"""community topics

Revision ID: fd5d3a9cb584
Revises: 328c9990e53e
Create Date: 2024-01-04 15:13:29.499990

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = 'fd5d3a9cb584'
down_revision = '328c9990e53e'
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('topic',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('name', sa.String(length=50), nullable=True),
    sa.Column('num_communities', sa.Integer(), nullable=True),
    sa.PrimaryKeyConstraint('id')
    )
    with op.batch_alter_table('community', schema=None) as batch_op:
        batch_op.add_column(sa.Column('topic_id', sa.Integer(), nullable=True))
        batch_op.create_index(batch_op.f('ix_community_topic_id'), ['topic_id'], unique=False)
        batch_op.create_foreign_key(None, 'topic', ['topic_id'], ['id'])


    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###

    with op.batch_alter_table('community', schema=None) as batch_op:
        batch_op.drop_constraint(None, type_='foreignkey')
        batch_op.drop_index(batch_op.f('ix_community_topic_id'))
        batch_op.drop_column('topic_id')

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