Additions to domain/ and workspace/ chron-note packages

chron-note/internal/domain/object.go

@@ -1 +1,74 @@
 package domain
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"strings"
+)
+
+type ObjectID [16]byte
+type BlobID [32]byte
+
+func NewObjectID() (ObjectID, error) {
+	var id ObjectID
+	_, err := rand.Read(id[:])
+	return id, err
+}
+
+func ParseObjectID(s string) (ObjectID, error) {
+	s = strings.TrimSpace(s)
+	b, err := hex.DecodeString(s)
+	if err != nil || len(b) != len(ObjectID{}) {
+		return ObjectID{}, ErrInvalidObjectID
+	}
+	var id ObjectID
+	copy(id[:], b)
+	return id, nil
+}
+
+func (id ObjectID) String() string { return hex.EncodeToString(id[:]) }
+
+func ParseBlobID(s string) (BlobID, error) {
+	s = strings.TrimSpace(s)
+	b, err := hex.DecodeString(s)
+	if err != nil || len(b) != len(BlobID{}) {
+		return BlobID{}, ErrInvalidBlobID
+	}
+	var id BlobID
+	copy(id[:], b)
+	return id, nil
+}
+
+func (id BlobID) String() string { return hex.EncodeToString(id[:]) }
+
+type ObjectState struct {
+	ID      ObjectID
+	Name    string
+	Tags    []string
+	Blob    BlobID
+	HasBlob bool
+	Deleted bool
+}
+
+// Keep normalization here so all layers agree.
+func NormalizeName(s string) string {
+	s = strings.TrimSpace(s)
+	return s
+}
+
+func NormalizeTags(tags []string) []string {
+	out := make([]string, 0, len(tags))
+	seen := make(map[string]struct{}, len(tags))
+	for _, t := range tags {
+		t = strings.TrimSpace(strings.ToLower(t))
+		if t == "" {
+			continue
+		}
+		if _, ok := seen[t]; ok {
+			continue
+		}
+		seen[t] = struct{}{}
+		out = append(out, t)
+	}
+	return out
+}