Created
May 24, 2022 02:20
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Geolocation based weather rendered on-demand at the edge with Cloudflare workers
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| addEventListener('fetch', event => { | |
| event.respondWith(handleRequest(event.request)); | |
| }); | |
| async function handleRequest(request) { | |
| // https://api.weather.gov/points/38.8894,-77.0352 | |
| const { latitude, longitude } = request.cf; | |
| const headers = { | |
| 'content-type': 'application/json', | |
| 'User-Agent': ('landro.dev', '[email protected]') | |
| } | |
| const weatherLocationResponse = await fetch( | |
| `https://api.weather.gov/points/${latitude},${longitude}`, { headers: headers } | |
| ); | |
| console.log(weatherLocationResponse) | |
| const weatherLocationData = await weatherLocationResponse.json(); | |
| const forecastResponse = await fetch( | |
| weatherLocationData.properties.forecast, { headers: headers } | |
| ); | |
| const forecastData = await forecastResponse.json(); | |
| const forecast = forecastData.properties.periods; | |
| function iconHelper(shortForecastString) { | |
| if (shortForecastString.includes("Snow")) | |
| return '🌨'; | |
| if (shortForecastString.includes("thunderstorms")) | |
| return '⛈'; | |
| if (shortForecastString.includes("Partly Cloudy")) | |
| return '🌤'; | |
| if (shortForecastString.includes("Cloud")) | |
| return '☁️'; | |
| if (shortForecastString.includes("Light Rain")) | |
| return '🌦'; | |
| if (shortForecastString.includes("Rain")) | |
| return '🌧'; | |
| return '☀️'; | |
| } | |
| let html = ` | |
| <html> | |
| <head> | |
| <title>Geolocation: Weather</title> | |
| </head> | |
| <body> | |
| <style> | |
| body { | |
| padding: 6em; | |
| font-family: sans-serif; | |
| } | |
| h1 { | |
| color: #f6821f; | |
| } | |
| .header { | |
| grid-area: header; | |
| margin-bottom: 0; | |
| } | |
| .icon { | |
| grid-area: icon; | |
| font-size: 3em; | |
| font-style: normal; | |
| } | |
| .detailforecast { | |
| grid-area: detailforecast; | |
| line-height: 1.4; | |
| max-width: 500px; | |
| } | |
| .day { | |
| display: grid; | |
| grid-gap: 10px; | |
| grid-template-columns: 3.2em 3fr; | |
| grid-template-areas: | |
| "header header" | |
| "icon detailforecast"; | |
| margin-bottom: 1.2em; | |
| } | |
| </style> | |
| <div id="container"> | |
| <h1>Weather in ${weatherLocationData.properties.relativeLocation.properties.city}, ${weatherLocationData.properties.relativeLocation.properties.state}</h1> | |
| <main> | |
| <section> | |
| ${forecast.map(day => ` | |
| <div class="day"> | |
| <h3 class="header">${day.name}</h3> | |
| <i class="icon">${iconHelper(day.shortForecast)}</i> | |
| <span class="detailforecast">${day.detailedForecast}</span> | |
| </div> | |
| `).join(' ')} | |
| </section> | |
| </div> | |
| </body>`; | |
| return new Response(html, { | |
| headers: { | |
| 'content-type': 'text/html; charset=UTF-8;', | |
| }, | |
| }); | |
| } |
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