app/src/main/java/com/fairphone/updater/gappsinstaller/GappsInstallerHelper.java

/*
 * Copyright (C) 2013 Fairphone Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.fairphone.updater.gappsinstaller;

import android.appwidget.AppWidgetManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.SharedPreferences;

import com.fairphone.updater.tools.Utils;
import com.fairphone.updater.widgets.gapps.GoogleAppsInstallerWidget;

import java.io.File;

public class GappsInstallerHelper
{
    public static final String PREFS_GOOGLE_APPS_INSTALLER_DATA = "FAIRPHONE_GOOGLE_APPS_INSTALLER_DATA";
    public static final String GOOGLE_APPS_INSTALLER_STATE = "com.fairphone.updater.gapps.WIDGET_STATE";

    public static final int GAPPS_STATES_INITIAL = 0;
    public static final int GAPPS_INSTALLED_STATE = 1;

    public static final String EXTRA_START_GAPPS_INSTALL = "com.fairphone.updater.gapps.EXTRA_START_GAPPS_INSTALL";

    public static boolean areGappsInstalled()
    {
        return Utils.fileExists("/system/app/OneTimeInitializer.apk");
    }

    public static void checkGappsAreInstalled(Context context)
    {
        if (areGappsInstalled())
        {
            updateWidgetState(context, GAPPS_INSTALLED_STATE);
	        return;
        }

        updateWidgetState(context, GAPPS_STATES_INITIAL);

    }

    private static void updateGoogleAppsIntallerWidgets(Context context)
    {
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
        int[] appWidgetIds = appWidgetManager.getAppWidgetIds(new ComponentName(context, GoogleAppsInstallerWidget.class));
        if (appWidgetIds.length > 0)
        {
            new GoogleAppsInstallerWidget().onUpdate(context, appWidgetManager, appWidgetIds);
        }
    }

    private static void updateInstallerState(Context context, int state)
    {
        SharedPreferences sharedPrefs = context.getSharedPreferences(PREFS_GOOGLE_APPS_INSTALLER_DATA, Context.MODE_PRIVATE);
        // alter State
        SharedPreferences.Editor prefEdit = sharedPrefs.edit();
        prefEdit.putInt(GOOGLE_APPS_INSTALLER_STATE, state);
        prefEdit.apply();
    }

    private static void updateWidgetState(Context context, int state)
    {
        updateInstallerState(context, state);

        updateGoogleAppsIntallerWidgets(context);
    }
}