117 lines
3.4 KiB
JavaScript
117 lines
3.4 KiB
JavaScript
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/*********************************************************
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* Simple Node.js module for using the Bing Search API *
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*********************************************************/
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// Require dependencies
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var request = require('request'),
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url = require('url'),
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_ = require('underscore'),
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qs = require('querystring');
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/**
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* @param {Object} options Options to all Bing calls, allows overriding of rootUri,
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* accKey (Bing API key), userAgent, reqTimeout
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* @returns {Bing}
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* @constructor
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*/
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var Bing = function( options ) {
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if( !(this instanceof Bing) ) return new Bing( options );
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var defaults = {
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//Bing Search API URI
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rootUri: "https://api.datamarket.azure.com/Bing/Search/",
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//TODO move the web part, to choose also Images
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//Account Key
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accKey: null,
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//Bing UserAgent
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userAgent: 'Bing Search Client for Node.js',
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//Request Timeout
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reqTimeout: 5000
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};
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//merge options passed in with defaults
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this.options = _.extend(defaults, options);
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this.searchVertical = function(query, vertical, callback, options) {
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if(typeof callback != 'function') {
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throw "Error: Callback function required!";
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}
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// TODO check if valid options
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var opts = this.options;
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if (options !== null) {
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opts = _.extend(this.options, options);
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}
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debugger;
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var reqUri = opts.rootUri + vertical +
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"?$format=json&" +
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qs.stringify({ "Query": "'" + query + "'" });
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request({
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uri: reqUri,
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method: opts.method || "GET",
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headers: {
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"User-Agent": opts.userAgent
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},
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auth: {
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user: opts.accKey,
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pass: opts.accKey
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},
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timeout: opts.reqTimeout
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}, function(err, res, body){
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// Parse body, if body
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body = typeof body === 'string' ?
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JSON.parse(body) :
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body;
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callback(err, res, body);
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});
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};
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};
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/**
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* @callback requestCallback
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* @param {String} error Error evaluates to true when an error has occurred.
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* @param {Object} response Response object from the Bing call.
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* @param {Object} body JSON of the response.
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*/
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/**
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* Performs a Bing search in the Web vertical.
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*
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* @param {String} query Query term to search for.
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* @param {requestCallback} callback Callback called with (potentially json-parsed) response.
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* @param {Object} options Options to command, allows overriding of rootUri,
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* accKey (Bing API key), userAgent, reqTimeout
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* @function
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*/
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Bing.prototype.search = function(query, callback, options) {
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this.searchVertical(query, "Web", callback, options);
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};
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/**
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* Performs a Bing search in the Images vertical.
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*
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* @param {String} query Query term to search for.
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* @param {requestCallback} callback Callback called with (potentially json-parsed) response.
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* @param {Object} options Options to command, allows overriding of rootUri,
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* accKey (Bing API key), userAgent, reqTimeout
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* @function
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*/
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Bing.prototype.images = function(query, callback, options) {
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this.searchVertical(query, "Image", callback, options);
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};
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module.exports = Bing;
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