mirror of https://github.com/danoloan10/rss-bridge
343 lines
11 KiB
PHP
343 lines
11 KiB
PHP
<?php
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class RedditBridge extends BridgeAbstract
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{
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const MAINTAINER = 'dawidsowa';
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const NAME = 'Reddit Bridge';
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const URI = 'https://www.reddit.com';
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const DESCRIPTION = 'Return hot submissions from Reddit';
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const PARAMETERS = [
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'global' => [
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'score' => [
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'name' => 'Minimal score',
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'required' => false,
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'type' => 'number',
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'exampleValue' => 100,
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'title' => 'Filter out posts with lower score'
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],
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'd' => [
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'name' => 'Sort By',
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'type' => 'list',
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'title' => 'Sort by new, hot, top or relevancy',
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'values' => [
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'Hot' => 'hot',
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'Relevance' => 'relevance',
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'New' => 'new',
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'Top' => 'top'
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],
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'defaultValue' => 'Hot'
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],
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'search' => [
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'name' => 'Keyword search',
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'required' => false,
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'exampleValue' => 'cats, dogs',
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'title' => 'Keyword search, separated by commas'
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]
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],
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'single' => [
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'r' => [
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'name' => 'SubReddit',
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'required' => true,
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'exampleValue' => 'selfhosted',
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'title' => 'SubReddit name'
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],
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'f' => [
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'name' => 'Flair',
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'required' => false,
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'exampleValue' => 'Proxy',
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'title' => 'Flair filter'
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]
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],
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'multi' => [
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'rs' => [
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'name' => 'SubReddits',
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'required' => true,
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'exampleValue' => 'selfhosted, php',
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'title' => 'SubReddit names, separated by commas'
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]
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],
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'user' => [
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'u' => [
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'name' => 'User',
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'required' => true,
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'exampleValue' => 'shwikibot',
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'title' => 'User name'
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],
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'comments' => [
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'type' => 'checkbox',
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'name' => 'Comments',
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'title' => 'Whether to return comments',
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'defaultValue' => false
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]
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]
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];
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public function collectData()
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{
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$cacheKey = 'reddit_rate_limit';
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if ($this->cache->get($cacheKey)) {
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throw new HttpException('429 Too Many Requests', 429);
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}
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try {
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$this->collectDataInternal();
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} catch (HttpException $e) {
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if ($e->getCode() === 429) {
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$this->cache->set($cacheKey, true, 60 * 16);
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}
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if ($e->getCode() === 403) {
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// 403 Forbidden
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// This can possibly mean that reddit has permanently blocked this server's ip address
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$this->cache->set($cacheKey, true, 60 * 61);
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}
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throw $e;
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}
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}
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private function collectDataInternal(): void
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{
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$user = false;
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$comments = false;
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$section = $this->getInput('d');
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switch ($this->queriedContext) {
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case 'single':
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$subreddits[] = $this->getInput('r');
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break;
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case 'multi':
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$subreddits = explode(',', $this->getInput('rs'));
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break;
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case 'user':
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$subreddits[] = $this->getInput('u');
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$user = true;
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$comments = $this->getInput('comments');
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break;
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}
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if (!($this->getInput('search') === '')) {
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$keywords = $this->getInput('search');
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$keywords = str_replace([',', ' '], '%20', $keywords);
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$keywords = $keywords . '%20';
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} else {
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$keywords = '';
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}
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if (!empty($this->getInput('f')) && $this->queriedContext == 'single') {
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$flair = $this->getInput('f');
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$flair = str_replace(' ', '%20', $flair);
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$flair = 'flair%3A%22' . $flair . '%22%20';
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} else {
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$flair = '';
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}
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foreach ($subreddits as $subreddit) {
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$name = trim($subreddit);
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$url = self::URI
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. '/search.json?q='
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. $keywords
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. $flair
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. ($user ? 'author%3A' : 'subreddit%3A')
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. $name
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. '&sort='
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. $this->getInput('d')
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. '&include_over_18=on';
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$version = 'v0.0.1';
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$useragent = "rss-bridge $version (https://github.com/RSS-Bridge/rss-bridge)";
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$json = getContents($url, ['User-Agent: ' . $useragent]);
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$parsedJson = Json::decode($json, false);
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foreach ($parsedJson->data->children as $post) {
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if ($post->kind == 't1' && !$comments) {
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continue;
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}
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$data = $post->data;
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if ($data->score < $this->getInput('score')) {
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continue;
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}
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$item = [];
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$item['author'] = $data->author;
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$item['uid'] = $data->id;
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$item['timestamp'] = $data->created_utc;
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$item['uri'] = $this->encodePermalink($data->permalink);
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$item['categories'] = [];
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if ($post->kind == 't1') {
