/*!
 * A proxy client for connecting to a remote instance of dpd
 */

var http = require('http')
	,	util = require('util')
	, request = require('request')
	, Keys = require('../keys')
	, debug = require('debug')('remote')
	, httpProxy = require('http-proxy')
	, url = require('url');

/*!
 * Create a remote and host it at the given port.
 */

exports.createRemote = function(remote, port) {
	debug('proxying to %s', remote);

	if(remote.substr(0,7) !== 'http://') remote = 'http://' + remote;

	var remoteUrl = url.parse(remote);
	var keys = new Keys();
  var server = httpProxy.createServer(function(req, res, proxy) {
  	var buffer = httpProxy.buffer(req);

		debug('[%s] %s', req.method, req.url);
		keys.getLocal(function(err, key) {
			debug('key [%s]', key);
			if(err) return res.end('error reading .dpd/keys.json: ' + err.message);
			req.headers['dpd-ssh-key'] = key;
			req.headers.host = remoteUrl.hostname;
			proxy.proxyRequest(req, res, {
	      host: remoteUrl.hostname,
	      port: remoteUrl.port || 80,
	      buffer: buffer
	    });
		});
	});
	server.listen(port || 2403);
	server.on('listening', function() {
		console.log('remote dashboard is available at http://localhost:%s/dashboard', port || 2403)
	})
};