Seed in place, don't copy to /tmp

Fixes https://github.com/feross/webtorrent-desktop/issues/254

main/menu.js

@@ -117,12 +117,14 @@ function getMenuItem (label) {
 
 // Prompts the user for a file or folder, then makes a torrent out of the data
 function showCreateTorrent () {
+  // Allow only a single selection
+  // To create a multi-file torrent, the user must select a folder
   electron.dialog.showOpenDialog({
     title: 'Select a file or folder for the torrent file.',
-    properties: [ 'openFile', 'openDirectory', 'multiSelections' ]
+    properties: [ 'openFile', 'openDirectory' ]
   }, function (filenames) {
     if (!Array.isArray(filenames)) return
-    windows.main.send('dispatch', 'seed', filenames)
+    windows.main.send('dispatch', 'seed', filenames[0])
   })
 }
 

renderer/index.css

@@ -271,10 +271,32 @@ i:not(.disabled):hover {
   padding: 20px;
 }
 
+.create-torrent-modal input,
 .open-torrent-address-modal input {
   width: calc(100% - 100px)
 }
 
+.create-torrent-modal .torrent-attribute {
+  white-space: nowrap;
+}
+
+.create-torrent-modal .torrent-attribute>* {
+  display: inline-block;
+}
+
+.create-torrent-modal .torrent-attribute label {
+  width: 60px;
+  margin-right: 10px;
+  vertical-align: top;
+}
+
+.create-torrent-modal .torrent-attribute div {
+  font-family: Consolas, monospace;
+  white-space: nowrap;
+}
+
+
+
 /*
  * BUTTONS
  */

renderer/index.js

@@ -1,7 +1,7 @@
 console.time('init')
 
 var cfg = require('application-config')('WebTorrent')
-var createTorrent = require('create-torrent')
+var defaultAnnounceList = require('create-torrent').announceList
 var dragDrop = require('drag-drop')
 var electron = require('electron')
 var EventEmitter = require('events')
@@ -42,7 +42,7 @@ var dialog = remote.require('dialog')
 var state = global.state = require('./state')
 
 // Force use of webtorrent trackers on all torrents
-global.WEBTORRENT_ANNOUNCE = createTorrent.announceList
+global.WEBTORRENT_ANNOUNCE = defaultAnnounceList
   .map((arr) => arr[0])
   .filter((url) => url.indexOf('wss://') === 0 || url.indexOf('ws://') === 0)
 
@@ -207,13 +207,21 @@ function dispatch (action, ...args) {
     addTorrent(args[0] /* torrent */)
   }
   if (action === 'showCreateTorrent') {
-    ipcRenderer.send('showCreateTorrent')
+    ipcRenderer.send('showCreateTorrent') /* open file or folder to seed */
   }
   if (action === 'showOpenTorrentFile') {
-    ipcRenderer.send('showOpenTorrentFile')
+    ipcRenderer.send('showOpenTorrentFile') /* open torrent file */
   }
   if (action === 'seed') {
-    seed(args[0] /* files */)
+    // TODO: right now, creating a torrent thru File > Create New Torrent
+    // creates and starts seeding a new torrent directly, while dragging files
+    // or folders onto the app opens the create-torrent-modal
+    //
+    // That's because the former gets a single string and the latter gets a list
+    // of W3C File objects. We should fix this inconsitency, ideally without
+    // duping this code in the drag-drop module:
+    // https://github.com/feross/drag-drop/blob/master/index.js
+    createTorrent({files: args[0]} /* file or folder path */)
   }
   if (action === 'openFile') {
     openFile(args[0] /* infoHash */, args[1] /* index */)
@@ -316,6 +324,9 @@ function dispatch (action, ...args) {
   if (action === 'saveState') {
     saveState()
   }
+  if (action === 'createTorrent') {
+    createTorrent(args[0] /* options */)
+  }
 
   // Update the virtual-dom, unless it's just a mouse move event
   if (action !== 'mediaMouseMoved') {
@@ -445,7 +456,7 @@ function onOpen (files) {
   })
 
