45 lines
1.9 KiB
TypeScript
45 lines
1.9 KiB
TypeScript
import { NextResponse } from "next/server";
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import { isImgwNoProductsResponse, readImgwResponseBody } from "@/lib/imgw-empty-response";
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const ALLOWED_PATHS = new Set(["synop", "hydro", "meteo", "warningsmeteo", "warningshydro", "product"]);
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const IMGW_BASE_URL = "https://danepubliczne.imgw.pl/api/data";
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const USER_AGENT = "wtr./1.0 (weather data proxy)";
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export async function GET(_: Request, context: { params: Promise<{ path: string[] }> }) {
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const { path } = await context.params;
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const [resource, variant, value] = path;
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const isAllowedSynopDetail = resource === "synop" && variant === "id" && Boolean(value) && path.length === 3;
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const isAllowedCollection = ALLOWED_PATHS.has(resource) && path.length === 1;
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if (!isAllowedSynopDetail && !isAllowedCollection) {
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return NextResponse.json({ error: "Nieobsługiwana ścieżka IMGW." }, { status: 404 });
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}
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const upstreamPath = path.map(encodeURIComponent).join("/");
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try {
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const response = await fetch(`${IMGW_BASE_URL}/${upstreamPath}`, {
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next: { revalidate: 300 },
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headers: { Accept: "application/json", "User-Agent": USER_AGENT },
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});
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if (!response.ok) {
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const body = await readImgwResponseBody(response);
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if (
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(resource === "warningsmeteo" || resource === "warningshydro") &&
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response.status === 404 &&
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isImgwNoProductsResponse(body.json)
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) {
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return NextResponse.json([], {
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headers: { "Cache-Control": "public, s-maxage=300, stale-while-revalidate=600" },
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});
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}
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return NextResponse.json({ error: "IMGW API jest chwilowo niedostępne." }, { status: response.status });
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}
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const data: unknown = await response.json();
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return NextResponse.json(data, {
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headers: { "Cache-Control": "public, s-maxage=300, stale-while-revalidate=600" },
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});
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} catch {
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return NextResponse.json({ error: "Nie udało się połączyć z IMGW API." }, { status: 502 });
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}
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}
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