"""user collections

Revision ID: 21750f5bbab1
Revises: cdd471f48b0d
Create Date: 2024-02-24 22:47:05.197801

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = '21750f5bbab1'
down_revision = 'cdd471f48b0d'
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('collection',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.PrimaryKeyConstraint('id')
    )
    with op.batch_alter_table('task', schema=None) as batch_op:
        batch_op.add_column(sa.Column('collection_id', sa.Integer(), nullable=True))
        batch_op.create_foreign_key(None, 'collection', ['collection_id'], ['id'])

    with op.batch_alter_table('user', schema=None) as batch_op:
        batch_op.add_column(sa.Column('collection_id', sa.Integer(), nullable=True))
        batch_op.drop_constraint('user_session_id_fkey', type_='foreignkey')
        batch_op.create_foreign_key(None, 'collection', ['collection_id'], ['id'])
        batch_op.drop_column('session_id')

    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    with op.batch_alter_table('user', schema=None) as batch_op:
        batch_op.add_column(sa.Column('session_id', sa.INTEGER(), autoincrement=False, nullable=True))
        batch_op.drop_constraint(None, type_='foreignkey')
        batch_op.create_foreign_key('user_session_id_fkey', 'session', ['session_id'], ['id'])
        batch_op.drop_column('collection_id')

    with op.batch_alter_table('task', schema=None) as batch_op:
        batch_op.drop_constraint(None, type_='foreignkey')
        batch_op.drop_column('collection_id')

    op.drop_table('collection')
    # ### end Alembic commands ###