package subscription

import (
	"slices"
)

// List is a container of subscription pointers
type List []*Subscription

// Strings returns a sorted slice of subscriptions
func (l List) Strings() []string {
	s := make([]string, len(l))
	for i := range l {
		s[i] = l[i].String()
	}
	slices.Sort(s)
	return s
}

// GroupPairs groups subscriptions which are identical apart from the Pairs
// The returned List contains cloned Subscriptions, and the original Subscriptions are left alone
func (l List) GroupPairs() (n List) {
	s := NewStore()
	for _, sub := range l {
		if found := s.match(&IgnoringPairsKey{sub}); found == nil {
			s.unsafeAdd(sub.Clone())
		} else {
			found.AddPairs(sub.Pairs...)
		}
	}
	return s.List()
}