package main;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;

public class Uploader{

	private static final int BUFFER_SIZE=4096;
	private static final String ftpUrl="ftp://%s:%s@%s/%s;type=i";
	//FTP credentials
	private static final String host="";
	private static final String user="";
	private static final String pass="";

	//local directory to sync, e.g. "C:\\xampp\\htdocs\\"
	public static final Path localBase=Paths.get("");

	public static void upload(Path f){
		try{
			URL u=new URL(String.format(ftpUrl,user,pass,host,localBase.relativize(f).toString().replace('\\','/')));
			URLConnection conn=u.openConnection();
			OutputStream o=conn.getOutputStream();
			FileInputStream i=new FileInputStream(f.toFile());
			byte[] buffer=new byte[BUFFER_SIZE];
			int bytesRead=-1;
			while((bytesRead=i.read(buffer))!=-1){
				o.write(buffer,0,bytesRead);
			}
			i.close();o.close();
		}catch(IOException e){
			e.printStackTrace();
		}
	}

	public static void delete(Path f){
		FTPClient ftpClient=new FTPClient();
		try{
			ftpClient.connect(host,21);
			if(!FTPReply.isPositiveCompletion(ftpClient.getReplyCode()))return;
			if(!ftpClient.login(user,pass))return;
			ftpClient.deleteFile(localBase.relativize(f).toString().replace('\\','/'));
		}catch(IOException ex){
			ex.printStackTrace();
		}finally{
			try{
				if(ftpClient.isConnected()){
					ftpClient.logout();
					ftpClient.disconnect();
				}
			}catch(IOException ex){
				ex.printStackTrace();
			}
		}
	}

	public static String getFTPPath(){
		return String.format(ftpUrl.substring(0,14),user,pass,host);
	}

}