package common

import (
	"database/sql/driver"

	"github.com/oklog/ulid/v2"
)

// GUID our new ULID based datatype
type GUID ulid.ULID

// StringToGUID -> parse string to ULID GUID
func StringToGUID(s string) (GUID, error) {
	id, err := ulid.Parse(s) // maybe ParseStrict
	return GUID(id), err
}

// String Representation of Binary16
func (guid GUID) String() string {
	return ulid.ULID(guid).String()
}

// GormDataType sets type to binary(16)
func (guid GUID) GormDataType() string {
	return "binary(16)"
}

func (guid GUID) MarshalJSON() ([]byte, error) {
	str := "\"" + ulid.ULID(guid).String() + "\""
	return []byte(str), nil
}

func (guid *GUID) UnmarshalJSON(data []byte) error {
	id, err := ulid.Parse(string(data)) // maybe ParseStrict
	*guid = GUID(id)
	return err
}

// Scan tells GORM how to receive from the database
func (guid *GUID) Scan(value interface{}) error {
	converted := ulid.ULID(*guid)
	c := &converted
	err := c.Scan(value)
	*guid = GUID(*c)
	return err
}

// Value tells GORM how to save into the database
func (guid GUID) Value() (driver.Value, error) {
	return ulid.ULID(guid).Value()
}