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1 | import express from 'express' | |
2 | import { readFile } from 'fs-extra' | |
3 | import memoizee from 'memoizee' | |
4 | import { join } from 'path' | |
5 | import validator from 'validator' | |
6 | import { toCompleteUUID } from '@server/helpers/custom-validators/misc' | |
7 | import { ActorImageModel } from '@server/models/actor/actor-image' | |
8 | import { root } from '@shared/core-utils' | |
9 | import { escapeHTML } from '@shared/core-utils/renderer' | |
10 | import { sha256 } from '@shared/extra-utils' | |
11 | import { HTMLServerConfig } from '@shared/models' | |
12 | import { buildFileLocale, getDefaultLocale, is18nLocale, POSSIBLE_LOCALES } from '../../shared/core-utils/i18n/i18n' | |
13 | import { HttpStatusCode } from '../../shared/models/http/http-error-codes' | |
14 | import { VideoPlaylistPrivacy, VideoPrivacy } from '../../shared/models/videos' | |
15 | import { isTestInstance } from '../helpers/core-utils' | |
16 | import { logger } from '../helpers/logger' | |
17 | import { mdToOneLinePlainText } from '../helpers/markdown' | |
18 | import { CONFIG } from '../initializers/config' | |
19 | import { | |
20 | ACCEPT_HEADERS, | |
21 | CUSTOM_HTML_TAG_COMMENTS, | |
22 | EMBED_SIZE, | |
23 | FILES_CONTENT_HASH, | |
24 | MEMOIZE_LENGTH, | |
25 | MEMOIZE_TTL, | |
26 | PLUGIN_GLOBAL_CSS_PATH, | |
27 | WEBSERVER | |
28 | } from '../initializers/constants' | |
29 | import { AccountModel } from '../models/account/account' | |
30 | import { getActivityStreamDuration } from '../models/video/formatter/video-format-utils' | |
31 | import { VideoModel } from '../models/video/video' | |
32 | import { VideoChannelModel } from '../models/video/video-channel' | |
33 | import { VideoPlaylistModel } from '../models/video/video-playlist' | |
34 | import { MAccountActor, MChannelActor } from '../types/models' | |
35 | import { getBiggestActorImage } from './actor-image' | |
36 | import { ServerConfigManager } from './server-config-manager' | |
37 | ||
38 | const getPlainTextDescriptionCached = memoizee(mdToOneLinePlainText, { | |
39 | maxAge: MEMOIZE_TTL.MD_TO_PLAIN_TEXT_CLIENT_HTML, | |
40 | max: MEMOIZE_LENGTH.MD_TO_PLAIN_TEXT_CLIENT_HTML | |
41 | }) | |
42 | ||
43 | type Tags = { | |
44 | ogType: string | |
45 | twitterCard: 'player' | 'summary' | 'summary_large_image' | |
46 | schemaType: string | |
47 | ||
48 | list?: { | |
49 | numberOfItems: number | |
50 | } | |
51 | ||
52 | escapedSiteName: string | |
53 | escapedTitle: string | |
54 | escapedDescription: string | |
55 | ||
56 | url: string | |
57 | originUrl: string | |
58 | ||
59 | disallowIndexation?: boolean | |
60 | ||
61 | embed?: { | |
62 | url: string | |
63 | createdAt: string | |
64 | duration?: string | |
65 | views?: number | |
66 | } | |
67 | ||
68 | image: { | |
69 | url: string | |
70 | width?: number | |
71 | height?: number | |
72 | } | |
73 | } | |
74 | ||
75 | class ClientHtml { | |
76 | ||
77 | private static htmlCache: { [path: string]: string } = {} | |
78 | ||
79 | static invalidCache () { | |
80 | logger.info('Cleaning HTML cache.') | |
81 | ||
82 | ClientHtml.htmlCache = {} | |
83 | } | |
84 | ||
85 | static async getDefaultHTMLPage (req: express.Request, res: express.Response, paramLang?: string) { | |
86 | const html = paramLang | |
