WIP checkpoint: Plan: Trust & Safety Operations

backend/alembic/env.py

@@ -8,7 +8,7 @@ from sqlalchemy.ext.asyncio import create_async_engine
 
 from app.config import settings
 from app.database import Base
-from app.models import user, session, world, asset, group  # noqa: F401
+from app.models import user, session, world, asset  # noqa: F401
 
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.

backend/alembic/versions/0001_initial.py

@@ -19,16 +19,16 @@ depends_on: Union[str, Sequence[str], None] = None
 
 def upgrade() -> None:
     """Upgrade database schema."""
-    # Create ENUM types (create once, reuse below)
+    # Create ENUM types
-    world_visibility_enum = postgresql.ENUM(
+    world_visibility = postgresql.ENUM(
         "public", "private", "friends_only", name="world_visibility"
     )
-    world_visibility_enum.create(op.get_bind(), checkfirst=True)
+    world_visibility.create(op.get_bind(), checkfirst=True)
 
-    asset_type_enum = postgresql.ENUM(
+    asset_type = postgresql.ENUM(
         "image", "audio", "video", "document", "model_3d", "other", name="asset_type"
     )
-    asset_type_enum.create(op.get_bind(), checkfirst=True)
+    asset_type.create(op.get_bind(), checkfirst=True)
 
     # Create users table
     op.create_table(
@@ -59,7 +59,7 @@ def upgrade() -> None:
     )
     op.create_index(op.f("ix_sessions_token"), "sessions", ["token"], unique=True)
 
-    # Create worlds table — reuse world_visibility_enum (no second create)
+    # Create worlds table
     op.create_table(
         "worlds",
         sa.Column("id", sa.Integer(), primary_key=True),
@@ -68,7 +68,9 @@ def upgrade() -> None:
         sa.Column("owner_id", sa.Integer(), nullable=False),
         sa.Column(
             "visibility",
-            world_visibility_enum,
+            postgresql.ENUM(
+                "public", "private", "friends_only", name="world_visibility"
+            ),
             nullable=True,
         ),
         sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
@@ -77,7 +79,7 @@ def upgrade() -> None:
     )
     op.create_index(op.f("ix_worlds_id"), "worlds", ["id"], unique=False)
 
-    # Create assets table — reuse asset_type_enum (no second create)
+    # Create assets table
     op.create_table(
         "assets",
         sa.Column("id", sa.Integer(), primary_key=True),
@@ -85,7 +87,10 @@ def upgrade() -> None:
         sa.Column("description", sa.Text(), nullable=True),
         sa.Column(
             "asset_type",
-            asset_type_enum,
+            postgresql.ENUM(
+                "image", "audio", "video", "document", "model_3d", "other",
+                name="asset_type",
+            ),
             nullable=False,
         ),
         sa.Column("file_path", sa.String(length=512), nullable=False),

backend/alembic/versions/0003_add_groups_and_members.py

@@ -1,78 +0,0 @@
-"""add groups and group_members tables
-
-Revision ID: 0003_add_groups_and_members
-Revises: 0002_add_date_of_birth_to_users
-Create Date: 2025-01-01 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.
-revision: str = "0003_add_groups_and_members"
-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:
-    """Create groups and group_members tables."""
-    # Create group_member_role ENUM type
-    group_member_role = postgresql.ENUM(
-        "owner", "admin", "member", name="group_member_role"
-    )
-    group_member_role.create(op.get_bind(), checkfirst=True)
-
-    # Create groups table
-    op.create_table(
-        "groups",
-        sa.Column("id", sa.Integer(), primary_key=True, index=True),
-        sa.Column("name", sa.String(length=255), nullable=False),
-        sa.Column("description", sa.Text(), nullable=True),
-        sa.Column(
-            "owner_id",
-            sa.Integer(),
-            sa.ForeignKey("users.id", ondelete="CASCADE"),
-            nullable=False,
-        ),
-        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(), onupdate=sa.func.now()),
-    )
-
-    # Create group_members table
-    op.create_table(
-        "group_members",
-        sa.Column(
-            "group_id",
-            sa.Integer(),
-            sa.ForeignKey("groups.id", ondelete="CASCADE"),
-            primary_key=True,
-        ),
-        sa.Column(
-            "user_id",
-            sa.Integer(),
-            sa.ForeignKey("users.id", ondelete="CASCADE"),
-            primary_key=True,
-        ),
-        sa.Column(
-            "role",
-            postgresql.ENUM(
-                "owner", "admin", "member", name="group_member_role", create_type=False
-            ),
-            nullable=False,
-            default="member",
-        ),
-        sa.Column("joined_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
-    )
-
-
-def downgrade() -> None:
-    """Drop group_members and groups tables."""
-    op.drop_table("group_members")
-    op.drop_table("groups")
-
-    # Drop group_member_role ENUM type
-    postgresql.ENUM(name="group_member_role").drop(op.get_bind(), checkfirst=True)

