var fs = require('fs');

var path = require('path');

var request = require('request');

var defaults = require('./defaults');

var auth = require('./auth');

var extend = require('util')._extend;

var Client = function(options) {

options = options || {};

this.host = options.host || defaults.host;

this.port = options.port || defaults.port;

this._httpOptions = {protocolStr: 'http'};

auth.init(this, auth.client, 'auth', options);

defaults.commands.forEach(function(commandId) {

this[commandId] = this._execute.bind(this, commandId);

}.bind(this));

};

Client.prototype._execute = function(command) {

var argumentsArray = [];

for (var key in arguments)

argumentsArray.push(arguments[key]);

var callback = argumentsArray[argumentsArray.length-1];

if (typeof callback != 'function')

throw new Error('Need callback argument for ' + command);

arguments = argumentsArray.slice(1, argumentsArray.length-1);

var options = extend(JSON.parse(JSON.stringify(this._httpOptions)), {

uri: this._httpOptions.protocolStr+'://' + this.host + ':' + this.port + '/execute',

method: 'POST',

json: {

command: command,

arguments: arguments

}

});

if (this._basicAuth) options.auth = this._basicAuth;

request(options, function(err, res, body) {

if (err) return callback(err);

if (res.statusCode == 401) {

return callback(new Error("Authentication failed"))

}

if (res.statusCode != 200) {

return callback(new Error('Server returned error: ' + body.error.message));

}

return callback(null, body.result);

})

};

module.exports = Client;