vnext: Telegram bot (WIP)

1 files changed, 106 insertions, 100 deletions

diff --git a/vnext/src/utils/embed.js b/vnext/src/utils/embed.js
index 0c6fbd9c..7db46866 100644
--- a/vnext/src/utils/embed.js
+++ b/vnext/src/utils/embed.js
@@ -28,15 +28,15 @@ function formatText(txt, rules) {
   function nextId() { return idCounter++; }
   function ft(txt, rules) {
     let matches = rules.map(r => { r.re.lastIndex = 0; return [r, r.re.exec(txt)]; })
-                       .filter(([,m]) => m !== null)
-                       .sort(([r1,m1],[r2,m2]) => (r1.pr - r2.pr) || (m1.index - m2.index));
+      .filter(([, m]) => m !== null)
+      .sort(([r1, m1], [r2, m2]) => (r1.pr - r2.pr) || (m1.index - m2.index));
     if (matches && matches.length > 0) {
       let [rule, match] = matches[0];
       let subsequentRules = rules.filter(r => r.pr >= rule.pr);
       let idStr = `<>(${nextId()})<>`;
       let outerStr = txt.substring(0, match.index) + idStr + txt.substring(rule.re.lastIndex);
       let innerStr = (rule.brackets)
-        ? (() => { let [l ,r ,f] = rule.with; return l + ft((f ? f(match[1]) : match[1]), subsequentRules) + r; })()
+        ? (() => { let [l, r, f] = rule.with; return l + ft((f ? f(match[1]) : match[1]), subsequentRules) + r; })()
         : match[0].replace(rule.re, rule.with);
       return ft(outerStr, subsequentRules).replace(idStr, innerStr);
     }
@@ -59,7 +59,7 @@ function makeNewNode(embedType, aNode, reResult) {
   return embedType.makeNode(aNode, reResult, withClasses(document.createElement('div')));
 }
 
