ApkUpdateHelper.java

/*
 *  Copyright (C) 2010-2016 Stichting Akvo (Akvo Foundation)
 *
 *  This file is part of Akvo Flow.
 *
 *  Akvo Flow is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Akvo Flow is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Akvo Flow.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.akvo.flow.service;

import android.content.Context;
import android.support.annotation.Nullable;
import android.support.v4.util.Pair;

import org.akvo.flow.BuildConfig;
import org.akvo.flow.api.service.ApkApiService;
import org.akvo.flow.domain.apkupdate.ApkUpdateMapper;
import org.akvo.flow.domain.apkupdate.ViewApkData;
import org.akvo.flow.util.PlatformUtil;
import org.akvo.flow.util.ServerManager;
import org.akvo.flow.util.StringUtil;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;

public class ApkUpdateHelper {

    private final ApkApiService apkApiService = new ApkApiService();
    private final ApkUpdateMapper apkUpdateMapper = new ApkUpdateMapper();
    private final ServerManager serverManager;

    public ApkUpdateHelper(Context context) {
        this.serverManager = new ServerManager(context);
    }

    Pair<Boolean, ViewApkData> shouldUpdate() throws IOException, JSONException {
        JSONObject json = apkApiService.getApkDataObject(serverManager.getServerBase());
        ViewApkData data = apkUpdateMapper.transform(json);
        return new Pair<>(shouldAppBeUpdated(data), data);
    }

    private boolean shouldAppBeUpdated(@Nullable ViewApkData data) {
        if (data == null) {
            return false;
        }
        String version = data.getVersion();
        return StringUtil.isValid(version)
                && PlatformUtil.isNewerVersion(BuildConfig.VERSION_NAME, version)
                && StringUtil.isValid(data.getFileUrl());
    }
}