First attempt at notifying at given time

lib/notifications.js

@@ -0,0 +1,27 @@
+import {tempReminderObservable} from '../local-storage'
+import { LocalTime, ChronoUnit } from 'js-joda'
+import {NotificationsAndroid} from 'react-native-notifications'
+
+let stopCheckingTheTime = () => {}
+
+export default function setupNotifications() {
+  tempReminderObservable(reminder => {
+    stopCheckingTheTime()
+    if (reminder.enabled) {
+      stopCheckingTheTime = notifyAt(reminder.time)
+    }
+  })
+}
+
+function notifyAt(time) {
+  const id = setInterval(() => {
+    const now = LocalTime.now().truncatedTo(ChronoUnit.MINUTES).toString()
+    if (now === time) {
+      NotificationsAndroid.localNotification({
+        title: 'yo',
+        body: 'much notification'
+      })
+    }
+  }, 60 * 1000)
+  return () => clearInterval(id)
+}