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index.js
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index.js
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const Request = require('request');
const API_URL = 'ip-api.com';
module.exports = {
getGPS: (ip, callback) => {
const options = {
protocol: 'http',
host: API_URL,
type: 'json',
ip
};
const url = createURL(options);
Request.get(url, (err, response, body) => {
if (err) return callback(err);
let json;
try {
json = JSON.parse(body);
}
catch (e) {
return callback(e);
}
callback(null, json);
});
},
getGPSList: (ipList, callback) => {
let promiseArr = [];
ipList.forEach((ip) => {
const url = createURL({
protocol: 'http',
host: API_URL,
type: 'json',
ip
});
promiseArr.push(new Promise((resolve, reject) => {
Request.get(url, (err, response, body) => {
if (err) reject(err);
let json;
try {
json = JSON.parse(body);
}
catch (e) {
reject(err);
}
resolve(json);
});
}))
});
Promise.all(promiseArr).then(values => {
callback(null, values);
}, reason => {
callback(reason);
});
}
}
function createURL(options) {
const {protocol, host, type, ip} = options;
return `${protocol}://${host}/${type}/${ip}`;
}