/**
 * Marginalia Search backend — anti-SEO, free with "public" key.
 */

import { timeoutSignal, sanitizeError } from "../utils.js";
import { parseMarginalia } from "../../backends/parsers.js";
import type { SearchResult } from "../types.js";

export async function searchMarginalia(
	query: string,
	numResults: number,
	apiKey: string | undefined,
	signal?: AbortSignal,
): Promise<{ results: SearchResult[] }> {
	const key = apiKey || "public";
	const response = await fetch(
		`https://api2.marginalia-search.com/search?${new URLSearchParams({ query, count: String(Math.min(numResults, 100)) })}`,
		{
			signal: timeoutSignal(signal),
			headers: {
				"Accept": "application/json",
				"API-Key": key,
			},
		},
	);

	if (!response.ok) {
		const text = await response.text().catch(() => "");
		throw new Error(`Marginalia ${sanitizeError(response.status, text)}`);
	}

	const data = (await response.json()) as Record<string, unknown>;
	return { results: parseMarginalia(data, numResults) };
}