PopulatePrescriptionDBService.java

/*
 *    Calendula - An assistant for personal medication management.
 *    Copyright (C) 2016 CITIUS - USC
 *
 *    Calendula 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.
 *
 *    This program 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 this software.  If not, see <http://www.gnu.org/licenses/>.
 */

package es.usc.citius.servando.calendula.services;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;

import es.usc.citius.servando.calendula.persistence.Prescription;
import es.usc.citius.servando.calendula.util.medicine.HomogeneousGroupStore;
import es.usc.citius.servando.calendula.util.medicine.PrescriptionStore;

/**
 * Created by joseangel.pineiro on 3/3/15.
 */
public class PopulatePrescriptionDBService {

    public static final String DB_VERSION_KEY = "AEMPS_DB_VERSION";
    public static final String TAG = "PopulateDBService.class";

    public static boolean isDbOutdated(Context ctx){
        final int manifestVersion = getAempDbVersionFromManifest(ctx);
        final int currentVersion = getAempDbVersionFromPreferences(ctx);
        return (currentVersion < manifestVersion) || Prescription.empty();
    }

    public void updateIfNeeded(Context ctx) {

        final int manifestVersion = getAempDbVersionFromManifest(ctx);
        final int currentVersion = getAempDbVersionFromPreferences(ctx);
        boolean needUpdate = (currentVersion < manifestVersion) || Prescription.empty();

        if (needUpdate) {
            Log.d(TAG, "Updating prescriptions database...");
            HomogeneousGroupStore.updateGroupsFromCSV(ctx, true, manifestVersion);
            PrescriptionStore.updatePrescriptionsFromCSV(ctx, true, manifestVersion);
        } else {
            Log.d(TAG, "Do not need to update prescription database");
        }
    }

    public static int getAempDbVersionFromPreferences(Context ctx) {
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(ctx);
        return prefs.getInt(DB_VERSION_KEY, -1);
    }

    public static int getAempDbVersionFromManifest(Context ctx) {
        int databaseVersion = 0;
        try {
            ApplicationInfo ai = ctx.getPackageManager().getApplicationInfo(ctx.getPackageName(), PackageManager.GET_META_DATA);
            Bundle bundle = ai.metaData;
            databaseVersion = bundle.getInt(DB_VERSION_KEY);

        } catch (PackageManager.NameNotFoundException e) {
            Log.e(TAG, "Failed to load meta-data, NameNotFound", e);
        } catch (Exception e) {
            Log.e(TAG, "Failed to load meta-data: ", e);
        }
        return databaseVersion;
    }
}