87 | ? await ClientHtml.getIndexHTML(req, res, paramLang) | |
88 | : await ClientHtml.getIndexHTML(req, res) | |
89 | ||
90 | let customHtml = ClientHtml.addTitleTag(html) | |
91 | customHtml = ClientHtml.addDescriptionTag(customHtml) | |
92 | ||
93 | return customHtml | |
94 | } | |
95 | ||
96 | static async getWatchHTMLPage (videoIdArg: string, req: express.Request, res: express.Response) { | |
97 | const videoId = toCompleteUUID(videoIdArg) | |
98 | ||
99 | // Let Angular application handle errors | |
100 | if (!validator.isInt(videoId) && !validator.isUUID(videoId, 4)) { | |
101 | res.status(HttpStatusCode.NOT_FOUND_404) | |
102 | return ClientHtml.getIndexHTML(req, res) | |
103 | } | |
104 | ||
105 | const [ html, video ] = await Promise.all([ | |
106 | ClientHtml.getIndexHTML(req, res), | |
107 | VideoModel.loadWithBlacklist(videoId) | |
108 | ]) | |
109 | ||
110 | // Let Angular application handle errors | |
111 | if (!video || video.privacy === VideoPrivacy.PRIVATE || video.privacy === VideoPrivacy.INTERNAL || video.VideoBlacklist) { | |
112 | res.status(HttpStatusCode.NOT_FOUND_404) | |
113 | return html | |
114 | } | |
115 | const description = getPlainTextDescriptionCached(video.description) | |
116 | ||
117 | let customHtml = ClientHtml.addTitleTag(html, video.name) | |
118 | customHtml = ClientHtml.addDescriptionTag(customHtml, description) | |
119 | ||
120 | const url = WEBSERVER.URL + video.getWatchStaticPath() | |
121 | const originUrl = video.url | |
122 | const title = video.name | |
123 | const siteName = CONFIG.INSTANCE.NAME | |
124 | ||
125 | const image = { | |
126 | url: WEBSERVER.URL + video.getPreviewStaticPath() | |
127 | } | |
128 | ||
129 | const embed = { | |
130 | url: WEBSERVER.URL + video.getEmbedStaticPath(), | |
131 | createdAt: video.createdAt.toISOString(), | |
132 | duration: getActivityStreamDuration(video.duration), | |
133 | views: video.views | |
134 | } | |
135 | ||
136 | const ogType = 'video' | |
137 | const twitterCard = CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image' | |
138 | const schemaType = 'VideoObject' | |
139 | ||
140 | customHtml = ClientHtml.addTags(customHtml, { | |
141 | url, | |
142 | originUrl, | |
143 | escapedSiteName: escapeHTML(siteName), | |
144 | escapedTitle: escapeHTML(title), | |
145 | escapedDescription: escapeHTML(description), | |
146 | image, | |
147 | embed, | |
148 | ogType, | |
149 | twitterCard, | |
150 | schemaType | |
151 | }) | |
152 | ||
153 | return customHtml | |
154 | } | |
155 | ||
156 | static async getWatchPlaylistHTMLPage (videoPlaylistIdArg: string, req: express.Request, res: express.Response) { | |
157 | const videoPlaylistId = toCompleteUUID(videoPlaylistIdArg) | |
158 | ||
159 | // Let Angular application handle errors | |
160 | if (!validator.isInt(videoPlaylistId) && !validator.isUUID(videoPlaylistId, 4)) { | |
161 | res.status(HttpStatusCode.NOT_FOUND_404) | |
162 | return ClientHtml.getIndexHTML(req, res) | |
163 | } | |
164 | ||
165 | const [ html, videoPlaylist ] = await Promise.all([ | |
166 | ClientHtml.getIndexHTML(req, res), | |
167 | VideoPlaylistModel.loadWithAccountAndChannel(videoPlaylistId, null) | |
168 | ]) | |
169 | ||
170 | // Let Angular application handle errors | |
171 | if (!videoPlaylist || videoPlaylist.privacy === VideoPlaylistPrivacy.PRIVATE) { | |
