package net.redheademile.matt;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.util.ArrayList;

public class Matt
{
	public static void main(String[] args)
	{
		new Matt();
	}

	public Matt()
	{
		File folder = new File("C:\\Users\\emili\\Documents\\kamek");
		int increment = 50, count = 0;
		for(int i = 0; i < 900; i += increment)
		{
			try
			{
				String content = savePage("https://git.wuffs.org/kamek/log/?h=resurrection&ofs="+Integer.toString(i));
				String[] result = getBeetween(content, "href='", "'>");
				for(int j = 0; j < result.length; j++)
				{
					if(result[j].contains("commit/") && result[j].contains("id="))
					{
						count++;
						String id = result[j].split("id=")[1];
						String url = "https://git.wuffs.org/kamek/snapshot/kamek-"+id+".zip";

						URL website = new URL(url);
						ReadableByteChannel rbc = Channels.newChannel(website.openStream());
						FileOutputStream fos = new FileOutputStream(new File(folder, "kamek-"+id+".zip"));
						fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
						fos.close();
						rbc.close();

						System.out.println(count + "/ 893 (supposé)");
					}
				}
			}
			catch(IOException e)
			{
				System.out.println("Erreur sur la page "+Integer.toString(i));
			}
		}
	}

	public String[] getBeetween(String str, String behind, String front)
	{
		ArrayList<String> words = new ArrayList<>();
		for(String str_ : str.split(behind))
		{
			try
			{
				if(str_.contains(front))
				{
					//System.out.println(str_);
					words.add(str_.split(front)[0]);
				}
			}
			catch(Exception e) {}
		}
		return words.toArray(new String[words.size()]);
	}

	public String savePage(final String URL) throws IOException
	{
		String line = "", all = "";
		URL myUrl = null;
		BufferedReader in = null;
		try {
			myUrl = new URL(URL);
			in = new BufferedReader(new InputStreamReader(myUrl.openStream()));

			while ((line = in.readLine()) != null) all += line;
		}
		finally
		{
			if (in != null) in.close();
		}

	return all;
	}
}