// Generic helpers
package main

import (
	"errors"
	"gosrc.io/xmpp/stanza"
	"sort"
	"sync"
)

func rangeOrdered(m *sync.Map, fn func(k, v any) bool) {
	var keys []string

	m.Range(func(k, v any) bool {
		keys = append(keys, k.(string))
		return true
	})

	sort.Strings(keys)

	for _, k := range keys {
		v, _ := m.Load(k)
		if !fn(k, v) {
			break
		}
	}
}

func getPresenceFromJIDMuc(jid *stanza.Jid) (*stanza.Presence, error) {
	mo, ok := mucmembers.Load(jid.Bare())
	if !ok {
		return nil, errors.New("tab is not present in mucmembers")
	}

	mm, ok := mo.(mucUnit)
	if !ok {
		return nil, errors.New("mucUnit is nil")
	}

	mmm := mm.Members
	mmmm, ok := mmm.Load(jid.Resource)
	if !ok {
		return nil, errors.New("user not in room")
	}

	pres, ok := mmmm.(stanza.Presence)
	if !ok {
		return nil, errors.New("presence is nil")
	}

	return &pres, nil
}