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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
package org.libreoffice.impressremote.communication;
import android.bluetooth.BluetoothAdapter;
import android.content.Context;
import android.os.Build;
import org.libreoffice.impressremote.util.Preferences;
final class PairingProvider {
private static final BluetoothAdapter btAdapter = BluetoothAdapter.getDefaultAdapter();
private final Preferences mAuthorizedServersPreferences;
private PairingProvider(Context aContext) {
mAuthorizedServersPreferences = Preferences.getAuthorizedServersInstance(aContext);
}
public static boolean isPairingNecessary(Server aServer) {
return aServer.getProtocol() == Server.Protocol.TCP;
}
public static String getPairingPin(Context aContext, Server aServer) {
return new PairingProvider(aContext).getPairingPin(aServer);
}
private String getPairingPin(Server aServer) {
if (isPinSaved(aServer)) {
return getSavedPin(aServer);
}
String aPin = Protocol.Pin.generate();
savePin(aServer, aPin);
return aPin;
}
private boolean isPinSaved(Server aServer) {
return getSavedPin(aServer) != null;
}
private String getSavedPin(Server aServer) {
return mAuthorizedServersPreferences.getString(aServer.getAddress());
}
private void savePin(Server aServer, String aPin) {
mAuthorizedServersPreferences.setString(aServer.getAddress(), aPin);
}
public static String getPairingDeviceName(Context aContext) {
return new PairingProvider(aContext).getPairingDeviceName();
}
private String getPairingDeviceName() {
if (btAdapter == null || btAdapter.getName() == null) {
return Build.MODEL;
}
return btAdapter.getName();
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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