add oEmbed Support for video claims (#376)

* Refactor html.js

* Fix Favicon

* Refactor rss.js

* Create oEmbed.js

config.js

@@ -34,7 +34,6 @@ const config = {
   TWITTER_ACCOUNT: process.env.TWITTER_ACCOUNT,
   // LOGO
   LOGO_TITLE: process.env.LOGO_TITLE,
-  FAVICON: process.env.FAVICON,
   LOGO: process.env.LOGO,
   LOGO_TEXT_LIGHT: process.env.LOGO_TEXT_LIGHT,
   LOGO_TEXT_DARK: process.env.LOGO_TEXT_DARK,
@@ -92,5 +91,6 @@ const config = {
 
 config.URL_DEV = `http://localhost:${config.WEBPACK_WEB_PORT}`;
 config.URL_LOCAL = `http://localhost:${config.WEB_SERVER_PORT}`;
+config.FAVICON = `/public/favicon-spaceman.png`;
 
 module.exports = config;

web/src/html.js

@@ -1,39 +1,42 @@
 const {
-  URL,
-  // DOMAIN,
-  SITE_TITLE,
-  SITE_CANONICAL_URL,
-  OG_HOMEPAGE_TITLE,
-  OG_TITLE_SUFFIX,
-  OG_IMAGE_URL,
-  SITE_DESCRIPTION,
-  SITE_NAME,
   FAVICON,
   LBRY_WEB_API,
+  OG_HOMEPAGE_TITLE,
+  OG_IMAGE_URL,
+  OG_TITLE_SUFFIX,
+  SITE_CANONICAL_URL,
+  SITE_DESCRIPTION,
+  SITE_NAME,
+  SITE_TITLE,
   THUMBNAIL_CARDS_CDN_URL,
+  URL,
 } = require('../../config.js');
 
-const { lbryProxy: Lbry } = require('../lbry');
-const { generateEmbedUrl, generateStreamUrl, generateDirectUrl } = require('../../ui/util/web');
-const PAGES = require('../../ui/constants/pages');
 const { CATEGORY_METADATA } = require('./category-metadata');
-const { parseURI, normalizeURI } = require('./lbryURI');
-const fs = require('fs');
-const path = require('path');
-const moment = require('moment');
-const removeMd = require('remove-markdown');
+const { generateEmbedUrl, generateStreamUrl, generateDirectUrl } = require('../../ui/util/web');
 const { getJsBundleId } = require('../bundle-id.js');
+const { lbryProxy: Lbry } = require('../lbry');
+const { parseURI, normalizeClaimUrl } = require('./lbryURI');
+const fs = require('fs');
+const moment = require('moment');
+const PAGES = require('../../ui/constants/pages');
+const path = require('path');
+const removeMd = require('remove-markdown');
+
 const jsBundleId = getJsBundleId();
 const SDK_API_PATH = `${LBRY_WEB_API}/api/v1`;
 const PROXY_URL = `${SDK_API_PATH}/proxy`;
 Lbry.setDaemonConnectionString(PROXY_URL);
 
-function getThumbnailCdnUrl(url) {
-  if (!THUMBNAIL_CARDS_CDN_URL || !url) {
-    return url;
-  }
+const BEGIN_STR = '<!-- VARIABLE_HEAD_BEGIN -->';
+const FINAL_STR = '<!-- VARIABLE_HEAD_END -->';
 
-  if (url && (url.includes('https://twitter-card') || url.includes('https://cards.odysee.com'))) {
+function getThumbnailCdnUrl(url) {
+  if (
+    !THUMBNAIL_CARDS_CDN_URL ||
+    !url ||
+    (url && (url.includes('https://twitter-card') || url.includes('https://cards.odysee.com')))
+  ) {
     return url;
   }
 
