package user

import "errors"

const DeletedUserName = "Deleted user"

const (
	LastRoleOwner = "Owner"
	LastRoleAdmin = "Admin"
)

var ErrLastOwner = errors.New("last owner")
var ErrLastAdmin = errors.New("last administrator")
var ErrAccountNotDeletable = errors.New("account not deletable")

type LastAdminError struct {
	Role string
}

func (e LastAdminError) Error() string {
	if e.Role == LastRoleOwner {
		return ErrLastOwner.Error()
	}
	return ErrLastAdmin.Error()
}

func (e LastAdminError) Is(target error) bool {
	if target == ErrLastAdmin {
		return true
	}
	return target == ErrLastOwner && e.Role == LastRoleOwner
}

type Erasure struct {
	UserID        uint32
	GuardRoleIDs  []uint32
	AvatarImageID *uint32
}

type Eraser interface {
	Erase(erasure Erasure) error
}