WIP checkpoint: Trust & Safety: Moderation data model + Alembic migration
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"""trust & safety schema
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Revision ID: 0003_trust_safety
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Revises: 0002_add_date_of_birth_to_users
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Create Date: 2025-01-01 00:00:00.000000
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"""
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from typing import Sequence, Union
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.dialects import postgresql
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# revision identifiers, used by Alembic.
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revision: str = "0003_trust_safety"
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down_revision: Union[str, None] = "0002_add_date_of_birth_to_users"
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def upgrade() -> None:
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"""Create trust & safety tables and extend users table."""
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# ── ENUM types ──────────────────────────────────────────────
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# role enum for users table
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user_role = postgresql.ENUM(
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"user", "moderator", "admin", name="user_role", create_type=True
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)
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user_role.create(op.get_bind(), checkfirst=True)
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# report target_type enum
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report_target_type = postgresql.ENUM(
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"user", "world", "asset", "chat_message",
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name="report_target_type", create_type=True,
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)
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report_target_type.create(op.get_bind(), checkfirst=True)
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# reason_category enum
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reason_category = postgresql.ENUM(
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"harassment", "hate_speech", "sexual_content", "violence",
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"spam", "self_harm", "other",
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name="reason_category", create_type=True,
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)
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reason_category.create(op.get_bind(), checkfirst=True)
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# report status enum
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report_status = postgresql.ENUM(
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"open", "in_review", "resolved", "dismissed",
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name="report_status", create_type=True,
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)
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report_status.create(op.get_bind(), checkfirst=True)
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# resolution enum
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resolution_enum = postgresql.ENUM(
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"action_taken", "no_action", "false_positive",
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name="resolution", create_type=True,
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)
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resolution_enum.create(op.get_bind(), checkfirst=True)
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# moderation action enum
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moderation_action = postgresql.ENUM(
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"warn", "suspend", "ban", "restrict", "remove", "restore",
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name="moderation_action", create_type=True,
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)
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moderation_action.create(op.get_bind(), checkfirst=True)
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# moderation target_type enum
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mod_target_type = postgresql.ENUM(
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"user", "world", "asset", "chat_message",
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name="moderation_target_type", create_type=True,
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)
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mod_target_type.create(op.get_bind(), checkfirst=True)
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# appeal status enum
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appeal_status = postgresql.ENUM(
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"pending", "approved", "rejected",
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name="appeal_status", create_type=True,
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)
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appeal_status.create(op.get_bind(), checkfirst=True)
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# ── Extend users table ──────────────────────────────────────
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op.add_column(
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"users",
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sa.Column(
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"role",
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postgresql.ENUM("user", "moderator", "admin", name="user_role"),
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nullable=False,
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server_default="user",
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),
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)
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op.add_column(
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"users",
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sa.Column(
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"banned_until",
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sa.DateTime(timezone=True),
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nullable=True,
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),
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)
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op.add_column(
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"users",
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sa.Column(
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"suspended_until",
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sa.DateTime(timezone=True),
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nullable=True,
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),
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)
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# ── reports table ───────────────────────────────────────────
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op.create_table(
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"reports",
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sa.Column("id", sa.BigInteger(), primary_key=True, autoincrement=True),
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sa.Column("reporter_id", sa.Integer(), sa.ForeignKey("users.id"), nullable=False),
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sa.Column(
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"target_type",
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postgresql.ENUM(
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"user", "world", "asset", "chat_message", name="report_target_type"
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),
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nullable=False,
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),
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sa.Column("target_id", sa.String(length=64), nullable=False),
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sa.Column(
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"reason_category",
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postgresql.ENUM(
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"harassment", "hate_speech", "sexual_content", "violence",
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"spam", "self_harm", "other",
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name="reason_category",
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),
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nullable=False,
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),
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sa.Column(
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"details",
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sa.Text(),
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nullable=True,
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),
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sa.Column(
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"status",
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postgresql.ENUM(
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"open", "in_review", "resolved", "dismissed",
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name="report_status",
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),
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nullable=False,
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server_default="open",
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),
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sa.Column("resolved_by", sa.Integer(), sa.ForeignKey("users.id"), nullable=True),
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sa.Column(
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"resolution",
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postgresql.ENUM(
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"action_taken", "no_action", "false_positive",
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name="resolution",
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),
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nullable=True,
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),
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sa.Column("resolved_at", sa.DateTime(timezone=True), nullable=True),
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sa.Column(
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"created_at",
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sa.DateTime(timezone=True),
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server_default=sa.func.now(),
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nullable=False,
