fix file saving

apps/phystrax/app.js

@@ -4,6 +4,7 @@ let lcdTimeout;
 let logData = [];
 let bpmValues = [];
 let lastLogTime = 0;
+const MAX_LOGS = 9;
 
 function startMeasure() {
     isMeasuring = true;
@@ -58,7 +59,6 @@ function handleHeartRate(hrm) {
     }
 }
 
-
 function calcSDNN() {
     if (bpmValues.length < 5) return 0; // No calculation if insufficient data
 
@@ -87,14 +87,14 @@ function drawScreen(message) {
     g.clear(); // Clear the display
 
     // Set the background color
-    g.setColor('#95E7FF'); 
+    g.setColor('#95E7FF');
 
     // Fill the entire display with the background color
     g.fillRect(0, 0, g.getWidth(), g.getHeight());
 
     // Set font and alignment for drawing text
     g.setFontAlign(0, 0);
-    g.setFont('Vector', 15); 
+    g.setFont('Vector', 15);
 
     // Draw the title
     g.setColor('#000000'); // Set text color to black
@@ -111,7 +111,6 @@ function drawScreen(message) {
             g.drawString(currentHR.toString(), g.getWidth() / 2, g.getHeight() / 2 + 20);
             g.setFont('6x8', 1.6);
             g.drawString(' BPM', g.getWidth() / 2 + 42, g.getHeight() / 2 + 20);
-
         }
 
         // Draw instructions
@@ -126,7 +125,6 @@ function drawScreen(message) {
             g.drawString(currentHR.toString(), g.getWidth() / 2, g.getHeight() / 2 + 10);
             g.setFont('6x8', 1.6);
             g.drawString(' BPM', g.getWidth() / 2 + 42, g.getHeight() / 2 + 12);
-
         } else {
             g.setFont('6x8', 2);
             g.drawString('No data', g.getWidth() / 2, g.getHeight() / 2 + 10);
@@ -144,7 +142,15 @@ function saveDataToCSV() {
     logData.forEach(entry => {
         csvContent += `${entry.timestamp},${entry.heartRate},${entry.hrv}\n`;
     });
-    require("Storage").write("heart_rate_data.csv", csvContent);
+
+    // Find an available file number
+    let fileNum = 0;
+    while (require("Storage").read(`heart_rate_data_${fileNum}.csv`) !== undefined && fileNum <= MAX_LOGS) {
+        fileNum++;
+    }
+
+    // Write data to a CSV file
+    require("Storage").write(`heart_rate_data_${fileNum}.csv`, csvContent);
 }
 
 setWatch(function() {

apps/phystrax/interface.html

@@ -9,36 +9,54 @@
     <script>
 var dataElement = document.getElementById("data");
 
-function getHeartRateData() {
+function getData() {
+  // show loading window
   Util.showModal("Loading...");
+  // get the data
   dataElement.innerHTML = "";
+  var promise = Promise.resolve();
   Puck.eval('require("Storage").list(/heart_rate_data\\.csv\\x01/)', files => {
     if (files.length == 0) {
       dataElement.innerHTML = "<p>No heart rate data found</p>";
     } else {
       files.forEach(fn => {
         fn = fn.slice(0, -1);
-        var link = document.createElement("a");
-        link.setAttribute("href", "#");
-        link.textContent = fn;
-        link.addEventListener("click", function() {
-          Util.showModal("Downloading...");
-          Util.readStorageFile(fn, function(data) {
-            Util.saveCSV(fn.slice(0, -4), data);
-            Util.hideModal();
+        dataElement.innerHTML += `
+<div class="card">
+  <div class="card-header">
+    <div class="card-title h5">${fn}</div>
+  </div>
+  <div class="card-footer">
+    <button class="btn btn-primary" fn="${fn}" act="save">Save</button>
+    <button class="btn" fn="${fn}" act="delete">Delete</button>
+  </div>
+</div>`;
+        promise = promise.then(function() {
+          document.querySelector(`.btn[fn='${fn}'][act='save']`).addEventListener("click", function() {
+            Util.showModal("Downloading...");
+            Util.readStorageFile(fn, function(data) {
+              Util.saveCSV(fn.slice(0, -4), data);
+              Util.hideModal();
+            });
+          });
+          document.querySelector(`.btn[fn='${fn}'][act='delete']`).addEventListener("click", function() {
+            Util.showModal("Deleting...");
+            Util.eraseStorageFile(fn, function() {
+              Util.hideModal();
+              getData();
+            });
           });
         });
-        dataElement.appendChild(link);
-        dataElement.appendChild(document.createElement("br"));
       });
     }
+    // remove window
     Util.hideModal();
   });
 }
 
 // Called when app starts
 function onInit() {
-  getHeartRateData();
+  getData();
 }
     </script>
   </body>

apps/phystrax/metadata.json

@@ -8,11 +8,9 @@
   "interface": "interface.html",
   "readme": "README.md",
   "supports": ["BANGLEJS2"],
-  "permissions": {
-    "read": ["file"]
-  },
   "storage": [
     {"name":"phystrax.app.js","url":"app.js"},
     {"name":"phystrax.img","url":"app-icon.js","evaluate":true}
-  ]
+  ],
+  "data": [{"wildcard":"heart_rate_data.?.csv"}]
 }