From 8e14fe2e7c9e8a067a65f64f5f7d63f2419a3f73 Mon Sep 17 00:00:00 2001
From: HF <pixelplanetdev@gmail.com>
Date: Fri, 1 Apr 2022 23:26:24 +0200
Subject: [PATCH] add telegram embeds

---
 public/embico/telegram.png                    | Bin 0 -> 267 bytes
 src/components/MdLink.jsx                     |   1 +
 src/components/Modtools.jsx                   |   2 +-
 src/components/embeds/Telegram.jsx            |  84 +++
 src/components/embeds/index.js                |   5 +
 src/components/hooks/drag.js                  |   4 +-
 .../hooks/{useInterval.js => interval.js}     |   0
 src/components/hooks/postMessage.js           |  25 +
 src/components/telegram-widget.js             | 528 ++++++++++++++++++
 9 files changed, 646 insertions(+), 3 deletions(-)
 create mode 100644 public/embico/telegram.png
 create mode 100644 src/components/embeds/Telegram.jsx
 rename src/components/hooks/{useInterval.js => interval.js} (100%)
 create mode 100644 src/components/hooks/postMessage.js
 create mode 100644 src/components/telegram-widget.js

diff --git a/public/embico/telegram.png b/public/embico/telegram.png
new file mode 100644
index 0000000000000000000000000000000000000000..00450dce0ce799939156ad7f0652989d38208c79
GIT binary patch
literal 267
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z@4x@9y!_I5;_1D2-}gWGu=DP_)z{uEz4ChgrB^dAyy!mt?EA03@4o$h^Yz!0k3UX7
z`E=^Zr%gBCZoK)n{Kyks$Hvz{<5)_9{DRL1Fa*BMy)FUdr+T_LhDcnlJ-=P3!GMQ3
zV7UgX$Ku2P>os_G&N<v*w%;**qR5hH4-cVT-3qT3-qYdPG+W}%<4uop1lZ3kc3dgI
z`(RRIuI$OyoW|a%aTUb|H_oOAN{Fog`#}58ey{t5T}vK)o?63j{1L0wlIT@dKnoc>
MUHx3vIVCg!0CA>+w*UYD

literal 0
HcmV?d00001

diff --git a/src/components/MdLink.jsx b/src/components/MdLink.jsx
index 374e5899..3c2c7343 100644
--- a/src/components/MdLink.jsx
+++ b/src/components/MdLink.jsx
@@ -15,6 +15,7 @@ const titleAllowed = [
   'matrix.pixelplanet.fun',
   'youtube',
   'youtu.be',
+  't.me',
 ];
 
 const MdLink = ({ href, title }) => {
diff --git a/src/components/Modtools.jsx b/src/components/Modtools.jsx
index 2156b1a0..eb8adb68 100644
--- a/src/components/Modtools.jsx
+++ b/src/components/Modtools.jsx
@@ -7,7 +7,7 @@ import React, { useState, useEffect } from 'react';
 import { useSelector, shallowEqual } from 'react-redux';
 import { t } from 'ttag';
 
-import useInterval from './hooks/useInterval';
+import useInterval from './hooks/interval';
 import { getToday, dateToString } from '../core/utils';
 
 const keptState = {
diff --git a/src/components/embeds/Telegram.jsx b/src/components/embeds/Telegram.jsx
new file mode 100644
index 00000000..21d1e41d
--- /dev/null
+++ b/src/components/embeds/Telegram.jsx
@@ -0,0 +1,84 @@
+import React, { useState, useEffect, useRef } from 'react';
+
+import usePostMessage from '../hooks/postMessage';
+
+const urlStr = 't.me/';
+
+function getUserPostFromUrl(url) {
+  let aPos = url.indexOf(urlStr);
+  if (aPos === -1) {
+    return url;
+  }
+  aPos += urlStr.length;
+  if (aPos >= url.length) {
+    return url;
+  }
+  let bPos = url.indexOf('/', aPos);
+  if (bPos === -1) {
+    bPos = url.length;
+    return url.substring(aPos);
+  }
+  const user = url.substring(aPos, bPos);
+  bPos += 1;
+  if (bPos >= url.length) {
+    return user;
+  }
+  aPos = url.indexOf('/', bPos);
+  if (aPos === -1) {
+    aPos = url.length;
+  }
+  const post = url.substring(bPos, aPos);
+  return `${user} | ${post}`;
+}
+
+const Telegram = ({ url }) => {
+  const [frameHeight, setFrameHeight] = useState(200);
+  const iFrameRef = useRef(null);
+
+  usePostMessage(iFrameRef,
+    (data) => {
+      try {
+        const pdata = JSON.parse(data);
+        if (pdata.event === 'resize') {
+          if (pdata.height) {