172 | res.status(HttpStatusCode.NOT_FOUND_404) | |
173 | return html | |
174 | } | |
175 | ||
176 | const description = getPlainTextDescriptionCached(videoPlaylist.description) | |
177 | ||
178 | let customHtml = ClientHtml.addTitleTag(html, videoPlaylist.name) | |
179 | customHtml = ClientHtml.addDescriptionTag(customHtml, description) | |
180 | ||
181 | const url = WEBSERVER.URL + videoPlaylist.getWatchStaticPath() | |
182 | const originUrl = videoPlaylist.url | |
183 | const title = videoPlaylist.name | |
184 | const siteName = CONFIG.INSTANCE.NAME | |
185 | ||
186 | const image = { | |
187 | url: videoPlaylist.getThumbnailUrl() | |
188 | } | |
189 | ||
190 | const embed = { | |
191 | url: WEBSERVER.URL + videoPlaylist.getEmbedStaticPath(), | |
192 | createdAt: videoPlaylist.createdAt.toISOString() | |
193 | } | |
194 | ||
195 | const list = { | |
196 | numberOfItems: videoPlaylist.get('videosLength') as number | |
197 | } | |
198 | ||
199 | const ogType = 'video' | |
200 | const twitterCard = CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary' | |
201 | const schemaType = 'ItemList' | |
202 | ||
203 | customHtml = ClientHtml.addTags(customHtml, { | |
204 | url, | |
205 | originUrl, | |
206 | escapedSiteName: escapeHTML(siteName), | |
207 | escapedTitle: escapeHTML(title), | |
208 | escapedDescription: escapeHTML(description), | |
209 | embed, | |
210 | image, | |
211 | list, | |
212 | ogType, | |
213 | twitterCard, | |
214 | schemaType | |
215 | }) | |
216 | ||
217 | return customHtml | |
218 | } | |
219 | ||
220 | static async getAccountHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) { | |
221 | const accountModelPromise = AccountModel.loadByNameWithHost(nameWithHost) | |
222 | return this.getAccountOrChannelHTMLPage(() => accountModelPromise, req, res) | |
223 | } | |
224 | ||
225 | static async getVideoChannelHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) { | |
226 | const videoChannelModelPromise = VideoChannelModel.loadByNameWithHostAndPopulateAccount(nameWithHost) | |
227 | return this.getAccountOrChannelHTMLPage(() => videoChannelModelPromise, req, res) | |
228 | } | |
229 | ||
230 | static async getActorHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) { | |
231 | const [ account, channel ] = await Promise.all([ | |
232 | AccountModel.loadByNameWithHost(nameWithHost), | |
233 | VideoChannelModel.loadByNameWithHostAndPopulateAccount(nameWithHost) | |
234 | ]) | |
235 | ||
236 | return this.getAccountOrChannelHTMLPage(() => Promise.resolve(account || channel), req, res) | |
237 | } | |
238 | ||
239 | static async getEmbedHTML () { | |
240 | const path = ClientHtml.getEmbedPath() | |
241 | ||
242 | if (!isTestInstance() && ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path] | |
243 | ||
244 | const buffer = await readFile(path) | |
245 | const serverConfig = await ServerConfigManager.Instance.getHTMLServerConfig() | |
246 | ||
247 | let html = buffer.toString() | |
248 | html = await ClientHtml.addAsyncPluginCSS(html) | |
249 | html = ClientHtml.addCustomCSS(html) | |
250 | html = ClientHtml.addTitleTag(html) | |
251 | html = ClientHtml.addDescriptionTag(html) | |
252 | html = ClientHtml.addServerConfig(html, serverConfig) | |
253 | ||
254 | ClientHtml.htmlCache[path] = html | |
