package com.mumfrey.liteloader.core;



import java.io.File;

import java.io.IOException;

import java.net.MalformedURLException;

import java.util.logging.Logger;

import java.util.zip.ZipEntry;

import java.util.zip.ZipFile;



import net.minecraft.launchwrapper.LaunchClassLoader;



import com.google.common.base.Charsets;

import com.google.common.io.Files;

import com.mumfrey.liteloader.resources.ModResourcePack;

import com.mumfrey.liteloader.resources.ModResourcePackDir;



/**

 * Mod file reference for a file loaded from class path

 *

 * @author Adam Mummery-Smith

 */

public class ClassPathMod extends ModFile

{

	private static final long serialVersionUID = -4759310661966590773L;

	

	private static final Logger logger = Logger.getLogger("liteloader");



	ClassPathMod(File file, String fallbackName)

	{

		super(file, ClassPathMod.getVersionMetaDataString(file));



		if (this.modName == null) this.modName = fallbackName;

		if (this.targetVersion == null) this.targetVersion = LiteLoaderBootstrap.VERSION.getMinecraftVersion();

	}

	

	@Override

	protected String getDefaultName()

	{

		return null;

	}

	

	@Override

	public void initResourcePack(String name)

	{

		if (this.resourcePack == null)

		{

			if (this.isDirectory())

			{

				ClassPathMod.logger.info(String.format("Setting up \"%s/%s\" as mod resource pack with identifier \"%s\"", this.getParentFile().getName(), this.getName(), name));

				this.resourcePack = new ModResourcePackDir(name, this);

			}

			else

			{

				ClassPathMod.logger.info(String.format("Setting up \"%s\" as mod resource pack with identifier \"%s\"", this.getName(), name));

				this.resourcePack = new ModResourcePack(name, this);

			}

		}

	}

	

	@Override

	public boolean injectIntoClassPath(LaunchClassLoader classLoader, boolean injectIntoParent) throws MalformedURLException

	{

		// Can't inject a class path entry into the class path!

		return false;

	}

	

	@Override

	public boolean isInjected()

	{

		return true;

	}

	

	private static String getVersionMetaDataString(File file)

	{

		try

		{

			if (file.isDirectory())

			{

				File versionMetaFile = new File(file, "litemod.json");

				if (versionMetaFile.exists())

				{

					return Files.toString(versionMetaFile, Charsets.UTF_8);

				}

			}

			else

			{

				String strVersion = null;

				ZipFile modZip = new ZipFile(file);

				ZipEntry versionEntry = modZip.getEntry("litemod.json");

				if (versionEntry != null)

				{

					try

					{

						strVersion = ModFile.zipEntryToString(modZip, versionEntry);

					}

					catch (IOException ex) {}

				}

				

				modZip.close();

				return strVersion;

			}

		}

		catch (IOException ex)

		{

			ex.printStackTrace();

		}

		

		return null;

	}

}