var Client = require('ssh2');

var hostList = [
  {
    host: '23123123123213',
    username: 'root',
    password: 'OWPEFJEWOwefoijwepfjwepfowewefwefewfewfwe',
    port: 22
  },
  {
    host: '123123123123123123',
    username: 'root',
    password: 'waofwepjfoewfpwef',
    port: 22
  }
];


var SSH = function(hosts) {
  this._hosts = hosts.map(function(host) {
    return new Host(host);
  });
};

SSH.prototype.run = function(cb) {
  this.callback = cb;
}

SSH.prototype.connect = function() {
  this._hosts.forEach(function(host) {
    host.connect(this);
  }.bind(this));
};

var Host = function(options) {
  this._client = new Client();
  this.host = options.host;
  this.port = options.port;
  this.username = options.username;
  this.password = options.password;
};

Host.prototype.connect = function(ssh) {
  var self = this;
  this._client.on('ready', function() {
    ssh.callback(self);
  });

  this._client.on('error', function(err) {
    if (err) console.log(err);
  });
  this._client.connect({
    host: this.host,
    username: this.username,
    password: this.password,
    port: this.port
  });
};

Host.prototype.cd = function(path, callback) {
  this.currentDir = path;
  this._client.sftp(function(err, sftp) {
    sftp.opendir(path, function(err, buffer) {
      sftp.readdir(buffer, function(err, list) {
        callback(err, list);
      });
    });
  });
};

var ConnGroup = new SSH(hostList);


ConnGroup.run(function(conn) {
  conn.cd('/', function(err, list) {
  });
});


ConnGroup.connect();