-function makeIframe(src, w, h, scrolling='no') {
+function makeIframe(src, w, h, scrolling = 'no') {
   let iframe = document.createElement('iframe');
   iframe.style.width = w;
   iframe.style.height = h;
@@ -120,13 +120,13 @@ function messageReplyReplace(messageId) {
  * Given "txt" message in unescaped plaintext with Juick markup, this function
  * returns escaped formatted HTML string.
  *
- * @param {string} txt
- * @param {string} messageId - current message id
- * @param {boolean} isCode
+ * @param {string} txt text message
+ * @param {string} messageId current message id
+ * @param {boolean} isCode set when message contains *code tag
  * @returns {string} formatted message
  */
 function juickFormat(txt, messageId, isCode) {
-  const urlRe = /(?:\[([^\][]+)\](?:\[([^\]]+)\]|\(((?:[a-z]+:\/\/|www\.|ftp\.)(?:\([-\w+*&@#/%=~|$?!:;,.]*\)|[-\w+*&@#/%=~|$?!:;,.])*(?:\([-\w+*&@#/%=~|$?!:;,.]*\)|[\w+*&@#/%=~|$]))\))|\b(?:[a-z]+:\/\/|www\.|ftp\.)(?:\([-\w+*&@#/%=~|$?!:;,.]*\)|[-\w+*&@#/%=~|$?!:;,.])*(?:\([-\w+*&@#/%=~|$?!:;,.]*\)|[\w+*&@#/%=~|$]))/gi;
+  const urlRe = /(?:\[([^\]\[]+)\](?:\[([^\]]+)\]|\(((?:[a-z]+:\/\/|www\.|ftp\.)(?:\([-\S+*&@#/%=~|$?!:;,.]*\)|[-\S+*&@#/%=~|$?!:;,.])*(?:\([-\S+*&@#/%=~|$?!:;,.]*\)|[\S+*&@#/%=~|$]))\))|\b(?:[a-z]+:\/\/|www\.|ftp\.)(?:\([-\S+*&@#/%=~|$?!:;,.]*\)|[-\S+*&@#/%=~|$?!:;,.])*(?:\([-\S+*&@#/%=~|$?!:;,.]*\)|[\S+*&@#/%=~|$]))/gi;
   const bqReplace = m => m.replace(/^(?:>|&gt;)\s?/gmi, '');
   return (isCode)
     ? formatText(txt, [
@@ -139,23 +139,50 @@ function juickFormat(txt, messageId, isCode) {
       { pr: 1, re: urlRe, with: urlReplace },
       { pr: 1, re: /\B(?:#(\d+))?(?:\/(\d+))?\b/g, with: messageReplyReplace(messageId) },
       { pr: 1, re: /\B@([\w-]+)\b/gi, with: '<a href="/$1">@$1</a>' },
-      { pr: 2, re: /\B\*([^\n]+?)\*((?=\s)|(?=$)|(?=[!"#$%&'*+,\-./:;<=>?@[\]^_`{|}~()]+))/g, brackets: true, with: ['<b>', '</b>'] },
-      { pr: 2, re: /\B\/([^\n]+?)\/((?=\s)|(?=$)|(?=[!"#$%&'*+,\-./:;<=>?@[\]^_`{|}~()]+))/g, brackets: true, with: ['<i>', '</i>'] },
-      { pr: 2, re: /\b_([^\n]+?)_((?=\s)|(?=$)|(?=[!"#$%&'*+,\-./:;<=>?@[\]^_`{|}~()]+))/g, brackets: true, with: ['<span class="u">', '</span>'] },
+      { pr: 2, re: /\B\*([^\n]+?)\*((?=\s)|(?=$)|(?=[!\"#$%&'*+,\-./:;<=>?@[\]^_`{|}~()]+))/g, brackets: true, with: ['<b>', '</b>'] },
+      { pr: 2, re: /\B\/([^\n]+?)\/((?=\s)|(?=$)|(?=[!\"#$%&'*+,\-./:;<=>?@[\]^_`{|}~()]+))/g, brackets: true, with: ['<i>', '</i>'] },
+      { pr: 2, re: /\b\_([^\n]+?)\_((?=\s)|(?=$)|(?=[!\"#$%&'*+,\-./:;<=>?@[\]^_`{|}~()]+))/g, brackets: true, with: ['<u>', '</u>'] },
       { pr: 3, re: /\n/g, with: '<br/>' },
     ]);
 }
+/**
+ * @external RegExpExecArray
+ */
+
+/**
+ * @callback MakeNodeCallback
+ * @param { HTMLAnchorElement } aNode a DOM node of the link
+ * @param { RegExpExecArray } reResult Result of RegExp execution
+ * @param { HTMLDivElement} div target DOM element which can be updated by callback function
+ * @returns { HTMLDivElement } updated DOM element
+ */
+
+/**
+ * @typedef { object } LinkFormatData
+ * @property { string } id Format identifier
+ * @property { string } name Format description
+ * @property { RegExp } re Regular expression to match expected hyperlinks
+ * @property { string } className list of CSS classes which
+ *   will be added to the target DOM element
+ * @property { MakeNodeCallback } makeNode callback function called when a target link is matched
+ */
 
