using UnityEngine;
using System.Collections;
using System.IO;
using System.Globalization;

namespace uSrcTools
{

		public class ConvertUtils
		{
		public static Vector3 StringToVector(string input)
		{
			Vector3 origin = Vector3.zero;
			string[] posStrings = input.Split(new char[]{' '});
			if(posStrings.Length<3)
				Debug.LogError("String "+input+" is not Vector3");
			try{
			    origin = new Vector3(floatParse(posStrings[0]),floatParse(posStrings[2]),floatParse(posStrings[1]))*SourceImportConfig.WorldScale;
			}
			catch(System.FormatException e)
			{
				Debug.LogError("StringToVector error "+e.Message);
				origin = Vector3.zero;
			}
			return origin;
		}

		public static Vector2 ReadVector2 (BinaryReader BR)
		{
			return new Vector2 (BR.ReadSingle(), BR.ReadSingle());
		}

		public static Vector3 ReadVector3 (BinaryReader BR)
		{
			return new Vector3 (BR.ReadSingle(), BR.ReadSingle(), BR.ReadSingle());
		}

		public static Vector4 ReadVector4 (BinaryReader BR)
		{
			return new Vector4 (BR.ReadSingle(), BR.ReadSingle(), BR.ReadSingle(), BR.ReadSingle());
		}

		public static Quaternion ReadQuat (BinaryReader BR)
		{
			return new Quaternion (BR.ReadSingle(), BR.ReadSingle(), BR.ReadSingle(), BR.ReadSingle());
		}

		public static void WriteVector3(BinaryWriter bw, Vector3 v)
		{
			bw.Write (v.x);
			bw.Write (v.y);
			bw.Write (v.z);
		}

		public static void WriteVector2(BinaryWriter bw, Vector2 v)
		{
			bw.Write (v.x);
			bw.Write (v.y);
		}

		public static string ReadNullTerminatedString(BinaryReader br, int offset)
		{
			br.BaseStream.Seek (offset, SeekOrigin.Begin);
			return ReadNullTerminatedString (br);
		}

		public static string ReadNullTerminatedString(BinaryReader br)
		{
			string str = "";
			while (true) 
			{
				char c=br.ReadChar();
				if(c=='\0')break;
				str+=c;
			}
			return str;
		}

		public static string GetNullTerminatedString(char[] src, int offs)
		{
			string str = "";
			for(int i=offs;i<src.Length;i++)
			{
				char c=src[i];
				if(c=='\0')break;
				str+=c;
			}
			return str;
		}

		public static Vector3 FlipVector (Vector3 inp)
		{
			return new Vector3 (inp.x, inp.z, inp.y);
		}

		public static Color32 stringToColor(string input, byte alpha)
		{
			string[] colStrings = input.Trim().Split(' ');
			if(input =="0"||colStrings.Length==1)
				return new Color32(255,255,255,alpha);
			return new Color32((byte)short.Parse(colStrings[0]),(byte)short.Parse(colStrings[1]), (byte)short.Parse(colStrings[2]),alpha);
		}

		public static float[] Vector3ArrayToFloatArray(Vector3[] vecIn)
		{
			float[] fOut=new float[vecIn.Length*3];

			for(int i=0;i<vecIn.Length;i++)
			{
				fOut[i*3]=vecIn[i].x;
				fOut[(i*3)+1]=vecIn[i].y;
				fOut[(i*3)+2]=vecIn[i].z;
			}

			return fOut;
		}

        public static float floatParse(string str) {
            CultureInfo ci = (CultureInfo)CultureInfo.CurrentCulture.Clone();
            ci.NumberFormat.CurrencyDecimalSeparator = ".";
            return float.Parse(str, NumberStyles.Any, ci);
        }
	}

}