backend/app/models/__init__.py

@@ -2,6 +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.group import Group, GroupMember, GroupMemberRole
 
-__all__ = ["User", "Session", "World", "Asset", "Group", "GroupMember", "GroupMemberRole"]
+__all__ = ["User", "Session", "World", "Asset"]

backend/app/models/group.py

@@ -1,56 +0,0 @@
-import enum
-
-from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Enum
-from sqlalchemy.orm import relationship
-from sqlalchemy.sql import func
-
-from app.database import Base
-
-
-class GroupMemberRole(str, enum.Enum):
-    OWNER = "owner"
-    ADMIN = "admin"
-    MEMBER = "member"
-
-
-class Group(Base):
-    __tablename__ = "groups"
-
-    id = Column(Integer, primary_key=True, index=True)
-    name = Column(String(255), nullable=False)
-    description = Column(Text, nullable=True)
-    owner_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
-    created_at = Column(DateTime(timezone=True), server_default=func.now())
-    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
-
-    owner = relationship("User", back_populates="owned_groups")
-    members = relationship(
-        "GroupMember",
-        back_populates="group",
-        cascade="all, delete-orphan",
-        order_by="GroupMember.joined_at",
-    )
-
-
-class GroupMember(Base):
-    __tablename__ = "group_members"
-
-    group_id = Column(
-        Integer,
-        ForeignKey("groups.id", ondelete="CASCADE"),
-        primary_key=True,
-    )
-    user_id = Column(
-        Integer,
-        ForeignKey("users.id", ondelete="CASCADE"),
-        primary_key=True,
-    )
-    role = Column(
-        Enum(GroupMemberRole, name="group_member_role", create_type=False),
-        nullable=False,
-        default=GroupMemberRole.MEMBER,
-    )
-    joined_at = Column(DateTime(timezone=True), server_default=func.now())
-
-    group = relationship("Group", back_populates="members")
-    user = relationship("User", back_populates="group_memberships")

backend/app/models/user.py

@@ -23,8 +23,6 @@ class User(Base):
     sessions = relationship("Session", back_populates="user", cascade="all, delete-orphan")
     worlds = relationship("World", back_populates="owner")
     assets = relationship("Asset", back_populates="owner")
-    owned_groups = relationship("Group", back_populates="owner")
-    group_memberships = relationship("GroupMember", back_populates="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:
-      - "${POSTGRES_PORT:-5432}:5432"
+      - "5432:5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data
     healthcheck:
@@ -20,7 +20,7 @@ services:
   redis:
     image: redis:7-alpine
     ports:
-      - "${REDIS_PORT:-6379}:6379"
+      - "6379:6379"
     volumes:
       - redis_data:/data
     healthcheck:

