MasterPasswordHolder.java

package de.devland.masterpassword.util;

import android.content.Intent;

import com.google.common.primitives.UnsignedInteger;
import com.lyndir.masterpassword.MPSiteType;
import com.lyndir.masterpassword.MPSiteTypeClass;
import com.lyndir.masterpassword.MPSiteVariant;
import com.lyndir.masterpassword.MasterKey;

import java.util.HashMap;
import java.util.Map;

import de.devland.masterpassword.App;
import de.devland.masterpassword.R;
import de.devland.masterpassword.base.ui.BaseActivity;
import de.devland.masterpassword.ui.LoginActivity;
import lombok.Synchronized;

/**
 * Created by David Kunzler on 23.08.2014.
 */
public enum MasterPasswordHolder {
    INSTANCE;

    private boolean needsLogin = true;
    private Map<MasterKey.Version, MasterKey> masterkeys = new HashMap<>();


    public boolean needsLogin(boolean redirect) {
        if (needsLogin && redirect) {
            Intent loginIntent = new Intent(App.get(), LoginActivity.class);
            loginIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_NO_ANIMATION);
            App.get().startActivity(loginIntent);
        }
        return needsLogin;
    }

    @Synchronized
    public void setMasterKey(MasterKey.Version version, MasterKey masterKey) {
        masterkeys.put(version, masterKey);
        needsLogin = false;
    }

    @Synchronized
    public MasterKey getMasterKey(MasterKey.Version version) {
        return masterkeys.get(version);
    }

    public byte[] getKeyId() {
        return masterkeys.get(MasterKey.Version.CURRENT).getKeyID();
    }

    public void clear() {
        needsLogin = true;
        masterkeys.clear();
    }

    public String generate(MPSiteType type, MPSiteVariant variant, String siteName, int siteCounter, MasterKey.Version version) {
        String result = "";
        if (type.getTypeClass() == MPSiteTypeClass.Generated) {
            MasterKey masterKey = masterkeys.get(version);
            if (masterKey != null) {
                result = masterKey.encode(siteName.trim(), type, UnsignedInteger.fromIntBits(siteCounter), variant, null);
            } else {
                Intent loginIntent = new Intent(App.get(), LoginActivity.class);
                loginIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_NO_ANIMATION);
                if (!needsLogin) {
                    needsLogin = true;
                    loginIntent.putExtra(BaseActivity.EXTRA_SNACKBAR_MESSAGE, App.get().getString(R.string.msg_algorithmVersionNotPrecalculated));
                }
                App.get().startActivity(loginIntent);
            }
        }
        return result;
    }
}