feat: start work on axios integration, deprecating request.

lib/request-v1.js

@@ -0,0 +1,138 @@
+const assert = require('assert');
+const request = require('request');
+
+const {signMessage} = require('./utility.js');
+
+const baseUrls = {
+  livenet: 'https://api.bybit.com',
+  testnet: 'https://api-testnet.bybit.com'
+};
+
+module.exports = class Request {
+
+  constructor(key, secret, livenet=false, options={}) {
+    this.baseUrl = baseUrls[livenet === true ? 'livenet' : 'testnet'];
+    this._timeOffset = null;
+    this._syncTimePromise = null;
+
+    this.options = {
+      recv_window: 5000,
+      sync_interval_ms: 3600000,
+      ...options
+    };
+
+    if (key) assert(secret, 'Secret is required for private enpoints');
+
+    this._syncTime();
+    setInterval(this._syncTime.bind(this), parseInt(this.options.sync_interval_ms));
+
+    this.key = key;
+    this.secret = secret;
+  }
+
+  async get(endpoint, params) {
+    const result = await this._call('GET', endpoint, params);
+
+    return result;
+  }
+
+  async post(endpoint, params) {
+    const result = await this._call('POST', endpoint, params);
+
+    return result;
+  }
+
+  async getTimeOffset() {
+    const start = Date.now();
+    const result = await this.get('v2/public/time');
+    const end = Date.now();
+
+    return Math.ceil((result.time_now * 1000) - end + ((end - start) / 2));
+  }
+
+  async _call(method, endpoint, params) {
+    const publicEndpoint = endpoint.startsWith('v2/public');
+
+    if (!publicEndpoint) {
+      if (!this.key || !this.secret) throw new Error('Private endpoints require api and private keys set');
+
+      if (this._timeOffset === null) await this._syncTime();
+
+      params = this._signRequest(params);
+    }
+
+    const options = {
+      url: [this.baseUrl, endpoint].join('/'),
+      method: method,
+      json: true
+    };
+
+    switch (method) {
+    case 'GET':
+      options.qs = params;
+      break;
+    case 'POST':
+      options.body = params;
+      break;
+    }
+
+    return new Promise((resolve, reject) => {
+      request(options, function callback(error, response, body) {
+        if (error) {
+          return reject(error);
+        }
+        if (response.statusCode == 200) {
+          return resolve(body);
+        }
+        return reject({
+          code: response.statusCode,
+          message: response.statusMessage,
+          body: response.body,
+          requestOptions: options
+        });
+      });
+    });
+  }
+
+  _signRequest(data) {
+    const params = {
+      ...data,
+      api_key: this.key,
+      timestamp: Date.now() + this._timeOffset
+    };
+
+    // Optional, set to 5000 by default. Increase if timestamp/recv_window errors are seen.
+    if (this.options.recv_window && !params.recv_window) {
+      params.recv_window = this.options.recv_window;
+    }
+
+    if (this.key && this.secret) {
+      params.sign = signMessage(this._serializeParams(params), this.secret);
+    }
+
+    return params;
+  }
+
+  _serializeParams(params) {
+    return Object.keys(params)
+      .sort()
+      .map(key => `${key}=${params[key]}`)
+      .join('&');
+  }
+
+  async _syncTime() {
+    if (this._syncTimePromise !== null) return this._syncTimePromise;
+
+    this._syncTimePromise = new Promise(async (resolve, reject) => {
+      try {
+        this._timeOffset = await this.getTimeOffset();
+        this._syncTimePromise = null;
+        resolve();
+      } catch (err) {
+        reject(err);
+      }
+    });
+
+    return this._syncTimePromise;
+  }
+};