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830bcd0f C |
1 | 'use strict' |
2 | ||
3 | const parallel = require('async/parallel') | |
4 | const express = require('express') | |
5 | const fs = require('fs') | |
6 | const mongoose = require('mongoose') | |
7 | const path = require('path') | |
8 | ||
9 | const constants = require('../initializers/constants') | |
10 | const middlewares = require('../middlewares') | |
11 | const validators = middlewares.validators | |
12 | const validatorsVideos = validators.videos | |
13 | ||
14 | const Video = mongoose.model('Video') | |
15 | const router = express.Router() | |
16 | ||
17 | const opengraphComment = '<!-- opengraph tags -->' | |
18 | const embedPath = path.join(__dirname, '../../client/dist/standalone/videos/embed.html') | |
19 | const indexPath = path.join(__dirname, '../../client/dist/index.html') | |
20 | ||
21 | // Special route that add OpenGraph tags | |
22 | // Do not use a template engine for a so little thing | |
23 | router.use('/videos/watch/:id', validatorsVideos.videosGet, generateWatchHtmlPage) | |
24 | ||
25 | router.use('/videos/embed', function (req, res, next) { | |
26 | res.sendFile(embedPath) | |
27 | }) | |
28 | ||
29 | // --------------------------------------------------------------------------- | |
30 | ||
31 | module.exports = router | |
32 | ||
33 | // --------------------------------------------------------------------------- | |
34 | ||
35 | function addOpenGraphTags (htmlStringPage, video) { | |
36 | const thumbnailUrl = constants.CONFIG.WEBSERVER.URL + video.thumbnailPath | |
37 | const videoUrl = constants.CONFIG.WEBSERVER.URL + '/videos/watch/' | |
38 | ||
39 | const metaTags = { | |
40 | 'og:type': 'video', | |
41 | 'og:title': video.name, | |
42 | 'og:image': thumbnailUrl, | |
43 | 'og:url': videoUrl, | |
44 | 'og:description': video.description, | |
45 | ||
46 | 'name': video.name, | |
47 | 'description': video.description, | |
48 | 'image': thumbnailUrl, | |
49 | ||
50 | 'twitter:card': 'summary_large_image', | |
51 | 'twitter:site': '@Chocobozzz', | |
52 | 'twitter:title': video.name, | |
53 | 'twitter:description': video.description, | |
54 | 'twitter:image': thumbnailUrl | |
55 | } | |
56 | ||
57 | let tagsString = '' | |
58 | Object.keys(metaTags).forEach(function (tagName) { | |
59 | const tagValue = metaTags[tagName] | |
60 | ||
61 | tagsString += '<meta property="' + tagName + '" content="' + tagValue + '" />' | |
62 | }) | |
63 | ||
64 | return htmlStringPage.replace(opengraphComment, tagsString) | |
65 | } | |
66 | ||
67 | function generateWatchHtmlPage (req, res, next) { | |
68 | parallel({ | |
69 | file: function (callback) { | |
70 | fs.readFile(indexPath, callback) | |
71 | }, | |
72 | ||
73 | video: function (callback) { | |
74 | Video.load(req.params.id, callback) | |
75 | } | |
76 | }, function (err, results) { | |
77 | if (err) return next(err) | |
78 | ||
79 | const html = results.file.toString() | |
80 | const video = results.video.toFormatedJSON() | |
81 | ||
82 | const htmlStringPageWithTags = addOpenGraphTags(html, video) | |
83 | res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags) | |
84 | }) | |
85 | } |