drained: emit "drained" event

apps/drained/README.md

@@ -20,6 +20,7 @@ With this app installed, your Bangle will automatically switch into low power mo
 
 ## Features
 - [x] Wake on twist -> off (#2502)
+- [x] Emit `"drained"` event
 
 # Creator
 

apps/drained/app.js

@@ -57,3 +57,4 @@ Bangle.setUI({
 Bangle.CLOCK = 1;
 g.clear();
 draw();
+Bangle.emit("drained", E.getBattery());

apps/drained/app.ts

@@ -76,3 +76,6 @@ Bangle.CLOCK=1;
 
 g.clear();
 draw();
+
+// permit other apps to put themselves into low-power mode
+Bangle.emit("drained", E.getBattery());

apps/drained/boot.js

@@ -1,16 +1,16 @@
 "use strict";
-var _a = require("Storage").readJSON("drained.setting.json", true) || {}, _b = _a.battery, battery = _b === void 0 ? 5 : _b, _c = _a.interval, interval = _c === void 0 ? 10 : _c, _d = _a.disableBoot, disableBoot = _d === void 0 ? false : _d;
-if (disableBoot) {
+var _a = require("Storage").readJSON("drained.setting.json", true) || {}, _b = _a.battery, threshold = _b === void 0 ? 5 : _b, _c = _a.interval, interval = _c === void 0 ? 10 : _c, _d = _a.disableBoot, disableBoot = _d === void 0 ? false : _d;
+drainedInterval = setInterval(function () {
+    if (Bangle.isCharging())
+        return;
+    if (E.getBattery() > threshold)
+        return;
+    if (disableBoot) {
         require("Storage").erase(".boot0");
         Bangle.on("charging", function (charging) {
             if (charging)
                 eval(require('Storage').read('bootupdate.js'));
         });
-}
-drainedInterval = setInterval(function () {
-    if (Bangle.isCharging())
-        return;
-    if (E.getBattery() > battery)
-        return;
+    }
     load("drained.app.js");
 }, interval * 60 * 1000);

apps/drained/boot.ts

@@ -1,20 +1,20 @@
-const { battery = 5, interval = 10, disableBoot = false }: DrainedSettings
+const { battery: threshold = 5, interval = 10, disableBoot = false }: DrainedSettings
   = require("Storage").readJSON(`drained.setting.json`, true) || {};
 
-if(disableBoot){
+drainedInterval = setInterval(() => {
+  if(Bangle.isCharging())
+    return;
+  if(E.getBattery() > threshold)
+    return;
+
+  if(disableBoot){
     require("Storage").erase(".boot0");
 
     Bangle.on("charging", charging => {
       if (charging)
         eval(require('Storage').read('bootupdate.js'));
     });
-}
-
-drainedInterval = setInterval(() => {
-  if(Bangle.isCharging())
-    return;
-  if(E.getBattery() > battery)
-    return;
+  }
 
   load("drained.app.js");
 }, interval * 60 * 1000);