"""create books table

Revision ID: b2c3d4e5f6g7
Revises: 
Create Date: 2024-01-09 10:00:00.000000
"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.sql import func
import uuid

# revision identifiers
revision = 'b2c3d4e5f6g7'
down_revision = None
branch_labels = None
depends_on = None

def upgrade():
    op.create_table(
        'books',
        sa.Column('id', sa.String(), primary_key=True, default=lambda: str(uuid.uuid4())),
        sa.Column('title', sa.String(), nullable=False),
        sa.Column('author', sa.String(), nullable=False),
        sa.Column('isbn', sa.String(), nullable=False),
        sa.Column('published_year', sa.Integer()),
        sa.Column('description', sa.String()),
        sa.Column('price', sa.Integer(), nullable=False),
        sa.Column('is_available', sa.Boolean(), default=True),
        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_books_title', 'books', ['title'])
    op.create_index('ix_books_isbn', 'books', ['isbn'], unique=True)

def downgrade():
    op.drop_index('ix_books_isbn', 'books')
    op.drop_index('ix_books_title', 'books')
    op.drop_table('books')