/**
 * Brave Search backend — metered billing, needs API key.
 */

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

export async function searchBrave(
	query: string,
	numResults: number,
	apiKey: string,
	signal?: AbortSignal,
): Promise<{ results: SearchResult[] }> {
	const params = new URLSearchParams({ q: query, count: String(Math.min(numResults, 20)) });
	const response = await fetch(`https://api.search.brave.com/res/v1/web/search?${params}`, {
		method: "GET",
		headers: {
			"Accept": "application/json",
			"Accept-Encoding": "gzip",
			"X-Subscription-Token": apiKey,
		},
		signal: timeoutSignal(signal),
	});
	if (!response.ok) {
		const text = await response.text().catch(() => "");
		throw new Error(`Brave ${sanitizeError(response.status, text)}`);
	}
	const data = (await response.json()) as Record<string, unknown>;
	return { results: parseBrave(data, numResults) };
}