Update widgets at midnight (#634)

android/uhabits-android/src/main/java/org/isoron/uhabits/HabitsApplication.kt

@@ -62,6 +62,7 @@ class HabitsApplication : Application() {
 
         widgetUpdater = component.widgetUpdater
         widgetUpdater.startListening()
+        widgetUpdater.scheduleStartDayWidgetUpdate()
 
         reminderScheduler = component.reminderScheduler
         reminderScheduler.startListening()

android/uhabits-android/src/main/java/org/isoron/uhabits/intents/IntentScheduler.kt

@@ -45,7 +45,7 @@ class IntentScheduler
     private val manager =
             context.getSystemService(ALARM_SERVICE) as AlarmManager
 
-    fun schedule(timestamp: Long, intent: PendingIntent) {
+    fun schedule(timestamp: Long, intent: PendingIntent, alarmType: Int) {
         Log.d("IntentScheduler",
               "timestamp=" + timestamp + " current=" + System.currentTimeMillis())
         if (timestamp < System.currentTimeMillis()) {
@@ -54,19 +54,24 @@ class IntentScheduler
             return;
         }
         if (SDK_INT >= M)
-            manager.setExactAndAllowWhileIdle(RTC_WAKEUP, timestamp, intent)
+            manager.setExactAndAllowWhileIdle(alarmType, timestamp, intent)
         else
-            manager.setExact(RTC_WAKEUP, timestamp, intent)
+            manager.setExact(alarmType, timestamp, intent)
     }
 
     override fun scheduleShowReminder(reminderTime: Long,
                                       habit: Habit,
                                       timestamp: Long) {
         val intent = pendingIntents.showReminder(habit, reminderTime, timestamp)
-        schedule(reminderTime, intent)
+        schedule(reminderTime, intent, RTC_WAKEUP)
         logReminderScheduled(habit, reminderTime)
     }
 
+    override fun scheduleWidgetUpdate(updateTime: Long) {
+        val intent = pendingIntents.updateWidgets()
+        schedule(updateTime, intent, RTC)
+    }
+
     override fun log(componentName: String, msg: String) {
         Log.d(componentName, msg)
     }

android/uhabits-android/src/main/java/org/isoron/uhabits/intents/PendingIntentFactory.kt

@@ -103,4 +103,12 @@ class PendingIntentFactory
                         if (timestamp != null) putExtra("timestamp", timestamp)
                     },
                     FLAG_UPDATE_CURRENT)
+
+    fun updateWidgets(): PendingIntent =
+            PendingIntent.getBroadcast(
+                    context, 0,
+                    Intent(context, WidgetReceiver::class.java).apply {
+                        action = WidgetReceiver.ACTION_UPDATE_WIDGETS_VALUE
+                    },
+                    FLAG_UPDATE_CURRENT)
 }

android/uhabits-android/src/main/java/org/isoron/uhabits/receivers/WidgetReceiver.java

@@ -26,6 +26,7 @@ import org.isoron.uhabits.*;
 import org.isoron.uhabits.core.preferences.*;
 import org.isoron.uhabits.core.ui.widgets.*;
 import org.isoron.uhabits.intents.*;
+import org.isoron.uhabits.widgets.*;
 
 import dagger.*;
 
@@ -48,6 +49,9 @@ public class WidgetReceiver extends BroadcastReceiver
     public static final String ACTION_TOGGLE_REPETITION =
             "org.isoron.uhabits.ACTION_TOGGLE_REPETITION";
 
+    public static final String ACTION_UPDATE_WIDGETS_VALUE =
+            "org.isoron.uhabits.ACTION_UPDATE_WIDGETS_VALUE";
+
     private static final String TAG = "WidgetReceiver";
 
     @Override
@@ -64,13 +68,17 @@ public class WidgetReceiver extends BroadcastReceiver
         IntentParser parser = app.getComponent().getIntentParser();
         WidgetBehavior controller = component.getWidgetController();
         Preferences prefs = app.getComponent().getPreferences();
+        WidgetUpdater widgetUpdater = app.getComponent().getWidgetUpdater();
 