+            setFrameHeight(pdata.height);
+          }
+        }
+      } catch {
+        console.error(`Could not read postMessage from frame: ${data}`);
+      }
+    },
+  );
+
+  const userPost = url.substring(url.indexOf(urlStr) + urlStr.length)
+  const embedCode =
+    // eslint-disable-next-line max-len
+    `<script async src="https://telegram.org/js/telegram-widget.js?18" data-telegram-post="${userPost}" data-width="100%"></script>`;
+
+//      srcDoc={embedCode}
+  return (
+    <iframe
+      ref={iFrameRef}
+      style={{
+        width: '100%',
+        height: frameHeight,
+      }}
+      src={`https://t.me/${userPost}?embed=1`}
+      frameBorder="0"
+      referrerPolicy="no-referrer"
+      allow="autoplay; picture-in-picture"
+      scrolling="no"
+      // eslint-disable-next-line max-len
+      sandbox="allow-scripts allow-modals allow-forms allow-popups allow-same-origin allow-presentation"
+      allowFullScreen
+      title="Embedded telegram"
+    />
+  );
+};
+
+export default [
+  React.memo(Telegram),
+  (url) => url.includes(urlStr),
+  (url) => getUserPostFromUrl(url),
+  `${window.ssv.assetserver}/embico/telegram.png`,
+];
diff --git a/src/components/embeds/index.js b/src/components/embeds/index.js
index d3424e77..846ab4cc 100644
--- a/src/components/embeds/index.js
+++ b/src/components/embeds/index.js
@@ -1,10 +1,12 @@
 /*
  * Embeds for external content like youtube, etc.
+ * Usage for Markdown is in ../MdLink.js
  *
  */
 import TikTok from './TikTok';
 import YouTube from './YouTube';
 import Matrix from './Matrix';
+import Telegram from './Telegram';
 // import Odysee from './Odysee';
 import DirectLinkMedia from './DirectLinkMedia';
 
@@ -15,6 +17,8 @@ import DirectLinkMedia from './DirectLinkMedia';
  *    ReactElement: takes url as prop,
  *    isEmbedAvailable: function that takes url as argument and returns boolean
  *                      whether embed is available for this url of this domain
+ *    title: function that returns the title for a link, gets url as argument
+ *    icon: link to icon
  *  ]
  */
 export default {
@@ -28,5 +32,6 @@ export default {
   'files.catbox.moe': DirectLinkMedia,
   'i.redd.it': DirectLinkMedia,
   'media.consumeproduct.win': DirectLinkMedia,
+  't.me': Telegram,
   // 'odysee': Odysee,
 };
diff --git a/src/components/hooks/drag.js b/src/components/hooks/drag.js
index 62eba03e..6ea252c5 100644
--- a/src/components/hooks/drag.js
+++ b/src/components/hooks/drag.js
@@ -49,7 +49,7 @@ function useDrag(elRef, startHandler, diffHandler) {
   }, [startHandler]);
 
   useEffect(() => {
-    if (elRef && elRef.current) {
+    if (elRef.current) {
       elRef.current.addEventListener('mousedown', startDrag, {
         passive: false,
       });
@@ -58,7 +58,7 @@ function useDrag(elRef, startHandler, diffHandler) {
       });
     }
     return () => {
-      if (elRef && elRef.current) {
+      if (elRef.current) {
         elRef.current.removeEventListener('mousedown', startDrag);
         elRef.current.removeEventListener('touchstart', startDrag);
       }
diff --git a/src/components/hooks/useInterval.js b/src/components/hooks/interval.js
similarity index 100%
rename from src/components/hooks/useInterval.js
rename to src/components/hooks/interval.js
diff --git a/src/components/hooks/postMessage.js b/src/components/hooks/postMessage.js
new file mode 100644
index 00000000..8068a4cf
--- /dev/null
+++ b/src/components/hooks/postMessage.js
@@ -0,0 +1,25 @@
+import { useEffect, useRef } from 'react';
+
+function usePostMessage(iFrameRef, callback) {
+  const savedCallback = useRef();
+
+  // Remember the latest callback.
