WIP checkpoint: US-1: Asset Import Pipeline — glTF upload endpoint with metadata extraction

backend/alembic/versions/0001_initial.py

@@ -69,8 +69,7 @@ def upgrade() -> None:
         sa.Column(
             "visibility",
             postgresql.ENUM(
-                "public", "private", "friends_only", name="world_visibility",
+                "public", "private", "friends_only", name="world_visibility"
-                create_type=False,
             ),
             nullable=True,
         ),
@@ -90,7 +89,7 @@ def upgrade() -> None:
             "asset_type",
             postgresql.ENUM(
                 "image", "audio", "video", "document", "model_3d", "other",
-                name="asset_type", create_type=False,
+                name="asset_type",
             ),
             nullable=False,
         ),

backend/app/models/asset.py

@@ -3,6 +3,10 @@ from sqlalchemy.dialects.postgresql import ENUM
 from sqlalchemy.orm import relationship
 from sqlalchemy.sql import func
 import enum
+import json
+from typing import Optional, List
+
+from pydantic import BaseModel as PydanticBaseModel
 
 from app.database import Base
 
@@ -38,3 +42,31 @@ class Asset(Base):
 
     owner = relationship("User", back_populates="assets")
     world = relationship("World", back_populates="assets")
+
+
+class GLTFMetadata(PydanticBaseModel):
+    """Pydantic schema for glTF asset metadata."""
+    mesh_count: Optional[int] = None
+    vertex_count: Optional[int] = None
+    has_animation: bool = False
+    texture_refs: Optional[List[str]] = None
+    tags: Optional[List[str]] = None
+
+    model_config = {"from_attributes": True}
+
+
+def parse_metadata_json(metadata_text: Optional[str]) -> dict:
+    """Parse the metadata_json text field into a dict, handling None gracefully."""
+    if not metadata_text:
+        return {}
+    try:
+        return json.loads(metadata_text)
+    except (json.JSONDecodeError, TypeError):
+        return {}
+
+
+def serialize_metadata(metadata: dict) -> Optional[str]:
+    """Serialize metadata dict to JSON string for storage."""
+    if not metadata:
+        return None
+    return json.dumps(metadata)

backend/docker-compose.yml

@@ -8,7 +8,7 @@ services:
       POSTGRES_PASSWORD: agp_password
       POSTGRES_DB: agp_db
     ports:
-      - "${POSTGRES_HOST_PORT:-5432}:5432"
+      - "5432:5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data
     healthcheck:
@@ -20,7 +20,7 @@ services:
   redis:
     image: redis:7-alpine
     ports:
-      - "${REDIS_HOST_PORT:-6379}:6379"
+      - "6379:6379"
     volumes:
       - redis_data:/data
     healthcheck: