'use strict';

const util = require('util');

const internalUtil = require('internal/util');

const EventEmitter = require('events').EventEmitter;

exports.IncomingMessage = require('_http_incoming').IncomingMessage;

const common = require('_http_common');

exports.METHODS = common.methods.slice().sort();

exports.OutgoingMessage = require('_http_outgoing').OutgoingMessage;

const server = require('_http_server');

exports.ServerResponse = server.ServerResponse;

exports.STATUS_CODES = server.STATUS_CODES;

const agent = require('_http_agent');

const Agent = exports.Agent = agent.Agent;

exports.globalAgent = agent.globalAgent;

const client = require('_http_client');

const ClientRequest = exports.ClientRequest = client.ClientRequest;

exports.request = function(options, cb) {

return new ClientRequest(options, cb);

};

exports.get = function(options, cb) {

var req = exports.request(options, cb);

req.end();

return req;

};

exports._connectionListener = server._connectionListener;

const Server = exports.Server = server.Server;

exports.createServer = function(requestListener) {

return new Server(requestListener);

};

// Legacy Interface

function Client(port, host) {

if (!(this instanceof Client)) return new Client(port, host);

EventEmitter.call(this);

host = host || 'localhost';

port = port || 80;

this.host = host;

this.port = port;

this.agent = new Agent({ host: host, port: port, maxSockets: 1 });

}

util.inherits(Client, EventEmitter);

Client.prototype.request = function(method, path, headers) {

var self = this;

var options = {};

options.host = self.host;

options.port = self.port;

if (method[0] === '/') {

headers = path;

path = method;

method = 'GET';

}

options.method = method;

options.path = path;

options.headers = headers;

options.agent = self.agent;

var c = new ClientRequest(options);

c.on('error', function(e) {

self.emit('error', e);

});

// The old Client interface emitted 'end' on socket end.

// This doesn't map to how we want things to operate in the future

// but it will get removed when we remove this legacy interface.

c.on('socket', function(s) {

s.on('end', function() {

if (self._decoder) {

var ret = self._decoder.end();

if (ret)

self.emit('data', ret);

}

self.emit('end');

});

});

return c;

};

exports.Client = internalUtil.deprecate(Client, 'http.Client is deprecated.');

exports.createClient = internalUtil.deprecate(function(port, host) {

return new Client(port, host);

}, 'http.createClient is deprecated. Use http.request instead.');