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I am developing a BOT where I need to make a request (GET) for an API that returns me a JSON. This part is apparently working properly, I put this request in a separate file and created a function to call in my main function.
The problem is that when I call the function, before receiving its return my program already returns undefined and a few seconds after the function finishes processing the request.
How do I force my Main to wait for the return of the function?
I even tried to use async and await but I’m very lay in Javascript and I don’t know if it’s correct.
File apiCall.js
const config = require('./config.json');
function formatDate(date) {
var d = new Date(date),
month = '' + (d.getMonth() + 1),
day = '' + d.getDate(),
year = d.getFullYear();
if (month.length < 2)
month = '0' + month;
if (day.length < 2)
day = '0' + day;
return [year, month, day].join('-');
}
module.exports = {
async apiGet(symbol){
try{
var http = require('https');
var date = new Date();
if(date.getDay == 6 ){
date.setDate(date.getDate()-1);// se for Sabado pegar os dados de Sexta
} else if(date.getDay == 0){
date.setDate(date.getDate()-2);// se for Domingo pegar os dados de Sexta
}else if(date.getHours > '18'){
console.log('Horario OK');// pegando os dados de hoje pois a bolsa já fechou
} else {
date.setDate(date.getDate()-1);//Pegando os dados de ontem pois a bolsa ainda não fechou
}
var time = new Date();
var url = 'https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol='+symbol+'&apikey='+config.key;
http.get(url, function (res) {
var body = '';
res.on('data', function (chunk) {
body += chunk;
});
res.on('end', function () {
var api = JSON.parse(body);
var apiString = JSON.stringify(body);
var fechamento = api['Time Series (Daily)']['2020-10-06']['4. close'];
console.log("API fechamento: ", fechamento);
var now = new Date();
var tempo = now.getMilliseconds() - time.getMilliseconds();
console.log(`tempo para a API fazer o request: ${tempo}`);
return fechamento;
});
}).on('error', function (e) {
console.log("Got an error: ", e);
});
}catch(err){
console.log(err)
}
}
};
File LMF.js
const Discord = require('discord.js');
const bot = new Discord.Client();
const config = require('./config.json');
const api = require('./apiCall.js');
bot.login(config.token);
bot.on('message', async message => {
if(message.author.bot) return;
const CompleteMessage = message.content.toUpperCase();
if(CompleteMessage.indexOf(config.prefix) !== 0) return;
let args = message.content.toLowerCase().split(" ");
switch (args[1]) {
case 'teste':
api.apiGet(args[2])
.then(fechamento =>{
message.channel.send(fechamento);
}).catch(err=>{
console.log(err);
});
break;
default:
message.channel.send("Para acessar a lista de comandos digite !LMF help");
break;
}
});