fix #29 : envoyer le lien magique par email (envoyer_mail_smtp)
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Cedric Abonnel
@@ -0,0 +1,185 @@
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<?php
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declare(strict_types=1);
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class FeedFetcher
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{
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private const MIN_TTL = 900; // 15 min
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private const MAX_TTL = 86400; // 24 h
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public function __construct(private string $cacheDir)
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{
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}
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/**
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* Retourne les items du feed (depuis le cache si valide, sinon refetch).
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* @return array{items: array, feed_title: string, fetched_at: int, ttl: int}|null
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*/
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public function get(string $url): ?array
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{
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$cached = $this->cacheRead($url);
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if ($cached !== null && time() < (int)$cached['fetched_at'] + (int)$cached['ttl']) {
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return $cached;
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}
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return $this->fetch($url);
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}
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/** Force le refetch et met le cache à jour. */
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public function fetch(string $url): ?array
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{
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$ch = curl_init($url);
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curl_setopt_array($ch, [
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_FOLLOWLOCATION => true,
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CURLOPT_MAXREDIRS => 5,
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CURLOPT_TIMEOUT => 10,
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CURLOPT_USERAGENT => 'varlog/1.0 FeedFetcher (+' . (defined('APP_URL') ? APP_URL : '') . ')',
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CURLOPT_HEADER => true,
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]);
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$raw = curl_exec($ch);
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$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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$hSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
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curl_close($ch);
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if ($raw === false || !is_int($httpCode) || $httpCode < 200 || $httpCode >= 400) {
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return null;
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}
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$headers = substr((string)$raw, 0, $hSize);
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$body = substr((string)$raw, $hSize);
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libxml_use_internal_errors(true);
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$xml = simplexml_load_string($body);
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libxml_clear_errors();
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if ($xml === false) {
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return null;
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}
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$isAtom = ($xml->getName() === 'feed');
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$items = $isAtom ? $this->parseAtom($xml) : $this->parseRss($xml);
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$feedTitle = $isAtom
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? (string)($xml->title ?? '')
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: (string)($xml->channel->title ?? '');
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$ttl = $this->resolveTtl($xml, $isAtom, $headers);
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$data = [
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'feed_title' => $feedTitle,
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'fetched_at' => time(),
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'ttl' => $ttl,
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'items' => $items,
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];
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$this->cacheWrite($url, $data);
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return $data;
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}
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// ------------------------------------------------------------------ //
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private function parseRss(\SimpleXMLElement $xml): array
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{
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$items = [];
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foreach ($xml->channel->item ?? [] as $item) {
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$date = (string)($item->pubDate ?? '');
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$items[] = [
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'title' => trim((string)($item->title ?? '')),
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'url' => trim((string)($item->link ?? '')),
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'summary' => $this->cleanSummary((string)($item->description ?? '')),
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'date' => $date !== '' ? (int)strtotime($date) : 0,
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'author' => trim((string)($item->author ?? '')),
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];
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}
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return $this->sortItems($items);
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}
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private function parseAtom(\SimpleXMLElement $xml): array
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{
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$ns = $xml->getNamespaces(true);
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$items = [];
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foreach ($xml->entry ?? [] as $entry) {
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$url = '';
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foreach ($entry->link ?? [] as $link) {
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$rel = (string)($link['rel'] ?? 'alternate');
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if ($rel === 'alternate' || $rel === '') {
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$url = (string)($link['href'] ?? '');
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break;
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}
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}
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$date = (string)($entry->published ?? $entry->updated ?? '');
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$author = (string)($entry->author->name ?? '');
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$summary = (string)($entry->summary ?? $entry->content ?? '');
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$items[] = [
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'title' => trim((string)($entry->title ?? '')),
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'url' => trim($url),
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'summary' => $this->cleanSummary($summary),
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'date' => $date !== '' ? (int)strtotime($date) : 0,
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'author' => trim($author),
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];
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}
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return $this->sortItems($items);
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}
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private function cleanSummary(string $html): string
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{
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$text = strip_tags($html);
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$text = preg_replace('/\s+/', ' ', $text) ?? $text;
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return mb_strimwidth(trim($text), 0, 200, '…');
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}
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private function sortItems(array $items): array
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{
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usort($items, static fn ($a, $b) => $b['date'] <=> $a['date']);
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return $items;
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}
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private function resolveTtl(\SimpleXMLElement $xml, bool $isAtom, string $headers): int
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{
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// 1. TTL déclaré dans le flux RSS (<ttl> en minutes)
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if (!$isAtom) {
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$rssttl = (int)($xml->channel->ttl ?? 0);
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if ($rssttl > 0) {
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return $this->clampTtl($rssttl * 60);
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}
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}
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// 2. Cache-Control: max-age depuis les headers HTTP
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if (preg_match('/max-age=(\d+)/i', $headers, $m)) {
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return $this->clampTtl((int)$m[1]);
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}
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// 3. Valeur par défaut : 1 heure
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return 3600;
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}
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private function clampTtl(int $seconds): int
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{
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return max(self::MIN_TTL, min(self::MAX_TTL, $seconds));
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}
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// ------------------------------------------------------------------ //
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private function cachePath(string $url): string
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{
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return $this->cacheDir . '/' . md5($url) . '.json';
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}
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private function cacheRead(string $url): ?array
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{
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$path = $this->cachePath($url);
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if (!file_exists($path)) {
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return null;
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}
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$data = json_decode((string)file_get_contents($path), true);
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return is_array($data) ? $data : null;
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}
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private function cacheWrite(string $url, array $data): void
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{
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if (!is_dir($this->cacheDir)) {
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mkdir($this->cacheDir, 0755, true);
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}
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file_put_contents(
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$this->cachePath($url),
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json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES)
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);
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}
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}
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