package admin

import (
	"context"

	"tug/internal/storage"
)

func (s *Service) candidates(ctx context.Context, member []storage.Group) ([]string, error) {
	all, err := s.store.ListGroups(ctx)
	if err != nil {
		return nil, failed("list groups", err)
	}
	in := map[string]bool{}
	for _, g := range member {
		in[g.ID] = true
	}
	var out []string
	for _, g := range all {
		if !in[g.ID] && g.Name != s.primaryGroup {
			out = append(out, g.Name)
		}
	}
	return out, nil
}