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),
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sa.Column(
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"updated_at",
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sa.DateTime(timezone=True),
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onupdate=sa.func.now(),
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nullable=True,
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),
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sa.UniqueConstraint(
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"reporter_id", "target_type", "target_id",
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name="uq_reporter_target",
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),
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)
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op.create_index(op.f("ix_reports_id"), "reports", ["id"], unique=False)
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op.create_index(op.f("ix_reports_reporter_id"), "reports", ["reporter_id"], unique=False)
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op.create_index(op.f("ix_reports_status"), "reports", ["status"], unique=False)
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# ── moderation_actions table ────────────────────────────────
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op.create_table(
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"moderation_actions",
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sa.Column("id", sa.BigInteger(), primary_key=True, autoincrement=True),
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sa.Column("moderator_id", sa.Integer(), sa.ForeignKey("users.id"), nullable=False),
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sa.Column("target_user_id", sa.Integer(), sa.ForeignKey("users.id"), nullable=True),
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sa.Column(
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"target_type",
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postgresql.ENUM(
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"user", "world", "asset", "chat_message",
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name="moderation_target_type",
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),
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nullable=False,
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),
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sa.Column("target_id", sa.String(length=64), nullable=True),
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sa.Column(
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"action",
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postgresql.ENUM(
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"warn", "suspend", "ban", "restrict", "remove", "restore",
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name="moderation_action",
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),
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nullable=False,
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),
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sa.Column("reason", sa.Text(), nullable=True),
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sa.Column("report_id", sa.Integer(), sa.ForeignKey("reports.id"), nullable=True),
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sa.Column("expires_at", sa.DateTime(timezone=True), nullable=True),
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sa.Column("revoked_at", sa.DateTime(timezone=True), nullable=True),
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sa.Column(
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"created_at",
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sa.DateTime(timezone=True),
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server_default=sa.func.now(),
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nullable=False,
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),
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)
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op.create_index(op.f("ix_moderation_actions_id"), "moderation_actions", ["id"], unique=False)
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op.create_index(op.f("ix_moderation_actions_moderator_id"), "moderation_actions", ["moderator_id"], unique=False)
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op.create_index(op.f("ix_moderation_actions_target_user_id"), "moderation_actions", ["target_user_id"], unique=False)
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op.create_index(op.f("ix_moderation_actions_report_id"), "moderation_actions", ["report_id"], unique=False)
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# ── appeals table ───────────────────────────────────────────
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op.create_table(
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"appeals",
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sa.Column("id", sa.BigInteger(), primary_key=True, autoincrement=True),
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sa.Column(
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"moderation_action_id",
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sa.Integer(),
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sa.ForeignKey("moderation_actions.id"),
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nullable=False,
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),
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sa.Column("user_id", sa.Integer(), sa.ForeignKey("users.id"), nullable=False),
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sa.Column("reason", sa.Text(), nullable=False),
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sa.Column(
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"status",
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postgresql.ENUM(
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"pending", "approved", "rejected",
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name="appeal_status",
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),
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nullable=False,
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server_default="pending",
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),
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sa.Column("reviewed_by", sa.Integer(), sa.ForeignKey("users.id"), nullable=True),
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sa.Column("reviewed_at", sa.DateTime(timezone=True), nullable=True),
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sa.Column(
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"created_at",
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sa.DateTime(timezone=True),
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server_default=sa.func.now(),
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nullable=False,
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),
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)
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op.create_index(op.f("ix_appeals_id"), "appeals", ["id"], unique=False)
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op.create_index(op.f("ix_appeals_moderation_action_id"), "appeals", ["moderation_action_id"], unique=False)
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op.create_index(op.f("ix_appeals_user_id"), "appeals", ["user_id"], unique=False)
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op.create_index(op.f("ix_appeals_status"), "appeals", ["status"], unique=False)
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def downgrade() -> None:
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"""Drop trust & safety tables and revert users table."""
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# Drop indexes first
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op.drop_index(op.f("ix_appeals_status"), table_name="appeals")
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op.drop_index(op.f("ix_appeals_user_id"), table_name="appeals")
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op.drop_index(op.f("ix_appeals_moderation_action_id"), table_name="appeals")
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op.drop_index(op.f("ix_appeals_id"), table_name="appeals")
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op.drop_table("appeals")
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op.drop_index(op.f("ix_moderation_actions_report_id"), table_name="moderation_actions")
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op.drop_index(op.f("ix_moderation_actions_target_user_id"), table_name="moderation_actions")
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op.drop_index(op.f("ix_moderation_actions_moderator_id"), table_name="moderation_actions")
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op.drop_index(op.f("ix_moderation_actions_id"), table_name="moderation_actions")
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op.drop_table("moderation_actions")
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op.drop_index(op.f("ix_reports_status"), table_name="reports")
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op.drop_index(op.f("ix_reports_reporter_id"), table_name="reports")
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op.drop_index(op.f("ix_reports_id"), table_name="reports")
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op.drop_table("reports")
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# Remove columns from users table
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op.drop_column("users", "suspended_until")
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op.drop_column("users", "banned_until")
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op.drop_column("users", "role")
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# Drop ENUM types
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postgresql.ENUM(name="appeal_status").drop(op.get_bind(), checkfirst=True)
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postgresql.ENUM(name="moderation_target_type").drop(op.get_bind(), checkfirst=True)
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postgresql.ENUM(name="moderation_action").drop(op.get_bind(), checkfirst=True)
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postgresql.ENUM(name="resolution").drop(op.get_bind(), checkfirst=True)
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postgresql.ENUM(name="report_status").drop(op.get_bind(), checkfirst=True)
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postgresql.ENUM(name="reason_category").drop(op.get_bind(), checkfirst=True)
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postgresql.ENUM(name="report_target_type").drop(op.get_bind(), checkfirst=True)
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postgresql.ENUM(name="user_role").drop(op.get_bind(), checkfirst=True)
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