255 | ||
256 | return html | |
257 | } | |
258 | ||
259 | private static async getAccountOrChannelHTMLPage ( | |
260 | loader: () => Promise<MAccountActor | MChannelActor>, | |
261 | req: express.Request, | |
262 | res: express.Response | |
263 | ) { | |
264 | const [ html, entity ] = await Promise.all([ | |
265 | ClientHtml.getIndexHTML(req, res), | |
266 | loader() | |
267 | ]) | |
268 | ||
269 | // Let Angular application handle errors | |
270 | if (!entity) { | |
271 | res.status(HttpStatusCode.NOT_FOUND_404) | |
272 | return ClientHtml.getIndexHTML(req, res) | |
273 | } | |
274 | ||
275 | const description = getPlainTextDescriptionCached(entity.description) | |
276 | ||
277 | let customHtml = ClientHtml.addTitleTag(html, entity.getDisplayName()) | |
278 | customHtml = ClientHtml.addDescriptionTag(customHtml, description) | |
279 | ||
280 | const url = entity.getLocalUrl() | |
281 | const originUrl = entity.Actor.url | |
282 | const siteName = CONFIG.INSTANCE.NAME | |
283 | const title = entity.getDisplayName() | |
284 | ||
285 | const avatar = getBiggestActorImage(entity.Actor.Avatars) | |
286 | const image = { | |
287 | url: ActorImageModel.getImageUrl(avatar), | |
288 | width: avatar?.width, | |
289 | height: avatar?.height | |
290 | } | |
291 | ||
292 | const ogType = 'website' | |
293 | const twitterCard = 'summary' | |
294 | const schemaType = 'ProfilePage' | |
295 | ||
296 | customHtml = ClientHtml.addTags(customHtml, { | |
297 | url, | |
298 | originUrl, | |
299 | escapedTitle: escapeHTML(title), | |
300 | escapedSiteName: escapeHTML(siteName), | |
301 | escapedDescription: escapeHTML(description), | |
302 | image, | |
303 | ogType, | |
304 | twitterCard, | |
305 | schemaType, | |
306 | disallowIndexation: !entity.Actor.isOwned() | |
307 | }) | |
308 | ||
309 | return customHtml | |
310 | } | |
311 | ||
312 | private static async getIndexHTML (req: express.Request, res: express.Response, paramLang?: string) { | |
313 | const path = ClientHtml.getIndexPath(req, res, paramLang) | |
314 | if (!isTestInstance() && ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path] | |
315 | ||
316 | const buffer = await readFile(path) | |
317 | const serverConfig = await ServerConfigManager.Instance.getHTMLServerConfig() | |
318 | ||
319 | let html = buffer.toString() | |
320 | ||
321 | html = ClientHtml.addManifestContentHash(html) | |
322 | html = ClientHtml.addFaviconContentHash(html) | |
323 | html = ClientHtml.addLogoContentHash(html) | |
324 | html = ClientHtml.addCustomCSS(html) | |
325 | html = ClientHtml.addServerConfig(html, serverConfig) | |
326 | html = await ClientHtml.addAsyncPluginCSS(html) | |
327 | ||
328 | ClientHtml.htmlCache[path] = html | |
329 | ||
330 | return html | |
331 | } | |
332 | ||
333 | private static getIndexPath (req: express.Request, res: express.Response, paramLang: string) { | |
334 | let lang: string | |
335 | ||
336 | // Check param lang validity | |
337 | if (paramLang && is18nLocale(paramLang)) { | |
338 | lang = paramLang | |
339 | ||
340 | // Save locale in cookies | |
341 | res.cookie('clientLanguage', lang, { | |
342 | secure: WEBSERVER.SCHEME === 'https', | |
343 | sameSite: 'none', | |
344 | maxAge: 1000 * 3600 * 24 * 90 // 3 months | |
345 | }) | |
346 | ||