+/**
+ * Get supported embeddable formats
+ *
+ * @returns {LinkFormatData[]} list of supported formats
+ */
 function getEmbeddableLinkTypes() {
   return [
     {
       name: 'Jpeg and png images',
       id: 'embed_jpeg_and_png_images',
       className: 'picture compact',
-      ctsDefault: false,
-      re: /\.(jpe?g|png|svg)(:[a-zA-Z]+)?(?:\?[\w&;?=]*)?$/i,
-      makeNode: function(aNode, _reResult, div) {
-        div.innerHTML = `<a href="${aNode.href}"><img src="${aNode.href}"></a>`;
+      re: /\.(jpe?g|png|svg)(:[a-zA-Z]+)?(?:\?[\w&;\?=]*)?$/i,
+      makeNode: function(aNode, reResult, div) {
+        // dirty fix for dropbox urls
+        let url = aNode.href.endsWith('dl=0') ? aNode.href.replace('dl=0', 'raw=1') : aNode.href;
+        div.innerHTML = `<a href="${url}"><img src="${url}"></a>`;
         return div;
       }
     },
@@ -163,9 +190,8 @@ function getEmbeddableLinkTypes() {
       name: 'Gif images',
       id: 'embed_gif_images',
       className: 'picture compact',
-      ctsDefault: true,
-      re: /\.gif(:[a-zA-Z]+)?(?:\?[\w&;?=]*)?$/i,
-      makeNode: function(aNode, _reResult, div) {
+      re: /\.gif(:[a-zA-Z]+)?(?:\?[\w&;\?=]*)?$/i,
+      makeNode: function(aNode, reResult, div) {
         div.innerHTML = `<a href="${aNode.href}"><img src="${aNode.href}"></a>`;
         return div;
       }
@@ -174,9 +200,8 @@ function getEmbeddableLinkTypes() {
       name: 'Video (webm, mp4, ogv)',
       id: 'embed_webm_and_mp4_videos',
       className: 'video compact',
-      ctsDefault: false,
-      re: /\.(webm|mp4|m4v|ogv)(?:\?[\w&;?=]*)?$/i,
-      makeNode: function(aNode, _reResult, div) {
+      re: /\.(webm|mp4|m4v|ogv)(?:\?[\w&;\?=]*)?$/i,
+      makeNode: function(aNode, reResult, div) {
         div.innerHTML = `<video src="${aNode.href}" title="${aNode.href}" controls></video>`;
         return div;
       }
@@ -185,9 +210,8 @@ function getEmbeddableLinkTypes() {
       name: 'Audio (mp3, ogg, weba, opus, m4a, oga, wav)',
       id: 'embed_sound_files',
       className: 'audio singleColumn',
-      ctsDefault: false,
-      re: /\.(mp3|ogg|weba|opus|m4a|oga|wav)(?:\?[\w&;?=]*)?$/i,
-      makeNode: function(aNode, _reResult, div) {
+      re: /\.(mp3|ogg|weba|opus|m4a|oga|wav)(?:\?[\w&;\?=]*)?$/i,
+      makeNode: function(aNode, reResult, div) {
         div.innerHTML = `<audio src="${aNode.href}" title="${aNode.href}" controls></audio>`;
         return div;
       }
@@ -196,18 +220,17 @@ function getEmbeddableLinkTypes() {
       name: 'YouTube videos (and playlists)',
       id: 'embed_youtube_videos',
       className: 'youtube resizableV singleColumn',
-      ctsDefault: false,
-      re: /^(?:https?:)?\/\/(?:www\.|m\.|gaming\.)?(?:youtu(?:(?:\.be\/|be\.com\/(?:v|embed)\/)([-\w]+)|be\.com\/watch)((?:(?:\?|&(?:amp;)?)(?:\w+=[-.\w]*[-\w]))*)|youtube\.com\/playlist\?list=([-\w]*)(&(amp;)?[-\w?=]*)?)/i,
-      makeNode: function(_aNode, reResult, div) {
-        let [, v, args, plist] = reResult;
+      re: /^(?:https?:)?\/\/(?:www\.|m\.|gaming\.)?(?:youtu(?:(?:\.be\/|be\.com\/(?:v|embed)\/)([-\w]+)|be\.com\/watch)((?:(?:\?|&(?:amp;)?)(?:\w+=[-\.\w]*[-\w]))*)|youtube\.com\/playlist\?list=([-\w]*)(&(amp;)?[-\w\?=]*)?)/i,
+      makeNode: function(aNode, reResult, div) {
+        let [url, v, args, plist] = reResult;
         let iframeUrl;
         if (plist) {
           iframeUrl = '//www.youtube-nocookie.com/embed/videoseries?list=' + plist;
         } else {
           let pp = {}; args.replace(/^\?/, '')
-                           .split('&')
-                           .map(s => s.split('='))
-                           .forEach(z => pp[z[0]] = z[1]);
+            .split('&')
+            .map(s => s.split('='))
+            .forEach(z => pp[z[0]] = z[1]);
           let embedArgs = {
             rel: '0',
             enablejsapi: '1',
@@ -215,16 +238,16 @@ function getEmbeddableLinkTypes() {
           };
           if (pp.t) {
             const tre = /^(?:(\d+)|(?:(\d+)h)?(?:(\d+)m)?(\d+)s|(?:(\d+)h)?(\d+)m|(\d+)h)$/i;
-            let [, t, h, m, s, h1, m1, h2] = tre.exec(pp.t) || [];
-            embedArgs['start'] = (+t) || ((+(h || h1 || h2 || 0))*60*60 + (+(m || m1 || 0))*60 + (+(s || 0)));
+            let [, t, h, m, s, h1, m1, h2] = tre.exec(pp.t);
+            embedArgs['start'] = (+t) || ((+(h || h1 || h2 || 0)) * 60 * 60 + (+(m || m1 || 0)) * 60 + (+(s || 0)));
           }
           if (pp.list) {
             embedArgs['list'] = pp.list;
           }
           v = v || pp.v;
           let argsStr = Object.keys(embedArgs)
-                              .map(k => `${k}=${embedArgs[k]}`)
-                              .join('&');
+            .map(k => `${k}=${embedArgs[k]}`)
+            .join('&');
           iframeUrl = `//www.youtube-nocookie.com/embed/${v}?${argsStr}`;
         }
         let iframe = makeIframe(iframeUrl, '100%', '360px');
@@ -236,7 +259,6 @@ function getEmbeddableLinkTypes() {
       name: 'Vimeo videos',
       id: 'embed_vimeo_videos',
       className: 'vimeo resizableV',
-      ctsDefault: false,
       re: /^(?:https?:)?\/\/(?:www\.)?(?:player\.)?vimeo\.com\/(?:video\/|album\/[\d]+\/video\/)?([\d]+)/i,
       makeNode: function(aNode, reResult, div) {
         let iframe = makeIframe('//player.vimeo.com/video/' + reResult[1], '100%', '360px');
@@ -248,25 +270,25 @@ function getEmbeddableLinkTypes() {
       name: 'Twitter',
       id: 'embed_twitter_status',
       className: 'twi compact',
-      ctsDefault: false,
       re: /^(?:https?:)?\/\/(?:www\.)?(?:mobile\.)?twitter\.com\/([\w-]+)\/status(?:es)?\/([\d]+)/i,
       makeNode: function(aNode, reResult, div) {
-        let [url] = reResult;
-        url = url.replace('mobile.','');
-
-        div.innerHTML = `<blockquote class="twitter-tweet" data-lang="en"><a href="${url}"></a></blockquote>`;
-
-        if (window['twttr']) {
-          // https://developer.twitter.com/en/docs/twitter-for-websites/javascript-api/guides/scripting-loading-and-initialization
-          window['twttr'].widgets.load(div);
-        } else {
-          // innerHTML cannot insert scripts, so...
-          let script = document.createElement('script');
-          script.src = 'https://platform.twitter.com/widgets.js';
-          script.charset = 'utf-8';
-          div.appendChild(script);
-        }
-
+        fetch('https://beta.juick.com/api/oembed?url=' + reResult[0])
+          .then(response => response.json())
+          .then(json => {
+            div.innerHTML = json.html;
+          });
+        return div;
+      }
+    },
+    {
+      name: 'Instagram media',
+      id: 'embed_instagram_images',
+      className: 'picture compact',
+      re: /https?:\/\/www\.?instagram\.com(\/p\/\w+)\/?/i,
+      makeNode: function(aNode, reResult, div) {
+        let [url, postId] = reResult;
+        let mediaUrl = `https://instagr.am${postId}/media`;
+        div.innerHTML = `<a href="${aNode.href}"><img src="${mediaUrl}"></a>`;
         return div;
       }
     },
@@ -276,7 +298,7 @@ function getEmbeddableLinkTypes() {
       className: 'tg compact',
       re: /https?:\/\/t\.me\/(\S+)/i,
       makeNode: function(aNode, reResult, div) {
-        let [, post] = reResult;
+        let [url, post] = reResult;
         // innerHTML cannot insert scripts, so...
         let script = document.createElement('script');
         script.src = 'https://telegram.org/js/telegram-widget.js?18';
@@ -287,30 +309,39 @@ function getEmbeddableLinkTypes() {
         div.appendChild(script);
         return div;
       }
-    }
+    },
   ];
 }
 