+  useEffect(() => {
+    savedCallback.current = callback;
+  }, [callback]);
+
+  useEffect(() => {
+    function handleMessage(evt) {
+      if (evt.source !== iFrameRef.current.contentWindow) {
+        return;
+      }
+      savedCallback.current(evt.data);
+    }
+
+    window.addEventListener('message', handleMessage, false);
+
+    return () => window.removeEventListener('message', handleMessage);
+  }, []);
+}
+
+export default usePostMessage;
diff --git a/src/components/telegram-widget.js b/src/components/telegram-widget.js
new file mode 100644
index 00000000..6d930252
--- /dev/null
+++ b/src/components/telegram-widget.js
@@ -0,0 +1,528 @@
+(function(window) {
+  (function(window){
+    window.__parseFunction = function(__func, __attrs) {
+      __attrs = __attrs || [];
+      __func = '(function(' + __attrs.join(',') + '){' + __func + '})';
+      return window.execScript ? window.execScript(__func) : eval(__func);
+    }
+  }(window));
+  (function(window){
+
+  function addEvent(el, event, handler) {
+    var events = event.split(/\s+/);
+    for (var i = 0; i < events.length; i++) {
+      if (el.addEventListener) {
+        el.addEventListener(events[i], handler);
+      } else {
+        el.attachEvent('on' + events[i], handler);
+      }
+    }
+  }
+  function removeEvent(el, event, handler) {
+    var events = event.split(/\s+/);
+    for (var i = 0; i < events.length; i++) {
+      if (el.removeEventListener) {
+        el.removeEventListener(events[i], handler);
+      } else {
+        el.detachEvent('on' + events[i], handler);
+      }
+    }
+  }
+  function getCssProperty(el, prop) {
+    if (window.getComputedStyle) {
+      return window.getComputedStyle(el, '').getPropertyValue(prop) || null;
+    } else if (el.currentStyle) {
+      return el.currentStyle[prop] || null;
+    }
+    return null;
+  }
+  function geById(el_or_id) {
+    if (typeof el_or_id == 'string' || el_or_id instanceof String) {
+      return document.getElementById(el_or_id);
+    } else if (el_or_id instanceof HTMLElement) {
+      return el_or_id;
+    }
+    return null;
+  }
+
+  var getWidgetsOrigin = function(default_origin, dev_origin) {
+    var link = document.createElement('A'), origin;
+    link.href = document.currentScript && document.currentScript.src || default_origin;
+    origin = link.origin || link.protocol + '//' + link.hostname;
+    if (origin == 'https://telegram.org') {
+      origin = default_origin;
+    } else if (origin == 'https://telegram-js.azureedge.net' || origin == 'https://tg.dev') {
+      origin = dev_origin;
+    }
+    return origin;
+  };
+
+  var getPageCanonical = function() {
+    var a = document.createElement('A'), link, href;
+    if (document.querySelector) {
+      link = document.querySelector('link[rel="canonical"]');
+      if (link && (href = link.getAttribute('href'))) {
+        a.href = href;
+        return a.href;
+      }
+    } else {
+      var links = document.getElementsByTagName('LINK');
+      for (var i = 0; i < links.length; i++) {
+        if ((link = links[i]) &&
+            (link.getAttribute('rel') == 'canonical') &&
+            (href = link.getAttribute('href'))) {
+          a.href = href;
+          return a.href;
+        }
+      }
+    }
+    return false;
+  };
+
+  function getXHR() {
+    if (navigator.appName == "Microsoft Internet Explorer"){
+      return new ActiveXObject("Microsoft.XMLHTTP");
+    } else {
+      return new XMLHttpRequest();
+    }
+  }
+
+  if (!window.Telegram) {
+    window.Telegram = {};
+  }
+  if (!window.Telegram.__WidgetUuid) {
+    window.Telegram.__WidgetUuid = 0;
+  }
+  if (!window.Telegram.__WidgetLastId) {
+    window.Telegram.__WidgetLastId = 0;
+  }
+  if (!window.Telegram.__WidgetCallbacks) {
+    window.Telegram.__WidgetCallbacks = {};
+  }
+
+  function postMessageToIframe(iframe, event, data, callback) {
+    if (!iframe._ready) {
+      if (!iframe._readyQueue) iframe._readyQueue = [];
+      iframe._readyQueue.push([event, data, callback]);
