# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

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"""db: migration step after 95c01895c006 failed to add usk_public_key_idx in alembic step b74907136bc1

Revision ID: 4851d15bc437

Revises: 151b4a4e8c48

Create Date: 2019-11-24 02:51:14.029583

"""

# The following opaque hexadecimal identifiers ("revisions") are used

# by Alembic to track this migration script and its relations to others.

revision = '4851d15bc437'

down_revision = '151b4a4e8c48'

branch_labels = None

depends_on = None

import sqlalchemy as sa

from alembic import op

def upgrade():

    pass

    # The following upgrade step turned out to be a bad idea. A later step

    # "d7ec25b66e47_ssh_drop_usk_public_key_idx_again" will remove the index

    # again if it exists ... but we shouldn't even try to create it.

    #meta = sa.MetaData()

    #meta.reflect(bind=op.get_bind())

    #if not any(i.name == 'usk_public_key_idx' for i in meta.tables['user_ssh_keys'].indexes):

    #    with op.batch_alter_table('user_ssh_keys', schema=None) as batch_op:

    #        batch_op.create_index('usk_public_key_idx', ['public_key'], unique=False)

def downgrade():

    if any(i.name == 'usk_public_key_idx' for i in meta.tables['user_ssh_keys'].indexes):

        with op.batch_alter_table('user_ssh_keys', schema=None) as batch_op:

            batch_op.drop_index('usk_public_key_idx')