using Godot;

namespace Chessistics.Scripts.UI;

/// <summary>
/// Displays a one-line narrative blurb at the top of the screen when a mission starts.
/// Auto-fades out after a few seconds.
/// </summary>
public partial class FlavorBanner : PanelContainer
{
    private Label _label = null!;
    private Tween? _activeTween;

    private static readonly Color BannerBg = new(0.12f, 0.10f, 0.08f, 0.92f);
    private static readonly Color BorderColor = new("#B8942A");
    private static readonly Color TextColor = new("#E8D4A0");

    public override void _Ready()
    {
        // Style the panel
        var style = new StyleBoxFlat
        {
            BgColor = BannerBg,
            BorderColor = BorderColor,
            BorderWidthBottom = 2,
            ContentMarginLeft = 24,
            ContentMarginRight = 24,
            ContentMarginTop = 10,
            ContentMarginBottom = 10,
            CornerRadiusBottomLeft = 6,
            CornerRadiusBottomRight = 6
        };
        AddThemeStyleboxOverride("panel", style);

        _label = new Label
        {
            HorizontalAlignment = HorizontalAlignment.Center,
            AutowrapMode = TextServer.AutowrapMode.WordSmart
        };
        _label.AddThemeFontSizeOverride("font_size", 13);
        _label.AddThemeColorOverride("font_color", TextColor);
        AddChild(_label);

        MouseFilter = MouseFilterEnum.Ignore;
        Visible = false;
    }

    public void ShowFlavor(string text)
    {
        if (string.IsNullOrWhiteSpace(text))
        {
            Visible = false;
            return;
        }

        _activeTween?.Kill();

        _label.Text = text;
        Visible = true;
        Modulate = new Color(1, 1, 1, 0);

        _activeTween = CreateTween();
        // Fade in
        _activeTween.TweenProperty(this, "modulate:a", 1f, 0.4f)
            .SetEase(Tween.EaseType.Out);
        // Hold
        _activeTween.TweenInterval(5.0f);
        // Fade out
        _activeTween.TweenProperty(this, "modulate:a", 0f, 1.0f)
            .SetEase(Tween.EaseType.In);
        _activeTween.TweenCallback(Callable.From(() => Visible = false));
    }
}