package usher

import (
	"mchess_server/chess"
	lobbies "mchess_server/lobby_registry"
	"mchess_server/utils"
)

type Usher struct {
}

var instance *Usher

func newUsher() *Usher {
	return &Usher{}
}

func GetUsher() *Usher {
	if instance == nil {
		instance = newUsher()
	}
	return instance
}

func (u *Usher) WelcomeNewPlayer(player *chess.Player) *lobbies.Lobby {
	lobby := lobbies.GetLobbyRegistry().GetLobbyForPlayer()
	return lobby
}

func (u *Usher) CreateNewPrivateLobby(player *chess.Player) *lobbies.Lobby {
	lobby := lobbies.GetLobbyRegistry().CreateNewPrivateLobby()
	return lobby
}

func (u *Usher) FindExistingPrivateLobby(p utils.Passphrase) *lobbies.Lobby {
	lobby := lobbies.GetLobbyRegistry().GetLobbyByPassphrase(p)
	if lobby == nil || lobby.IsFull() {
		return nil
	}
	return lobby
}

func (u *Usher) AddPlayerToLobbyAndStartGameIfFull(player *chess.Player, lobby *lobbies.Lobby) {
	lobby.AddPlayerAndStartGameIfFull(player)
}