@@ -44,16 +47,13 @@ function getThumbnailCdnUrl(url) {
 }
 
 function insertToHead(fullHtml, htmlToInsert) {
-  const beginStr = '<!-- VARIABLE_HEAD_BEGIN -->';
-  const finalStr = '<!-- VARIABLE_HEAD_END -->';
-
-  const beginIndex = fullHtml.indexOf(beginStr);
-  const finalIndex = fullHtml.indexOf(finalStr);
+  const beginIndex = fullHtml.indexOf(BEGIN_STR);
+  const finalIndex = fullHtml.indexOf(FINAL_STR);
 
   if (beginIndex > -1 && finalIndex > -1 && finalIndex > beginIndex) {
     return `${fullHtml.slice(0, beginIndex)}${
       htmlToInsert || buildOgMetadata()
-    }<script src="/public/ui-${jsBundleId}.js" async></script>${fullHtml.slice(finalIndex + finalStr.length)}`;
+    }<script src="/public/ui-${jsBundleId}.js" async></script>${fullHtml.slice(finalIndex + FINAL_STR.length)}`;
   }
 }
 
@@ -66,10 +66,6 @@ function truncateDescription(description, maxChars = 200) {
   return chars.length > maxChars ? truncated + '...' : truncated;
 }
 
-function normalizeClaimUrl(url) {
-  return normalizeURI(url.replace(/:/g, '#'));
-}
-
 function escapeHtmlProperty(property) {
   return property
     ? String(property)
@@ -92,6 +88,7 @@ function getCategoryMeta(path) {
 function buildOgMetadata(overrideOptions = {}) {
   const { title, description, image, path } = overrideOptions;
   const cleanDescription = removeMd(description || SITE_DESCRIPTION);
+
   const head =
     `<title>${SITE_TITLE}</title>\n` +
     `<meta name="description" content="${cleanDescription}" />\n` +
@@ -138,13 +135,12 @@ function addFavicon() {
 }
 
 function buildHead() {
-  const head =
-    '<!-- VARIABLE_HEAD_BEGIN -->' + addFavicon() + addPWA() + buildOgMetadata() + '<!-- VARIABLE_HEAD_END -->';
+  const head = BEGIN_STR + addFavicon() + addPWA() + buildOgMetadata() + FINAL_STR;
   return head;
 }
 
 function buildBasicOgMetadata() {
-  const head = '<!-- VARIABLE_HEAD_BEGIN -->' + addFavicon() + buildOgMetadata() + '<!-- VARIABLE_HEAD_END -->';
+  const head = BEGIN_STR + addFavicon() + buildOgMetadata() + FINAL_STR;
   return head;
 }
 
@@ -187,7 +183,7 @@ function buildClaimOgMetadata(uri, claim, overrideOptions = {}) {
     getThumbnailCdnUrl(OG_IMAGE_URL) ||
     `${URL}/public/v2-og.png`;
 
-  // Allow for ovverriding default claim based og metadata
+  // Allow for overriding default claim based og metadata
   const title = overrideOptions.title || claimTitle;
   const description = overrideOptions.description || claimDescription;
   const cleanDescription = removeMd(description);
@@ -218,6 +214,12 @@ function buildClaimOgMetadata(uri, claim, overrideOptions = {}) {
   head += `<meta name="twitter:url" content="${URL}/${claim.name}:${claim.claim_id}"/>`;
   head += `<meta property="fb:app_id" content="1673146449633983" />`;
   head += `<link rel="canonical" content="${SITE_CANONICAL_URL || URL}/${claim.name}:${claim.claim_id}"/>`;
+  head += `<link rel="alternate" type="application/json+oembed" href="${URL}/$/oembed?url=${encodeURIComponent(
+    `${URL}/${claim.canonical_url}`
+  )}&format=json" title="${title}" />`;
+  head += `<link rel="alternate" type="text/xml+oembed" href="${URL}/$/oembed?url=${encodeURIComponent(
+    `${URL}/${claim.canonical_url}`
+  )}&format=xml" title="${title}" />`;
 
   if (mediaType && (mediaType.startsWith('video/') || mediaType.startsWith('audio/'))) {
     const videoUrl = generateEmbedUrl(claim.name, claim.claim_id);

web/src/lbryURI.js

@@ -330,10 +330,15 @@ function isURIEqual(uriA, uriB) {
   }
 }
 
+function normalizeClaimUrl(url) {
+  return normalizeURI(url.replace(/:/g, '#'));
+}
+
 module.exports = {
   parseURI,
   buildURI,
   normalizeURI,
+  normalizeClaimUrl,
   isURIValid,
   isURIEqual,
   isNameValid,

