Add migration for Book

alembic/versions/20250325_174544_eb3faae2_create_book.py

@@ -0,0 +1,49 @@
+"""create books table
+
+Revision ID: 1234567890ab
+Revises: 
+Create Date: 2023-05-20 10:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import uuid
+
+# revision identifiers
+revision = '1234567890ab'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # Create books table
+    op.create_table(
+        'books',
+        sa.Column('id', sa.String, primary_key=True, default=lambda: str(uuid.uuid4())),
+        sa.Column('title', sa.String, nullable=False, index=True),
+        sa.Column('description', sa.Text, nullable=True),
+        sa.Column('author', sa.String, nullable=False, index=True),
+        sa.Column('pages', sa.Integer, nullable=False),
+        sa.Column('user_id', sa.String, sa.ForeignKey('users.id')),
+        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()),
+    )
+    
+    # Create index on title
+    op.create_index('ix_books_title', 'books', ['title'])
+    
+    # Create index on author
+    op.create_index('ix_books_author', 'books', ['author'])
+
+
+def downgrade():
+    # Drop indexes
+    op.drop_index('ix_books_title', 'books')
+    op.drop_index('ix_books_author', 'books')
+    
+    # Drop table
+    op.drop_table('books')
+```
+
+This Alembic migration script creates a `books` table with the specified columns, including a primary key `id` with a UUID default value, indexes on `title` and `author`, a foreign key `user_id` referencing the `users` table, and timestamp columns `created_at` and `updated_at`. The `upgrade()` function creates the table and indexes, while the `downgrade()` function drops the indexes and the table.