347 | } else if (req.cookies.clientLanguage && is18nLocale(req.cookies.clientLanguage)) { | |
348 | lang = req.cookies.clientLanguage | |
349 | } else { | |
350 | lang = req.acceptsLanguages(POSSIBLE_LOCALES) || getDefaultLocale() | |
351 | } | |
352 | ||
353 | logger.debug( | |
354 | 'Serving %s HTML language', buildFileLocale(lang), | |
355 | { cookie: req.cookies?.clientLanguage, paramLang, acceptLanguage: req.headers['accept-language'] } | |
356 | ) | |
357 | ||
358 | return join(root(), 'client', 'dist', buildFileLocale(lang), 'index.html') | |
359 | } | |
360 | ||
361 | private static getEmbedPath () { | |
362 | return join(root(), 'client', 'dist', 'standalone', 'videos', 'embed.html') | |
363 | } | |
364 | ||
365 | private static addManifestContentHash (htmlStringPage: string) { | |
366 | return htmlStringPage.replace('[manifestContentHash]', FILES_CONTENT_HASH.MANIFEST) | |
367 | } | |
368 | ||
369 | private static addFaviconContentHash (htmlStringPage: string) { | |
370 | return htmlStringPage.replace('[faviconContentHash]', FILES_CONTENT_HASH.FAVICON) | |
371 | } | |
372 | ||
373 | private static addLogoContentHash (htmlStringPage: string) { | |
374 | return htmlStringPage.replace('[logoContentHash]', FILES_CONTENT_HASH.LOGO) | |
375 | } | |
376 | ||
377 | private static addTitleTag (htmlStringPage: string, title?: string) { | |
378 | let text = title || CONFIG.INSTANCE.NAME | |
379 | if (title) text += ` - ${CONFIG.INSTANCE.NAME}` | |
380 | ||
381 | const titleTag = `<title>${escapeHTML(text)}</title>` | |
382 | ||
383 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.TITLE, titleTag) | |
384 | } | |
385 | ||
386 | private static addDescriptionTag (htmlStringPage: string, description?: string) { | |
387 | const content = description || CONFIG.INSTANCE.SHORT_DESCRIPTION | |
388 | const descriptionTag = `<meta name="description" content="${escapeHTML(content)}" />` | |
389 | ||
390 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.DESCRIPTION, descriptionTag) | |
391 | } | |
392 | ||
393 | private static addCustomCSS (htmlStringPage: string) { | |
394 | const styleTag = `<style class="custom-css-style">${CONFIG.INSTANCE.CUSTOMIZATIONS.CSS}</style>` | |
395 | ||
396 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.CUSTOM_CSS, styleTag) | |
397 | } | |
398 | ||
399 | private static addServerConfig (htmlStringPage: string, serverConfig: HTMLServerConfig) { | |
400 | // Stringify the JSON object, and then stringify the string object so we can inject it into the HTML | |
401 | const serverConfigString = JSON.stringify(JSON.stringify(serverConfig)) | |
402 | const configScriptTag = `<script type="application/javascript">window.PeerTubeServerConfig = ${serverConfigString}</script>` | |
403 | ||
404 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.SERVER_CONFIG, configScriptTag) | |
405 | } | |
406 | ||
407 | private static async addAsyncPluginCSS (htmlStringPage: string) { | |
408 | const globalCSSContent = await readFile(PLUGIN_GLOBAL_CSS_PATH) | |
409 | if (globalCSSContent.byteLength === 0) return htmlStringPage | |
410 | ||
411 | const fileHash = sha256(globalCSSContent) | |
412 | const linkTag = `<link rel="stylesheet" href="/plugins/global.css?hash=${fileHash}" />` | |
413 | ||
414 | return htmlStringPage.replace('</head>', linkTag + '</head>') | |
415 | } | |
416 | ||
