package org.gander.core.rScript;


import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import org.gander.core.util.Debug;
/**
 * Read Script from .dat file using the required headers
 **/

 public class ScriptFileLoader
 {


	private final static String[] folderNames = {"ActionButtons","ObjectClick","Item on Item","NPCClick","SingleItemClick"};
	private final static String path = "etc/Scripts/";
	private int scriptsLoaded = 0;
	public ScriptFileLoader()
	 {
		

		File[] folders = new File[folderNames.length];
		Debug.print("Loading scripts (Number of folders: "+folderNames.length+")");
		for(int index = 0; index < folderNames.length; index++) {

			folders[index] = new File(path+folderNames[index]+"/");
			if(!folders[index].exists())
				throw new ScriptException("Error "+folderNames[index]+" Does not exist in etc/Scripts/");
		}

		for(File folder : folders)
		 	for(File script : folder.listFiles()) 
				manageScript(script);

		Debug.print("Finished loading "+scriptsLoaded+" Scripts");


	 }



	private void manageScript(File scriptFile)
	 {

		 try
		 {
		
			currentOffset = 0;
			buffer = new byte[(int)scriptFile.length()];

		 	FileInputStream ff = new FileInputStream(scriptFile);
			ff.read(buffer);
			ff.close();

			int header = readByte();
			if(header != 4)
		       throw new RuntimeException("Header was not  4 got "+header+" Script : "+scriptFile.getName());
				
				String scriptAuthor = readString();
			   
				String scriptName = readString();
				
				boolean threading = readByte() == 1;
				int type = readByte();
				int lines = readByte();
				String[] caret = new String[lines];
				for(int i = 0; i < lines; i++)
					caret[i] = readString();
			

				parseScript(caret,type,scriptAuthor,scriptName,threading);
		 }
		 catch (FileNotFoundException ex)
		 {
			 Debug.print("File not found");
		 }
		 catch (IOException ee)
		 {
			 ee.printStackTrace();
		 }
	 }
			
		private void parseScript(String[] lines, int type, String author, String name, boolean threading)
		{
			scriptsLoaded++;
			Script newScript = new Script(lines,type,author,name,threading);
			ScriptManager.addScript(newScript);
		}

	  public int readByte()
	  {
		  return (int)buffer[currentOffset++];
      }
	
	  public java.lang.String readString()
		{
        int i = currentOffset;
        while(buffer[currentOffset++] != 10);
        return new String(buffer, i, currentOffset - i - 1);
		}
			private byte[] buffer;
			private int currentOffset = 0;

		

 }