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Geolocation: Weather application

Fetch weather data from an API using the user's geolocation data.
export default {
async fetch(request) {
let endpoint = 'https://api.waqi.info/feed/geo:';
const token = ''; //Use a token from https://aqicn.org/api/
let html_style = `body{padding:6em; font-family: sans-serif;} h1{color:#f6821f}`;
let html_content = '<h1>Weather 🌦</h1>';
const latitude = request.cf.latitude;
const longitude = request.cf.longitude;
endpoint += `${latitude};${longitude}/?token=${token}`;
const init = {
headers: {
'content-type': 'application/json;charset=UTF-8',
},
};
const response = await fetch(endpoint, init);
const content = await response.json();
html_content += `<p>This is a demo using Workers geolocation data. </p>`;
html_content += `You are located at: ${latitude},${longitude}.</p>`;
html_content += `<p>Based off sensor data from <a href="${content.data.city.url}">${content.data.city.name}</a>:</p>`;
html_content += `<p>The AQI level is: ${content.data.aqi}.</p>`;
html_content += `<p>The N02 level is: ${content.data.iaqi.no2?.v}.</p>`;
html_content += `<p>The O3 level is: ${content.data.iaqi.o3?.v}.</p>`;
html_content += `<p>The temperature is: ${content.data.iaqi.t?.v}°C.</p>`;
let html = `
<!DOCTYPE html>
<head>
<title>Geolocation: Weather</title>
</head>
<body>
<style>${html_style}</style>
<div id="container">
${html_content}
</div>
</body>`;
return new Response(html, {
headers: {
'content-type': 'text/html;charset=UTF-8',
},
});
},
};
addEventListener('fetch', event => {
event.respondWith(handleRequest(event.request));
});
async function handleRequest(request) {
let endpoint = 'https://api.waqi.info/feed/geo:';
const token = ''; //Use a token from https://aqicn.org/api/
let html_style = `body{padding:6em; font-family: sans-serif;} h1{color:#f6821f}`;
let html_content = '<h1>Weather 🌦</h1>';
latitude = request.cf.latitude;
longitude = request.cf.longitude;
endpoint += `${latitude};${longitude}/?token=${token}`;
const init = {
headers: {
'content-type': 'application/json;charset=UTF-8',
},
};
const response = await fetch(endpoint, init);
const content = await response.json();
html_content += `<p>This is a demo using Workers geolocation data. </p>`;
html_content += `You are located at: ${latitude},${longitude}.</p>`;
html_content += `<p>Based off sensor data from <a href="${content.data.city.url}">${content.data.city.name}</a>:</p>`;
html_content += `<p>The AQI level is: ${content.data.aqi}.</p>`;
html_content += `<p>The N02 level is: ${content.data.iaqi.no2?.v}.</p>`;
html_content += `<p>The O3 level is: ${content.data.iaqi.o3?.v}.</p>`;
html_content += `<p>The temperature is: ${content.data.iaqi.t?.v}°C.</p>`;
let html = `
<!DOCTYPE html>
<head>
<title>Geolocation: Weather</title>
</head>
<body>
<style>${html_style}</style>
<div id="container">
${html_content}
</div>
</body>`;
return new Response(html, {
headers: {
'content-type': 'text/html;charset=UTF-8',
},
});
}