"""Init

Revision ID: d266fdc61e99
Revises:
Create Date: 2025-05-27 18:04:22.279035

"""

from typing import Sequence, Union

import sqlalchemy as sa
import sqlmodel
from alembic import op

# revision identifiers, used by Alembic.
revision: str = "d266fdc61e99"
down_revision: Union[str, None] = None
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table(
        "author",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("name", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_author_id"), "author", ["id"], unique=False)
    op.create_table(
        "book",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("title", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
        sa.Column("description", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_book_id"), "book", ["id"], unique=False)
    op.create_table(
        "authorbooklink",
        sa.Column("author_id", sa.Integer(), nullable=False),
        sa.Column("book_id", sa.Integer(), nullable=False),
        sa.ForeignKeyConstraint(
            ["author_id"],
            ["author.id"],
        ),
        sa.ForeignKeyConstraint(
            ["book_id"],
            ["book.id"],
        ),
        sa.PrimaryKeyConstraint("author_id", "book_id"),
    )
    # ### end Alembic commands ###


def downgrade() -> None:
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_table("authorbooklink")
    op.drop_index(op.f("ix_book_id"), table_name="book")
    op.drop_table("book")
    op.drop_index(op.f("ix_author_id"), table_name="author")
    op.drop_table("author")
    # ### end Alembic commands ###
