success)
    {
        if (success)
        {
            GD.Print("Day Complete! Next day loading...");
            if (_winScreen != null) _winScreen.Visible = true;
        }
        else
        {
            GD.Print("FAIL! Go home.");
            if (_loseScreen != null) _loseScreen.Visible = true;
        }
    }
    
    public void OnNextDayPressed()
    {
        NextDay();
    }

    public void OnRetryPressed()
    {
        RestartDay();
    }

    public void OnMenuPressed()
    {
        if (_mainMenuScene != null)
        {
            GetTree().ChangeSceneToPacked(_mainMenuScene);
        }
        else
        {
            GetTree().Quit(); 
        }
    }

    private void NextDay()
    {
        _currentDayIndex++;
        StartDay(_currentDayIndex);
    }
    
    private void RestartDay()
    {
        GetTree().ReloadCurrentScene(); 
    }
}