+      return;
+    }
+    try {
+      data = data || {};
+      data.event = event;
+      if (callback) {
+        data._cb = ++window.Telegram.__WidgetLastId;
+        window.Telegram.__WidgetCallbacks[data._cb] = {
+          iframe: iframe,
+          callback: callback
+        };
+      }
+      iframe.contentWindow.postMessage(JSON.stringify(data), '*');
+    } catch(e) {}
+  }
+
+  function initWidget(widgetEl) {
+    var widgetId, widgetElId, widgetsOrigin, existsEl,
+        src, styles = {}, allowedAttrs = [],
+        defWidth, defHeight, scrollable = false, onInitAuthUser, onAuthUser, onUnauth;
+    if (!widgetEl.tagName ||
+        !(widgetEl.tagName.toUpperCase() == 'SCRIPT' ||
+          widgetEl.tagName.toUpperCase() == 'BLOCKQUOTE' &&
+          widgetEl.classList.contains('telegram-post'))) {
+      return null;
+    }
+    if (widgetEl._iframe) {
+      return widgetEl._iframe;
+    }
+    if (widgetId = widgetEl.getAttribute('data-telegram-post')) {
+      var comment = widgetEl.getAttribute('data-comment') || '';
+      widgetsOrigin = getWidgetsOrigin('https://t.me', 'https://post.tg.dev');
+      widgetElId = 'telegram-post-' + widgetId.replace(/[^a-z0-9_]/ig, '-') + (comment ? '-comment' + comment : '');
+      src = widgetsOrigin + '/' + widgetId + '?embed=1';
+      allowedAttrs = ['comment', 'userpic', 'tme_mode?', 'single?', 'color', 'dark', 'dark_color'];
+      defWidth = widgetEl.getAttribute('data-width') || '100%';
+      defHeight = '';
+      styles.minWidth = '320px';
+    }
+    else if (widgetId = widgetEl.getAttribute('data-telegram-discussion')) {
+      widgetsOrigin = getWidgetsOrigin('https://t.me', 'https://post.tg.dev');
+      widgetElId = 'telegram-discussion-' + widgetId.replace(/[^a-z0-9_]/ig, '-') + '-' + (++window.Telegram.__WidgetUuid);
+      var websitePageUrl = widgetEl.getAttribute('data-page-url');
+      if (!websitePageUrl) {
+        websitePageUrl = getPageCanonical();
+      }
+      src = widgetsOrigin + '/' + widgetId + '?embed=1&discussion=1' + (websitePageUrl ? '&page_url=' + encodeURIComponent(websitePageUrl) : '');
+      allowedAttrs = ['comments_limit', 'color', 'colorful', 'dark', 'dark_color', 'width', 'height'];
+      defWidth = widgetEl.getAttribute('data-width') || '100%';
+      defHeight = widgetEl.getAttribute('data-height') || 0;
+      styles.minWidth = '320px';
+      if (defHeight > 0) {
+        scrollable = true;
+      }
+    }
+    else if (widgetEl.hasAttribute('data-telegram-login')) {
+      widgetId = widgetEl.getAttribute('data-telegram-login');
+      widgetsOrigin = getWidgetsOrigin('https://oauth.telegram.org', 'https://oauth.tg.dev');
+      widgetElId = 'telegram-login-' + widgetId.replace(/[^a-z0-9_]/ig, '-');
+      src = widgetsOrigin + '/embed/' + widgetId + '?origin=' + encodeURIComponent(location.origin || location.protocol + '//' + location.hostname);
+      allowedAttrs = ['size', 'userpic', 'init_auth', 'request_access', 'radius', 'min_width', 'max_width', 'lang'];
+      defWidth = 186;
+      defHeight = 28;
+      if (widgetEl.hasAttribute('data-size')) {
+        var size = widgetEl.getAttribute('data-size');
+        if (size == 'small') defWidth = 148, defHeight = 20;
+        else if (size == 'large') defWidth = 238, defHeight = 40;
+      }
+      if (widgetEl.hasAttribute('data-onauth')) {
+        onInitAuthUser = onAuthUser = __parseFunction(widgetEl.getAttribute('data-onauth'), ['user']);
+      }
+      else if (widgetEl.hasAttribute('data-auth-url')) {
+        var a = document.createElement('A');
+        a.href = widgetEl.getAttribute('data-auth-url');
+        onAuthUser = function(user) {
+          var authUrl = a.href;
+          authUrl += (authUrl.indexOf('?') >= 0) ? '&' : '?';
+          var params = [];
+          for (var key in user) {
+            params.push(key + '=' + encodeURIComponent(user[key]));
+          }
+          authUrl += params.join('&');
+          location.href = authUrl;
