301 lines
8.4 KiB
PHP
301 lines
8.4 KiB
PHP
<?php
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class TelegramBridge extends BridgeAbstract {
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const NAME = 'Telegram Bridge';
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const URI = 'https://t.me';
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const DESCRIPTION = 'Returns newest posts from a public Telegram channel';
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const MAINTAINER = 'VerifiedJoseph';
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const PARAMETERS = array(array(
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'username' => array(
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'name' => 'Username',
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'type' => 'text',
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'required' => true,
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'exampleValue' => '@telegram',
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)
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)
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);
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const CACHE_TIMEOUT = 900; // 15 mins
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private $feedName = '';
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private $enclosures = array();
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private $itemTitle = '';
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private $backgroundImageRegex = "/background-image:url\('(.*)'\)/";
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public function collectData() {
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$html = getSimpleHTMLDOM($this->getURI())
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or returnServerError('Could not request: ' . $this->getURI());
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$channelTitle = htmlspecialchars_decode(
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$html->find('div.tgme_channel_info_header_title span', 0)->plaintext,
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ENT_QUOTES
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);
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$this->feedName = $channelTitle . ' (@' . $this->processUsername() . ')';
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foreach($html->find('div.tgme_widget_message_wrap.js-widget_message_wrap') as $index => $messageDiv) {
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$this->itemTitle = '';
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$this->enclosures = array();
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$item = array();
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$item['uri'] = $this->processUri($messageDiv);
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$item['content'] = html_entity_decode($this->processContent($messageDiv), ENT_QUOTES);
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$item['title'] = html_entity_decode($this->itemTitle, ENT_QUOTES);
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$item['timestamp'] = $this->processDate($messageDiv);
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$item['enclosures'] = $this->enclosures;
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$author = trim($messageDiv->find('a.tgme_widget_message_owner_name', 0)->plaintext);
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$item['author'] = html_entity_decode($author, ENT_QUOTES);
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$this->items[] = $item;
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}
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$this->items = array_reverse($this->items);
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}
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public function getURI() {
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if (!is_null($this->getInput('username'))) {
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return self::URI . '/s/' . $this->processUsername();
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}
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return parent::getURI();
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}
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public function getName() {
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if (!empty($this->feedName)) {
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return $this->feedName . ' - Telegram';
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}
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return parent::getName();
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}
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private function processUsername() {
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if (substr($this->getInput('username'), 0, 1) === '@') {
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return substr($this->getInput('username'), 1);
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}
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return $this->getInput('username');
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}
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private function processUri($messageDiv) {
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return $messageDiv->find('a.tgme_widget_message_date', 0)->href;
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}
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private function processContent($messageDiv) {
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$message = '';
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if ($messageDiv->find('div.tgme_widget_message_forwarded_from', 0)) {
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$message = $messageDiv->find('div.tgme_widget_message_forwarded_from', 0)->innertext . '<br><br>';
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}
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if ($messageDiv->find('a.tgme_widget_message_reply', 0)) {
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$message = $this->processReply($messageDiv);
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}
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if ($messageDiv->find('div.tgme_widget_message_sticker_wrap', 0)) {
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$message .= $this->processSticker($messageDiv);
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}
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if ($messageDiv->find('div.tgme_widget_message_poll', 0)) {
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$message .= $this->processPoll($messageDiv);
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}
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if ($messageDiv->find('video', 0)) {
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$message .= $this->processVideo($messageDiv);
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}
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if ($messageDiv->find('a.tgme_widget_message_photo_wrap', 0)) {
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$message .= $this->processPhoto($messageDiv);
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}
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if ($messageDiv->find('a.not_supported', 0)) {
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$message .= $this->processNotSupported($messageDiv);
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}
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if ($messageDiv->find('div.tgme_widget_message_text.js-message_text', 0)) {
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$message .= $messageDiv->find('div.tgme_widget_message_text.js-message_text', 0);
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$this->itemTitle = $this->ellipsisTitle(
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$messageDiv->find('div.tgme_widget_message_text.js-message_text', 0)->plaintext
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);
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}
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if ($messageDiv->find('a.tgme_widget_message_link_preview', 0)) {
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$message .= $this->processLinkPreview($messageDiv);
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}
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return $message;
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}
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private function processReply($messageDiv) {
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$reply = $messageDiv->find('a.tgme_widget_message_reply', 0);
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return <<<EOD
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<blockquote>{$reply->find('span.tgme_widget_message_author_name', 0)->plaintext}<br>
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{$reply->find('div.tgme_widget_message_text', 0)->innertext}
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<a href="{$reply->href}">{$reply->href}</a></blockquote><hr>
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EOD;
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}
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private function processSticker($messageDiv) {
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if (empty($this->itemTitle)) {
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$this->itemTitle = '@' . $this->processUsername() . ' posted a sticker';
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}
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$stickerDiv = $messageDiv->find('div.tgme_widget_message_sticker_wrap', 0);
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preg_match($this->backgroundImageRegex, $stickerDiv->find('i', 0)->style, $sticker);
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$this->enclosures[] = $sticker[1];
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return <<<EOD
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<a href="{$stickerDiv->children(0)->herf}"><img src="{$sticker[1]}"></a>
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EOD;
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}
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private function processPoll($messageDiv) {
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$poll = $messageDiv->find('div.tgme_widget_message_poll', 0);
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$title = $poll->find('div.tgme_widget_message_poll_question', 0)->plaintext;
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$type = $poll->find('div.tgme_widget_message_poll_type', 0)->plaintext;
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if (empty($this->itemTitle)) {
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$this->itemTitle = $title;
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}
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$pollOptions = '<ul>';
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foreach ($poll->find('div.tgme_widget_message_poll_option') as $option) {
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$pollOptions .= '<li>' . $option->children(0)->plaintext . ' - ' .
