"""empty message

Revision ID: ea30c0b5b2e3
Revises: 497cfd2a02e2
Create Date: 2020-04-09 22:16:58.923473

"""
import sqlalchemy_utils
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = 'ea30c0b5b2e3'
down_revision = '497cfd2a02e2'
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('referral',
    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
    sa.Column('created_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
    sa.Column('updated_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=True),
    sa.Column('user_id', sa.Integer(), nullable=False),
    sa.Column('code', sa.String(length=128), nullable=False),
    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='cascade'),
    sa.PrimaryKeyConstraint('id'),
    sa.UniqueConstraint('code')
    )
    op.add_column('users', sa.Column('referral_id', sa.Integer(), nullable=True))
    op.create_foreign_key(None, 'users', 'referral', ['referral_id'], ['id'])
    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_constraint(None, 'users', type_='foreignkey')
    op.drop_column('users', 'referral_id')
    op.drop_table('referral')
    # ### end Alembic commands ###