+        };
+      }
+      if (widgetEl.hasAttribute('data-onunauth')) {
+        onUnauth = __parseFunction(widgetEl.getAttribute('data-onunauth'));
+      }
+    }
+    else if (widgetId = widgetEl.getAttribute('data-telegram-share-url')) {
+      widgetsOrigin = getWidgetsOrigin('https://t.me', 'https://post.tg.dev');
+      widgetElId = 'telegram-share-' + window.btoa(widgetId);
+      src = widgetsOrigin + '/share/embed?origin=' + encodeURIComponent(location.origin || location.protocol + '//' + location.hostname);
+      allowedAttrs = ['telegram-share-url', 'comment', 'size', 'text'];
+      defWidth = 60;
+      defHeight = 20;
+      if (widgetEl.getAttribute('data-size') == 'large') {
+        defWidth = 76;
+        defHeight = 28;
+      }
+    }
+    else {
+      return null;
+    }
+    existsEl = document.getElementById(widgetElId);
+    if (existsEl) {
+      return existsEl;
+    }
+    for (var i = 0; i < allowedAttrs.length; i++) {
+      var attr = allowedAttrs[i];
+      var novalue = attr.substr(-1) == '?';
+      if (novalue) {
+        attr = attr.slice(0, -1);
+      }
+      var data_attr = 'data-' + attr.replace(/_/g, '-');
+      if (widgetEl.hasAttribute(data_attr)) {
+        var attr_value = novalue ? '1' : encodeURIComponent(widgetEl.getAttribute(data_attr));
+        src += '&' + attr + '=' + attr_value;
+      }
+    }
+    function getCurCoords(iframe) {
+      var docEl = document.documentElement;
+      var frect = iframe.getBoundingClientRect();
+      return {
+        frameTop: frect.top,
+        frameBottom: frect.bottom,
+        frameLeft: frect.left,
+        frameRight: frect.right,
+        frameWidth: frect.width,
+        frameHeight: frect.height,
+        scrollTop: window.pageYOffset,
+        scrollLeft: window.pageXOffset,
+        clientWidth: docEl.clientWidth,
+        clientHeight: docEl.clientHeight
+      };
+    }
+    function visibilityHandler() {
+      if (isVisible(iframe, 50)) {
+        postMessageToIframe(iframe, 'visible', {frame: widgetElId});
+      }
+    }
+    function focusHandler() {
+      postMessageToIframe(iframe, 'focus', {has_focus: document.hasFocus()});
+    }
+    function postMessageHandler(event) {
+      if (event.source !== iframe.contentWindow ||
+          event.origin != widgetsOrigin) {
+        return;
+      }
+      try {
+        var data = JSON.parse(event.data);
+      } catch(e) {
+        var data = {};
+      }
+      if (data.event == 'resize') {
+        if (data.height) {
+          iframe.style.height = data.height + 'px';
+        }
+        if (data.width) {
+          iframe.style.width = data.width + 'px';
+        }
+      }
+      else if (data.event == 'ready') {
+        iframe._ready = true;
+        focusHandler();
+        for (var i = 0; i < iframe._readyQueue.length; i++) {
+          var queue_item = iframe._readyQueue[i];
+          postMessageToIframe(iframe, queue_item[0], queue_item[1], queue_item[2]);
+        }
+        iframe._readyQueue = [];
+      }
+      else if (data.event == 'visible_off') {
+        removeEvent(window, 'scroll', visibilityHandler);
+        removeEvent(window, 'resize', visibilityHandler);
+      }
+      else if (data.event == 'get_coords') {
+        postMessageToIframe(iframe, 'callback', {
+          _cb: data._cb,
+          value: getCurCoords(iframe)
+        });
+      }
+      else if (data.event == 'scroll_to') {
+        try {
+          window.scrollTo(data.x || 0, data.y || 0);
+        } catch(e) {}
+      }
+      else if (data.event == 'auth_user') {
+        if (data.init) {
+          onInitAuthUser && onInitAuthUser(data.auth_data);
+        } else {
+          onAuthUser && onAuthUser(data.auth_data);
+        }
+      }
+      else if (data.event == 'unauthorized') {
+        onUnauth && onUnauth();
+      }
+      else if (data.event == 'callback') {
+        var cb_data = null;
+        if (cb_data = window.Telegram.__WidgetCallbacks[data._cb]) {
+          if (cb_data.iframe === iframe) {
