export class Reservation {
constructor(private state: DurableObjectState, private env: Env) {}

// POST /schedule  ⇒ programa
async fetch(req: Request) {
const url = new URL(req.url);
if (url.pathname === "/schedule") {
const { className, epoch } = await req.json();
await this.state.storage.put("className", className);
await this.state.setAlarm(epoch);            // precisión al segundo
return new Response("ok");
}
if (url.pathname === "/cancel") {
await this.state.storage.deleteAll();
await this.state.setAlarm();                 // cancela
return new Response("canceled");
}
return new Response("404", { status: 404 });
}

// se dispara exactamente en `epoch`
async alarm() {
const className = await this.state.storage.get("className");
await fetch(`${this.env.VERCEL_URL}/reserva`, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ className }),
});
await this.state.storage.deleteAll();          // limpia
}
}
export default {
fetch(req: Request, env: Env) {
const id = env.RESERVATION.idFromName("singleton");
return env.RESERVATION.get(id).fetch(req);
},
};