"""Backfill the namespace_user fields.

Revision ID: 3f4fe1194671
Revises: 6f2ecf5afcf
Create Date: 2014-09-24 14:29:45.192179

"""

# revision identifiers, used by Alembic.
revision = '3f4fe1194671'
down_revision = '6f2ecf5afcf'

from alembic import op
import sqlalchemy as sa


def upgrade(tables):
    conn = op.get_bind()
    conn.execute('update repository set namespace_user_id = (select id from user where user.username = repository.namespace) where namespace_user_id is NULL')

    op.alter_column('repository', 'namespace_user_id', nullable=False, existing_type=sa.Integer)
    op.create_index('repository_namespace_user_id_name', 'repository', ['namespace_user_id', 'name'], unique=True)


def downgrade(tables):
    op.drop_index('repository_namespace_user_id_name', table_name='repository')
    op.alter_column('repository', 'namespace_user_id', nullable=True, existing_type=sa.Integer, server_default=sa.text('NULL'))