/** * This val will create a daily weather email service. * It uses the OpenWeatherMap API to fetch weather data and the Val Town email API to send emails. * The val will be triggered daily using a cron job. */ import { email } from "https://esm.town/v/std/email"; import { OpenAI } from "https://esm.town/v/std/openai"; const OPENWEATHERMAP_API_KEY = Deno.env.get("WEATHER_API_KEY"); const USER_EMAIL = Deno.env.get("USER_EMAIL"); const CITY = "Córdoba, España"; // Change this to your desired city async function getWeatherData() { const response = await fetch( `https://api.openweathermap.org/data/2.5/weather?q=${CITY}&appid=${OPENWEATHERMAP_API_KEY}&units=metric`, ); return await response.json(); } async function generateEmailContent(weatherData) { const openai = new OpenAI(); const completion = await openai.chat.completions.create({ messages: [ { role: "system", content: "You are a helpful assistant that creates engaging weather reports." }, { role: "user", content: `Create a brief, friendly weather report for ${CITY} based on this data: ${ JSON.stringify(weatherData) }. Include the temperature, weather conditions, and a fun fact or tip related to the weather.`, }, ], model: "gpt-4o-mini", max_tokens: 150, }); return completion.choices[0].message.content; } async function sendWeatherEmail() { const weatherData = await getWeatherData(); const emailContent = await generateEmailContent(weatherData); await email.send({ to: USER_EMAIL, subject: `Daily Weather Report for ${CITY}`, text: emailContent, }); } export default async function server(req: Request): Promise { if (req.headers.get("User-Agent")?.includes("valtown-cron")) { await sendWeatherEmail(); return new Response("Weather email sent successfully!"); } return new Response( ` Daily Weather Email Service

Daily Weather Email Service

This service sends a daily weather report for ${CITY} to ${USER_EMAIL}.

The email includes:

Current temperature
Weather conditions
A fun fact or tip related to the weather

The service runs automatically every day. No action is required on this page.

`, { headers: { "Content-Type": "text/html" }, }, ); } // To set up the daily cron job, use the following Val Town cron expression: // 0 8 * * * // This will run the val every day at 8:00 AM UTC.

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