built.io/lib/adaptors/RestfullAdaptor.js

SDK for Built.io Backend

var rest 			= require('rest');
var mime 			= require('rest/interceptor/mime');
var errorCode = require('rest/interceptor/errorCode');
var when			= require('when');
var Events 		= require('../events');
var client 		= rest.wrap(mime, {
		mime: 'application/json'
	})
	.wrap(errorCode, {
		code: 400
	});

module.exports.makeCall = function(object) {	
	Events.trigger("http:start");
	return client(object)
	.then(function(response) {
		Events.trigger("http:end");
		return structureResponse(response);
	})
	.catch(function(error) {
		throw structureResponse(error);
	});
}

function structureResponse(response) {
	return {
		headers: response.headers,
		status: response.status,
		entity: response.entity
	}
}

module.exports.makeXMLHttpRequest = function(object){
	Events.trigger("upload:start");
	var http = new XMLHttpRequest();
	http.open('POST',object.url,true);
	for(var header in object.headers){
		http.setRequestHeader(header,object.headers[header]);
	}
	var deferred = registerHttpListeners(http);
	http.upload.onprogress = function(e){
    deferred.notify({
    	bytesUploaded	:e.loaded,
    	bytesTotal		:e.total,
    	timestamp			:e.timeStamp
    });
  }
	http.send(object.formData);
	return deferred.promise;
}

function registerHttpListeners(http){
	var deferred = when.defer();
	http.onreadystatechange = function (e) {
		if(http.readyState == 4){
			if (http.status >= 200 && http.status <300) {
				Events.trigger("upload:end");
				deferred.resolve(http.responseText);
			} else{
				deferred.reject(http.statusText);
			}
		}
	};
	http.ontimeout = http.onerror= function (event) {
		deferred.reject(http.statusText);
	}
	return deferred;
}