mirror of
https://github.com/direct-img/direct-img.link.git
synced 2026-03-16 18:51:01 +00:00
Feat: Add Bing Image Search fallback for empty results
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@@ -44,7 +44,6 @@ export async function onRequest(context) {
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"surreal-db": "rate_limit",
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};
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// First ensure namespace and database exist
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try {
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const initSql = `DEFINE NAMESPACE IF NOT EXISTS direct_img; USE NS direct_img; DEFINE DATABASE IF NOT EXISTS rate_limit;`;
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await fetch(`${env.SURREAL_URL}/sql`, {
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@@ -141,8 +140,14 @@ export async function onRequest(context) {
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return env.ASSETS.fetch(new Request(new URL("/bad.webp", url.origin)));
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};
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const imageUrls = await braveImageSearch(query, env.BRAVE_API_KEY);
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if (!imageUrls || imageUrls.length === 0) return await fail("Search Failed", `Brave API returned no results for: ${query}`, "question", 3);
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let imageUrls = await braveImageSearch(query, env.BRAVE_API_KEY);
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if (!imageUrls || imageUrls.length === 0) {
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context.waitUntil(notify(env, { title: "Brave Search Empty", message: `No results for: ${query}. Trying Bing Fallback.`, tags: "warning,mag", priority: 3 }));
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imageUrls = await bingImageSearchFallback(query);
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}
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if (!imageUrls || imageUrls.length === 0) return await fail("Search Failed", `Both Brave and Bing returned no results for: ${query}`, "question", 3);
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const GLOBAL_DEADLINE = Date.now() + 20000;
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let imgResult = null;
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@@ -212,6 +217,36 @@ async function braveImageSearch(query, apiKey) {
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return data.results?.map(r => r.properties?.url || r.thumbnail?.src).filter(url => !!url) || null;
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}
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async function bingImageSearchFallback(query) {
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try {
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const res = await fetch(`https://www.bing.com/images/search?q=${encodeURIComponent(query)}&safesearch=moderate`, {
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headers: {
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"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36",
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"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"
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}
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});
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if (!res.ok) return null;
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const html = await res.text();
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const urls = [];
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// Bing encodes the image payload inside HTML entity attributes and script tags
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const regex1 = /"murl":"(https:[^&"]+)"/g;
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const regex2 = /"murl":"(https:[^"]+)"/g;
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let match;
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while ((match = regex1.exec(html)) !== null) {
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urls.push(match[1].replace(/\\\//g, '/'));
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}
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while ((match = regex2.exec(html)) !== null) {
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urls.push(match[1].replace(/\\\//g, '/'));
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}
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return urls.length > 0 ? [...new Set(urls)] : null;
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} catch (err) {
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return null;
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}
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}
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async function fetchImage(imageUrl, timeoutMs = 5000) {
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try {
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const res = await fetch(imageUrl, {
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