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/alembic/versions/0003_add_moderation_tables_and_user_roles.py

@@ -1,277 +0,0 @@
-"""add moderation tables and user roles
-
-Revision ID: 0003_moderation_schema
-Revises: 0002_add_date_of_birth_to_users
-Create Date: 2025-01-02 00:00:00.000000
-
-"""
-from typing import Sequence, Union
-
-from alembic import op
-import sqlalchemy as sa
-from sqlalchemy.dialects import postgresql
-
-# revision identifiers, used by Alembic. Kept short deliberately: alembic's
-# own alembic_version.version_num column is VARCHAR(32) by default, and the
-# original "0003_add_moderation_tables_and_user_roles" (42 chars) exceeded
-# it -- migration ran to completion and then failed writing its own version
-# bookkeeping row. Verified 2026-08-19 against a genuinely fresh database.
-revision: str = "0003_moderation_schema"
-down_revision: Union[str, None] = "0002_add_date_of_birth_to_users"
-branch_labels: Union[str, Sequence[str], None] = None
-depends_on: Union[str, Sequence[str], None] = None
-
-
-def upgrade() -> None:
-    """Add moderation tables and user role/ban/suspend columns."""
-    # --- ENUM types ---
-
-    user_role = postgresql.ENUM("user", "moderator", "admin", name="user_role")
-    user_role.create(op.get_bind(), checkfirst=True)
-
-    target_type = postgresql.ENUM(
-        "user", "world", "asset", "chat_message", name="target_type"
-    )
-    target_type.create(op.get_bind(), checkfirst=True)
-
-    reason_category = postgresql.ENUM(
-        "harassment",
-        "hate_speech",
-        "sexual_content",
-        "violence",
-        "spam",
-        "self_harm",
-        "other",
-        name="reason_category",
-    )
-    reason_category.create(op.get_bind(), checkfirst=True)
-
-    report_status = postgresql.ENUM(
-        "open", "in_review", "resolved", "dismissed", name="report_status"
-    )
-    report_status.create(op.get_bind(), checkfirst=True)
-
-    resolution = postgresql.ENUM(
-        "action_taken", "dismissed", "no_violation", name="resolution"
-    )
-    resolution.create(op.get_bind(), checkfirst=True)
-
-    action_type = postgresql.ENUM(
-        "warn", "suspend", "ban", "restrict", "remove", "restore",
-        name="action_type",
-    )
-    action_type.create(op.get_bind(), checkfirst=True)
-
-    appeal_status = postgresql.ENUM(
-        "pending", "approved", "rejected", name="appeal_status"
-    )
-    appeal_status.create(op.get_bind(), checkfirst=True)
-
-    # --- Add columns to users table ---
-
-    op.add_column(
-        "users",
-        sa.Column(
-            "role",
-            postgresql.ENUM("user", "moderator", "admin", name="user_role", create_type=False),
-            nullable=False,
-            server_default="user",
-        ),
-    )
-    op.add_column("users", sa.Column("banned_until", sa.DateTime(timezone=True), nullable=True))
-    op.add_column("users", sa.Column("suspended_until", sa.DateTime(timezone=True), nullable=True))
-
-    # --- reports table ---
-
-    op.create_table(
-        "reports",
-        sa.Column("id", sa.Integer(), primary_key=True),
-        sa.Column("reporter_id", sa.Integer(), nullable=False),
-        sa.Column(
-            "target_type",
-            postgresql.ENUM(
-                "user", "world", "asset", "chat_message", name="target_type", create_type=False,
-            ),
-            nullable=False,
-        ),
-        sa.Column("target_id", sa.String(length=64), nullable=False),
-        sa.Column(
-            "reason_category",
-            postgresql.ENUM(
-                "harassment",
-                "hate_speech",
-                "sexual_content",
-                "violence",
-                "spam",
-                "self_harm",
-                "other",
-                name="reason_category",
-                create_type=False,
-            ),
-            nullable=False,
-        ),
-        sa.Column("details", sa.Text(), nullable=True),
-        sa.Column(
-            "status",
-            postgresql.ENUM(
-                "open", "in_review", "resolved", "dismissed", name="report_status", create_type=False,
-            ),
-            nullable=False,
-            server_default="open",
-        ),
-        sa.Column("resolved_by", sa.Integer(), nullable=True),
-        sa.Column(
-            "resolution",
-            postgresql.ENUM(
-                "action_taken", "dismissed", "no_violation", name="resolution", create_type=False,
-            ),
-            nullable=True,
-        ),
-        sa.Column("resolved_at", sa.DateTime(timezone=True), nullable=True),
-        sa.Column(
-            "created_at",
-            sa.DateTime(timezone=True),
-            server_default=sa.func.now(),
-        ),
-        sa.Column(
-            "updated_at",
-            sa.DateTime(timezone=True),
-            server_default=sa.func.now(),
-        ),
-        sa.ForeignKeyConstraint(["reporter_id"], ["users.id"], ondelete="CASCADE"),
-        sa.ForeignKeyConstraint(["resolved_by"], ["users.id"], ondelete="SET NULL"),
-    )
-    op.create_index(op.f("ix_reports_id"), "reports", ["id"], unique=False)
-    # Index on reports.status for filtering by status
-    op.create_index(op.f("ix_reports_status"), "reports", ["status"], unique=False)
-    # Composite index for duplicate detection on target
-    op.create_index(
