SyncDetailCalculations.java

package org.commcare.utils;

import android.content.SharedPreferences;
import android.text.Spannable;
import android.text.format.DateUtils;
import android.widget.TextView;

import org.commcare.CommCareApplication;
import org.commcare.activities.StandardHomeActivity;
import org.commcare.adapters.HomeCardDisplayData;
import org.commcare.adapters.SquareButtonViewHolder;
import org.commcare.dalvik.R;
import org.commcare.models.database.SqlStorage;
import org.commcare.android.database.user.models.FormRecord;
import org.commcare.modern.util.Pair;
import org.javarosa.core.services.locale.Localization;

import java.text.DateFormat;
import java.util.Date;

/**
 * Logic that populates the sync button's notification text
 *
 * @author Phillip Mates (pmates@dimagi.com).
 */
public class SyncDetailCalculations {
    private final static String UNSENT_FORM_NUMBER_KEY = "unsent-number-limit";
    private final static String UNSENT_FORM_TIME_KEY = "unsent-time-limit";
    private final static String LAST_SYNC_KEY_BASE = "last-succesful-sync-";

    public static void updateSubText(final StandardHomeActivity activity,
                                     SquareButtonViewHolder squareButtonViewHolder,
                                     HomeCardDisplayData cardDisplayData) {

        int numUnsentForms = getNumUnsentForms();
        Pair<Long, String> lastSyncTimeAndMessage = getLastSyncTimeAndMessage();

        if (numUnsentForms > 0) {
            Spannable syncIndicator = (activity.localize("home.unsent.forms.indicator",
                    new String[]{String.valueOf(numUnsentForms)}));
            squareButtonViewHolder.subTextView.setText(syncIndicator);
        } else {
            squareButtonViewHolder.subTextView.setText(lastSyncTimeAndMessage.second);
        }
        setSyncSubtextColor(
                squareButtonViewHolder.subTextView, numUnsentForms, lastSyncTimeAndMessage.first,
                activity.getResources().getColor(cardDisplayData.subTextColor),
                activity.getResources().getColor(R.color.cc_dark_warm_accent_color));
    }

    public static int getNumUnsentForms() {
        SqlStorage<FormRecord> formsStorage = CommCareApplication.instance().getUserStorage(FormRecord.class);
        try {
            return StorageUtils.getUnsentRecordsForCurrentApp(formsStorage).length;
        } catch (SessionUnavailableException e) {
            // Addresses unexpected issue where this db lookup occurs after session ends.
            // If possible, replace this with fix that addresses root issue
            return 0;
        }
    }

    public static Pair<Long, String> getLastSyncTimeAndMessage() {
        CharSequence syncTimeMessage;
        long lastSyncTime = getLastSyncTime();
        if (lastSyncTime == 0) {
            syncTimeMessage = Localization.get("home.sync.message.last.never");
        } else {
            syncTimeMessage = DateUtils.formatSameDayTime(lastSyncTime, new Date().getTime(), DateFormat.DEFAULT, DateFormat.DEFAULT);
        }
        return new Pair<>(lastSyncTime, Localization.get("home.sync.message.last", new String[]{syncTimeMessage.toString()}));
    }

    public static long getLastSyncTime() {
        SharedPreferences prefs = CommCareApplication.instance().getCurrentApp().getAppPreferences();
        return prefs.getLong(getLastSyncKey(), 0);
    }

    public static String getLastSyncKey() {
        return LAST_SYNC_KEY_BASE + CommCareApplication.instance().getCurrentUserId();
    }

    private static void setSyncSubtextColor(TextView subtext, int numUnsentForms, long lastSyncTime,
                                            int normalColor, int warningColor) {
        if (isSyncStronglyNeeded(numUnsentForms, lastSyncTime)) {
            subtext.setTextColor(warningColor);
        } else {
            subtext.setTextColor(normalColor);
        }
    }

    private static boolean isSyncStronglyNeeded(int numUnsentForms, long lastSyncTime) {
        return unsentFormNumberLimitExceeded(numUnsentForms) ||
                unsentFormTimeLimitExceeded(lastSyncTime);
    }

    private static boolean unsentFormNumberLimitExceeded(int numUnsentForms) {
        SharedPreferences prefs = CommCareApplication.instance().getCurrentApp().getAppPreferences();
        int unsentFormNumberLimit = Integer.parseInt(prefs.getString(UNSENT_FORM_NUMBER_KEY, "5"));
        return numUnsentForms > unsentFormNumberLimit;
    }

    private static boolean unsentFormTimeLimitExceeded(long lastSyncTime) {
        SharedPreferences prefs = CommCareApplication.instance().getCurrentApp().getAppPreferences();
        int unsentFormTimeLimit = Integer.parseInt(prefs.getString(UNSENT_FORM_TIME_KEY, "5"));

        long now = new Date().getTime();
        int secs_ago = (int)((lastSyncTime - now) / 1000);
        int days_ago = secs_ago / 86400;

        return (-days_ago) > unsentFormTimeLimit;
    }
}