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$item['title'] = 'Comment: ' . $data->link_title;
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} else {
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$item['title'] = $data->title;
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$item['categories'][] = $data->link_flair_text;
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$item['categories'][] = $data->pinned ? 'Pinned' : null;
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$item['categories'][] = $data->spoiler ? 'Spoiler' : null;
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}
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$item['categories'][] = $data->over_18 ? 'NSFW' : null;
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$item['categories'] = array_filter($item['categories']);
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if ($post->kind == 't1') {
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// Comment
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$item['content']
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= htmlspecialchars_decode($data->body_html);
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} elseif ($data->is_self) {
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// Text post
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$item['content']
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= htmlspecialchars_decode($data->selftext_html);
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} elseif (isset($data->post_hint) && $data->post_hint == 'link') {
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// Link with preview
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if (isset($data->media)) {
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// todo: maybe switch on the type
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if (isset($data->media->oembed->html)) {
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// Reddit embeds content for some sites (e.g. Twitter)
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$embed = htmlspecialchars_decode($data->media->oembed->html);
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} else {
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$embed = '';
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}
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} else {
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$embed = '';
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}
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$item['content'] = $this->template(
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$data->url,
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$data->thumbnail,
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$data->domain
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) . $embed;
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} elseif (isset($data->post_hint) ? $data->post_hint == 'image' : false) {
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// Single image
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$item['content'] = $this->link(
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$this->encodePermalink($data->permalink),
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'<img src="' . $data->url . '" />'
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);
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} elseif ($data->is_gallery ?? false) {
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// Multiple images
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$images = [];
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foreach ($data->gallery_data->items as $media) {
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$id = $media->media_id;
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$type = $data->media_metadata->$id->m == 'image/gif' ? 'gif' : 'u';
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$src = $data->media_metadata->$id->s->$type;
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$images[] = '<figure><img src="' . $src . '"/></figure><br>';
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}
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$item['content'] = implode('', $images);
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} elseif ($data->is_video) {
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// Video
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// Higher index -> Higher resolution
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end($data->preview->images[0]->resolutions);
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$index = key($data->preview->images[0]->resolutions);
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$item['content'] = $this->template(
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$data->url,
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$data->preview->images[0]->resolutions[$index]->url,
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'Video'
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);
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} elseif (isset($data->media) ? $data->media->type == 'youtube.com' : false) {
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// Youtube link
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$item['content'] = $this->template(
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$data->url,
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$data->media->oembed->thumbnail_url,
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'YouTube'
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);
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} elseif (explode('.', $data->domain)[0] == 'self') {
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// Crossposted text post
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// TODO (optionally?) Fetch content of the original post.
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$item['content'] = $this->link(
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$this->encodePermalink($data->permalink),
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'Crossposted from r/'
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. explode('.', $data->domain)[1]
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);
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} else {
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// Link WITHOUT preview
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$item['content'] = $this->link($data->url, $data->domain);
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}
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$this->items[] = $item;
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}
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}
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// Sort the order to put the latest posts first, even for mixed subreddits
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usort($this->items, function ($a, $b) {
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return $a['timestamp'] < $b['timestamp'];
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});
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}
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public function getIcon()
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{
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return 'https://www.redditstatic.com/desktop2x/img/favicon/favicon-96x96.png';
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}
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public function getName()
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{
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if ($this->queriedContext == 'single') {
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return 'Reddit r/' . $this->getInput('r');
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} elseif ($this->queriedContext == 'user') {
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return 'Reddit u/' . $this->getInput('u');
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} else {
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return self::NAME;
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}
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}
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private function encodePermalink($link)
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{
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return self::URI . implode(
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'/',
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array_map('urlencode', explode('/', $link))
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);
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}
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private function template($href, $src, $caption)
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{
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return '<a href="' . $href . '"><figure><figcaption>'
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. $caption . '</figcaption><img src="'
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. $src . '"/></figure></a>';
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}
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private function link($href, $text)
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{
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return '<a href="' . $href . '">' . $text . '</a>';
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}
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public function detectParameters($url)
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{
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try {
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$urlObject = Url::fromString($url);
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} catch (UrlException $e) {
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return null;
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}
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$host = $urlObject->getHost();
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$path = $urlObject->getPath();
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$pathSegments = explode('/', $path);
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if ($host !== 'www.reddit.com' && $host !== 'old.reddit.com') {
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return null;
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}
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if ($pathSegments[1] == 'r') {
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return [
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'context' => 'single',
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'r' => $pathSegments[2],
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];
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} elseif ($pathSegments[1] == 'user') {
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return [
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'context' => 'user',
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'u' => $pathSegments[2],
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];
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} else {
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return null;
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}
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}
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}
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