"""initial schema

Revision ID: 20231216_000000
Revises:
Create Date: 2023-12-16 00:00:00.000000

"""

from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = "20231216_000000"
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:
    # Create category table
    op.create_table(
        "category",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.Column("updated_at", sa.DateTime(), nullable=False),
        sa.Column("name", sa.String(length=100), nullable=False),
        sa.Column("description", sa.Text(), nullable=True),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_category_id"), "category", ["id"], unique=False)
    op.create_index(op.f("ix_category_name"), "category", ["name"], unique=True)

    # Create product table
    op.create_table(
        "product",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.Column("updated_at", sa.DateTime(), nullable=False),
        sa.Column("name", sa.String(length=255), nullable=False),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("price", sa.Float(), nullable=False),
        sa.Column("stock", sa.Integer(), nullable=False),
        sa.Column("image_url", sa.String(length=255), nullable=True),
        sa.Column("anime_title", sa.String(length=255), nullable=True),
        sa.Column("character_name", sa.String(length=255), nullable=True),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        op.f("ix_product_anime_title"), "product", ["anime_title"], unique=False
    )
    op.create_index(
        op.f("ix_product_character_name"), "product", ["character_name"], unique=False
    )
    op.create_index(op.f("ix_product_id"), "product", ["id"], unique=False)
    op.create_index(op.f("ix_product_name"), "product", ["name"], unique=False)

    # Create product_category association table
    op.create_table(
        "product_category",
        sa.Column("product_id", sa.Integer(), nullable=False),
        sa.Column("category_id", sa.Integer(), nullable=False),
        sa.ForeignKeyConstraint(
            ["category_id"],
            ["category.id"],
        ),
        sa.ForeignKeyConstraint(
            ["product_id"],
            ["product.id"],
        ),
        sa.PrimaryKeyConstraint("product_id", "category_id"),
    )


def downgrade() -> None:
    # Drop tables in reverse order
    op.drop_table("product_category")
    op.drop_index(op.f("ix_product_name"), table_name="product")
    op.drop_index(op.f("ix_product_id"), table_name="product")
    op.drop_index(op.f("ix_product_character_name"), table_name="product")
    op.drop_index(op.f("ix_product_anime_title"), table_name="product")
    op.drop_table("product")
    op.drop_index(op.f("ix_category_name"), table_name="category")
    op.drop_index(op.f("ix_category_id"), table_name="category")
    op.drop_table("category")