package dbx

import (
	"fmt"
	"io"
	"strconv"

	"github.com/segmentio/ksuid"
)

func unmarshalKSUIDFromGQL(value any, unmarshal func([]byte) error) error {
	str, ok := value.(string)
	if !ok {
		return fmt.Errorf("GraphQL failed to unmarshal KSUID value: %v", value)
	}
	return unmarshal([]byte(str))
}

// marshalKSUIDToGQL writes a JSON-encoded string scalar for gqlgen.
func marshalKSUIDToGQL(w io.Writer, id ksuid.KSUID) {
	quoted := strconv.Quote(id.String())
	if _, err := io.WriteString(w, quoted); err != nil {
		panic(fmt.Errorf("GraphQL failed to write KSUID value: %w", err))
	}
}

const (
	ksuidBinaryLength = 20
	ksuidStringLength = 27
)

func equalKSUID(lh, rh ksuid.KSUID) bool {
	if lh.IsNil() && rh.IsNil() {
		return true
	}
	return lh.String() == rh.String()
}