Refractoring and add thumbnails support (without tests)

server/lib/videos.js

@@ -3,21 +3,39 @@
 const async = require('async')
 const config = require('config')
 const ffmpeg = require('fluent-ffmpeg')
+const fs = require('fs')
+const map = require('lodash/map')
 const pathUtils = require('path')
+
+const constants = require('../initializers/constants')
+const logger = require('../helpers/logger')
+const utils = require('../helpers/utils')
+const Videos = require('../models/videos')
 const webtorrent = require('../lib/webtorrent')
 
-const logger = require('../helpers/logger')
-const Videos = require('../models/videos')
-
 const uploadDir = pathUtils.join(__dirname, '..', '..', config.get('storage.uploads'))
+const thumbnailsDir = pathUtils.join(__dirname, '..', '..', config.get('storage.thumbnails'))
 
 const videos = {
+  createRemoteVideos: createRemoteVideos,
   getVideoDuration: getVideoDuration,
   getVideoState: getVideoState,
+  getVideoThumbnail: getVideoThumbnail,
+  removeVideosDataFromDisk: removeVideosDataFromDisk,
+  removeRemoteVideos: removeRemoteVideos,
   seed: seed,
   seedAllExisting: seedAllExisting
 }
 
+function createRemoteVideos (videos, callback) {
+  // Create the remote videos from the new pod
+  createRemoteVideoObjects(videos, function (err, remote_videos) {
+    if (err) return callback(err)
+
+    Videos.addRemotes(remote_videos, callback)
+  })
+}
+
 function getVideoDuration (video_path, callback) {
   ffmpeg.ffprobe(video_path, function (err, metadata) {
     if (err) return callback(err)
@@ -36,6 +54,51 @@ function getVideoState (video) {
   return { exist: exist, owned: owned }
 }
 
+function getVideoThumbnail (video_path, callback) {
+  const filename = pathUtils.basename(video_path) + '.jpg'
+  ffmpeg(video_path)
+    .on('error', callback)
+    .on('end', function () {
+      callback(null, filename)
+    })
+    .thumbnail({
+      count: 1,
+      folder: thumbnailsDir,
+      size: constants.THUMBNAILS_SIZE,
+      filename: filename
+    })
+}
+
+// Remove video datas from disk (video file, thumbnail...)
+function removeVideosDataFromDisk (videos, callback) {
+  async.each(videos, function (video, callback_each) {
+    fs.unlink(thumbnailsDir + video.thumbnail, function (err) {
+      if (err) logger.error('Cannot remove the video thumbnail')
+
+      if (getVideoState(video).owned === true) {
+        fs.unlink(uploadDir + video.namePath, function (err) {
+          if (err) {
+            logger.error('Cannot remove this video file.')
+            return callback_each(err)
+          }
+
+          callback_each(null)
+        })
+      } else {
+        callback_each(null)
+      }
+    })
+  }, callback)
+}
+
+function removeRemoteVideos (videos, callback) {
+  Videos.removeByIds(map(videos, '_id'), function (err) {
+    if (err) return callback(err)
+
+    removeVideosDataFromDisk(videos, callback)
+  })
+}
+
 function seed (path, callback) {
   logger.info('Seeding %s...', path)
 
@@ -69,3 +132,42 @@ function seedAllExisting (callback) {
 // ---------------------------------------------------------------------------
 
 module.exports = videos
+
+// ---------------------------------------------------------------------------
+
+function createRemoteVideoObjects (videos, callback) {
+  const remote_videos = []
+
+  async.each(videos, function (video, callback_each) {
+    // Creating the thumbnail for this remote video
+    utils.generateRandomString(16, function (err, random_string) {
+      if (err) return callback_each(err)
+
+      const thumbnail_name = random_string + '.jpg'
+      createThumbnailFromBase64(thumbnail_name, video.thumbnail_base64, function (err) {
+        if (err) return callback_each(err)
+
+        const params = {
+          name: video.name,
+          description: video.description,
+          magnetUri: video.magnetUri,
+          podUrl: video.podUrl,
+          duration: video.duration,
+          thumbnail: thumbnail_name
+        }
+        remote_videos.push(params)
+
+        callback_each(null)
+      })
+    })
+  },
+  function (err) {
+    if (err) return callback(err)
+
+    callback(null, remote_videos)
+  })
+}
+
+function createThumbnailFromBase64 (thumbnail_name, data, callback) {
+  fs.writeFile(thumbnailsDir + thumbnail_name, data, { encoding: 'base64' }, callback)
+}