web/src/oEmbed.js

@@ -0,0 +1,130 @@
+const {
+  URL,
+  SITE_NAME,
+  LBRY_WEB_API,
+  THUMBNAIL_CARDS_CDN_URL,
+  THUMBNAIL_HEIGHT,
+  THUMBNAIL_WIDTH,
+} = require('../../config.js');
+
+const { generateEmbedUrl } = require('../../ui/util/web');
+const { lbryProxy: Lbry } = require('../lbry');
+const { normalizeURI } = require('./lbryURI');
+
+const SDK_API_PATH = `${LBRY_WEB_API}/api/v1`;
+const proxyURL = `${SDK_API_PATH}/proxy`;
+Lbry.setDaemonConnectionString(proxyURL);
+
+// ****************************************************************************
+// Fetch claim info
+// ****************************************************************************
+
+function getThumbnailCdnUrl(url) {
+  if (
+    !THUMBNAIL_CARDS_CDN_URL ||
+    !url ||
+    (url && (url.includes('https://twitter-card') || url.includes('https://cards.odysee.com')))
+  ) {
+    return url;
+  }
+
+  if (url) {
+    const encodedURL = Buffer.from(url).toString('base64');
+    return `${THUMBNAIL_CARDS_CDN_URL}${encodedURL}.jpg`;
+  }
+}
+
+async function getClaim(requestUrl) {
+  const path = requestUrl.replace(URL, '').substring(1);
+
+  let uri;
+  let claim;
+  let error;
+
+  try {
+    uri = normalizeURI(path);
+
+    const response = await Lbry.resolve({ urls: [uri] });
+    if (response && response[uri] && !response[uri].error) {
+      claim = response[uri];
+    }
+  } catch {}
+
+  if (!claim) {
+    error = 'The URL is invalid or is not associated with any claim.';
+  } else {
+    const { value_type, value } = claim;
+
+    if (value_type !== 'stream' || value.stream_type !== 'video') {
+      error = 'The URL is not associated with a video claim.';
+    }
+  }
+
+  return { claim, error };
+}
+
+// ****************************************************************************
+// Generate
+// ****************************************************************************
+
+function generateOEmbedData(claim) {
+  const { value, signing_channel: authorClaim } = claim;
+
+  const claimTitle = value.title;
+  const authorName = authorClaim ? authorClaim.value.title || authorClaim.name : 'Anonymous';
+  const authorUrlPath = authorClaim && authorClaim.canonical_url.replace('lbry://', '');
+  const authorUrl = authorClaim ? `${URL}/${authorUrlPath}` : null;
+  const thumbnailUrl = value && value.thumbnail && value.thumbnail.url && getThumbnailCdnUrl(value.thumbnail.url);
+  const videoUrl = generateEmbedUrl(claim.name, claim.claim_id);
+  const videoWidth = value.video && value.video.width;
+  const videoHeight = value.video && value.video.height;
+
+  return {
+    type: 'video',
+    version: '1.0',
+    title: claimTitle,
+    author_name: authorName,
+    author_url: authorUrl,
+    provider_name: SITE_NAME,
+    provider_url: URL,
+    thumbnail_url: thumbnailUrl,
+    thumbnail_width: THUMBNAIL_WIDTH,
+    thumbnail_height: THUMBNAIL_HEIGHT,
+    html: `<iframe id="lbry-iframe" width="560" height="315" src="${videoUrl}" allowfullscreen></iframe>`,
+    width: videoWidth,
+    height: videoHeight,
+  };
+}
+
+async function getOEmbed(ctx) {
+  const path = ctx.request.url;
+  const urlQuery = '?url=';
+  const formatQuery = '&format=';
+
+  const requestUrl = decodeURIComponent(
+    path.substring(
+      path.indexOf(urlQuery) + urlQuery.length,
+      path.indexOf('&') > path.indexOf(urlQuery) ? path.indexOf('&') : path.length
+    )
+  );
+  const requestFormat = path.substring(
+    path.indexOf(formatQuery) + formatQuery.length,
+    path.indexOf('&') > path.indexOf(formatQuery) ? path.indexOf('&') : path.length
+  );
+
+  const isXml = requestFormat === 'xml';
+
+  const { claim, error } = await getClaim(requestUrl);
+  if (error) return error;
+
+  const oEmbedData = generateOEmbedData(claim);
+
+  if (isXml) {
+    ctx.set('Content-Type', 'text/xml+oembed');
+    return oEmbedData.xml();
+  }
+  ctx.set('Content-Type', 'application/json+oembed');
+  return oEmbedData;
+}
+
+module.exports = { getOEmbed };

