"""add audit logs table

Revision ID: a1b2c3d4e5f6
Revises: 97e0aa47c003
Create Date: 2026-07-21 12:00:00.000000
"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


revision: str = 'a1b2c3d4e5f6'
down_revision: Union[str, None] = '97e0aa47c003'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        'audit_logs',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('user_id', sa.Integer(), nullable=True),
        sa.Column('username', sa.String(length=100), nullable=False, server_default=''),
        sa.Column('action', sa.String(length=64), nullable=False),
        sa.Column('target_type', sa.String(length=32), nullable=False, server_default=''),
        sa.Column('target_id', sa.String(length=64), nullable=False, server_default=''),
        sa.Column('detail', sa.Text(), nullable=False, server_default=''),
        sa.Column('ip', sa.String(length=64), nullable=False, server_default=''),
        sa.Column('user_agent', sa.String(length=255), nullable=False, server_default=''),
        sa.Column('status', sa.String(length=16), nullable=False, server_default='success'),
        sa.Column('created_at', sa.DateTime(), server_default=sa.func.now(), nullable=True),
        sa.PrimaryKeyConstraint('id'),
    )
    op.create_index('ix_audit_logs_id', 'audit_logs', ['id'])
    op.create_index('ix_audit_logs_user_id', 'audit_logs', ['user_id'])
    op.create_index('ix_audit_logs_action', 'audit_logs', ['action'])


def downgrade() -> None:
    op.drop_index('ix_audit_logs_action', table_name='audit_logs')
    op.drop_index('ix_audit_logs_user_id', table_name='audit_logs')
    op.drop_index('ix_audit_logs_id', table_name='audit_logs')
    op.drop_table('audit_logs')