89 lines
3.6 KiB
JavaScript
89 lines
3.6 KiB
JavaScript
"use strict";
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// request.js
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//
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// Created by Cisco Fresquet on 04/24/2017.
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// Copyright 2017 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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/* global module */
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// @module request
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//
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// This module contains the `request` module implementation
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// This file was imported here to prevent the cross-domain origin error:
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// Error: Cannot find module 'request' (path 'file:///LocalInstallPath/scripts/modules/' outside of origin script 'URL'
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// Keep this file in sync with https://github.com/highfidelity/hifi/blob/master/scripts/modules/request.js
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// TODO: should we make an exception for the modules folder? (Thoys Jan-10-2018)
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// ===========================================================================================
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module.exports = {
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// ------------------------------------------------------------------
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request: function (options, callback) { // cb(error, responseOfCorrectContentType) of url. A subset of npm request.
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var httpRequest = new XMLHttpRequest(), key;
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// QT bug: apparently doesn't handle onload. Workaround using readyState.
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httpRequest.onreadystatechange = function () {
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var READY_STATE_DONE = 4;
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var HTTP_OK = 200;
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if (httpRequest.readyState >= READY_STATE_DONE) {
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var error = (httpRequest.status !== HTTP_OK) && httpRequest.status.toString() + ':' + httpRequest.statusText,
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response = !error && httpRequest.responseText,
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contentType = !error && httpRequest.getResponseHeader('content-type');
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if (!error && contentType.indexOf('application/json') === 0) { // ignoring charset, etc.
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try {
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response = JSON.parse(response);
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} catch (e) {
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error = e;
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}
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}
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if (error) {
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response = { statusCode: httpRequest.status };
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}
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callback(error, response);
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}
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};
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if (typeof options === 'string') {
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options = { uri: options };
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}
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if (options.url) {
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options.uri = options.url;
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}
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if (!options.method) {
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options.method = 'GET';
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}
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if (options.body && (options.method === 'GET')) { // add query parameters
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var params = [], appender = (-1 === options.uri.search('?')) ? '?' : '&';
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for (key in options.body) {
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if (options.body.hasOwnProperty(key)) {
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params.push(key + '=' + options.body[key]);
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}
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}
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options.uri += appender + params.join('&');
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delete options.body;
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}
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if (options.json) {
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options.headers = options.headers || {};
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options.headers["Content-type"] = "application/json";
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options.body = JSON.stringify(options.body);
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}
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for (key in options.headers || {}) {
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if (options.headers.hasOwnProperty(key)) {
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httpRequest.setRequestHeader(key, options.headers[key]);
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}
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}
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httpRequest.open(options.method, options.uri, true);
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httpRequest.send(options.body);
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}
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};
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// ===========================================================================================
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// @function - debug logging
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function debug() {
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print('RequestModule | ' + [].slice.call(arguments).join(' '));
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}
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