   // everything else = seed these files
-  seed(files.filter(isNotTorrent))
+  showCreateTorrentModal(files.filter(isNotTorrent))
 }
 
 function onPaste (e) {
@@ -553,10 +564,18 @@ function stopTorrenting (infoHash) {
   if (torrent) torrent.destroy()
 }
 
-// Creates a torrent for a local file and starts seeding it
+// Prompts the user to create a torrent for a local file or folder
-function seed (files) {
+function showCreateTorrentModal (files) {
   if (files.length === 0) return
-  var torrent = lazyLoadClient().seed(files)
+  state.modal = {
+    id: 'create-torrent-modal',
+    files: files
+  }
+}
+
+// Creates a new torrent and start seeeding
+function createTorrent (options) {
+  var torrent = state.client.seed(options.files, options)
   addTorrentToList(torrent)
   addTorrentEvents(torrent)
 }

renderer/views/app.js

@@ -9,7 +9,8 @@ var Player = require('./player')
 var TorrentList = require('./torrent-list')
 var Modals = {
   'open-torrent-address-modal': require('./open-torrent-address-modal'),
-  'update-available-modal': require('./update-available-modal')
+  'update-available-modal': require('./update-available-modal'),
+  'create-torrent-modal': require('./create-torrent-modal')
 }
 
 function App (state, dispatch) {
@@ -67,7 +68,7 @@ function App (state, dispatch) {
       return hx`
         <div class='modal'>
           <div class='modal-background'></div>
-          <div class='modal-content add-file-modal'>
+          <div class='modal-content'>
             ${contents}
           </div>
         </div>

renderer/views/create-torrent-modal.js

@@ -0,0 +1,76 @@
+module.exports = UpdateAvailableModal
+
+var h = require('virtual-dom/h')
+var hyperx = require('hyperx')
+var hx = hyperx(h)
+
+var path = require('path')
+
+var {dispatch} = require('../lib/dispatcher')
+
+function UpdateAvailableModal (state) {
+  // First, extract the base folder that the files are all in
+  var files = state.modal.files
+  var pathPrefix = files.map((x) => x.path).reduce(findCommonPrefix)
+  if (files.length > 0 && !pathPrefix.endsWith('/') && !pathPrefix.endsWith('\\')) {
+    pathPrefix = path.dirname(pathPrefix)
+  }
+
+  // Then, use the name of the base folder (or sole file, for a single file torrent)
+  // as the default name. Show all files relative to the base folder.
+  var defaultName = path.basename(pathPrefix)
+  var basePath = path.dirname(pathPrefix)
+  var fileElems = files.map(function (file) {
+    var relativePath = files.length === 0 ? file.name : path.relative(pathPrefix, file.path)
+    return hx`<div>${relativePath}</div>`
+  })
+
+  return hx`
+    <div class='create-torrent-modal'>
+      <p><strong>Create New Torrent</strong></p>
+      <p class='torrent-attribute'>
+        <label>Name:</label>
+        <div class='torrent-attribute'>${defaultName}</div>
+      </p>
+      <p class='torrent-attribute'>
+        <label>Path:</label>
+        <div class='torrent-attribute'>${pathPrefix}</div>
+      </p>
+      <p class='torrent-attribute'>
+        <label>Files:</label>
+        <div>${fileElems}</div>
+      </p>
+      <p>
+        <button class='primary' onclick=${handleOK}>Create Torrent</button>
+        <button class='cancel' onclick=${handleCancel}>Cancel</button>
+      </p>
+    </div>
+  `
+
+  function handleOK () {
+    var options = {
+      // TODO: we can't let the user choose their own name if we want WebTorrent
+      // to use the files in place rather than creating a new folder.
+      // name: document.querySelector('.torrent-name').value
+      name: defaultName,
+      path: basePath,
+      files: files
+    }
+    dispatch('createTorrent', options)
+    dispatch('exitModal')
+  }
+
+  function handleCancel () {
+    dispatch('exitModal')
+  }
+}
+
+// Finds the longest common prefix
+function findCommonPrefix (a, b) {
+  for (var i = 0; i < a.length && i < b.length; i++) {
+    if (a.charCodeAt(i) !== b.charCodeAt(i)) break
+  }
+  if (i === a.length) return a
+  if (i === b.length) return b
+  return a.substring(0, i)
+}