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import { convert as convertHtmlToPlainText } from "html-to-text";
import { strip as stripEmojis } from "node-emoji";
import { type SearxngSearchResult, SearxngService } from "searxng";
const searxng = new SearxngService({
baseURL: "http://127.0.0.1:8080",
defaultSearchParams: {
lang: "auto",
safesearch: 1,
format: "json",
},
});
export { processTextualResult, processGraphicalResult };
type SearchType = "text" | "images";
export async function fetchSearXNG(
query: string,
searchType: SearchType,
limit = 30,
) {
try {
if (searchType === "text") {
const { results } = await searxng.search(query, {
categories: ["general"],
});
const deduplicatedResults = deduplicateResults(results);
const textualResults = await Promise.all(
deduplicatedResults.slice(0, limit).map(processTextualResult),
);
return filterNullResults(textualResults);
}
const { results } = await searxng.search(query, {
categories: ["images", "videos"],
});
const deduplicatedResults = deduplicateResults(results);
const graphicalResults = await Promise.all(
deduplicatedResults.slice(0, limit).map(processGraphicalResult),
);
return filterNullResults(graphicalResults);
} catch (error) {
console.error(
"Error fetching search results:",
error instanceof Error ? error.message : error,
);
return [];
}
}
async function processGraphicalResult(result: SearxngSearchResult) {
const thumbnailSource =
result.category === "videos" ? result.thumbnail : result.thumbnail_src;
const sourceUrl =
result.category === "videos"
? result.iframe_src || result.url
: result.img_src;
try {
return [result.title, result.url, thumbnailSource, sourceUrl] as [
title: string,
url: string,
thumbnailSource: string,
sourceUrl: string,
];
} catch (error) {
console.warn(
`Failed to process ${result.category} result: ${result.url}`,
error instanceof Error ? error.message : error,
);
return null;
}
}
function processSnippet(snippet: string): string {
const processedSnippet = stripEmojis(
convertHtmlToPlainText(snippet, { wordwrap: false }).trim(),
{ preserveSpaces: true },
);
if (processedSnippet.startsWith("[data:image")) return "";
return processedSnippet;
}
async function processTextualResult(result: SearxngSearchResult) {
try {
if (!result.content) return null;
const title = convertHtmlToPlainText(result.title, {
wordwrap: false,
}).trim();
const snippet = processSnippet(result.content);
if (!title || !snippet) return null;
return [title, snippet, result.url] as [
title: string,
content: string,
url: string,
];
} catch (error) {
console.warn(
`Failed to process textual result: ${result.url}`,
error instanceof Error ? error.message : error,
);
return null;
}
}
function deduplicateResults(
results: SearxngSearchResult[],
): SearxngSearchResult[] {
const urls = new Set<string>();
return results.filter((result) => {
if (urls.has(result.url)) return false;
urls.add(result.url);
return true;
});
}
function filterNullResults<T>(results: (T | null)[]): T[] {
return results.filter(
(result): result is NonNullable<typeof result> => result !== null,
);
}
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