// Copyright 2012 Mark Cavage, Inc. All rights reserved.
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'use strict';
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var qs = require('qs');
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///--- API
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/**
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* Parses the jsonp callback out of the request.
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* Supports checking the query string for `callback` or `jsonp` and ensuring
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* that the content-type is appropriately set if JSONP params are in place.
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* There is also a default `application/javascript` formatter to handle this.
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*
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* You *should* set the `queryParser` plugin to run before this, but if you
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* don't this plugin will still parse the query string properly.
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*
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* @public
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* @function jsonp
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* @returns {Function} Handler
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* @example
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* var server = restify.createServer();
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* server.use(restify.plugins.jsonp());
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*/
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function jsonp() {
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function _jsonp(req, res, next) {
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var q = req.getQuery();
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// If the query plugin wasn't used, we need to hack it in now
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if (typeof q === 'string') {
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req.query = qs.parse(q);
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}
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if (req.query.callback || req.query.jsonp) {
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res.setHeader('Content-Type', 'application/javascript');
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}
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next();
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}
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return _jsonp;
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}
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module.exports = jsonp;
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