/
app.js
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/
app.js
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const express = require('express');
const bodyParser = require('body-parser');
const listEndpoints = require('express-list-endpoints');
const request = require('request');
const { version } = require('./package.json');
const app = express();
const success = 200;
const badRequest = 400;
const unauthorised = 401;
const serverError = 500;
function response(status, message) {
return {
status,
message,
};
}
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.get('/', (req, res) => {
res.status(success).send({ status: '🌞 SERVER OK', version, endpoints: listEndpoints(app) });
});
app.get('/weather', (req, res) => {
const { latitude } = req.query;
const { longitude } = req.query;
const { apiKey } = req.query;
if (!latitude || !longitude || !apiKey) {
res.status(badRequest).send(response(badRequest, 'There are missing query parameters'));
return;
}
const url = `https://api.darksky.net/forecast/${apiKey}/${latitude},${longitude}?units=uk`;
request(url, (err, resp) => {
if (err) {
res.status(serverError).send(response(serverError, err.message));
return;
}
if (resp.statusCode === 403) {
res.status(unauthorised).send(response(unauthorised, 'API key is incorrect'));
return;
}
if (resp.statusCode === 200) {
const days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
const darkskyResponse = JSON.parse(resp.body);
const current = {
summary: darkskyResponse.currently.summary,
icon: darkskyResponse.currently.icon,
temperature: darkskyResponse.currently.temperature,
};
const week = [];
for (let i = 1; i < darkskyResponse.daily.data.length; i += 1) {
const date = new Date(darkskyResponse.daily.data[i].time * 1000);
const day = days[date.getDay()];
const icon = darkskyResponse.daily.data[i].icon;
const temperatureLow = darkskyResponse.daily.data[i].temperatureLow;
const temperatureHigh = darkskyResponse.daily.data[i].temperatureHigh;
week.push({
day,
icon,
temperatureLow,
temperatureHigh,
});
}
res.status(success).send({ current, week });
} else {
res.status(serverError).send(response(serverError, `Could not get weather: ${resp}`));
}
});
});
const port = 3001;
app.listen(process.env.PORT || port, () => { });
module.exports = app;