using System;
using Sandbox;

namespace Editor.SuperShot;

public static class SuperShotUI
{
	public static Color Accent => new( 0.36f, 0.55f, 0.95f );
	public static Color AccentDim => new( 0.22f, 0.30f, 0.46f );
	public static Color CardBackground => Theme.ControlBackground.Lighten( 0.03f );
	public static Color CardBorder => Theme.ControlBackground.Lighten( 0.12f );
	public static Color Muted => Theme.TextControl.WithAlpha( 0.6f );

	public static Banner AddBanner( Layout layout, string title, string subtitle, string icon )
	{
		var banner = new Banner( title, subtitle, icon );
		layout.Add( banner );
		return banner;
	}

	public static Card AddCard( Layout layout, string title = null, string icon = null )
	{
		var card = new Card( title, icon );
		layout.Add( card );
		return card;
	}

	public static ExpandGroup AddSection( Layout layout, string title, string icon, Widget content, string cookie = null, bool defaultOpen = false )
	{
		var group = new ExpandGroup( null );
		group.Title = title;
		group.Icon = icon;
		group.SetWidget( content );

		if ( !string.IsNullOrEmpty( cookie ) )
			group.StateCookieName = cookie;
		else
			group.SetOpenState( defaultOpen );

		layout.Add( group );
		return group;
	}

	public static Widget SheetWidget( SerializedObject so, Func<SerializedProperty, bool> filter = null )
	{
		var widget = new Widget( null );
		widget.Layout = Layout.Column();

		var sheet = new ControlSheet();
		if ( filter is null )
			sheet.AddObject( so );
		else
			sheet.AddObject( so, filter );

		widget.Layout.Add( sheet );
		return widget;
	}
}

public sealed class Banner : Widget
{
	public string TitleText { get; set; }
	public string SubtitleText { get; set; }
	public string Icon { get; set; }

	public Banner( string title, string subtitle, string icon ) : base( null )
	{
		TitleText = title;
		SubtitleText = subtitle;
		Icon = icon;
		FixedHeight = 56;
		MinimumSize = new Vector2( 0, 56 );
	}

	protected override void OnPaint()
	{
		var rect = LocalRect;

		Paint.ClearPen();
		Paint.SetBrush( SuperShotUI.AccentDim.WithAlpha( 0.35f ) );
		Paint.DrawRect( rect, 6f );

		Paint.ClearBrush();
		Paint.SetBrush( SuperShotUI.Accent );
		Paint.DrawRect( new Rect( rect.Left, rect.Top, 4f, rect.Height ), 2f );

		var content = rect.Shrink( 16, 0 );

		if ( !string.IsNullOrEmpty( Icon ) )
		{
			Paint.SetPen( SuperShotUI.Accent );
			Paint.DrawIcon( new Rect( content.Left, content.Top, 32, content.Height ), Icon, 26, TextFlag.LeftCenter );
			content.Left += 44;
		}

		Paint.SetDefaultFont( 11, 600 );
		Paint.SetPen( Theme.Text );
		Paint.DrawText( new Rect( content.Left, content.Top + 8, content.Width, 22 ), TitleText, TextFlag.LeftTop );

		if ( !string.IsNullOrEmpty( SubtitleText ) )
		{
			Paint.SetDefaultFont( 8, 400 );
			Paint.SetPen( SuperShotUI.Muted );
			Paint.DrawText( new Rect( content.Left, content.Top + 30, content.Width, 18 ), SubtitleText, TextFlag.LeftTop );
		}
	}
}

public sealed class Card : Widget
{
	public Layout Body { get; private set; }

	public Card( string title = null, string icon = null ) : base( null )
	{
		Layout = Layout.Column();
		Layout.Margin = 12;
		Layout.Spacing = 8;

		if ( !string.IsNullOrEmpty( title ) )
		{
			var header = Layout.AddRow();
			header.Spacing = 6;

			if ( !string.IsNullOrEmpty( icon ) )
				header.Add( new IconLabel( icon ) );

			header.Add( new Label.Subtitle( title ) );
			header.AddStretchCell();
		}

		var bodyWidget = new Widget( this );
		bodyWidget.Layout = Layout.Column();
		bodyWidget.Layout.Spacing = 6;
		Body = bodyWidget.Layout;
		Layout.Add( bodyWidget );
	}

	protected override void OnPaint()
	{
		Paint.ClearPen();
		Paint.SetBrush( SuperShotUI.CardBackground );
		Paint.DrawRect( LocalRect, 6f );

		Paint.ClearBrush();
		Paint.SetPen( SuperShotUI.CardBorder, 1f );
		Paint.DrawRect( LocalRect.Shrink( 0.5f ), 6f );
	}
}

public sealed class IconLabel : Widget
{
	public string Icon { get; set; }

	public IconLabel( string icon ) : base( null )
	{
		Icon = icon;
		FixedSize = new Vector2( 20, 20 );
	}

	protected override void OnPaint()
	{
		Paint.SetPen( SuperShotUI.Accent );
		Paint.DrawIcon( LocalRect, Icon, 18, TextFlag.Center );
	}
}