web/src/routes.js

@@ -1,11 +1,13 @@
+const { CUSTOM_HOMEPAGE } = require('../../config.js');
+const { generateStreamUrl } = require('../../ui/util/web');
+const { getHomepageJSON } = require('./getHomepageJSON');
 const { getHtml } = require('./html');
+const { getOEmbed } = require('./oEmbed');
 const { getRss } = require('./rss');
 const { getTempFile } = require('./tempfile');
-const { getHomepageJSON } = require('./getHomepageJSON');
-const { generateStreamUrl } = require('../../ui/util/web');
+
 const fetch = require('node-fetch');
 const Router = require('@koa/router');
-const { CUSTOM_HOMEPAGE } = require('../../config.js');
 
 // So any code from 'lbry-redux'/'lbryinc' that uses `fetch` can be run on the server
 global.fetch = fetch;
@@ -27,6 +29,11 @@ const rssMiddleware = async (ctx) => {
   ctx.body = rss;
 };
 
+const oEmbedMiddleware = async (ctx) => {
+  const oEmbed = await getOEmbed(ctx);
+  ctx.body = oEmbed;
+};
+
 const tempfileMiddleware = async (ctx) => {
   const temp = await getTempFile(ctx);
   ctx.body = temp;
@@ -76,6 +83,8 @@ router.get('/.well-known/:filename', tempfileMiddleware);
 router.get(`/$/rss/:claimName/:claimId`, rssMiddleware);
 router.get(`/$/rss/:claimName::claimId`, rssMiddleware);
 
+router.get(`/$/oembed`, oEmbedMiddleware);
+
 router.get('*', async (ctx) => {
   const html = await getHtml(ctx);
   ctx.body = html;

web/src/rss.js

@@ -1,8 +1,8 @@
 const { generateStreamUrl } = require('../../ui/util/web');
-const { URL, SITE_NAME, LBRY_WEB_API } = require('../../config.js');
 const { lbryProxy: Lbry } = require('../lbry');
-const Rss = require('rss');
+const { URL, SITE_NAME, LBRY_WEB_API } = require('../../config.js');
 const Mime = require('mime-types');
+const Rss = require('rss');
 
 const SDK_API_PATH = `${LBRY_WEB_API}/api/v1`;
 const proxyURL = `${SDK_API_PATH}/proxy`;
@@ -105,10 +105,11 @@ const generateEnclosureForClaimContent = (claim) => {
 };
 
 const getLanguageValue = (claim) => {
-  if (claim && claim.value && claim.value.languages && claim.value.languages.length > 0) {
-    return claim.value.languages[0];
-  }
-  return 'en';
+  const {
+    value: { languages },
+  } = claim;
+
+  return languages && languages.length > 0 ? languages[0] : 'en';
 };
 
 const replaceLineFeeds = (str) => str.replace(/(?:\r\n|\r|\n)/g, '<br />');
@@ -127,12 +128,11 @@ const isEmailRoughlyValid = (email) => /^\S+@\S+$/.test(email);
  */
 const generateItunesOwnerElement = (claim) => {
   let email = 'no-reply@odysee.com';
-  let name = claim && (claim.value && claim.value.title ? claim.value.title : claim.name);
+  const { value } = claim;
+  const name = (value && value.title) || claim.name;
 
-  if (claim && claim.value) {
-    if (isEmailRoughlyValid(claim.value.email)) {
-      email = claim.value.email;
-    }
+  if (isEmailRoughlyValid(value.email)) {
+    email = value.email;
   }
 
   return {
@@ -211,9 +211,7 @@ const generateItunesImageElement = (claim) => {
   }
 };
 
-const getFormattedDescription = (claim) => {
-  return replaceLineFeeds((claim && claim.value && claim.value.description) || '');
-};
+const getFormattedDescription = (claim) => replaceLineFeeds(claim.value.description || '');
 
 // ****************************************************************************
 // Generate