"""Refactor Event/EventMedia relation

Revision ID: c571e4214528
Revises: d490cbfdea65
Create Date: 2025-07-04 06:08:57.004474

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import mysql

# revision identifiers, used by Alembic.
revision: str = 'c571e4214528'
down_revision: Union[str, None] = 'd490cbfdea65'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_foreign_key(None, 'clients', 'client_groups', ['group_id'], ['id'])
    op.drop_constraint(op.f('event_media_ibfk_1'), 'event_media', type_='foreignkey')
    op.drop_column('event_media', 'event_id')
    op.add_column('events', sa.Column('event_media_id', sa.Integer(), nullable=True))
    op.alter_column('events', 'group_id',
               existing_type=mysql.INTEGER(display_width=11),
               nullable=False)
    op.create_foreign_key(None, 'events', 'event_media', ['event_media_id'], ['id'])
    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_constraint(None, 'events', type_='foreignkey')
    op.alter_column('events', 'group_id',
               existing_type=mysql.INTEGER(display_width=11),
               nullable=True)
    op.drop_column('events', 'event_media_id')
    op.add_column('event_media', sa.Column('event_id', mysql.INTEGER(display_width=11), autoincrement=False, nullable=False))
    op.create_foreign_key(op.f('event_media_ibfk_1'), 'event_media', 'events', ['event_id'], ['id'])
    op.drop_constraint(None, 'clients', type_='foreignkey')
    # ### end Alembic commands ###