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modbison/backend/alembic/versions/0003_trust_safety.py
T

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Python

"""add trust & safety columns and tables
Revision ID: 0003_trust_safety
Revises: 0002_add_date_of_birth_to_users
Create Date: 2025-07-10 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_trust_safety"
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 role/banned_until/suspended_until to users, and create
reports, moderation_actions, and appeals tables."""
# ── ENUM types ──────────────────────────────────────────────
role_enum = postgresql.ENUM("user", "moderator", "admin", name="role")
role_enum.create(op.get_bind(), checkfirst=True)
target_type_enum = postgresql.ENUM(
"user", "world", "asset", "chat_message", name="target_type"
)
target_type_enum.create(op.get_bind(), checkfirst=True)
reason_category_enum = postgresql.ENUM(
"harassment",
"hate_speech",
"sexual_content",
"violence",
"spam",
"self_harm",
"other",
name="reason_category",
)
reason_category_enum.create(op.get_bind(), checkfirst=True)
report_status_enum = postgresql.ENUM(
"open", "in_review", "resolved", "dismissed", name="report_status"
)
report_status_enum.create(op.get_bind(), checkfirst=True)
resolution_enum = postgresql.ENUM(
"action_taken",
"action_not_needed",
"duplicate",
"escalated",
name="resolution",
)
resolution_enum.create(op.get_bind(), checkfirst=True)
moderation_action_enum = postgresql.ENUM(
"warn", "suspend", "ban", "restrict", "remove", "restore",
name="moderation_action",
)
moderation_action_enum.create(op.get_bind(), checkfirst=True)
appeal_status_enum = postgresql.ENUM(
"pending", "approved", "rejected", name="appeal_status"
)
appeal_status_enum.create(op.get_bind(), checkfirst=True)
# ── users table changes ─────────────────────────────────────
op.add_column(
"users",
sa.Column(
"role",
role_enum,
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.BigInteger(), primary_key=True, autoincrement=True),
sa.Column(
"reporter_id", sa.Integer(), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False
),
sa.Column(
"target_type",
target_type_enum,
nullable=False,
),
sa.Column("target_id", sa.String(length=64), nullable=False),
sa.Column(
"reason_category",
reason_category_enum,
nullable=False,
),
sa.Column("details", sa.Text(), nullable=True),
sa.Column(
"status",
report_status_enum,
nullable=False,
server_default="open",
),
sa.Column(
"resolved_by",
sa.Integer(),
sa.ForeignKey("users.id", ondelete="SET NULL"),
nullable=True,
),
sa.Column(
"resolution",
resolution_enum,
nullable=True,
),
sa.Column(
"created_at",
sa.DateTime(timezone=True),
server_default=sa.func.now(),
nullable=False,
),
sa.Column(
"updated_at",
sa.DateTime(timezone=True),
onupdate=sa.func.now(),
nullable=False,
),
sa.Column("resolved_at", sa.DateTime(timezone=True), nullable=True),
sa.UniqueConstraint("reporter_id", "target_type", "target_id"),
)
op.create_index(op.f("ix_reports_id"), "reports", ["id"], unique=False)
op.create_index(op.f("ix_reports_reporter_id"), "reports", ["reporter_id"], unique=False)
# ── moderation_actions table ────────────────────────────────
op.create_table(
"moderation_actions",
sa.Column("id", sa.BigInteger(), primary_key=True, autoincrement=True),
sa.Column(
"moderator_id",
sa.Integer(),
sa.ForeignKey("users.id", ondelete="CASCADE"),
nullable=False,
),
sa.Column(
"target_user_id",
sa.Integer(),
sa.ForeignKey("users.id", ondelete="SET NULL"),
nullable=True,
),
sa.Column(
"target_type",
target_type_enum,
nullable=False,
),
sa.Column("target_id", sa.String(length=64), nullable=False),
sa.Column(
"action",
moderation_action_enum,
nullable=False,
),
sa.Column("reason", sa.Text(), nullable=False),
sa.Column(
"report_id",
sa.Integer(),
sa.ForeignKey("reports.id", ondelete="SET NULL"),
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(),
nullable=False,
),
)
op.create_index(op.f("ix_moderation_actions_id"), "moderation_actions", ["id"], unique=False)
op.create_index(
op.f("ix_moderation_actions_moderator_id"),
"moderation_actions",
["moderator_id"],
unique=False,
)
# ── appeals table ───────────────────────────────────────────
op.create_table(
"appeals",
sa.Column("id", sa.BigInteger(), primary_key=True, autoincrement=True),
sa.Column(
"moderation_action_id",
sa.Integer(),
sa.ForeignKey("moderation_actions.id", ondelete="CASCADE"),
nullable=False,
),
sa.Column(
"user_id",
sa.Integer(),
sa.ForeignKey("users.id", ondelete="CASCADE"),
nullable=False,
),
sa.Column("reason", sa.Text(), nullable=False),
sa.Column(
"status",
appeal_status_enum,
nullable=False,
server_default="pending",
),
sa.Column(
"reviewed_by",
sa.Integer(),
sa.ForeignKey("users.id", ondelete="SET NULL"),
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(),
nullable=False,
),
sa.UniqueConstraint("moderation_action_id", "user_id"),
)
op.create_index(op.f("ix_appeals_id"), "appeals", ["id"], unique=False)
op.create_index(op.f("ix_appeals_user_id"), "appeals", ["user_id"], unique=False)
def downgrade() -> None:
"""Remove trust & safety tables and columns."""
op.drop_index(op.f("ix_appeals_user_id"), 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_moderator_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_reporter_id"), 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="moderation_action").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="role").drop(op.get_bind(), checkfirst=True)