// Authenticate is a function called for every client's new session.
// It manages several important tasks at the start of the session.
// 1.Ask the user for Username and twitter ID.
// 2.Search the DB to find the player if it's not a new one.
// 3.If the player is new there is a subsequence initiated:
// 3.1.Create a new sun with GenerateSun
// 3.2.Choose home planet from the newly created solar sysitem.
// 3.3.Create a reccord of the new player and start comunication.
func authenticate(ws *websocket.Conn) (*entities.Player, *anaconda.TwitterApi, error) {
var (
nickname string
twitterId string
err error
request Request
setupData *entities.SetupData
player *entities.Player
twitter *anaconda.TwitterApi
)
if err = websocket.JSON.Receive(ws, &request); err != nil {
return nil, nil, err
}
if len(request.Username) <= 0 || len(request.TwitterID) <= 0 {
return nil, nil, errors.New("Incomplete credentials")
}
if cfg.Twitter.SecureLogin {
var ok bool
anaconda.SetConsumerKey(cfg.Twitter.ConsumerKey)
anaconda.SetConsumerSecret(cfg.Twitter.ConsumerSecret)
twitter = anaconda.NewTwitterApi(request.AccessToken, request.AccessTokenSecret)
if ok, err = twitter.VerifyCredentials(); !ok {
return nil, nil, err
}
}
serverParamsMessage := response.NewServerParams()
if err = websocket.JSON.Send(ws, &serverParamsMessage); err != nil {
return nil, nil, err
}
nickname = request.Username
twitterId = request.TwitterID
entity, _ := entities.Get(fmt.Sprintf("player.%s", nickname))
if entity == nil {
setupData, err = FetchSetupData(ws)
if err != nil {
return nil, nil, err
}
player = register(setupData, nickname, twitterId, twitter)
} else {
player = entity.(*entities.Player)
}
return player, twitter, nil
}