-        op.f("ix_reports_target"), "reports", ["target_type", "target_id"], unique=False
-    )
-
-    # --- moderation_actions table ---
-
-    op.create_table(
-        "moderation_actions",
-        sa.Column("id", sa.Integer(), primary_key=True),
-        sa.Column("moderator_id", sa.Integer(), nullable=False),
-        sa.Column("target_user_id", sa.Integer(), nullable=False),
-        sa.Column(
-            "target_type",
-            postgresql.ENUM(
-                "user", "world", "asset", "chat_message", name="target_type", create_type=False,
-            ),
-            nullable=False,
-        ),
-        sa.Column("target_id", sa.String(length=64), nullable=False),
-        sa.Column(
-            "action",
-            postgresql.ENUM(
-                "warn", "suspend", "ban", "restrict", "remove", "restore",
-                name="action_type", create_type=False,
-            ),
-            nullable=False,
-        ),
-        sa.Column("reason", sa.Text(), nullable=True),
-        sa.Column("report_id", sa.Integer(), nullable=True),
-        sa.Column("expires_at", sa.DateTime(timezone=True), nullable=True),
-        sa.Column("revoked_at", sa.DateTime(timezone=True), nullable=True),
-        sa.Column(
-            "created_at",
-            sa.DateTime(timezone=True),
-            server_default=sa.func.now(),
-        ),
-        sa.ForeignKeyConstraint(["moderator_id"], ["users.id"], ondelete="SET NULL"),
-        sa.ForeignKeyConstraint(["target_user_id"], ["users.id"], ondelete="CASCADE"),
-        sa.ForeignKeyConstraint(["report_id"], ["reports.id"], ondelete="SET NULL"),
-    )
-    op.create_index(op.f("ix_moderation_actions_id"), "moderation_actions", ["id"], unique=False)
-    # Index on target_user_id for looking up actions against a user
-    op.create_index(
-        op.f("ix_moderation_actions_target_user_id"),
-        "moderation_actions",
-        ["target_user_id"],
-        unique=False,
-    )
-    # Index on revoked_at for finding expired/revoked actions
-    op.create_index(
-        op.f("ix_moderation_actions_revoked_at"),
-        "moderation_actions",
-        ["revoked_at"],
-        unique=False,
-    )
-
-    # --- appeals table ---
-
-    op.create_table(
-        "appeals",
-        sa.Column("id", sa.Integer(), primary_key=True),
-        sa.Column(
-            "moderation_action_id", sa.Integer(), nullable=False
-        ),
-        sa.Column("user_id", sa.Integer(), nullable=False),
-        sa.Column("reason", sa.Text(), nullable=False),
-        sa.Column(
-            "status",
-            postgresql.ENUM(
-                "pending", "approved", "rejected", name="appeal_status", create_type=False,
-            ),
-            nullable=False,
-            server_default="pending",
-        ),
-        sa.Column("reviewed_by", sa.Integer(), nullable=True),
-        sa.Column("reviewed_at", sa.DateTime(timezone=True), nullable=True),
-        sa.Column(
-            "created_at",
-            sa.DateTime(timezone=True),
-            server_default=sa.func.now(),
-        ),
-        sa.ForeignKeyConstraint(
-            ["moderation_action_id"],
-            ["moderation_actions.id"],
-            ondelete="CASCADE",
-        ),
-        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
-        sa.ForeignKeyConstraint(["reviewed_by"], ["users.id"], ondelete="SET NULL"),
-    )
-    op.create_index(op.f("ix_appeals_id"), "appeals", ["id"], unique=False)
-    # Index on appeals.status for filtering by status
-    op.create_index(op.f("ix_appeals_status"), "appeals", ["status"], unique=False)
-    # Index on moderation_action_id for looking up appeals against an action
-    op.create_index(
-        op.f("ix_appeals_moderation_action_id"),
-        "appeals",
-        ["moderation_action_id"],
-        unique=False,
-    )
-
-
-def downgrade() -> None:
-    """Downgrade database schema."""
-    op.drop_index(op.f("ix_appeals_moderation_action_id"), table_name="appeals")
-    op.drop_index(op.f("ix_appeals_status"), table_name="appeals")
-    op.drop_index(op.f("ix_appeals_id"), table_name="appeals")
-    op.drop_table("appeals")
-
-    op.drop_index(op.f("ix_moderation_actions_revoked_at"), table_name="moderation_actions")
-    op.drop_index(op.f("ix_moderation_actions_target_user_id"), table_name="moderation_actions")
-    op.drop_index(op.f("ix_moderation_actions_id"), table_name="moderation_actions")
-    op.drop_table("moderation_actions")
-
-    op.drop_index(op.f("ix_reports_target"), table_name="reports")
-    op.drop_index(op.f("ix_reports_status"), table_name="reports")
-    op.drop_index(op.f("ix_reports_id"), table_name="reports")
-    op.drop_table("reports")
-
-    op.drop_column("users", "suspended_until")
-    op.drop_column("users", "banned_until")
-    op.drop_column("users", "role")
-
-    # Drop ENUM types
-    postgresql.ENUM(name="appeal_status").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="action_type").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="resolution").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="report_status").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="reason_category").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="target_type").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="user_role").drop(op.get_bind(), checkfirst=True)

