Bypass Telegram's saving content restrictions for media and text; batch download media from selected messages
// ==UserScript==
// @name Telegram Web - Allow Saving Content
// @namespace c0d3r
// @license MIT
// @version 0.3
// @description Bypass Telegram's saving content restrictions for media and text; batch download media from selected messages
// @author c0d3r
// @match https://web.telegram.org/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=telegram.org
// @grant unsafeWindow
// @grant GM_addStyle
// ==/UserScript==
// Extract media from message and download to disc
function downloadMediaFromMessage(msg) {
var myMedia;
if (msg.media) {
// Extract the media object; simple alternative to getMediaFromMessage
myMedia = msg.media.document || msg.media.photo;
}
if (myMedia) {
// Download media using the built-in function; auto sets file name and extension
unsafeWindow.appDownloadManager.downloadToDisc({media: myMedia});
}
}
// Throttle download of multiple medias by 1 second
function slowDown(secs, msg, btnElm, btnTxt, btnIco) {
setTimeout(function () {
btnElm.disabled = true;
btnElm.style.opacity = 0.6;
btnTxt.textContent = '..' + (secs + 1) + '..';
btnIco.innerHTML = '';
downloadMediaFromMessage(msg);
}, secs * 1000);
}
// Get message object then download
async function downloadSingleMedia(pid, mid) {
// Get the message object based on peer and message ID
var msg = await unsafeWindow.mtprotoMessagePort.getMessageByPeer(pid, mid);
downloadMediaFromMessage(msg);
}
// Download multiple medias from selected messages
async function downloadSelectedMedia() {
var msgs = await unsafeWindow.appImManager.chat.selection.getSelectedMessages();
var secs = 0;
var btnElm = document.querySelector('#batch-btn');
var btnTxt = btnElm.querySelector('.i18n');
var btnIco = btnElm.querySelector('.tgico');
msgs.forEach(function (msg, ind) {
// Only process messages with media
if (msg.media && (msg.media.document || msg.media.photo)) {
slowDown(secs, msg, btnElm, btnTxt, btnIco);
secs++;
}
// Reset the batch button after last download
if (ind === msgs.length - 1) {
setTimeout(function () {
btnElm.disabled = false;
btnElm.style.opacity = 1;
btnTxt.textContent = 'D/L';
btnIco.innerHTML = '';
}, secs * 1000);
}
});
}
(function () {
'use strict';
if (window.location.pathname.startsWith('/a/')) {
// Redirect to the WebK version from the WebA version
window.location.replace(window.location.href.replace('.org/a/', '.org/k/'));
} else {
// The root element used for watching and listening
var colCenter = document.querySelector('#column-center');
// Array of class names for media; we only add Download button if these are right clicked
var clArray = ['photo', 'audio', 'video', 'voice-message', 'media-round', 'grouped-item', 'document-container', 'sticker'];
// HTML code for the Download button
var btnHtml = '<div class="btn-menu-item rp-overflow" id="down-btn"><span class="tgico btn-menu-item-icon"></span><span class="i18n btn-menu-item-text">Download</span></div>';
// HTML code for the batch D/L button
var batchBtnHtml = ' <button class="btn-primary btn-transparent text-bold" id="batch-btn" title="Download Media"><span class="tgico"></span> <span class="i18n">D/L</span></button>';
// A flag for checking if we need to add the Download button
var needBtn = false;
// Variables for the current message and peer ID
var curMid, curPid, observer;
// Add CSS styles to allow text selection
GM_addStyle('.chat.no-forwards .bubbles, .bubble, .bubble-content { -webkit-user-select: text!important; -moz-user-select: text!important; user-select: text!important; }');
colCenter.addEventListener('mouseup', function (e) {
// Listen to the right mouse button clicks
if (e.button === 2) {
needBtn = false;
// Test if the current chat has restricted content saving
if (document.querySelector('.chat.no-forwards')) {
// Find the closest element containing message and peer IDs
var closest = e.target.closest('[data-mid]');
if (closest) {
// Check if the element actually contains some media classes
if (clArray.some(function (clName) {
return closest.classList.contains(clName);
})) {
curMid = closest.dataset.mid;
curPid = closest.dataset.peerId;
needBtn = true;
}
}
}
}
});
observer = new MutationObserver(function (mutList) {
mutList.forEach(function (mut) {
mut.addedNodes.forEach(function (anod) {
// Check if context menu has been added to the DOM
if (anod.id === 'bubble-contextmenu' && needBtn) {
// Add the custom Download button and assign a click event
anod.querySelector('.btn-menu-item').insertAdjacentHTML('beforebegin', btnHtml);
anod.querySelector('#down-btn').addEventListener('click', function () {
downloadSingleMedia(curPid, curMid);
});
}
// Check if selection popup has been added to the DOM
if (anod.classList && anod.classList.contains('selection-wrapper')) {
anod.querySelector('.selection-container-left').insertAdjacentHTML('beforeend', batchBtnHtml);
anod.querySelector('#batch-btn').addEventListener('click', function () {
downloadSelectedMedia();
});
}
});
});
});
// Observe when context menu is added to the DOM
observer.observe(colCenter, {
subtree: true, childList: true
});
}
})();