         Log.i(TAG, String.format("Received intent: %s", intent.toString()));
 
         try
         {
-            IntentParser.CheckmarkIntentData data;
+            IntentParser.CheckmarkIntentData data = null;
-            data = parser.parseCheckmarkIntent(intent);
+            if (intent.getAction() != ACTION_UPDATE_WIDGETS_VALUE)
+            {
+                data = parser.parseCheckmarkIntent(intent);
+            }
 
             switch (intent.getAction())
             {
@@ -100,6 +108,11 @@ public class WidgetReceiver extends BroadcastReceiver
                     controller.onRemoveRepetition(data.getHabit(),
                             data.getTimestamp());
                     break;
+
+                case ACTION_UPDATE_WIDGETS_VALUE:
+                    widgetUpdater.updateWidgets();
+                    widgetUpdater.scheduleStartDayWidgetUpdate();
+                    break;
             }
         }
         catch (RuntimeException e)

android/uhabits-android/src/main/java/org/isoron/uhabits/widgets/WidgetUpdater.kt

@@ -25,6 +25,8 @@ import org.isoron.androidbase.*
 import org.isoron.uhabits.core.commands.*
 import org.isoron.uhabits.core.preferences.*
 import org.isoron.uhabits.core.tasks.*
+import org.isoron.uhabits.core.utils.*
+import org.isoron.uhabits.intents.*
 import javax.inject.*
 
 /**
@@ -36,7 +38,8 @@ class WidgetUpdater
         @AppContext private val context: Context,
         private val commandRunner: CommandRunner,
         private val taskRunner: TaskRunner,
-        private val widgetPrefs: WidgetPreferences
+        private val widgetPrefs: WidgetPreferences,
+        private val intentScheduler: IntentScheduler
 ) : CommandRunner.Listener {
 
     override fun onCommandExecuted(command: Command, refreshKey: Long?) {
@@ -60,6 +63,11 @@ class WidgetUpdater
         commandRunner.removeListener(this)
     }
 
+    fun scheduleStartDayWidgetUpdate() {
+        val timestamp = DateUtils.getStartOfTomorrow()
+        intentScheduler.scheduleWidgetUpdate(timestamp);
+    }
+
     fun updateWidgets(modifiedHabitId: Long?) {
         taskRunner.execute {
             updateWidgets(modifiedHabitId, CheckmarkWidgetProvider::class.java)

android/uhabits-core/src/main/java/org/isoron/uhabits/core/reminders/ReminderScheduler.java

@@ -164,6 +164,8 @@ public class ReminderScheduler implements CommandRunner.Listener
     {
         void scheduleShowReminder(long reminderTime, Habit habit, long timestamp);
 
+        void scheduleWidgetUpdate(long updateTime);
+
         void log(String componentName, String msg);
     }
 }

android/uhabits-core/src/main/java/org/isoron/uhabits/core/utils/DateUtils.java

@@ -175,9 +175,14 @@ public abstract class DateUtils
         return getStartOfDay(getLocalTime());
     }
 
+    public static long getStartOfTomorrow()
+    {
+        return getUpcomingTimeInMillis(0, 0);
+    }
+
     public static long millisecondsUntilTomorrow()
     {
-        return getStartOfToday() + DAY_LENGTH - getLocalTime();
+        return getStartOfTomorrow() - getLocalTime();
     }
 
     public static GregorianCalendar getStartOfTodayCalendar()

android/uhabits-core/src/test/java/org/isoron/uhabits/core/utils/DateUtilsTest.java

@@ -164,6 +164,7 @@ public class DateUtilsTest extends BaseUnitTest
     @Test
     public void testMillisecondsUntilTomorrow() throws Exception
     {
+        DateUtils.setFixedTimeZone(TimeZone.getTimeZone("GMT"));
         DateUtils.setFixedLocalTime(unixTime(2017, JANUARY, 1, 23, 59));
         assertThat(DateUtils.millisecondsUntilTomorrow(), equalTo(60000L));