package serve

import (
	"sync"

	"github.com/google/uuid"

	"git.sunturtle.xyz/studio/shotgun/game"
)

type GameID = uuid.UUID

// Lobby is a set of active games.
type Lobby struct {
	mu sync.Mutex
	// games is the set of all active games in the lobby.
	games map[GameID]*game.Game
}

func New() *Lobby {
	return &Lobby{
		games: make(map[GameID]*game.Game),
	}
}

// Game returns the game with the given ID.
func (l *Lobby) Game(id GameID) *game.Game {
	l.mu.Lock()
	defer l.mu.Unlock()
	return l.games[id]
}

// Start starts a new game in the lobby.
func (l *Lobby) Start() GameID {
	id := uuid.New()
	g := game.New()
	l.mu.Lock()
	defer l.mu.Unlock()
	l.games[id] = g
	return id
}

// Finish removes a game from the lobby.
func (l *Lobby) Finish(id GameID) {
	l.mu.Lock()
	defer l.mu.Unlock()
	delete(l.games, id)
}