"""Messages aux bénévoles

Revision ID: 0029_volunteer_messages
Revises: 0028_badge_field_z_order
Create Date: 2026-10-28

`edition.volunteer_message` : message de l'organisation, le même pour tous
les bénévoles, saisi par la coordination. `position.message` : message du
poste (consignes…), saisi par son référent, montré aux bénévoles affectés.
Chacun avec la date de sa dernière modification (`*_updated_at`).
"""

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op

revision: str = "0029_volunteer_messages"
down_revision: str | None = "0028_badge_field_z_order"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.add_column("edition", sa.Column("volunteer_message", sa.String(), nullable=True))
    op.add_column(
        "edition", sa.Column("volunteer_message_updated_at", sa.DateTime(), nullable=True)
    )
    op.add_column("position", sa.Column("message", sa.String(), nullable=True))
    op.add_column("position", sa.Column("message_updated_at", sa.DateTime(), nullable=True))


def downgrade() -> None:
    op.drop_column("position", "message_updated_at")
    op.drop_column("position", "message")
    op.drop_column("edition", "volunteer_message_updated_at")
    op.drop_column("edition", "volunteer_message")