-function embedLink(aNode, linkTypes, container, afterNode) {
+/**
+ * Embed a link
+ *
+ * @param { HTMLAnchorElement } aNode a DOM node of the link
+ * @param { LinkFormatData[] } linkTypes supported link types
+ * @param { HTMLElement } container a target DOM element with the link content
+ * @param { boolean } afterNode where to insert new DOM node
+ * @returns { boolean } `true` when some link was embedded
+ */
+function embedLink(aNode, linkTypes, container, afterNode = false) {
   let anyEmbed = false;
-  let linkId = (aNode.href.replace(/^https?:/i, '').replace(/'/gi,''));
+  let linkId = (aNode.href.replace(/^https?:/i, '').replace(/\'/gi, ''));
   let sameEmbed = container.querySelector(`*[data-linkid='${linkId}']`); // do not embed the same thing twice
-  if (sameEmbed === null) {
-    anyEmbed = [].some.call(linkTypes, function(linkType) {
-        let reResult = linkType.re.exec(aNode.href);
-        if (reResult) {
-          if (linkType.match && (linkType.match(aNode, reResult) === false)) { return false; }
-          let newNode = makeNewNode(linkType, aNode, reResult);
-          if (!newNode) { return false; }
-          newNode.setAttribute('data-linkid', linkId);
-          if (afterNode) {
-            insertAfter(newNode, afterNode);
-          } else {
-            container.appendChild(newNode);
-          }
-          aNode.classList.add('embedLink');
-          return true;
+  if (!sameEmbed) {
+    anyEmbed = linkTypes.some((linkType) => {
+      let reResult = linkType.re.exec(aNode.href);
+      if (reResult) {
+        if (linkType.match && (linkType.match(aNode, reResult) === false)) { return false; }
+        let newNode = makeNewNode(linkType, aNode, reResult);
+        if (!newNode) { return false; }
+        newNode.setAttribute('data-linkid', linkId);
+        if (afterNode) {
+          insertAfter(newNode, afterNode);
+        } else {
+          container.appendChild(newNode);
         }
+        aNode.classList.add('embedLink');
+        return true;
+      }
     });
   }
   return anyEmbed;
@@ -337,6 +368,7 @@ function embedLinks(aNodes, container) {
  * @param {string} allLinksSelector
  */
 export function embedLinksToX(x, beforeNodeSelector, allLinksSelector) {
+  let isCtsPost = false;
   let allLinks = x.querySelectorAll(allLinksSelector);
 
