"""add persistent outbox delivery deduplication"""
from alembic import op

revision = "20260909_outbox_delivery"
down_revision = "20260909_agent_platform_v31"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.execute("""CREATE TABLE outbox_delivery (
        id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
        event_id CHAR(36) NOT NULL,
        consumer_name VARCHAR(64) NOT NULL,
        delivered_at DATETIME(6) NOT NULL,
        PRIMARY KEY (id), UNIQUE KEY uk_outbox_delivery_event_consumer (event_id, consumer_name)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4""")


def downgrade() -> None:
    op.execute("DROP TABLE outbox_delivery")