import java.io.*;
import java.util.Date;
import java.security.*;
import java.math.BigInteger;

class LastFM {
    String sessionkey = "";
    String username = "";
    String password = "";

    public LastFM() {
        readConfig("lastfm_config.txt");
        System.out.println("lastfm username: " + username + ", password: " + doAskterisks(password));
        System.out.println(authKey(password));
    }

    public static void main(String[] args) {
        if(args.length < 3) {
            System.out.println("Error: not enough args!");
            return;
        }
        LastFM scrobbler = new LastFM();
    }

    private String authKey(String pass) {
        long sec;
        Date date;
        MessageDigest md;
        BigInteger i;
        String passhash;
        try {
            date = new Date();
            sec = date.getTime() / 1000;
            md = MessageDigest.getInstance("MD5");
            md.update(pass.getBytes("iso-8859-1"), 0, pass.length());
            i = new BigInteger(1,md.digest());
            passhash = String.format("%1$032X", i) + String.valueOf(sec);
            md = MessageDigest.getInstance("MD5");
            md.update(passhash.getBytes("iso-8859-1"), 0, passhash.length());
            i = new BigInteger(1,md.digest());
            return String.format("%1$032X", i);
        } catch (Exception e) {
            return "";
        }
    }

    private String getSessionKey(String authKey) {
        authKey = authKey(password);
        /* XXX: Code goes here */
        return "";
    }

    private String doAskterisks(String pass) {
        String ob = "";
        for(int i = 0; i < pass.length(); i++) {
            ob += "*";
        }
        return ob;
    }

    private void readConfig(String file) {
        BufferedReader in = null;
        try {
            in = new BufferedReader(new FileReader(file));
            username = in.readLine();
            password = in.readLine();
        } catch(java.io.IOException e) {
            System.err.println("Caught java.io.IOException: " + e.getMessage());
        } finally {
            if(in != null) {
                try {
                    in.close();
                } catch(java.io.IOException e) {
                    System.err.println("Caught java.io.IOException: " + e.getMessage());
                }
            }
        }
    }
}