2024-11-21 00:32:08 +00:00
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<?php
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// Configuration
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$jsonUrl = "https://indieblog.page/export"; // Source JSON URL
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$rssFile = "/app/data/public/indieblog_feed.xml"; // RSS output file
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$cacheFile = "/app/data/cache/indieblog_cache.txt"; // Cache for processed IDs
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$recentCutoff = time() - 86400; // Articles published within the last 24 hours
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// Ensure necessary directories exist
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@mkdir(dirname($rssFile), 0777, true);
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@mkdir(dirname($cacheFile), 0777, true);
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// Load JSON data
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$jsonData = @file_get_contents($jsonUrl);
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if (!$jsonData) {
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die("Error: Unable to fetch JSON from $jsonUrl\n");
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}
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// Decode JSON into an array
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$data = json_decode($jsonData, true);
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if (!$data) {
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die("Error: Invalid JSON data from $jsonUrl\n");
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}
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// Load cache of already processed IDs
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$includedIds = file_exists($cacheFile) ? file($cacheFile, FILE_IGNORE_NEW_LINES) : [];
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// Filter recent items
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$recentItems = array_filter($data, function ($item) use ($recentCutoff, $includedIds) {
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return isset($item['published'], $item['itemid']) &&
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$item['published'] >= $recentCutoff &&
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!in_array($item['itemid'], $includedIds);
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});
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// Sort items by publication date (newest first)
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usort($recentItems, fn($a, $b) => $b['published'] <=> $a['published']);
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// Generate RSS feed
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$rss = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"></rss>');
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$channel = $rss->addChild('channel');
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$channel->addChild('title', 'IndieBlog Feed (Recent)');
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$channel->addChild('link', 'https://indieblog.page/');
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$channel->addChild('description', 'RSS feed of articles published in the last 24 hours');
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$channel->addChild('language', 'en');
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// Add recent items to RSS feed
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$newEntries = [];
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foreach ($recentItems as $item) {
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$rssItem = $channel->addChild('item');
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$rssItem->addChild('title', htmlspecialchars($item['itemtitle'] ?? 'No title'));
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$rssItem->addChild('link', htmlspecialchars($item['itemurl'] ?? ''));
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$rssItem->addChild('pubDate', date(DATE_RSS, $item['published']));
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2024-11-22 11:06:24 +00:00
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// Fetch original RSS feed content for the entry
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$originalContent = fetchOriginalContent($item['itemurl']);
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$rssItem->addChild('description', htmlspecialchars($originalContent ?? $item['feedtitle'] ?? 'No content'));
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2024-11-21 00:32:08 +00:00
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$newEntries[] = $item['itemid'];
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}
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// Update cache with newly processed IDs
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if (!empty($newEntries)) {
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file_put_contents($cacheFile, implode("\n", array_merge($includedIds, $newEntries)));
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}
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// Save RSS feed
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$rss->asXML($rssFile);
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2024-11-22 11:06:24 +00:00
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/**
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* Fetches the original content from a given URL.
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*
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* @param string $url The URL of the article to fetch.
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* @return string|null The extracted content, or null if unavailable.
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*/
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function fetchOriginalContent(string $url): ?string
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{
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$html = @file_get_contents($url);
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if (!$html) {
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return null;
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}
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// Extract content between <body> tags (basic extraction, adapt as needed)
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if (preg_match('/<body.*?>(.*?)<\/body>/si', $html, $matches)) {
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// Clean HTML content (strip tags, keep minimal formatting)
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return strip_tags($matches[1], '<p><br><a><strong><em>');
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}
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return null;
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}
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