docs/planning/trust_safety.md

@@ -0,0 +1,160 @@
+# Trust & Safety Operations — Plan
+
+> **Status:** Planned
+> **Owner:** Platform team
+> **Feature ID:** `trust_safety`
+> **Godot version:** 4.6.2 stable
+> **Backend:** FastAPI + SQLAlchemy (async) + PostgreSQL (+ Redis available, unused)
+> **Related:** `content_moderation.md` (M5 — content rating/flagging at upload time),
+> `social.md` (chat + report-message), `app/dependencies.py` (JWT auth)
+
+## 1. Overview
+
+This feature is the **enforcement workflow** for content/behavior that is
+**already live** and has been reported by a real user. M5
+(`content_moderation.md`) covers rating/flagging at authoring/upload time; this
+feature covers what happens **after** something is live and someone reports it:
+
+1. **Reporting** — report a user, an experience (world/asset), or a chat
+   message with a reason and optional detail.
+2. **Moderation queue** — staff review incoming reports, see report + target
+   context, and resolve them.
+3. **Ban / suspension** — apply a temporary suspension or permanent ban to a
+   user, with enforcement at the auth boundary.
+4. **Appeals** — a sanctioned user can appeal; staff can uphold or overturn.
+
+The userbase being 18+ does **not** shrink the moderation need — harassment,
+hate speech, spam, griefing, and CSAM/policy violations still require real
+enforcement. Safety is a **blocking requirement**, not an add-on.
+
+## 2. Existing constraints (do not re-build)
+
+- **Auth:** JWT bearer; `get_current_user` / `CurrentUser` in
+  `app/dependencies.py`. Every new endpoint reuses it.
+- **DB:** async SQLAlchemy + Alembic. Current head is `0002_add_date_of_birth_to_users`.
+- **Models:** `User`, `World` (owner_id), `Asset` (owner_id, is_public). There
+  is no `role` field yet, and no chat/message table yet (social.md is planned,
+  not built).
+- **Redis:** configured (`REDIS_URL`) but unused; not required by this feature.
+- **Client:** Godot 4.6.2, minimal `main_menu.gd`; no report/chat UI yet.
+
+## 3. Key design decisions
+
+| Concern | Decision |
+|---|---|
+| Report target addressing | Generic `target_type` + `target_id` (string) so user/world/asset/message all flow through one report path; router resolves target existence via a small registry |
+| Report reasons | Fixed enum `reason_category` (harassment, hate_speech, sexual_content, violence, spam, self_harm, other) + free-text `details` |
+| Staff roles | Add `role` enum on `User` (`user` / `moderator` / `admin`); `RequireStaff` dependency gates the queue/action/appeal-review endpoints |
+| Enforcement | Denormalized `banned_until` / `suspended_until` timestamps on `User` (kept in sync by moderation actions); `get_current_user` rejects sanctioned users with `403` so enforcement applies to **all** existing endpoints |
+| Ban vs. suspension | Suspension = temporary (`expires_at`); ban = permanent (`expires_at IS NULL`). Both are rows in `moderation_actions` for auditability |
+| Appeals | Appeal references the specific `moderation_action`; approving an appeal revokes the action and clears the user's sanction |
+| Audit | Every moderation action is an append-only row with `moderator_id`, `reason`, `created_at`, `revoked_at`; reports record `resolved_by` + `resolution` |
+
+## 4. Data model (target shape)
+
+```
+users
+  + role             ENUM(user, moderator, admin)  default 'user'
+  + banned_until     TIMESTAMPTZ  NULL
+  + suspended_until  TIMESTAMPTZ  NULL
+
+reports
+  id, reporter_id FK users, target_type ENUM(user,world,asset,chat_message),
+  target_id VARCHAR(64), reason_category ENUM(...), details TEXT,
+  status ENUM(open,in_review,resolved,dismissed) default 'open',
+  resolved_by FK users NULL, resolution ENUM(...) NULL,
+  created_at, updated_at, resolved_at
+
+moderation_actions
+  id, moderator_id FK users, target_user_id FK users,
+  target_type ENUM(user,world,asset,chat_message), target_id VARCHAR(64),
+  action ENUM(warn,suspend,ban,restrict,remove,restore),
+  reason TEXT, report_id FK reports NULL,
+  expires_at TIMESTAMPTZ NULL, revoked_at TIMESTAMPTZ NULL, created_at
