"""add sender_username and sender_name to messages

Revision ID: 0005
Revises: 0004
Create Date: 2026-05-06

"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "0005"
down_revision: Union[str, None] = "0004"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.add_column(
        "messages", sa.Column("sender_username", sa.String(length=64), nullable=True)
    )
    op.add_column(
        "messages", sa.Column("sender_name", sa.String(length=255), nullable=True)
    )


def downgrade() -> None:
    op.drop_column("messages", "sender_name")
    op.drop_column("messages", "sender_username")