const express = require('express');
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const router = express.Router();
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const request = require('request');
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require('dotenv').config();
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const OWM_API_KEY = process.env.OWM_API_KEY || 'invalid_key';
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/* GET home page. */
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router.get('/', function(req, res) {
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res.render('index', { weather: null, err: null });
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});
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router.post('/get_weather', function (req,res) {
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let city = req.body.city;
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let url = `http://api.openweathermap.org/data/2.5/weather?q=${city}&units=metric&appid=${OWM_API_KEY}`;
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request(url, function (err, response, body) {
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if (err) {
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res.render('index', {weather: null, error: 'Error: Unable to invoke OpenWeatherMap API'});
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}
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else {
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let weather = JSON.parse(body);
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console.log('response from OpenWeatherMap API: ' + body);
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if(weather.cod == '404' && weather.main == undefined) {
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res.render('index', {weather: null, error: 'Error: Unknown city'});
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}
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else if (weather.cod == '401' && weather.main == undefined) {
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res.render('index', {weather: null, error: 'Error: Invalid API Key. Please see http://openweathermap.org/faq#error401 for more info.'});
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}
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else {
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res.render('index', {weather: weather, error: null});
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}
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}
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});
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});
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module.exports = router;
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