"""Add explicit Agent identity to livechat policy."""

import sqlalchemy as sa
from alembic import op

revision = "179"
down_revision = "178"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column(
        "project_livechat_config",
        sa.Column("agent_id", sa.String(length=128), nullable=True),
    )
    op.add_column(
        "project_livechat_config",
        sa.Column("agent_version_id", sa.String(length=128), nullable=True),
    )


def downgrade() -> None:
    op.drop_column("project_livechat_config", "agent_version_id")
    op.drop_column("project_livechat_config", "agent_id")