package lobby_registry

import (
	"github.com/google/uuid"
)

type LobbyRegistry struct {
	lobbies map[uuid.UUID]*Lobby
}

var instance *LobbyRegistry

func GetLobbyRegistry() *LobbyRegistry {
	if instance == nil {
		instance = newLobbyRegistry()
	}

	return instance
}

func newLobbyRegistry() *LobbyRegistry {
	return &LobbyRegistry{lobbies: make(map[uuid.UUID]*Lobby)}
}

func (r *LobbyRegistry) GetLobbyForPlayer() *Lobby {
	for _, lobby := range r.lobbies {
		if !lobby.IsFull() {
			return lobby
		}
	}

	newLobby := NewEmptyLobbyByUUID(uuid.New())
	r.addNewLobby(newLobby)
	return newLobby
}

func (r *LobbyRegistry) addNewLobby(lobby *Lobby) uuid.UUID {
	uuid := uuid.New()
	r.lobbies[uuid] = lobby
	return uuid
}