recorder interface: add download-all functionality

apps/recorder/interface.html

@@ -159,6 +159,28 @@ function downloadTrack(filename, callback) {
   });
 }
 
+function downloadAll(trackList, cb) {
+  const tracks = trackList.slice();
+
+  const downloadOne = () => {
+    const track = tracks.pop();
+    if(!track) {
+      showToast("Finished downloading all.", "success");
+      return;
+    }
+
+    downloadTrack(
+      track.filename,
+      lines => {
+        cb(lines, `Bangle.js Track ${track.number}`);
+        downloadOne();
+      }
+    );
+  };
+
+  downloadOne();
+}
+
 function getTrackList() {
   Util.showModal("Loading Track List...");
   domTracks.innerHTML = "";
@@ -248,6 +270,12 @@ ${trackData.Latitude ? `
       }
       html += `
         </div><!-- columns -->
+        <h2>Batch</h2>
+        <div class="form-group">
+          <button class="btn btn-primary" task="downloadkml_all">Download all KML</button>
+          <button class="btn btn-primary" task="downloadgpx_all">Download all GPX</button>
+          <button class="btn btn-primary" task="downloadcsv_all">Download all CSV</button>
+        </div>
         <h2>Settings</h2>
         <div class="form-group">
           <label class="form-switch">
@@ -268,8 +296,10 @@ ${trackData.Latitude ? `
             var button = event.currentTarget;
             var filename = button.getAttribute("filename");
             var trackid = parseInt(button.getAttribute("trackid"));
-            if (!filename || trackid===undefined) return;
             var task = button.getAttribute("task");
+
+            if (!/_all$/.test(task) && (!filename || trackid===undefined)) return;
+
             switch(task) {
               case "delete":
                 Util.showModal("Deleting Track...");
@@ -288,6 +318,16 @@ ${trackData.Latitude ? `
               case "downloadcsv":
                 downloadTrack(filename, track => saveCSV(track, `Bangle.js Track ${trackid}`));
                 break;
+
+              case "downloadkml_all":
+                downloadAll(trackList, saveKML);
+                break;
+              case "downloadgpx_all":
+                downloadAll(trackList, saveGPX);
+                break;
+              case "downloadcsv_all":
+                downloadAll(trackList, saveCSV);
+                break;
             }
           });
         }