Add import torrent from magnet

gadget/gadget_cribjs_page_save_load.html

@@ -59,6 +59,16 @@
         </label>
           <textarea name="load-zip-path" class="magnet-link form-control" readonly value="cribeditor/v1.1">Data</textarea>
       </div>
+    <form class="crib-import-torrent form-inline">
+      <h3>Import from zip Torrent</h3>
+      <div class="log" style="display:none;">
+      </div>
+      <div class="form-group">
+        <label>Magnet:
+          <input name="zip-magnet" class="zip-magnet form-control" type="text" size="40"></label>
+      </div>
+      <button name="load-zip-magnet" class="load-zip-magnet btn btn-default" type="submit">Import from Torrent</button>
+    </form>
     </div>
     <div data-gadget-url="./gadget_jio.html"
          data-gadget-scope="jio_gadget"

gadget/gadget_cribjs_page_save_load.js

 /*global window, rJS, loopEventListener, RSVP, console, document, saveAs, WebTorrent,
-  File*/
+  File, setInterval, clearInterval*/
 /*jslint nomen: true, indent: 2, maxerr: 3*/
 (function (window, rJS, loopEventListener, JSZip, FileSaver, WebTorrent) {
   "use strict";
@@ -12,6 +12,46 @@
     return "." + extension;
   }
 
+  function log(gadget, str) {
+    var p = document.createElement('p'),
+      old_p_element = gadget.props.element.querySelector('.log p'),
+      log_element = gadget.props.element.querySelector('.log');
+    if (old_p_element) {
+      old_p_element.remove();
+    }
+    p.innerHTML = str;
+    log_element.style.display = "";
+    log_element.appendChild(p);
+  }
+
+  function downloadTorrent(gadget, torrentId) {
+    return RSVP.Promise(function (resolve, reject) {
+      var client = new WebTorrent();
+      client.on('error', function (err) {
+        reject(err.message);
+      });
+      client.add(torrentId, function (torrent) {
+        log(gadget, 'Got torrent metadata!');
+        log(gadget,
+          'Torrent info hash: ' + torrent.infoHash + ' ' +
+          '<a href="' + torrent.magnetURI + '" target="_blank">[Magnet URI]</a> ' +
+          '<a href="' + torrent.torrentFileBlobURL + '" target="_blank" download="' + torrent.name + '.torrent">[Download .torrent]</a>'
+        );
+        // Torrents can contain many files. Here we suppose there is only one zip
+        var interval = setInterval(function () {
+          log(gadget, 'Progress: ' + (torrent.progress * 100).toFixed(1) + '%');
+        }, 5000);
+        torrent.on('done', function () {
+          log(gadget, "Done");
+          resolve(torrent.files);
+          clearInterval(interval);
+        });
+
+      });
+
+    });
+  }
+
   // Zip Methods
   function prepareZip(gadget, event, options) {
     var path_to_save, path_to_save_length, crib_sw_gadget,
@@ -110,21 +150,39 @@
       .push(console.log, console.log);
   }
 
-  function loadContentFromZIP(gadget, event) {
-    var path_to_load, path_to_load_length, file_list, crib_sw_gadget,
-      jio_gadget, url_list = [], file, url_number = 0;
-    path_to_load = gadget.props.element.querySelector('form.crib-load-from-zip .load-zip-path').value;
+  function loadContentFromZIPFile(gadget, event) {
+    var file_list, file;
     file_list = gadget.props.element.querySelector('form.crib-load-from-zip .load-zip-file').files;
     if (file_list.length === 0) {
       gadget.props.element.querySelector(".crib-load-from-zip-status")
         .textContent = "Please put a Zip at " + Date();
       return;
     }
-    path_to_load_length = path_to_load.length;
     file = file_list[0];
+    return loadContentFromZIP(gadget, event, file);
+  }
+
+  function loadContentFromZIPMagnet(gadget, event) {
+    var magnet;
+    magnet = gadget.props.element.querySelector('form.crib-import-torrent .zip-magnet').value;
+    return RSVP.Queue()
+      .push(function () {
+        return downloadTorrent(gadget, magnet);
+      })
+      .push(function (files) {
+        return loadContentFromZIP(gadget, event, files[0]);
+      });
+
+  }
+
+  function loadContentFromZIP(gadget, event, zip_data) {
+    var path_to_load, path_to_load_length, file_list, crib_sw_gadget,
+      jio_gadget, url_list = [], file, url_number = 0;
+    path_to_load = gadget.props.element.querySelector('form.crib-load-from-zip .load-zip-path').value;
+    path_to_load_length = path_to_load.length;
     return new RSVP.Queue()
     .push(function () {
-      return JSZip.loadAsync(file);
+      return JSZip.loadAsync(zip_data);
     })
     .push(function (zip) {
       var promise_list = [];
@@ -212,7 +270,7 @@
             gadget.props.element.querySelector(".crib-load-from-zip"),
             'submit',
             false,
-            function (event) {loadContentFromZIP(gadget, event); }
+            function (event) {loadContentFromZIPFile(gadget, event); }
           ));
           promise_list.push(loopEventListener(
             gadget.props.element.querySelector(".crib-export-torrent"),
@@ -220,6 +278,12 @@
             false,
             function (event) {seedZip(gadget, event); }
           ));
+          promise_list.push(loopEventListener(
+            gadget.props.element.querySelector(".crib-import-torrent"),
+            'submit',
+            false,
+            function (event) {loadContentFromZIPMagnet(gadget, event); }
+          ));
           return RSVP.all(promise_list);
         });
     });