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node_helper.js
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node_helper.js
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/* Magic Mirror
* Node Helper: MMM-bunq
*
* By Cedrik Hoffmann
* MIT Licensed.
*/
const NodeHelper = require("node_helper");
const crypto = require("crypto");
const Log = require("logger");
const fetch = require("node-fetch");
module.exports = NodeHelper.create({
start: function() {
//this.url = "https://public-api.sandbox.bunq.com/v1";
this.url = "https://api.bunq.com/v1";
this.monetaryDescription = null;
this.apiKey = null;
this.publicKey = null;
this.privateKey = null;
this.instToken = null;
this.userId = null;
this.sessionToken = null;
this.deviceId = null;
this.iban = null;
Log.log(`${this.name} is started`);
},
socketNotificationReceived: async function(notification, payload) {
switch (notification) {
case "HERE_IS_YOUR_CONFIG":
this.apiKey = payload.apiKey;
this.monetaryDescription = payload.monetaryDescription;
this.iban = payload.iban;
await this.makeRequest();
break;
case "UPDATE_PLEASE":
await this.makeRequest();
break;
}
},
makeRequest: async function() {
this.crypto()
.then(_ => this.installation())
.then(_ => this.device())
.then(_ => this.session())
.then(_ => this.getSaldo())
.catch(this.handleError);
},
crypto: async function() {
const { publicKey, privateKey } = crypto.generateKeyPairSync("rsa", {
modulusLength: 2048, // the length of your key in bits
publicKeyEncoding: {
type: "spki", // recommended to be 'spki' by the Node.js docs
format: "pem"
}, privateKeyEncoding: {
type: "pkcs8", // recommended to be 'pkcs8' by the Node.js docs
format: "pem"
}
});
this.publicKey = publicKey;
this.privateKey = privateKey;
},
fetchData: async function(path, options, callback) {
await fetch(this.url + path, options)
.then((response) => response.json())
.then((data) => callback(data))
.catch((error) => this.handleError(error));
},
handleError: function(error) {
Log.error(error);
},
installation: async function() {
const options = {
method: "POST", headers: {
"Content-Type": "application/json", "Cache-Control": "no-cache", "User-Agent": "MagicMirror", "X-Bunq-Language": "de_DE", "X-Bunq-Region": "de_DE", "X-Bunq-Request-Id": Math.random() * 9, "X-Bunq-Geolocation": "0 0 0 0 000"
}, body: JSON.stringify({ client_public_key: this.publicKey })
};
await this.fetchData("/installation", options, data => this.handleInstData(data));
},
device: async function() {
const options = {
method: "POST", headers: {
"User-Agent": "MagicMirror", "X-Bunq-Client-Authentication": this.instToken
}, body: JSON.stringify({
description: "MagicMirror", secret: this.apiKey
})
};
await this.fetchData("/device-server", options, data => this.handleDeviceData(data));
},
session: async function() {
const body = JSON.stringify({ secret: this.apiKey });
const sign = crypto.createSign("sha256");
sign.update(body);
const sig = sign.sign(this.privateKey, "base64");
const options = {
method: "POST", headers: {
"X-Bunq-Client-Signature": sig, "X-Bunq-Client-Authentication": this.instToken
}, body: body
};
await this.fetchData("/session-server", options, data => this.handleSessionData(data));
},
getSaldo: async function() {
const options = {
method: "GET", headers: {
"User-Agent": "MagicMirror", "X-Bunq-Client-Authentication": this.sessionToken
}
};
await this.fetchData(`/user/${this.userId}/monetary-account`, options, data => this.handleSaldoData(data));
},
handleInstData: function(data) {
this.sendSocketNotification("HERE_IS_INST_TOKEN", data);
this.instToken = data.Response[1].Token.token;
},
handleDeviceData: function(data) {
this.sendSocketNotification("HERE_IS_DEVICE_TOKEN", data);
this.deviceId = data.Response[0].Id.id;
},
handleSessionData: function(data) {
this.sendSocketNotification("HERE_IS_SESSION", data);
this.sessionToken = data.Response[1].Token.token;
this.userId = data.Response[2].UserPerson.id;
},
handleSaldoData: function(data) {
this.sendSocketNotification("HERE_IS_SALDO", data);
const accounts = data.Response.filter(obj => obj.MonetaryAccountBank !== undefined);
accounts.forEach(account => {
if(account.MonetaryAccountBank.alias[0].value === this.iban) {
this.sendSocketNotification("HERE_IS_FINAL_SALDO", account.MonetaryAccountBank.balance.value);
}
})
}
});