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school_compare/nextjs-app/lib/suggest.ts
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/**
* Client for /api/suggest.
*
* No `cache: "no-store"`. The compare modal's search uses it, and copying that
* here would discard both the browser cache and the ETag 304s the backend's
* CacheAndETagMiddleware already provides — on the one endpoint where prefix
* queries repeat most.
*/
export interface Suggestion {
urn: number;
school_name: string;
local_authority: string;
postcode: string;
phase: string;
school_type: string;
}
/** Below this the response is thousands of schools and worth no round trip. */
export const SUGGEST_MIN_QUERY = 2;
const API = process.env.NEXT_PUBLIC_API_URL || '/api';
/** Suggestions for `q`. Never throws: no suggestions is a fine outcome. */
export async function fetchSuggestions(
q: string, signal?: AbortSignal,
): Promise<Suggestion[]> {
if (q.trim().length < SUGGEST_MIN_QUERY) return [];
try {
const res = await fetch(`${API}/suggest?q=${encodeURIComponent(q.trim())}`,
{ signal });
if (!res.ok) return [];
const body = await res.json();
return body.suggestions ?? [];
} catch {
// Includes AbortError, which is the normal path on every keystroke.
return [];
}
}