BlockParty/src/main/java/us/tss3/blockparty/session/SessionManager.java

package us.tss3.blockparty.session;

import java.util.Map;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;

/** Tracks which arena (if any) each online player is currently in. Enforces single-arena membership. */
public class SessionManager {

    private final Map<UUID, PlayerSession> sessions = new ConcurrentHashMap<>();

    public boolean isInSession(UUID uuid) {
        return sessions.containsKey(uuid);
    }

    public PlayerSession get(UUID uuid) {
        return sessions.get(uuid);
    }

    public void add(PlayerSession session) {
        sessions.put(session.getUuid(), session);
    }

    public void remove(UUID uuid) {
        sessions.remove(uuid);
    }

    public Map<UUID, PlayerSession> all() {
        return sessions;
    }
}