+            cb_data.callback(data.value);
+            delete window.Telegram.__WidgetCallbacks[data._cb];
+          }
+        } else {
+          console.warn('Callback #' + data._cb + ' not found');
+        }
+      }
+    }
+    var iframe = document.createElement('iframe');
+    iframe.id = widgetElId;
+    iframe.src = src;
+    iframe.width = defWidth;
+    iframe.height = defHeight;
+    iframe.setAttribute('frameborder', '0');
+    if (!scrollable) {
+      iframe.setAttribute('scrolling', 'no');
+      iframe.style.overflow = 'hidden';
+    }
+    iframe.style.border = 'none';
+    for (var prop in styles) {
+      iframe.style[prop] = styles[prop];
+    }
+    if (widgetEl.parentNode) {
+      widgetEl.parentNode.insertBefore(iframe, widgetEl);
+      if (widgetEl.tagName.toUpperCase() == 'BLOCKQUOTE') {
+        widgetEl.parentNode.removeChild(widgetEl);
+      }
+    }
+    iframe._ready = false;
+    iframe._readyQueue = [];
+    widgetEl._iframe = iframe;
+    addEvent(iframe, 'load', function() {
+      removeEvent(iframe, 'load', visibilityHandler);
+      addEvent(window, 'scroll', visibilityHandler);
+      addEvent(window, 'resize', visibilityHandler);
+      visibilityHandler();
+    });
+    addEvent(window, 'focus blur', focusHandler);
+    addEvent(window, 'message', postMessageHandler);
+    return iframe;
+  }
+  function isVisible(el, padding) {
+    var node = el, val;
+    var visibility = getCssProperty(node, 'visibility');
+    if (visibility == 'hidden') return false;
+    while (node) {
+      if (node === document.documentElement) break;
+      var display = getCssProperty(node, 'display');
+      if (display == 'none') return false;
+      var opacity = getCssProperty(node, 'opacity');
+      if (opacity !== null && opacity < 0.1) return false;
+      node = node.parentNode;
+    }
+    if (el.getBoundingClientRect) {
+      padding = +padding || 0;
+      var rect = el.getBoundingClientRect();
+      var html = document.documentElement;
+      if (rect.bottom < padding ||
+          rect.right < padding ||
+          rect.top > (window.innerHeight || html.clientHeight) - padding ||
+          rect.left > (window.innerWidth || html.clientWidth) - padding) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  function getAllWidgets() {
+    var widgets = [];
+    if (document.querySelectorAll) {
+      widgets = document.querySelectorAll('script[data-telegram-post],blockquote.telegram-post,script[data-telegram-discussion],script[data-telegram-login],script[data-telegram-share-url]');
+    } else {
+      widgets = Array.prototype.slice.apply(document.getElementsByTagName('SCRIPT'));
+      widgets = widgets.concat(Array.prototype.slice.apply(document.getElementsByTagName('BLOCKQUOTE')));
+    }
+    return widgets;
+  }
+
+  function getWidgetInfo(el_or_id, callback) {
+    var e = null, iframe = null;
+    if (el = geById(el_or_id)) {
+      if (el.tagName &&
+          el.tagName.toUpperCase() == 'IFRAME') {
+        iframe = el;
+      } else if (el._iframe) {
+        iframe = el._iframe;
+      }
+      if (iframe && callback) {
+        postMessageToIframe(iframe, 'get_info', {}, callback);
+      }
+    }
+  }
+
+  function setWidgetOptions(options, el_or_id) {
+    var e = null, iframe = null;
+    if (typeof el_or_id === 'undefined') {
+      var widgets = getAllWidgets();
+      for (var i = 0; i < widgets.length; i++) {
+        if (iframe = widgets[i]._iframe) {
+          postMessageToIframe(iframe, 'set_options', {options: options});
+        }
+      }
+    } else {
+      if (el = geById(el_or_id)) {
+        if (el.tagName &&
+            el.tagName.toUpperCase() == 'IFRAME') {
+          iframe = el;
+        } else if (el._iframe) {
+          iframe = el._iframe;
+        }
+        if (iframe) {
+          postMessageToIframe(iframe, 'set_options', {options: options});
+        }
+      }
+    }
+  }
+
+  if (!document.currentScript ||
+      !initWidget(document.currentScript)) {
