Initial commit: Open sourcing all of the Maple Open Technologies code.

cloud/maplefile-backend/internal/repo/filemetadata/impl.go

@@ -0,0 +1,68 @@
+// monorepo/cloud/maplefile-backend/internal/maplefile/repo/filemetadata/impl.go
+package filemetadata
+
+import (
+	"encoding/json"
+
+	"github.com/gocql/gocql"
+	"go.uber.org/zap"
+
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/config"
+	dom_collection "codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/domain/collection"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/domain/crypto"
+	dom_file "codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/domain/file"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/domain/tag"
+)
+
+type fileMetadataRepositoryImpl struct {
+	Logger         *zap.Logger
+	Session        *gocql.Session
+	CollectionRepo dom_collection.CollectionRepository
+}
+
+func NewRepository(appCfg *config.Configuration, session *gocql.Session, loggerp *zap.Logger, collectionRepo dom_collection.CollectionRepository) dom_file.FileMetadataRepository {
+	loggerp = loggerp.Named("FileMetadataRepository")
+
+	return &fileMetadataRepositoryImpl{
+		Logger:         loggerp,
+		Session:        session,
+		CollectionRepo: collectionRepo,
+	}
+}
+
+// Helper functions for JSON serialization
+func (impl *fileMetadataRepositoryImpl) serializeEncryptedFileKey(key crypto.EncryptedFileKey) (string, error) {
+	data, err := json.Marshal(key)
+	return string(data), err
+}
+
+func (impl *fileMetadataRepositoryImpl) deserializeEncryptedFileKey(data string) (crypto.EncryptedFileKey, error) {
+	if data == "" {
+		return crypto.EncryptedFileKey{}, nil
+	}
+	var key crypto.EncryptedFileKey
+	err := json.Unmarshal([]byte(data), &key)
+	return key, err
+}
+
+func (impl *fileMetadataRepositoryImpl) serializeTags(tags []tag.EmbeddedTag) (string, error) {
+	if len(tags) == 0 {
+		return "[]", nil
+	}
+	data, err := json.Marshal(tags)
+	return string(data), err
+}
+
+func (impl *fileMetadataRepositoryImpl) deserializeTags(data string) ([]tag.EmbeddedTag, error) {
+	if data == "" || data == "[]" {
+		return []tag.EmbeddedTag{}, nil
+	}
+	var tags []tag.EmbeddedTag
+	err := json.Unmarshal([]byte(data), &tags)
+	return tags, err
+}
+
+// isValidUUID checks if UUID is not nil/empty
+func (impl *fileMetadataRepositoryImpl) isValidUUID(id gocql.UUID) bool {
+	return id.String() != "00000000-0000-0000-0000-000000000000"
+}