package models

import (
	"github.com/google/uuid"
	"github.com/openaccounting/oa-server/core/util/id"
	"gorm.io/gorm"
)

type Base struct {
	ID []byte `gorm:"type:BINARY(16);primaryKey"`
}

// GetUUID converts binary ID to UUID
func (b *Base) GetUUID() (uuid.UUID, error) {
	return id.ToUUID(b.ID)
}

// GetIDString returns string representation of the ID
func (b *Base) GetIDString() string {
	return id.String(b.ID)
}

// SetIDFromString parses string UUID into binary ID
func (b *Base) SetIDFromString(s string) error {
	binID, err := id.FromString(s)
	if err != nil {
		return err
	}
	b.ID = binID
	return nil
}

// ValidateID checks if the ID is a valid UUID
func (b *Base) ValidateID() error {
	_, err := uuid.FromBytes(b.ID)
	return err
}

// BeforeCreate GORM hook to set ID if empty
func (b *Base) BeforeCreate(tx *gorm.DB) error {
	if len(b.ID) == 0 {
		b.ID = id.New()
	}
	return nil
}