Merge pull request #2109 from splch/sitandlook

Adds personal work-from-home health widget

apps/widtwenties/ChangeLog

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+0.01: New Widget!
+0.02: Fix calling null on draw

apps/widtwenties/README.md

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+# Twenties
+
+Follow the [20-20-20 rule](https://www.aoa.org/AOA/Images/Patients/Eye%20Conditions/20-20-20-rule.pdf) with discrete reminders. Your BangleJS will buzz every 20 minutes for you to look away from your screen, and then buzz 20 seconds later to look back. Additionally, alternate between standing and sitting every 20 minutes to be standing for [more than 30 minutes](https://uwaterloo.ca/kinesiology-health-sciences/how-long-should-you-stand-rather-sit-your-work-station) per hour.
+
+## Usage
+
+Download this widget and, as long as your watch-face supports widgets, it will automatically run in the background.
+
+## Features
+
+Vibrate to remind you to stand up and look away for healthy living.
+
+## Creator
+
+[@splch](https://github.com/splch/)

apps/widtwenties/metadata.json

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+{
+  "id": "widtwenties",
+  "name": "Twenties",
+  "shortName": "twenties",
+  "version": "0.02",
+  "description": "Buzzes every 20m to stand / sit and look 20ft away for 20s.",
+  "icon": "widget.png",
+  "type": "widget",
+  "tags": "widget,tools",
+  "supports": ["BANGLEJS", "BANGLEJS2"],
+  "readme": "README.md",
+  "storage": [{ "name": "widtwenties.wid.js", "url": "widget.js" }]
+}

apps/widtwenties/widget.js

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+// WIDGETS = {}; // <-- for development only
+
+/* run widgets in their own function scope so
+they don't interfere with currently-running apps */
+(() => {
+  const move = 20 * 60 * 1000; // 20 minutes
+  const look = 20 * 1000;      // 20 seconds
+
+  buzz = _ => {
+    Bangle.buzz().then(_ => {
+      setTimeout(Bangle.buzz, look);
+    });
+  };
+
+  // add widget
+  WIDGETS.twenties = {
+    buzz: buzz,
+    draw: _ => { return null; },
+  };
+
+  setInterval(WIDGETS.twenties.buzz, move); // buzz to stand / sit
+})();
+
+// Bangle.drawWidgets(); // <-- for development only