libzotero/lib/ApiResponse.js

javascript libZotero

'use strict';

var log = require('./Log.js').Logger('libZotero:ApiResponse');

//takes a superagent response
module.exports = function (response) {
	log.debug('Zotero.ApiResponse', 3);
	this.totalResults = 0;
	this.apiVersion = null;
	this.lastModifiedVersion = 0;
	this.linkHeader = '';
	this.links = {};

	if (response) {
		this.isError = !response.ok;
		//this.data = response.json;
		this.parseResponse(response);
	}
};

module.exports.prototype.parseResponse = function (response) {
	log.debug('parseResponse', 3);
	var apiResponse = this;
	apiResponse.rawResponse = response;
	apiResponse.status = response.status;
	//keep track of relevant headers
	apiResponse.lastModifiedVersion = response.headers.get('last-modified-version');
	apiResponse.apiVersion = response.headers.get('zotero-api-version');
	apiResponse.backoff = response.headers.get('backoff');
	apiResponse.retryAfter = response.headers.get('retry-after');
	apiResponse.contentType = response.headers.get('content-type');
	apiResponse.linkHeader = response.headers.get('link');
	apiResponse.totalResults = response.headers.get('total-results');
	if (apiResponse.backoff) {
		apiResponse.backoff = parseInt(apiResponse.backoff, 10);
	}
	if (apiResponse.retryAfter) {
		apiResponse.retryAfter = parseInt(apiResponse.retryAfter, 10);
	}
	//TODO: parse link header into individual links
	log.debug('parse link header', 4);
	log.debug(apiResponse.linkHeader, 4);
	if (apiResponse.linkHeader) {
		var links = apiResponse.linkHeader.split(',');
		var parsedLinks = {};
		var linkRegex = /^<([^>]+)>; rel="([^\"]*)"$/;
		for (var i = 0; i < links.length; i++) {
			var matches = linkRegex.exec(links[i].trim());
			if (matches[2]) {
				parsedLinks[matches[2]] = matches[1];
			}
		}
		apiResponse.parsedLinks = parsedLinks;
	}
};