// This approach uses the Sunset and Sunrise API to get sunset times for New York, // and creates a simple form to generate a calendar of events occurring before sunset. async function server(request: Request): Promise { try { const url = new URL(request.url); if (url.pathname === "/generate-calendar") { const action = url.searchParams.get("action"); const minutesBefore = parseInt(url.searchParams.get("minutesBefore")); const endDate = new Date(url.searchParams.get("endDate")); if (!action || isNaN(minutesBefore) || isNaN(endDate.getTime())) { return new Response("Invalid input parameters", { status: 400 }); } console.log(`Generating calendar for action: ${action}, minutes before: ${minutesBefore}, end date: ${endDate}`); const events = await generateSunsetEvents(action, minutesBefore, endDate); console.log(`Generated ${events.length} events`); const { createEvents } = await import("https://esm.sh/ics@3.1.0"); const { error, value } = createEvents(events); if (error) { console.error("Error creating events:", error); return new Response("Error generating calendar", { status: 500 }); } if (!value) { console.error("No value returned from createEvents"); return new Response("Error generating calendar", { status: 500 }); } return new Response(value, { headers: { "Content-Type": "text/calendar", "Content-Disposition": "attachment; filename=sunset_actions.ics" }, }); } return new Response(` Sunset Action Calendar

Sunset Action Calendar

`, { headers: { "content-type": "text/html" }, }); } catch (error) { console.error("Unexpected error:", error); return new Response("An unexpected error occurred", { status: 500 }); } } async function generateSunsetEvents(action: string, minutesBefore: number, endDate: Date) { const events = []; let currentDate = new Date(); while (currentDate <= endDate) { try { const sunsetTime = await getSunsetTime(currentDate); const eventTime = new Date(sunsetTime.getTime() - minutesBefore * 60000); events.push({ start: [eventTime.getFullYear(), eventTime.getMonth() + 1, eventTime.getDate(), eventTime.getHours(), eventTime.getMinutes()], duration: { minutes: 30 }, title: action, description: `${action} ${minutesBefore} minutes before sunset`, }); currentDate.setDate(currentDate.getDate() + 1); } catch (error) { console.error(`Error generating event for ${currentDate}:`, error); currentDate.setDate(currentDate.getDate() + 1); } } return events; } async function getSunsetTime(date: Date): Promise { const formattedDate = `${date.getFullYear()}-${(date.getMonth() + 1).toString().padStart(2, '0')}-${date.getDate().toString().padStart(2, '0')}`; const response = await fetch(`https://api.sunrise-sunset.org/json?lat=40.7128&lng=-74.0060&date=${formattedDate}&formatted=0`); if (!response.ok) { throw new Error(`HTTP error! status: ${response.status}`); } const data = await response.json(); if (!data.results || !data.results.sunset) { throw new Error("Invalid response from sunset API"); } return new Date(data.results.sunset); } export default server;

sunsetNYCalendar