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$option->find('div.tgme_widget_message_poll_option_text', 0)->plaintext . '</li>';
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}
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$pollOptions .= '</ul>';
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return <<<EOD
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{$title}<br><small>$type</small><br>{$pollOptions}
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EOD;
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}
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private function processLinkPreview($messageDiv) {
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$image = '';
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$title = '';
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$site = '';
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$description = '';
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$preview = $messageDiv->find('a.tgme_widget_message_link_preview', 0);
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if (trim($preview->innertext) === '') {
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return '';
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}
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if($preview->find('i', 0) &&
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preg_match($this->backgroundImageRegex, $preview->find('i', 0)->style, $photo)) {
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$image = '<img src="' . $photo[1] . '"/>';
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$this->enclosures[] = $photo[1];
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}
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if ($preview->find('div.link_preview_title', 0)) {
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$title = $preview->find('div.link_preview_title', 0)->plaintext;
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}
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if ($preview->find('div.link_preview_site_name', 0)) {
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$site = $preview->find('div.link_preview_site_name', 0)->plaintext;
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}
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if ($preview->find('div.link_preview_description', 0)) {
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$description = $preview->find('div.link_preview_description', 0)->plaintext;
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}
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return <<<EOD
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<blockquote><a href="{$preview->href}">$image</a><br><a href="{$preview->href}">
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{$title} - {$site}</a><br>{$description}</blockquote>
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EOD;
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}
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private function processVideo($messageDiv) {
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if (empty($this->itemTitle)) {
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$this->itemTitle = '@' . $this->processUsername() . ' posted a video';
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}
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if ($messageDiv->find('i.tgme_widget_message_video_thumb')) {
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preg_match($this->backgroundImageRegex, $messageDiv->find('i.tgme_widget_message_video_thumb', 0)->style, $photo);
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} elseif ($messageDiv->find('i.link_preview_video_thumb')) {
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preg_match($this->backgroundImageRegex, $messageDiv->find('i.link_preview_video_thumb', 0)->style, $photo);
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}
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$this->enclosures[] = $photo[1];
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return <<<EOD
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<video controls="" poster="{$photo[1]}" preload="none">
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<source src="{$messageDiv->find('video', 0)->src}" type="video/mp4">
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</video>
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EOD;
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}
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private function processPhoto($messageDiv) {
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if (empty($this->itemTitle)) {
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$this->itemTitle = '@' . $this->processUsername() . ' posted a photo';
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}
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$photos = '';
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foreach ($messageDiv->find('a.tgme_widget_message_photo_wrap') as $photoWrap) {
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preg_match($this->backgroundImageRegex, $photoWrap->style, $photo);
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$this->enclosures[] = $photo[1];
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$photos .= <<<EOD
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<a href="{$photoWrap->href}"><img src="{$photo[1]}"/></a><br>
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EOD;
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}
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return $photos;
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}
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private function processNotSupported($messageDiv) {
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if (empty($this->itemTitle)) {
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$this->itemTitle = '@' . $this->processUsername() . ' posted a video';
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}
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if ($messageDiv->find('i.tgme_widget_message_video_thumb')) {
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preg_match($this->backgroundImageRegex, $messageDiv->find('i.tgme_widget_message_video_thumb', 0)->style, $photo);
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} elseif ($messageDiv->find('i.link_preview_video_thumb')) {
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preg_match($this->backgroundImageRegex, $messageDiv->find('i.link_preview_video_thumb', 0)->style, $photo);
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}
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$this->enclosures[] = $photo[1];
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return <<<EOD
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<a href="{$messageDiv->find('a.not_supported', 0)->href}">
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{$messageDiv->find('div.message_media_not_supported_label', 0)->innertext}<br><br>
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{$messageDiv->find('span.message_media_view_in_telegram', 0)->innertext}<br><br>
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<img src="{$photo[1]}"/></a>
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EOD;
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}
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private function processDate($messageDiv) {
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$messageMeta = $messageDiv->find('span.tgme_widget_message_meta', 0);
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return $messageMeta->find('time', 0)->datetime;
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}
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private function ellipsisTitle($text) {
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$length = 100;
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if (strlen($text) > $length) {
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$text = explode('<br>', wordwrap($text, $length, '<br>'));
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return $text[0] . '...';
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}
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return $text;
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}
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}
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