Rearrange app directory structure

client/source/scripts/util/selectTorrents.js

@@ -0,0 +1,62 @@
+export function selectTorrents(options) {
+  if (options.event.shiftKey) {
+    if (options.selectedTorrents.length) {
+      let lastHash = options.selectedTorrents[
+        options.selectedTorrents.length - 1
+      ];
+      let currentHashIndex;
+      let lastHashIndex;
+
+      // get the index of the last selected torrent.
+      options.torrentList.some(function(torrent, index) {
+        if (torrent.hash === lastHash) {
+          lastHashIndex = index;
+          return true;
+        }
+      });
+
+      // get the index of the newly selected torrent.
+      options.torrentList.some(function(torrent, index) {
+        if (torrent.hash === options.hash) {
+          currentHashIndex = index;
+          return true;
+        }
+      });
+
+      // from the previously selected index to the currently selected index,
+      // add all torrent hashes to the selected array.
+      // if the newly selcted hash is larger than the previous, start from
+      // the newly selected hash and work backwards. otherwise go forwards.
+      let increment = 1;
+
+      if (currentHashIndex > lastHashIndex) {
+        increment = -1;
+      }
+
+      while (currentHashIndex !== lastHashIndex) {
+        let foundHash = options.torrentList[currentHashIndex].hash;
+        // if the torrent isn't already selected, add the hash to the array.
+        if (options.selectedTorrents.indexOf(foundHash) === -1) {
+          options.selectedTorrents.push(foundHash);
+        }
+        currentHashIndex += increment;
+      }
+    } else {
+      options.selectedTorrents = [options.hash];
+    }
+
+  } else if (options.event.metaKey || options.event.ctrlKey) {
+    let hashPosition = options.selectedTorrents.indexOf(options.hash);
+    if (hashPosition === -1) {
+      // if the hash is not in the array, add it.
+      options.selectedTorrents.push(options.hash);
+    } else {
+      // if the hash is in the array, remove it.
+      options.selectedTorrents.splice(hashPosition, 1);
+    }
+  } else {
+    // clicked torrent is only item in list.
+    options.selectedTorrents = [options.hash];
+  }
+  return options.selectedTorrents;
+}