package layoutactivationsetv1

import (
	"crypto/sha256"
	"encoding/hex"
)

// SetDigest returns the exact lowercase content identity of a complete set.
func SetDigest(set Set) (string, error) {
	canonical, err := CanonicalSetBytes(set)
	if err != nil {
		return "", err
	}
	digest := sha256.Sum256(canonical)
	return "sha256:" + hex.EncodeToString(digest[:]), nil
}