// SPDX-License-Identifier: MPL-2.0

package organizations

import (
	"context"
	"errors"
	"slices"
	"time"
)

var ErrRoleInvitationUnsupported = errors.New("organizations: atomic role-set invitations are unsupported")

// RoleInvitationRepository must preserve the entire role set and its required
// owner authority, then commit acceptance, membership, grants and audit together.
type RoleInvitationRepository interface {
	CreateInvitationWithRoles(context.Context, Invitation, string, AuditEvent) error
	AcceptInvitationWithRoles(context.Context, [32]byte, string, string, time.Time, AuditEvent) error
}

// RoleNames returns a validated copy of the invitation's direct roles. The older
// DirectRole remains supported; supplying both forms is an error, not a union.
func (invitation Invitation) RoleNames() ([]string, error) {
	if invitation.DirectRole != "" && len(invitation.DirectRoles) > 0 || len(invitation.DirectRoles) > 16 {
		return nil, errors.New("organizations: invalid invitation roles")
	}
	roles := append([]string(nil), invitation.DirectRoles...)
	if invitation.DirectRole != "" {
		roles = append(roles, invitation.DirectRole)
	}
	slices.Sort(roles)
	for i, role := range roles {
		if !safeNamePattern.MatchString(role) || i > 0 && role == roles[i-1] {
			return nil, errors.New("organizations: invalid invitation role")
		}
	}
	return roles, nil
}