67 lines
3.4 KiB
PHP
67 lines
3.4 KiB
PHP
<?php
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namespace App\Services;
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use App\Models\Articles;
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final class ArticleRecommendations
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{
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public const SLOT = '<!-- fna-airport-recommendations -->';
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public static function providers(): array
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{
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if (! config('airport_recommendations.enabled')) return [];
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$providers = array_filter(config('airport_recommendations.providers', []), fn ($p) =>
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($p['enabled'] ?? false) && filter_var($p['url'] ?? '', FILTER_VALIDATE_URL)
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&& in_array(parse_url($p['url'], PHP_URL_SCHEME), ['https', 'http'], true));
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uasort($providers, fn ($a, $b) => ($a['order'] ?? 0) <=> ($b['order'] ?? 0));
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return $providers;
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}
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/** Presentation only: article storage, API receipts and subscription bytes stay intact. */
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public static function prepare(Articles $article): array
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{
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$html = $article->sContent ?? '';
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$category = $article->oCategory;
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$slug = $category?->sSlug;
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$scope = in_array($slug, ['freenode', 'shadowrocketids', 'advanced', 'client'], true)
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|| $category?->oParent?->sSlug === 'client';
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$enabled = $scope && self::providers() !== [];
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if (! $enabled) return ['body' => $html, 'enabled' => false, 'inline' => false];
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$inline = false;
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if (in_array($slug, ['freenode', 'shadowrocketids'], true)) {
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// Match the known legacy heading and its own Fuyun link, bounded by the next heading.
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if (preg_match('~(?:<p\b[^>]*>\s*)?<h[2-6]\b[^>]*>\s*机场推荐\s*[-—－:：]*\s*福云\s*[:：]?\s*</h[2-6]>~u', $html, $head, PREG_OFFSET_CAPTURE)) {
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$start = $head[0][1];$from = $start + strlen($head[0][0]);
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$tail = substr($html, $from);
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if (preg_match('~<h[1-6]\b~i', $tail, $next, PREG_OFFSET_CAPTURE)) $tail = substr($tail, 0, $next[0][1]);
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preg_match_all('~<a\b[^>]*>.*?</a>~si', $tail, $links, PREG_OFFSET_CAPTURE);
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foreach ($links[0] as [$link, $offset]) {
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$text = html_entity_decode(strip_tags($link), ENT_QUOTES | ENT_HTML5, 'UTF-8');
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if (! str_contains($text, '机场官网') || ! str_contains($text, '福云')) continue;
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$end = $from + $offset + strlen($link);
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if (preg_match('~\A(?:\s|</(?:b|strong|p)>)*~i', substr($html, $end), $closing)) $end += strlen($closing[0]);
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$html = substr($html, 0, $start).self::SLOT.substr($html, $end);
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$inline = true;
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break;
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}
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}
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}
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if ($slug === 'advanced') {
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$anchor = '#'.config('airport_recommendations.anchor');
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if (! str_contains($html, $anchor)) {
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$jump = '<p class="airport-recommendation-jump">如果需要更稳定的线路，可以从文末的<a href="'.e($anchor).'">机场推荐</a>中选择。</p>';
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$inserted = false;
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$html = preg_replace_callback('~<p\b[^>]*>.*?</p>~si', function ($m) use (&$inserted, $jump) {
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if ($inserted || ! preg_match('/免费节点|订阅|稳定|机场|线路/u', strip_tags($m[0]))) return $m[0];
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$inserted = true;
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return $m[0].$jump;
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}, $html);
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if (! $inserted) $html .= $jump;
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}
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}
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return ['body' => $html, 'enabled' => true, 'inline' => $inline];
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}
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}
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