android:gb activity tracks continued development

apps/android/boot.js

@@ -197,14 +197,24 @@
           lastSteps = steps;
         }, event.int*1000);
       },
-      "fetchRec": function() {
-        // TODO: Loop from last fetched log up to current date and through the whole alphabet for the last letter.
+
+
+      "listRecs": function() {
+        let recs = require("Storage").list(/^recorder\.log.*\.csv$/,{sf:true}).map(s => s.slice(12, 21));
+        Bluetooth.println(JSON.stringify({t:"tracksList", list: recs})); // TODO: split up in multiple transmissions?
+      },
+
+      "fetchRec": function() { // GB({t:"fetchRec", id:"20230616a"})
         // TODO: Decide on what names keys should have.
-        let lastLog = event.lastFetchedLog;
-        let log = require("Storage").open("recorder.log"+lastLog+".csv","r"); // TODO: Change to loop variable.
-        let logString = log.read(log.getLength());
-        Bluetooth.println(JSON.stringify({t:"activityTrack", csv:logString, currentLog:"log name here"}));
+        let log = require("Storage").open("recorder.log"+event.id+".csv","r");
+        let line = log.readLine();
+        while (line) {
+          Bluetooth.println(JSON.stringify({t:"activityTrack", log:event.id, line:line}));
+          line = log.readLine();
+        }
       },
+
+
       "nav": function() {
         event.id="nav";
         if (event.instr) {