add settings for move and sit time

apps/getup/app.js

@@ -1,9 +1,25 @@
+const storage = require("Storage");
+const SETTINGS_FILE = 'getup.settings.json';
+
+function setting(key) {
+const DEFAULTS = {
+    'sitTime' : 20,
+    'moveTime' : 1
+};
+if (!settings) { loadSettings(); }
+return (key in settings) ? settings[key] : DEFAULTS[key];
+}
+let settings;
+function loadSettings() {
+settings = storage.readJSON(SETTINGS_FILE, 1) || {};
+}
+
 function remind() {
     Bangle.buzz(1000,1);
     g.clear();
     g.setColor(0xF800);
     g.drawString("MOVE!", g.getWidth()/2, g.getHeight()/2);
-    setTimeout(print_message,60000);
+    setTimeout(print_message,moveTime * 60000);
 }
 
 function print_message(){
@@ -18,5 +34,5 @@ g.setFontAlign(0,0);
 g.flip();
 
 print_message();
-setInterval(remind,1200000);
+setInterval(remind,settings.sitTime * 60000);
 

apps/getup/settings.js

@@ -0,0 +1,48 @@
+// This file should contain exactly one function, which shows the app's settings
+/**
+ * @param {function} back Use back() to return to settings menu
+ */
+(function(back) {
+  const SETTINGS_FILE = 'getup.settings.json';
+
+  // initialize with default settings...
+  let s = {
+    'sitTime' : 20
+    'moveTime' : 1
+  };
+  // ...and overwrite them with any saved values
+  // This way saved values are preserved if a new version adds more settings
+  const storage = require('Storage');
+  const saved = storage.readJSON(SETTINGS_FILE, 1) || {};
+  for (const key in saved) {
+    s[key] = saved[key];
+  }
+
+  // creates a function to safe a specific setting, e.g.  save('color')(1)
+  function save(key) {
+    return function (value) {
+      s[key] = value;
+      storage.write(SETTINGS_FILE, s);
+    };
+  }
+
+  const menu = {
+    '': { 'title': 'Get Up' },
+    '< Back': back,
+    'Sit time (min)': {
+      value: s.sitTime,
+      min: 0,
+      max: 10000,
+      step: 1,
+      onchange: save('sitTime'),
+    },
+    'Move time (min)': {
+      value: s.moveTime,
+      min: 0,
+      max: 5000,
+      step: 1,
+      onchange: save('moveTime'),
+    },
+  };
+  E.showMenu(menu);
+});