using System;
using System.IO;
using System.Xml;
using SBRL.Utilities;

namespace MusicBoxConverter
{
	public class SvgWriter
	{
		public XmlWriter xml;

		public SvgWriter(string outputFilename, string widthspec = "100%", string heightspec = "100%")
		{
			xml = XmlWriter.Create(
				outputFilename,
				new XmlWriterSettings() { Indent = true }
			);

			xml.WriteStartDocument();
			xml.WriteStartElement("svg", "http://www.w3.org/2000/svg");
			xml.WriteAttributeString("version", "1.1");
			xml.WriteAttributeString("width", widthspec);
			xml.WriteAttributeString("height", heightspec);
		}

		public void Complete()
		{
			xml.WriteEndElement();
			xml.WriteEndDocument();
			xml.Close();
		}

		public void WriteLine(Vector2 start, Vector2 end, string strokeStyle = "darkgreen", int strokeWidth = 3)
		{
			WritePath($"M {start.X} {start.Y} L {end.X} {end.Y}", strokeStyle, strokeWidth);
		}

		public void WritePath(string pathData, string strokeStyle = "green", int strokeWidth = 3)
		{
			xml.WriteStartElement("path");
			xml.WriteAttributeString("d", pathData);
			xml.WriteAttributeString("stroke", strokeStyle);
			xml.WriteAttributeString("stroke-width", strokeWidth.ToString());
			xml.WriteEndElement();
		}

		public void WriteRectangle(Vector2 position, Vector2 size, string strokeStyle = "red", int strokeWidth = 3)
		{
			xml.WriteStartElement("rect");
			xml.WriteAttributeString("x", position.X.ToString());
			xml.WriteAttributeString("y", position.Y.ToString());
			xml.WriteAttributeString("width", size.X.ToString());
			xml.WriteAttributeString("height", size.Y.ToString());
			xml.WriteAttributeString("fill", "transparent");
			xml.WriteAttributeString("stroke", strokeStyle);
			xml.WriteAttributeString("stroke-width", strokeWidth.ToString());
			xml.WriteEndElement();
		}
		public void WriteCircle(Vector2 centre, int radius, string fillStyle = "blue")
		{
			xml.WriteStartElement("circle");
			xml.WriteAttributeString("cx", centre.X.ToString());
			xml.WriteAttributeString("cy", centre.Y.ToString());
			xml.WriteAttributeString("r", radius.ToString());
			xml.WriteAttributeString("fill", fillStyle);
			xml.WriteEndElement();
		}
	}
}