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

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Python

"""trust & safety: reports, moderation_actions, appeals + user role/ban/suspend
Revision ID: 0003_trust_safety
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_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:
"""Create trust & safety tables and extend users table."""
bind = op.get_bind()
# ── ENUM types ──────────────────────────────────────────────────────
# user_role
user_role = postgresql.ENUM("user", "moderator", "admin", name="user_role")
user_role.create(bind, checkfirst=True)
# report_target_type
report_target_type = postgresql.ENUM(
"user", "world", "asset", "chat_message", name="report_target_type"
)
report_target_type.create(bind, checkfirst=True)
# reason_category
reason_category = postgresql.ENUM(
"harassment",
"hate_speech",
"sexual_content",
"violence",
"spam",
"self_harm",
"other",
name="reason_category",
)
reason_category.create(bind, checkfirst=True)
# report_status
report_status = postgresql.ENUM(
"open", "in_review", "resolved", "dismissed", name="report_status"
)
report_status.create(bind, checkfirst=True)
# resolution
resolution_enum = postgresql.ENUM(
"action_taken", "no_action", "false_positive", name="resolution"
)
resolution_enum.create(bind, checkfirst=True)
# moderation_action_type
moderation_action_type = postgresql.ENUM(
"warn", "suspend", "ban", "restrict", "remove", "restore",
name="moderation_action_type",
)
moderation_action_type.create(bind, checkfirst=True)
# moderation_target_type
moderation_target_type = postgresql.ENUM(
"user", "world", "asset", "chat_message", name="moderation_target_type"
)
moderation_target_type.create(bind, checkfirst=True)
# appeal_status
appeal_status = postgresql.ENUM(
"pending", "approved", "rejected", name="appeal_status"
)
appeal_status.create(bind, checkfirst=True)
# ── Extend users table ──────────────────────────────────────────────
op.add_column(
"users",
sa.Column(
"role",
postgresql.ENUM("user", "moderator", "admin", name="user_role"),
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(), nullable=False),
sa.Column(
"target_type",
postgresql.ENUM(
"user", "world", "asset", "chat_message", name="report_target_type"
),
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",
),
nullable=False,
),
sa.Column(
"details", sa.Text(), nullable=True,
),
sa.Column(
"status",
postgresql.ENUM(
"open", "in_review", "resolved", "dismissed", name="report_status"
),
nullable=False,
server_default="open",
),
sa.Column("resolved_by", sa.Integer(), nullable=True),
sa.Column(
"resolution",
postgresql.ENUM(
"action_taken", "no_action", "false_positive", name="resolution"
),
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(),
nullable=False,
),
sa.Column(
"updated_at",
sa.DateTime(timezone=True),
onupdate=sa.func.now(),
nullable=True,
),
sa.ForeignKeyConstraint(["reporter_id"], ["users.id"], ondelete="CASCADE"),
sa.ForeignKeyConstraint(["resolved_by"], ["users.id"], ondelete="SET NULL"),
sa.UniqueConstraint(
"reporter_id", "target_type", "target_id",
name="uq_reporter_target",
),
)
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
)
op.create_index(
op.f("ix_reports_status"), "reports", ["status"], 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(), nullable=False),
sa.Column("target_user_id", sa.Integer(), nullable=True),
sa.Column(
"target_type",
postgresql.ENUM(
"user", "world", "asset", "chat_message",
name="moderation_target_type",
),
nullable=False,
),
sa.Column("target_id", sa.String(length=64), nullable=True),
sa.Column(
"action",
postgresql.ENUM(
"warn", "suspend", "ban", "restrict", "remove", "restore",
name="moderation_action_type",
),
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(),
nullable=False,
),
sa.ForeignKeyConstraint(["moderator_id"], ["users.id"], ondelete="CASCADE"),
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,
)
op.create_index(
op.f("ix_moderation_actions_moderator_id"),
"moderation_actions",
["moderator_id"],
unique=False,
)
op.create_index(
op.f("ix_moderation_actions_target_user_id"),
"moderation_actions",
["target_user_id"],
unique=False,
)
op.create_index(
op.f("ix_moderation_actions_report_id"),
"moderation_actions",
["report_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(), 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"
),
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(),
nullable=False,
),
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)
op.create_index(
op.f("ix_appeals_moderation_action_id"),
"appeals",
["moderation_action_id"],
unique=False,
)
op.create_index(
op.f("ix_appeals_user_id"),
"appeals",
["user_id"],
unique=False,
)
op.create_index(
op.f("ix_appeals_status"),
"appeals",
["status"],
unique=False,
)
def downgrade() -> None:
"""Remove trust & safety tables and revert users table."""
op.drop_index(op.f("ix_appeals_status"), table_name="appeals")
op.drop_index(op.f("ix_appeals_user_id"), table_name="appeals")
op.drop_index(op.f("ix_appeals_moderation_action_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_report_id"), 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_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_status"), table_name="reports")
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(bind, checkfirst=True)
postgresql.ENUM(name="moderation_target_type").drop(bind, checkfirst=True)
postgresql.ENUM(name="moderation_action_type").drop(bind, checkfirst=True)
postgresql.ENUM(name="resolution").drop(bind, checkfirst=True)
postgresql.ENUM(name="report_status").drop(bind, checkfirst=True)
postgresql.ENUM(name="reason_category").drop(bind, checkfirst=True)
postgresql.ENUM(name="report_target_type").drop(bind, checkfirst=True)
postgresql.ENUM(name="user_role").drop(bind, checkfirst=True)