package agent

import "slices"

// AddPeer adds a peer agent by name.
func (ag *Agent) AddPeer(name string) {
	ag.peerMu.Lock()
	if ag.peers == nil {
		ag.peers = make(map[string]struct{})
	}
	ag.peers[name] = struct{}{}
	ag.peerMu.Unlock()
}

// RemovePeer removes a peer agent by name.
func (ag *Agent) RemovePeer(name string) {
	ag.peerMu.Lock()
	delete(ag.peers, name)
	ag.peerMu.Unlock()
}

// Peers returns the sorted list of peer agent names.
func (ag *Agent) Peers() []string {
	ag.peerMu.RLock()
	defer ag.peerMu.RUnlock()
	out := make([]string, 0, len(ag.peers))
	for name := range ag.peers {
		out = append(out, name)
	}
	slices.Sort(out)
	return out
}