"""create dogs table

Revision ID: b7c8d9e0f1g2
Revises: 
Create Date: 2024-01-10 10:00:00.000000
"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.sql import func
import uuid

# revision identifiers
revision = 'b7c8d9e0f1g2'
down_revision = None
branch_labels = None
depends_on = None

def upgrade():
    op.create_table(
        'dogs',
        sa.Column('id', sa.String(), primary_key=True, default=lambda: str(uuid.uuid4())),
        sa.Column('breed_name', sa.String(), nullable=False, unique=True),
        sa.Column('origin', sa.String()),
        sa.Column('size', sa.String()),
        sa.Column('temperament', sa.String()),
        sa.Column('life_span', sa.String()),
        sa.Column('description', sa.String()),
        sa.Column('created_at', sa.DateTime(), server_default=sa.func.now()),
        sa.Column('updated_at', sa.DateTime(), server_default=sa.func.now(), onupdate=sa.func.now()),
        sa.PrimaryKeyConstraint('id')
    )
    
    op.create_index('ix_dogs_breed_name', 'dogs', ['breed_name'], unique=True)

def downgrade():
    op.drop_index('ix_dogs_breed_name', 'dogs')
    op.drop_table('dogs')