using UnityEngine;
using System;
using System.Collections.Generic;
#if !UNITY_FLASH
using System.Text.RegularExpressions;
#endif

public class MegaShapeSXL
{
	int splineindex = 0;

	public void LoadXML(string sxldata, MegaShape shape, bool clear, int start)
	{
		MegaXMLReader xml = new MegaXMLReader();
		MegaXMLNode node = xml.read(sxldata);

		if ( !clear )
			shape.splines.Clear();

		shape.selcurve = start;
		splineindex = start;
		ParseXML(node, shape);
	}

	public void ParseXML(MegaXMLNode node, MegaShape shape)
	{
		foreach ( MegaXMLNode n in node.children )
		{
			switch ( n.tagName )
			{
				case "Shape": ParseShape(n, shape); break;
			}

			ParseXML(n, shape);
		}
	}

	MegaSpline GetSpline(MegaShape shape)
	{
		MegaSpline spline;

		if ( splineindex < shape.splines.Count )
			spline = shape.splines[splineindex];
		else
		{
			spline = new MegaSpline();
			shape.splines.Add(spline);
		}

		splineindex++;
		return spline;
	}

	public void ParseShape(MegaXMLNode node, MegaShape shape)
	{
		for ( int i = 0; i < node.values.Count; i++ )
		{
			MegaXMLValue val = node.values[i];

			//Debug.Log("Shape val " + val.name);
			switch ( val.name )
			{
				case "name": break;
				case "p": break;
				case "r": break;
				case "s": break;
			}
		}

		foreach ( MegaXMLNode n in node.children )
		{
			//Debug.Log("Shape tagName " + n.tagName);

			switch ( n.tagName )
			{
				case "Spline":
					ParseSpline(n, shape);
					break;
			}
		}
	}

	public void ParseSpline(MegaXMLNode node, MegaShape shape)
	{
		MegaSpline spline = new MegaSpline();

		for ( int i = 0; i < node.values.Count; i++ )
		{
			MegaXMLValue val = node.values[i];

			//Debug.Log("Spline val " + val.name);
			switch ( val.name )
			{
				case "flags": break;
				case "closed": spline.closed = int.Parse(val.value) > 0 ? true : false; break;
			}
		}

		foreach ( MegaXMLNode n in node.children )
		{
			//Debug.Log("Spline tagName " + n.tagName);
			switch ( n.tagName )
			{
				case "K": ParseKnot(n, shape, spline); break;
			}
		}

		//Debug.Log("************** Add Spline");
		shape.splines.Add(spline);
	}

	public void ParseKnot(MegaXMLNode node, MegaShape shape, MegaSpline spline)
	{
		Vector3 p = Vector3.zero;
		Vector3 invec = Vector3.zero;
		Vector3 outvec = Vector3.zero;

		for ( int i = 0; i < node.values.Count; i++ )
		{
			MegaXMLValue val = node.values[i];

			//Debug.Log("Knot val " + val.name);
			switch ( val.name )
			{
				case "p": p = ParseV3Split(val.value, 0); break;
				case "i": invec = ParseV3Split(val.value, 0); break;
				case "o": outvec = ParseV3Split(val.value, 0); break;
				case "l": break;
			}
		}

		spline.AddKnot(p, invec, outvec);
	}

	char[] commaspace = new char[] { ',', ' ' };

	Vector3 ParseV3Split(string str, int i)
	{
		return ParseV3(str.Split(commaspace, StringSplitOptions.RemoveEmptyEntries), i);
	}

	Vector3 ParseV3(string[] str, int i)
	{
		Vector3 p = Vector3.zero;

		p.x = float.Parse(str[i]);
		p.y = float.Parse(str[i + 1]);
		p.z = float.Parse(str[i + 2]);
		return p;
	}

	public void importData(string sxldata, MegaShape shape, float scale, bool clear, int start)
	{
		LoadXML(sxldata, shape, clear, start);
		for ( int i = start; i < splineindex; i++ )
		{
			float area = shape.splines[i].Area();
			if ( area < 0.0f )
				shape.splines[i].reverse = false;
			else
				shape.splines[i].reverse = true;
		}

		//shape.Centre(0.01f, new Vector3(-1.0f, 1.0f, 1.0f));
		//shape.Centre(scale, new Vector3(1.0f, 1.0f, 1.0f), start);
		shape.CoordAdjust(scale, new Vector3(1.0f, 1.0f, 1.0f), start);
		shape.CalcLength();	//10);
	}

}