backend/app/models/__init__.py

@@ -2,14 +2,5 @@ from app.models.user import User
 from app.models.session import Session
 from app.models.world import World
 from app.models.asset import Asset
-from app.models.moderation import Report, ModerationAction, Appeal
 
-__all__ = [
+__all__ = ["User", "Session", "World", "Asset"]
-    "User",
-    "Session",
-    "World",
-    "Asset",
-    "Report",
-    "ModerationAction",
-    "Appeal",
-]

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/app/models/moderation.py

@@ -1,137 +0,0 @@
-from datetime import datetime
-from typing import Optional
-
-from sqlalchemy import Column, Integer, String, Text, ForeignKey, DateTime
-from sqlalchemy.dialects.postgresql import ENUM
-from sqlalchemy.orm import relationship
-from sqlalchemy.sql import func
-import enum
-
-from app.database import Base
-
-
-class TargetType(str, enum.Enum):
-    USER = "user"
-    WORLD = "world"
-    ASSET = "asset"
-    CHAT_MESSAGE = "chat_message"
-
-
-class ReasonCategory(str, enum.Enum):
-    HARASSMENT = "harassment"
-    HATE_SPEECH = "hate_speech"
-    SEXUAL_CONTENT = "sexual_content"
-    VIOLENCE = "violence"
-    SPAM = "spam"
-    SELF_HARM = "self_harm"
-    OTHER = "other"
-
-
-class ReportStatus(str, enum.Enum):
-    OPEN = "open"
-    IN_REVIEW = "in_review"
-    RESOLVED = "resolved"
-    DISMISSED = "dismissed"
-
-
-class Resolution(str, enum.Enum):
-    ACTION_TAKEN = "action_taken"
-    DISMISSED = "dismissed"
-    NO_VIOLATION = "no_violation"
-
-
-class ActionType(str, enum.Enum):
-    WARN = "warn"
-    SUSPEND = "suspend"
-    BAN = "ban"
-    RESTRICT = "restrict"
-    REMOVE = "remove"
-    RESTORE = "restore"
-
-
-class AppealStatus(str, enum.Enum):
-    PENDING = "pending"
-    APPROVED = "approved"
-    REJECTED = "rejected"
-
-
-class Report(Base):
-    __tablename__ = "reports"
-
-    id = Column(Integer, primary_key=True, index=True)
-    reporter_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
-    target_type = Column(
-        ENUM(TargetType, name="target_type", create_type=False),
-        nullable=False,
-    )
-    target_id = Column(String(64), nullable=False)
-    reason_category = Column(
-        ENUM(ReasonCategory, name="reason_category", create_type=False),
-        nullable=False,
-    )
-    details = Column(Text, nullable=True)
-    status = Column(
-        ENUM(ReportStatus, name="report_status", create_type=False),
-        default=ReportStatus.OPEN,
-        nullable=False,
-    )
-    resolved_by = Column(Integer, ForeignKey("users.id", ondelete="SET NULL"), nullable=True)
-    resolution = Column(
-        ENUM(Resolution, name="resolution", create_type=False),
-        nullable=True,
-    )
-    resolved_at = Column(DateTime(timezone=True), nullable=True)
-    created_at = Column(DateTime(timezone=True), server_default=func.now())
-    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
-
-    reporter = relationship("User", foreign_keys=[reporter_id])
-    resolved_by_user = relationship("User", foreign_keys=[resolved_by])
-    moderation_actions = relationship("ModerationAction", back_populates="report")
-
-
-class ModerationAction(Base):
-    __tablename__ = "moderation_actions"
-
-    id = Column(Integer, primary_key=True, index=True)
-    moderator_id = Column(Integer, ForeignKey("users.id", ondelete="SET NULL"), nullable=False)
-    target_user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
-    target_type = Column(
-        ENUM(TargetType, name="target_type", create_type=False),
-        nullable=False,
-    )
-    target_id = Column(String(64), nullable=False)
-    action = Column(
-        ENUM(ActionType, name="action_type", create_type=False),
-        nullable=False,
-    )
-    reason = Column(Text, nullable=True)
-    report_id = Column(Integer, ForeignKey("reports.id", ondelete="SET NULL"), nullable=True)
-    expires_at = Column(DateTime(timezone=True), nullable=True)
-    revoked_at = Column(DateTime(timezone=True), nullable=True)
-    created_at = Column(DateTime(timezone=True), server_default=func.now())
-
-    moderator = relationship("User", foreign_keys=[moderator_id])
-    target_user = relationship("User", foreign_keys=[target_user_id])
-    report = relationship("Report", back_populates="moderation_actions")
-    appeals = relationship("Appeal", back_populates="moderation_action")
-
-
-class Appeal(Base):
-    __tablename__ = "appeals"
-
-    id = Column(Integer, primary_key=True, index=True)
-    moderation_action_id = Column(Integer, ForeignKey("moderation_actions.id", ondelete="CASCADE"), nullable=False)
-    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
-    reason = Column(Text, nullable=False)
-    status = Column(
-        ENUM(AppealStatus, name="appeal_status", create_type=False),
-        default=AppealStatus.PENDING,
-        nullable=False,
-    )
-    reviewed_by = Column(Integer, ForeignKey("users.id", ondelete="SET NULL"), nullable=True)
-    reviewed_at = Column(DateTime(timezone=True), nullable=True)
-    created_at = Column(DateTime(timezone=True), server_default=func.now())
-
-    moderation_action = relationship("ModerationAction", back_populates="appeals")
-    user = relationship("User", foreign_keys=[user_id])
-    reviewed_by_user = relationship("User", foreign_keys=[reviewed_by])

