CredentialsHelper

package app.picaboo.android.security;

import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;

import java.util.UUID;

/**
 * Created by Bernat on 07/06/2014.
 */
public class CredentialsHelper {

    private static final String KEY_USER = "KEY_USER";
    private static final String KEY_PASS = "KEY_PASS";

    private final SharedPreferences preferences;

    public CredentialsHelper(Context context) {
        preferences = PreferenceManager.getDefaultSharedPreferences(context);
    }

    public void saveUser(String user, String password) {
        SharedPreferences.Editor editor = preferences.edit();

        editor.putString(KEY_USER, user);
        editor.putString(KEY_PASS, password);

        editor.commit();
    }

    private void savePass(String password) {
        SharedPreferences.Editor editor = preferences.edit();

        editor.putString(KEY_PASS, password);

        editor.commit();
    }

    public String getUser() {
        return preferences.getString(KEY_USER, "");
    }

    public String getPassword() {
        String pass = preferences.getString(KEY_PASS, null);
        if (pass == null) {
            pass = getRandomPassword();
            savePass(pass);
        }
        return pass;
    }

    private String getRandomPassword() {
        return UUID.randomUUID().toString();
    }

    public void clear() {
        SharedPreferences.Editor editor = preferences.edit();
        editor.remove(KEY_USER);
        editor.remove(KEY_PASS);
        editor.commit();
    }

}