Welcome to Showdown Trivia

// WebSocket hub manages all active game rooms
type Hub struct {
    Logger *slog.Logger
    rooms  RoomList
    m      *metrics.Metrics
}

// User signup with secure password hashing
hashedPassword, err := hashPassword(form.Password)
u := user.NewUser(form.Username, form.Email, hashedPassword)
_, err = userService.AddUser(u)

// Game configuration validation
if category < 0 || category > 32 {
    f.Errors["category"] = "category can't be less 0 or greater than 32"
}
if amount < 1 || amount > 50 {
    f.Errors["amount"] = "number of questions can't be less than 1 or greater than 50"
}
if time < 2 || time > 20 {
    f.Errors["timer"] = "timer can't be less than 2 or greater than 20"
}

// Score calculation at end of each question
func (g *Game) endOfQuestion(question entities.Question, answers map[string]string) {
    for username, answer := range answers {
        if question.CorrectAnswer == answer {
            g.score(username)
        }
    }
}

// List all available game rooms
func (h *Hub) ListRooms() []webentities.RoomData {
    var rooms []webentities.RoomData
    for _, r := range h.rooms {
        if r.Game.GameStarted {
            continue
        }
        rooms = append(rooms, webentities.RoomData{
            Owner:   r.owner,
            Id:      r.Id,
            Players: r.getUsers(),
        })
    }
    return rooms
}

// Metrics tracked by the application
type Metrics struct {
    WebsocketConns prometheus.Gauge      // Active WebSocket connections
    ReqDuration    *prometheus.HistogramVec // Request duration for game creation
}