using Godot;
using System.Collections.Generic;

// This is data passed to, and held by a list of Alert Boxes waiting for attention
public class AlertBoxData(string alert_text, string button_text = null)
{
    public string Text = alert_text;
    public string ButtonText = button_text;
}

public partial class AlertBox : Control
{
    [Export] private PanelContainer _panelContainer;
    [Export] private Button _button;
    [Export] private RichTextLabel _text;

    private List<AlertBoxData> _alertBoxes = []; // A list of alert boxes

    private bool _isActive;
    private double _openFraction;
    private static double OPEN_TIME = 0.5f;

    public void AddAlertBoxToList(string alert_text, string button_text = null)
    {
        _alertBoxes.Add(new AlertBoxData(alert_text, button_text));
        Open(_alertBoxes[_alertBoxes.Count - 1]);
    }

    public override void _Ready()
    {
        base._Ready();
        _isActive = false;
        Hide();
    }

    public void Open(AlertBoxData data)
    {
        _isActive = true;
        _text.Text = data.Text;
        Show();
    }

    public void Close()
    {
        _isActive = false;
    }

    public override void _Process(double delta)
    {
        base._Process(delta);

        if (_isActive)
        {
            _panelContainer.SelfModulate = Game.Instance.PrimaryColour;
            _button.SelfModulate = Game.Instance.PrimaryColour;
            _openFraction = Mathf.Min(1, _openFraction + delta / OPEN_TIME);
        }
        else
        {
            double old_frac = _openFraction;
            _openFraction = Mathf.Max(0, _openFraction - delta / OPEN_TIME);
            if (old_frac > 0 && _openFraction <= 0)
            {
                Hide();
                UpdateToNextAlertBoxInList();
            }
        }
    }

    public void ClearAlertBoxes()
    {
        _alertBoxes.Clear();
    }

    private void UpdateToNextAlertBoxInList()
    {
        RemoveCurrentAlertBox();

        if (_alertBoxes.Count > 0)
        {
            Open(_alertBoxes[0]);
        }
    }

    public void RemoveCurrentAlertBox()
    {
        if (_alertBoxes.Count > 0)
            _alertBoxes.RemoveAt(0);
    }
}