Rotate log files once a week

apps.json

@@ -1136,7 +1136,7 @@
     "name": "Battery Chart",
     "shortName":"BatChart",
     "icon": "app.png",
-    "version":"0.02",
+    "version":"0.03",
     "description": "A widget and an app for recording and visualizing battery percentage over time.",
     "tags": "app,widget,battery,time,record,chart,tool",
     "storage": [

apps/batchart/ChangeLog

@@ -1,2 +1,3 @@
 0.01: New app and widget
-0.02: Widget stores data to file (1 dataset/min)
+0.02: Widget stores data to file (1 dataset/10min)
+0.03: Rotate log files once a week.

apps/batchart/app-icon.js

@@ -1 +1 @@
-require("heatshrink").decompress(atob("mEwxH+AH4A/AH4AS64AIF/4pZABYuuGDIv/F/4v/F9+Gw0rAQIASF7YxTF7cxwAvtrdVF9qQTF/4vMYCQvcYCQvcSCQvdqpgQF7oEBYJ4veAoNbF9uGmMrrgvsw2AGILFKF8IACrYxJF8gxDSowvmBwWAF9oPGF9NbmIvtCAovqMAgvqCIgvrrdVF9oSDF9iPuF7crACxf/F++wFqmG2AvXGCouZAH4A/AGY"))
+require("heatshrink").decompress(atob("mEwxH+AH4A/AH4AS64AIF/4pZABYuuGDIv/F/4v/F9+Gw0rAQIASF7YxTF7cxwAvtrdVF9qQTF/4vMYCQvcYCQvcSCQvdqpgQF7oEBYJ4veAoNbF9uGmMrrgvsw2AGILFKF8IACrYxJF8gxDSowvmBwWAF9oPGF9NbmIvtCAovqMAgvqCIgvrrdVF9oSDF9iPuF7crACxf/F++wFqmG2AvXGCouZAH4A/AGY"))

apps/batchart/widget.js

@@ -6,7 +6,8 @@
     bluetooth: 4,
     gps: 8,
     hrm: 16
-  }
+  };
+
   var settings = {};
   var batChartFile; // file for battery percentage recording
   const recordingInterval10Min = 60 * 10 * 1000;
@@ -20,26 +21,6 @@
     g.drawString("BC", this.x, this.y);
   }
 
-  // Called by the heart app to reload settings and decide what's
-  function reload() {
-    WIDGETS["batchart"].width = 24;
-
-    // Check if the data file exists, if not try to create it.
-    var batChartFileCheck = require("Storage").open("batchart.dat", "r");
-    if (!batChartFileCheck)
-      if (!require("Storage").write("batchart.dat", ""))
-        //Only continue if the file was created
-        return;
-    
-    recordingInterval = setInterval(() => {
-      var batChartFileAppend = require("Storage").open("batchart.dat", "a");
-      if (batChartFileAppend) {    
-        console.log([getTime().toFixed(0), E.getBattery(), E.getTemperature(), getEnabledConsumersValue()].join(","));
-        batChartFileAppend.write([getTime().toFixed(0),E.getBattery].join(",")+"\n");
-      }
-    }, recordingInterval1Min)
-  }
-
   function getEnabledConsumersValue() {
     var enabledConsumers = switchableConsumers.none;
 
@@ -54,10 +35,40 @@
     //   enabledConsumers = enabledConsumers | switchableConsumers.gps;
     // if (Bangle.isHrmOn())
     //   enabledConsumers = enabledConsumers | switchableConsumers.hrm;
-    
+
     return enabledConsumers;
   }
 
+  function logBatteryData() {
+    const previousWriteLogName = "bcprvday";
+    const previousWriteDay = require("Storage").read(previousWriteLogName);
+    const currentWriteDay = new Date().getDay();
+
+    const logFileName = "bclog" + currentWriteDay;
+
+    // Change log target on day change
+    if (previousWriteDay != currentWriteDay) {
+      //Remove a log file containing data from a week ago
+      require("Storage").erase(logFileName);
+      require("Storage").write(previousWriteLogName, currentWriteDay);
+    }
+
+    var bcLogFileA = require("Storage").open(logFileName, "a");
+    if (bcLogFileA) {
+      console.log([getTime().toFixed(0), E.getBattery(), E.getTemperature(), getEnabledConsumersValue()].join(","));
+      bcLogFileA.write([[getTime().toFixed(0), E.getBattery(), E.getTemperature(), getEnabledConsumersValue()].join(",")].join(",")+"\n");
+    }
+  }
+
+  // Called by the heart app to reload settings and decide what's
+  function reload() {
+    WIDGETS["batchart"].width = 24;
+
+    recordingInterval = setInterval(logBatteryData, recordingInterval10Min);
+
+    logBatteryData();
+  }
+
   // add the widget
   WIDGETS["batchart"]={area:"tl",width:24,draw:draw,reload:function() {
     reload();