+    var widgets = getAllWidgets();
+    for (var i = 0; i < widgets.length; i++) {
+      initWidget(widgets[i]);
+    }
+  }
+
+  var TelegramLogin = {
+    popups: {},
+    auth: function(options, callback) {
+      var bot_id = parseInt(options.bot_id);
+      if (!bot_id) {
+        throw new Error('Bot id required');
+      }
+      var width = 550;
+      var height = 470;
+      var left = Math.max(0, (screen.width - width) / 2) + (screen.availLeft | 0),
+          top = Math.max(0, (screen.height - height) / 2) + (screen.availTop | 0);
+      var onMessage = function (event) {
+        try {
+          var data = JSON.parse(event.data);
+        } catch(e) {
+          var data = {};
+        }
+        if (!TelegramLogin.popups[bot_id]) return;
+        if (event.source !== TelegramLogin.popups[bot_id].window) return;
+        if (data.event == 'auth_result') {
+          onAuthDone(data.result);
+        }
+      };
+      var onAuthDone = function (authData) {
+        if (!TelegramLogin.popups[bot_id]) return;
+        if (TelegramLogin.popups[bot_id].authFinished) return;
+        callback && callback(authData);
+        TelegramLogin.popups[bot_id].authFinished = true;
+        removeEvent(window, 'message', onMessage);
+      };
+      var checkClose = function(bot_id) {
+        if (!TelegramLogin.popups[bot_id]) return;
+        if (!TelegramLogin.popups[bot_id].window ||
+            TelegramLogin.popups[bot_id].window.closed) {
+          return TelegramLogin.getAuthData(options, function(origin, authData) {
+            onAuthDone(authData);
+          });
+        }
+        setTimeout(checkClose, 100, bot_id);
+      }
+      var popup_url = Telegram.Login.widgetsOrigin + '/auth?bot_id=' + encodeURIComponent(options.bot_id) + '&origin=' + encodeURIComponent(location.origin || location.protocol + '//' + location.hostname) + (options.request_access ? '&request_access=' + encodeURIComponent(options.request_access) : '') + (options.lang ? '&lang=' + encodeURIComponent(options.lang) : '');
+      var popup = window.open(popup_url, 'telegram_oauth_bot' + bot_id, 'width=' + width + ',height=' + height + ',left=' + left + ',top=' + top + ',status=0,location=0,menubar=0,toolbar=0');
+      TelegramLogin.popups[bot_id] = {
+        window: popup,
+        authFinished: false
+      };
+      if (popup) {
+        addEvent(window, 'message', onMessage);
+        popup.focus();
+        checkClose(bot_id);
+      }
+    },
+    getAuthData: function(options, callback) {
+      var bot_id = parseInt(options.bot_id);
+      if (!bot_id) {
+        throw new Error('Bot id required');
+      }
+      var xhr = getXHR();
+      var url = Telegram.Login.widgetsOrigin + '/auth/get';
+      xhr.open('POST', url);
+      xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8');
+      xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
+      xhr.onreadystatechange = function() {
+        if (xhr.readyState == 4) {
+          if (typeof xhr.responseBody == 'undefined' && xhr.responseText) {
+            try {
+              var result = JSON.parse(xhr.responseText);
+            } catch(e) {
+              var result = {};
+            }
+            if (result.user) {
+              callback(result.origin, result.user);
+            } else {
+              callback(result.origin, false);
+            }
+          } else {
+            callback('*', false);
+          }
+        }
+      };
+      xhr.onerror = function() {
+        callback('*', false);
+      };
+      xhr.withCredentials = true;
+      xhr.send('bot_id=' + encodeURIComponent(options.bot_id) + (options.lang ? '&lang=' + encodeURIComponent(options.lang) : ''));
+    }
+  };
+
+  window.Telegram.getWidgetInfo = getWidgetInfo;
+  window.Telegram.setWidgetOptions = setWidgetOptions;
+  window.Telegram.Login = {
+    auth: TelegramLogin.auth,
+    widgetsOrigin: getWidgetsOrigin('https://oauth.telegram.org', 'https://oauth.tg.dev')
+  };
+
+  }(window));
+})(window);