package dbx

import (
	"encoding/json"
	"fmt"
	"io"

	"github.com/segmentio/ksuid"
)

type ksuidGQLTransport struct {
	KSUIDStr string `json:"ksuid_str"`
}

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))
}

func marshalKSUIDToGQL(w io.Writer, id ksuid.KSUID) {
	transport := ksuidGQLTransport{KSUIDStr: id.String()}
	data, err := json.Marshal(transport)
	if err != nil {
		panic(fmt.Errorf("GraphQL failed to JSON-marshal KSUID value: %s", err))
	}
	if _, err := w.Write(data); err != nil {
		panic(fmt.Errorf("GraphQL failed to write KSUID value: %s", string(data)))
	}
}

const (
	ksuidBinaryLength = 20
	ksuidStringLength = 27
)