oembed.js

'use strict';
var EMBED_WIDTH = 600;
var EMBED_HEIGHT = 300;

var mustache = require('mustache'),
	url = require('url');
var cache = require('./cache');

exports.getEmbedCode = function getEmbedCode(_, request, response) {
	var params = url.parse(request.url, true).query;
	if (!params.url) {
		respond('', 400, response);
		return;
	}

	//Check for format issues
	if (params.format && params.format !== 'json') {
		respond('Not implemented. Please use JSON', 501, response);
		return;
	}

	var data = cache.summary;
	data.height = EMBED_HEIGHT;
	data.width = EMBED_WIDTH;
	cache.summary.host = request.headers.host;

	/*eslint-disable camelcase */
	//For now, respond to any url request the same way
	var embedCode = {

		//As per the spec at http://oembed.com/

		/* type (required)
			The resource type. Valid values, along with value-specific
			parameters, are described below. */
		type: 'rich',

		/*version (required)
			The oEmbed version number. This must be 1.0.*/
		version: 1.0,

		/*author_name (optional)
			The name of the author/owner of the resource. */
		author_name: 'Sock Drawer',

		/*author_url (optional)
			A URL for the author/owner of the resource.*/
		author_url: 'https://github.com/SockDrawer',

		/*html (required)
			The HTML required to display the resource.
			The HTML should have no padding or margins.
			Consumers may wish to load the HTML in an off-domain iframe
			to avoid XSS vulnerabilities.
			The markup should be valid XHTML 1.0 Basic. */
		html: mustache.render(cache.templates.embedTemplate,
			data, cache.templates),

		/*width (required)
			The width in pixels required to display the HTML.*/
		width: EMBED_WIDTH,

		/*height (required)
			The height in pixels required to display the HTML.*/
		height: EMBED_HEIGHT
	};
	/*eslint-enable camelcase */
	respond(JSON.stringify(embedCode), 200, response);
};

function respond(data, code, response) {
	response.writeHead(code);
	response.write(data, 'utf8');
	response.end();
}