417 | private static generateOpenGraphMetaTags (tags: Tags) { | |
418 | const metaTags = { | |
419 | 'og:type': tags.ogType, | |
420 | 'og:site_name': tags.escapedSiteName, | |
421 | 'og:title': tags.escapedTitle, | |
422 | 'og:image': tags.image.url | |
423 | } | |
424 | ||
425 | if (tags.image.width && tags.image.height) { | |
426 | metaTags['og:image:width'] = tags.image.width | |
427 | metaTags['og:image:height'] = tags.image.height | |
428 | } | |
429 | ||
430 | metaTags['og:url'] = tags.url | |
431 | metaTags['og:description'] = tags.escapedDescription | |
432 | ||
433 | if (tags.embed) { | |
434 | metaTags['og:video:url'] = tags.embed.url | |
435 | metaTags['og:video:secure_url'] = tags.embed.url | |
436 | metaTags['og:video:type'] = 'text/html' | |
437 | metaTags['og:video:width'] = EMBED_SIZE.width | |
438 | metaTags['og:video:height'] = EMBED_SIZE.height | |
439 | } | |
440 | ||
441 | return metaTags | |
442 | } | |
443 | ||
444 | private static generateStandardMetaTags (tags: Tags) { | |
445 | return { | |
446 | name: tags.escapedTitle, | |
447 | description: tags.escapedDescription, | |
448 | image: tags.image.url | |
449 | } | |
450 | } | |
451 | ||
452 | private static generateTwitterCardMetaTags (tags: Tags) { | |
453 | const metaTags = { | |
454 | 'twitter:card': tags.twitterCard, | |
455 | 'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME, | |
456 | 'twitter:title': tags.escapedTitle, | |
457 | 'twitter:description': tags.escapedDescription, | |
458 | 'twitter:image': tags.image.url | |
459 | } | |
460 | ||
461 | if (tags.image.width && tags.image.height) { | |
462 | metaTags['twitter:image:width'] = tags.image.width | |
463 | metaTags['twitter:image:height'] = tags.image.height | |
464 | } | |
465 | ||
466 | if (tags.twitterCard === 'player') { | |
467 | metaTags['twitter:player'] = tags.embed.url | |
468 | metaTags['twitter:player:width'] = EMBED_SIZE.width | |
469 | metaTags['twitter:player:height'] = EMBED_SIZE.height | |
470 | } | |
471 | ||
472 | return metaTags | |
473 | } | |
474 | ||
475 | private static generateSchemaTags (tags: Tags) { | |
476 | const schema = { | |
477 | '@context': 'http://schema.org', | |
478 | '@type': tags.schemaType, | |
479 | 'name': tags.escapedTitle, | |
480 | 'description': tags.escapedDescription, | |
481 | 'image': tags.image.url, | |
482 | 'url': tags.url | |
483 | } | |
484 | ||
485 | if (tags.list) { | |
486 | schema['numberOfItems'] = tags.list.numberOfItems | |
487 | schema['thumbnailUrl'] = tags.image.url | |
488 | } | |
489 | ||
490 | if (tags.embed) { | |
491 | schema['embedUrl'] = tags.embed.url | |
492 | schema['uploadDate'] = tags.embed.createdAt | |
493 | ||
494 | if (tags.embed.duration) schema['duration'] = tags.embed.duration | |
495 | if (tags.embed.views) schema['iterationCount'] = tags.embed.views | |
496 | ||
497 | schema['thumbnailUrl'] = tags.image.url | |
498 | schema['contentUrl'] = tags.url | |
499 | } | |
500 | ||
501 | return schema | |
502 | } | |
503 | ||
504 | private static addTags (htmlStringPage: string, tagsValues: Tags) { | |
505 | const openGraphMetaTags = this.generateOpenGraphMetaTags(tagsValues) | |
506 | const standardMetaTags = this.generateStandardMetaTags(tagsValues) | |
507 | const twitterCardMetaTags = this.generateTwitterCardMetaTags(tagsValues) | |