+
+appeals
+  id, moderation_action_id FK moderation_actions,
+  user_id FK users, reason TEXT,
+  status ENUM(pending,approved,rejected) default 'pending',
+  reviewed_by FK users NULL, reviewed_at TIMESTAMPTZ NULL, created_at
+```
+
+## 5. User stories
+
+### US-1 Reporting
+As a player, I can report a user, an experience (world/asset), or a chat
+message, choosing a reason and adding optional detail.
+
+**Acceptance criteria**
+- Report requires a valid target of the matching type (404 otherwise) and a
+  reason from the fixed category set.
+- Duplicate reports from the same reporter for the same target are coalesced
+  (409) rather than creating unbounded duplicates.
+- A report cannot be filed by a banned/suspended user (enforced by existing auth).
+- Each report stores reporter, target, reason, and created_at; status starts `open`.
+
+### US-2 Moderation queue & review
+As a moderator, I can list open reports (filterable by type/status/reason),
+view a report with its target, and resolve it with an action.
+
+**Acceptance criteria**
+- Queue is staff-only (`RequireStaff`); non-staff get 403.
+- List supports status/type/reason filters + pagination (offset/limit).
+- Resolving sets `status`, `resolution`, `resolved_by`, `resolved_at` and
+  (where applicable) records a `moderation_actions` row.
+
+### US-3 Ban / suspension enforcement
+As a moderator, I can suspend a user temporarily or ban them permanently, and
+the sanction blocks the user from authenticated endpoints immediately.
+
+**Acceptance criteria**
+- Suspension sets `suspended_until`; ban sets `banned_until` (permanent). Warn
+  records an action without blocking.
+- `get_current_user` returns `403` for any user past a live sanction.
+- Expired suspensions no longer block (time-based, no cron required).
+- Removing a ban/suspension is itself a recorded `restore` action.
+
+### US-4 Appeals
+As a sanctioned user, I can appeal an active ban/suspension; as a moderator I
+can approve (overturn) or reject (uphold) it.
+
+**Acceptance criteria**
+- A user can submit exactly one open appeal per sanction.
+- Appeal is tied to the specific `moderation_action`.
+- Approving revokes the action and clears the user's sanction; rejecting
+  upholds it. Both record reviewer + timestamp.
+
+## 6. Task breakdown
+
+Right-sized to ~1–3 files / one coherent piece of functionality. Task IDs are
+dependency order.
+
+| # | Task | Story | Depends on |
+|---|------|-------|-----------|
+| 1 | Moderation data model + Alembic migration (reports, moderation_actions, appeals, user `role`/`banned_until`/`suspended_until`) | US-1..4 | — |
+| 2 | Staff authorization + sanction enforcement dependency (`RequireStaff`; extend `get_current_user` to reject sanctioned users) | US-2, US-3 | 1 |
+| 3 | Report submission endpoints (report user / experience / chat message) | US-1 | 1 |
+| 4 | Moderation queue + review endpoints (list, detail, resolve→action) | US-2 | 1, 2 |
+| 5 | Ban/suspend/restore action application + user-sanction sync | US-3 | 2, 4 |
+| 6 | Appeals endpoints (submit, list, review → uphold/overturn) | US-4 | 1, 5 |
+| 7 | Integration tests: report → review → ban → appeal → overturn | US-1..4 | 3, 4, 5, 6 |
+
+## 7. Phasing
+
+- **Phase 1 (data + enforcement core):** tasks 1–2. Land the schema and make
+  sanctioned users actually unable to act — highest value.
+- **Phase 2 (report → review → action):** tasks 3–5. The moderation loop.
+- **Phase 3 (appeals):** task 6.
+- **Phase 4 (verification):** task 7 integration tests.
+
+## 8. Out of scope for this feature
+
+- **Client (Godot) report/appeal UI** — no chat/social UI exists yet; report
+  endpoints are consumed once `social.md` US-6 lands. Client is a follow-up.
+- Automated content scanning / hash detection (covered by M5 /
+  `content_moderation.md`).
+- Third-party moderation/CSAM-scanning vendors.
+- Rate limiting of report submission (Redis is available; add a token-bucket
+  dependency later if abuse is observed).
+- Voice chat moderation.
+- Per-jurisdiction legal-takedown workflows (DMCA etc.).