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

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

@@ -0,0 +1,38 @@
+// monorepo/cloud/maplefile-backend/internal/maplefile/repo/filemetadata/check.go
+package filemetadata
+
+import (
+	"fmt"
+
+	"github.com/gocql/gocql"
+)
+
+func (impl *fileMetadataRepositoryImpl) CheckIfExistsByID(id gocql.UUID) (bool, error) {
+	var count int
+
+	query := `SELECT COUNT(*) FROM maplefile.files_by_id WHERE id = ?`
+
+	if err := impl.Session.Query(query, id).Scan(&count); err != nil {
+		return false, fmt.Errorf("failed to check file existence: %w", err)
+	}
+
+	return count > 0, nil
+}
+
+func (impl *fileMetadataRepositoryImpl) CheckIfUserHasAccess(fileID gocql.UUID, userID gocql.UUID) (bool, error) {
+	// Check if user has access via the user sync table
+	var count int
+
+	query := `SELECT COUNT(*) FROM maplefile.files_by_user
+		WHERE user_id = ? AND id = ? LIMIT 1 ALLOW FILTERING`
+
+	err := impl.Session.Query(query, userID, fileID).Scan(&count)
+	if err != nil {
+		if err == gocql.ErrNotFound {
+			return false, nil
+		}
+		return false, fmt.Errorf("failed to check file access: %w", err)
+	}
+
+	return count > 0, nil
+}