qmsched: Simplify scheduling logic

Instead of keeping track when a schedule last fired, just check if the
time is in the future.

apps.json

@@ -3245,7 +3245,7 @@
   "name": "Quiet Mode Schedule",
   "shortName":"Quiet Mode",
   "icon": "app.png",
-  "version":"0.01",
+  "version":"0.02",
   "description": "Automatically turn Quiet Mode on or off at set times",
   "readme": "README.md",
   "tags": "tool",

apps/qmsched/ChangeLog

@@ -1 +1,2 @@
 0.01: First version
+0.02: Simplify scheduling logic

apps/qmsched/app.js

@@ -5,18 +5,25 @@ const modeNames = ["Off", "Alarms", "Silent"];
 let scheds = require("Storage").readJSON("qmsched.json", 1);
 /*scheds = [
   { hr : 6.5, // hours + minutes/60
-    last : 0, // last day of the month we fired on - so we don't switch twice in one day!
     mode : 1, // quiet mode (0/1/2)
   }
 ];*/
 if (!scheds) {
   // set default schedule on first load of app
   scheds = [
-    {"hr": 8, "mode": 0, "last": 25},
-    {"hr": 22, "mode": 1, "last": 25},
+    {"hr": 8, "mode": 0},
+    {"hr": 22, "mode": 1},
   ];
   require("Storage").writeJSON("qmsched.json", scheds);
 }
+if (scheds.length && scheds.some(s => "last" in s)) {
+  // cleanup: remove "last" values (used by old versions)
+  scheds = scheds.map(s => {
+    delete s.last;
+    return s;
+  });
+  require("Storage").writeJSON("qmsched.json", scheds);
+}
 
 function formatTime(t) {
   const hrs = 0|t;
@@ -24,11 +31,6 @@ function formatTime(t) {
   return (" "+hrs).substr(-2)+":"+("0"+mins).substr(-2);
 }
 
-function getCurrentHr() {
-  const time = new Date();
-  return time.getHours()+(time.getMinutes()/60)+(time.getSeconds()/3600);
-}
-
 function showMainMenu() {
   const menu = {
     "": {"title": "Quiet Mode"},
@@ -36,8 +38,8 @@ function showMainMenu() {
       value: (require("Storage").readJSON("setting.json", 1) || {}).quiet|0,
       format: v => modeNames[v],
       onchange: function(v) {
-        if (v<0) v = 2;
-        if (v>2) v = 0;
+        if (v<0) {v = 2;}
+        if (v>2) {v = 0;}
         require("qmsched").setMode(v);
         this.value = v;
       },
@@ -71,8 +73,8 @@ function showEditMenu(index) {
     "Hours": {
       value: hrs,
       onchange: function(v) {
-        if (v<0) v = 23;
-        if (v>23) v = 0;
+        if (v<0) {v = 23;}
+        if (v>23) {v = 0;}
         hrs = v;
         this.value = v;
       }, // no arrow fn -> preserve 'this'
@@ -80,8 +82,8 @@ function showEditMenu(index) {
     "Minutes": {
       value: mins,
       onchange: function(v) {
-        if (v<0) v = 59;
-        if (v>59) v = 0;
+        if (v<0) {v = 59;}
+        if (v>59) {v = 0;}
         mins = v;
         this.value = v;
       }, // no arrow fn -> preserve 'this'
@@ -90,24 +92,17 @@ function showEditMenu(index) {
       value: mode,
       format: v => modeNames[v],
       onchange: function(v) {
-        if (v<0) v = 2;
-        if (v>2) v = 0;
+        if (v<0) {v = 2;}
+        if (v>2) {v = 0;}
         mode = v;
         this.value = v;
       }, // no arrow fn -> preserve 'this'
     },
   };
   function getSched() {
-    const hr = hrs+(mins/60);
-    let day = 0;
-    // If schedule is for tomorrow not today (eg, in the past), set day
-    if (hr<getCurrentHr()) {
-      day = (new Date()).getDate();
-    }
     return {
-      hr: hr,
+      hr: hrs+(mins/60),
       mode: mode,
-      last: day,
     };
   }
   menu["> Save"] = function() {

apps/qmsched/boot.js

@@ -1,24 +1,19 @@
 // apply Quiet Mode schedules
 (function qm() {
   let scheds = require("Storage").readJSON("qmsched.json", 1) || [];
-  if (!scheds.length) return;
-  let next,idx;
-  scheds.forEach(function(s, i) {
-    if (!next || (s.hr+s.last*24)<(next.hr+next.last*24)) {
-      next = s;
-      idx = i;
-    }
-  });
+  if (!scheds.length) { return;}
   const now = new Date(),
-    hr = now.getHours()+(now.getMinutes()/60)+(now.getSeconds()/3600);
-  let t = 3600000*(next.hr-hr);
-  if (next.last===now.getDate()) t += 86400000;
+    hr = now.getHours()+(now.getMinutes()/60)+(now.getSeconds()/3600); // current (decimal) hour
+  scheds.sort((a, b) => a.hr-b.hr);
+  const tday = scheds.filter(s => s.hr>hr),  // scheduled for today
+    tmor = scheds.filter(s => s.hr<=hr); // scheduled for tomorrow
+  const next = tday.length ? tday[0] : tmor[0],
+    mode = next.mode;
+  let t = 3600000*(next.hr-hr); // timeout in milliseconds
+  if (t<0) {t += 86400000;} // scheduled for tomorrow: add a day
   /* update quiet mode at the correct time. */
-  setTimeout(function() {
-    let scheds = require("Storage").readJSON("qmsched.json", 1) || [];
-    require("qmsched").setMode(scheds[idx].mode);
-    scheds[idx].last = (new Date()).getDate();
-    require("Storage").writeJSON("qmsched.json", scheds);
+  setTimeout(() => {
+    require("qmsched").setMode(mode);
     qm(); // schedule next update
   }, t);
 })();