backend/app/models/user.py

@@ -2,20 +2,12 @@ from datetime import date
 from typing import Optional
 
 from sqlalchemy import Column, Integer, String, Boolean, DateTime, Date
-from sqlalchemy.dialects.postgresql import ENUM
 from sqlalchemy.orm import relationship
 from sqlalchemy.sql import func
-import enum
 
 from app.database import Base
 
 
-class UserRole(str, enum.Enum):
-    USER = "user"
-    MODERATOR = "moderator"
-    ADMIN = "admin"
-
-
 class User(Base):
     __tablename__ = "users"
 
@@ -25,25 +17,12 @@ class User(Base):
     hashed_password = Column(String(255), nullable=False)
     date_of_birth = Column(Date, nullable=True)
     is_active = Column(Boolean, default=True)
-    role = Column(
-        ENUM(UserRole, name="user_role", create_type=False),
-        default=UserRole.USER,
-        nullable=False,
-    )
-    banned_until = Column(DateTime(timezone=True), nullable=True)
-    suspended_until = Column(DateTime(timezone=True), nullable=True)
     created_at = Column(DateTime(timezone=True), server_default=func.now())
     updated_at = Column(DateTime(timezone=True), onupdate=func.now())
 
     sessions = relationship("Session", back_populates="user", cascade="all, delete-orphan")
     worlds = relationship("World", back_populates="owner")
     assets = relationship("Asset", back_populates="owner")
-    reports_made = relationship("Report", foreign_keys="Report.reporter_id", back_populates="reporter")
-    reports_resolved = relationship("Report", foreign_keys="Report.resolved_by", back_populates="resolved_by_user")
-    moderation_actions_made = relationship("ModerationAction", foreign_keys="ModerationAction.moderator_id", back_populates="moderator")
-    moderation_actions_targeted = relationship("ModerationAction", foreign_keys="ModerationAction.target_user_id", back_populates="target_user")
-    appeals_made = relationship("Appeal", foreign_keys="Appeal.user_id", back_populates="user")
-    appeals_reviewed = relationship("Appeal", foreign_keys="Appeal.reviewed_by", back_populates="reviewed_by_user")
 
     @property
     def is_adult(self) -> bool:

backend/docker-compose.yml

@@ -8,7 +8,7 @@ services:
       POSTGRES_PASSWORD: agp_password
       POSTGRES_DB: agp_db
     ports:
-      - "55433:5432"
+      - "5432:5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data
     healthcheck: