/**
 * `GET /api/v1/weather`.
 *
 * Always 200, always a body. A source that is down, misconfigured or absent
 * produces `synthetic: true` and a clear day — there is no failure mode here in
 * which the caller has to decide what to render, because the answer to "what is
 * the sky doing" is never allowed to be a 503.
 */

import type { FastifyInstance } from "fastify";
import { publicCache } from "../cache.ts";
import type { Services } from "../services.ts";

export function registerWeather(app: FastifyInstance, services: Services): void {
  app.get("/api/v1/weather", async (req, reply) => {
    const body = await services.weather.current();
    publicCache(req, reply, services.config.weather.ttlSeconds);
    return body;
  });
}