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index.js
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index.js
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const request = require('request');
const util = require('util');
const express = require('express');
const ip = require('ip');
const _data = require('./lib/data');
const helpers = require('./lib/helpers');
const app = express();
const handlers = {};
const serverPort = 3000; // ! change me
const debug = util.debuglog('handlers');
// * NODE_DEBUG=handlers node index.js
handlers.init = function () {
app.listen(serverPort, () => setTimeout(() => {
console.log(
`Web server running.\n\n\thttp://${ip.address()}:${serverPort}\n`,
);
}, 1000));
app.get('/', (req, res) => {
const { symbol, from, to } = req.query;
const date = new Date();
const fromDefault = from !== undefined ? from : date.setMonth(date.getMonth() - 1) / 1000;
const toDefault = to !== undefined ? to : Date.now() / 1000;
// // console.log(fromDefault, ' - ', toDefault);
function filterData(data) {
return (data.time > fromDefault && data.time < toDefault);
}
if (symbol) {
_data.read('crypto', symbol, (err, data) => {
if (!err && data) {
res.json(data.filter(filterData));
} else {
debug(
'ID 132 - ',
helpers.GetTime(),
' - ',
symbol,
'- error reading file', err
);
}
});
} else {
res.json({ status: 'invalid parameters' });
}
});
setInterval(() => {
const date = new Date();
if (date.getMinutes() % 5 === 0) {
handlers.update();
}
}, 60000);
};
handlers.update = function () {
request('https://api.binance.com/api/v3/ticker/price', (error, response) => {
if (error) throw new Error(error);
const cryptoData = JSON.parse(response.body);
let time;
cryptoData.forEach((symbolData, i) => {
if (i === 0) {
time = helpers.GetTime();
} else if (i === cryptoData.length - 1) {
time = helpers.GetTime() - time;
console.log(`created / updated ${cryptoData.length} files in ${(time * 1000).toFixed(2)} ms`);
}
_data.exist('crypto', symbolData.symbol, (err) => {
if (!err) {
// ? EXIST UPDATE FILE
_data.read('crypto', symbolData.symbol, (err, data) => {
if (!err && data) {
data.push({
time: helpers.GetTime(),
price: symbolData.price,
});
_data.update('crypto', symbolData.symbol, data, (err) => {
if (!err) {
debug(
'ID 217 - ',
helpers.GetTime(),
' - ',
symbolData.symbol,
'- file updated',
);
} else {
debug(
'ID 250 - ',
helpers.GetTime(),
' - ',
symbolData.symbol,
'- error ',
err,
);
}
});
} else {
debug('ID 107 - ', err);
}
});
} else {
// ? NOT EXIST CREATE FILE
const fileData = [
{
time: helpers.GetTime(),
price: symbolData.price,
},
];
_data.create('crypto', symbolData.symbol, fileData, (err) => {
if (!err) {
debug(
'ID 147 - ',
helpers.GetTime(),
' - ',
symbolData.symbol,
'- file created',
);
} else {
debug(
'ID 204 - ',
helpers.GetTime(),
' - ',
symbolData.symbol,
'- error ',
err,
);
}
});
}
});
});
});
};
module.exports = handlers;
handlers.init();