   let existingContainer = x.querySelector('div.embedContainer');
@@ -355,31 +387,15 @@ export function embedLinksToX(x, beforeNodeSelector, allLinksSelector) {
 }
 
 /**
- * Embed links to articles
- */
-function embedLinksToArticles() {
-  let beforeNodeSelector = 'nav.l';
-  let allLinksSelector = 'p:not(.ir) a, pre a';
-  Array.from(document.querySelectorAll('#content article')).forEach(article => {
-    embedLinksToX(article, beforeNodeSelector, allLinksSelector);
-  });
-}
-
-/**
- * Embed links to post
+ * Embed all the links in all messages/replies on the page.
  */
-function embedLinksToPost() {
+export function embedAll() {
   let beforeNodeSelector = '.msg-txt + *';
   let allLinksSelector = '.msg-txt a';
   Array.from(document.querySelectorAll('#content .msg-cont')).forEach(msg => {
     embedLinksToX(msg, beforeNodeSelector, allLinksSelector);
   });
 }
-
-/**
- * @external NodeListOf
- */
-
 /**
  * Embed URLs to container
  * 
@@ -390,15 +406,5 @@ export function embedUrls(urls, embedContainer) {
   embedLinks(urls, embedContainer);
 }
 
-/**
- * Embed all the links in all messages/replies on the page.
- */
-export function embedAll() {
-  if (document.querySelector('#content article[data-mid]')) {
-    embedLinksToArticles();
-  } else {
-    embedLinksToPost();
-  }
-}
 
 export const format = juickFormat;