"""empty message

Revision ID: 7def3e843d04
Revises: dce69ad1e4eb
Create Date: 2019-01-28 20:27:33.760232

"""
import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision = '7def3e843d04'
down_revision = 'dce69ad1e4eb'
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('minetest_release',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('name', sa.String(length=100), nullable=False),
    sa.PrimaryKeyConstraint('id'),
    sa.UniqueConstraint('name')
    )
    op.add_column('package_release', sa.Column('max_rel_id', sa.Integer(), nullable=True, server_default=None))
    op.add_column('package_release', sa.Column('min_rel_id', sa.Integer(), nullable=True, server_default=None))
    op.create_foreign_key(None, 'package_release', 'minetest_release', ['max_rel_id'], ['id'])
    op.create_foreign_key(None, 'package_release', 'minetest_release', ['min_rel_id'], ['id'])
    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_constraint(None, 'package_release', type_='foreignkey')
    op.drop_constraint(None, 'package_release', type_='foreignkey')
    op.drop_column('package_release', 'min_rel_id')
    op.drop_column('package_release', 'max_rel_id')
    op.drop_table('minetest_release')
    # ### end Alembic commands ###