508 | const schemaTags = this.generateSchemaTags(tagsValues) | |
509 | ||
510 | const { url, escapedTitle, embed, originUrl, disallowIndexation } = tagsValues | |
511 | ||
512 | const oembedLinkTags: { type: string, href: string, escapedTitle: string }[] = [] | |
513 | ||
514 | if (embed) { | |
515 | oembedLinkTags.push({ | |
516 | type: 'application/json+oembed', | |
517 | href: WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(url), | |
518 | escapedTitle | |
519 | }) | |
520 | } | |
521 | ||
522 | let tagsStr = '' | |
523 | ||
524 | // Opengraph | |
525 | Object.keys(openGraphMetaTags).forEach(tagName => { | |
526 | const tagValue = openGraphMetaTags[tagName] | |
527 | ||
528 | tagsStr += `<meta property="${tagName}" content="${tagValue}" />` | |
529 | }) | |
530 | ||
531 | // Standard | |
532 | Object.keys(standardMetaTags).forEach(tagName => { | |
533 | const tagValue = standardMetaTags[tagName] | |
534 | ||
535 | tagsStr += `<meta property="${tagName}" content="${tagValue}" />` | |
536 | }) | |
537 | ||
538 | // Twitter card | |
539 | Object.keys(twitterCardMetaTags).forEach(tagName => { | |
540 | const tagValue = twitterCardMetaTags[tagName] | |
541 | ||
542 | tagsStr += `<meta property="${tagName}" content="${tagValue}" />` | |
543 | }) | |
544 | ||
545 | // OEmbed | |
546 | for (const oembedLinkTag of oembedLinkTags) { | |
547 | tagsStr += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.escapedTitle}" />` | |
548 | } | |
549 | ||
550 | // Schema.org | |
551 | if (schemaTags) { | |
552 | tagsStr += `<script type="application/ld+json">${JSON.stringify(schemaTags)}</script>` | |
553 | } | |
554 | ||
555 | // SEO, use origin URL | |
556 | tagsStr += `<link rel="canonical" href="${originUrl}" />` | |
557 | ||
558 | if (disallowIndexation) { | |
559 | tagsStr += `<meta name="robots" content="noindex" />` | |
560 | } | |
561 | ||
562 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.META_TAGS, tagsStr) | |
563 | } | |
564 | } | |
565 | ||
566 | function sendHTML (html: string, res: express.Response, localizedHTML: boolean = false) { | |
567 | res.set('Content-Type', 'text/html; charset=UTF-8') | |
568 | ||
569 | if (localizedHTML) { | |
570 | res.set('Vary', 'Accept-Language') | |
571 | } | |
572 | ||
573 | return res.send(html) | |
574 | } | |
575 | ||
576 | async function serveIndexHTML (req: express.Request, res: express.Response) { | |
577 | if (req.accepts(ACCEPT_HEADERS) === 'html' || !req.headers.accept) { | |
578 | try { | |
579 | await generateHTMLPage(req, res, req.params.language) | |
580 | return | |
581 | } catch (err) { | |
582 | logger.error('Cannot generate HTML page.', err) | |
583 | return res.status(HttpStatusCode.INTERNAL_SERVER_ERROR_500).end() | |
584 | } | |
585 | } | |
586 | ||
587 | return res.status(HttpStatusCode.NOT_ACCEPTABLE_406).end() | |
588 | } | |
589 | ||
590 | // --------------------------------------------------------------------------- | |
591 | ||
592 | export { | |
593 | ClientHtml, | |
594 | sendHTML, | |
595 | serveIndexHTML | |
596 | } | |
597 | ||
598 | async function generateHTMLPage (req: express.Request, res: express.Response, paramLang?: string) { | |
599 | const html = await ClientHtml.getDefaultHTMLPage(req, res, paramLang) | |
600 | ||
601 | return sendHTML(html, res, true) | |
602 | } |