"""Initial Migration

Revision ID: ad794cb94d9c
Revises:
Create Date: 2026-01-30 21:38:15.534474

"""

from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql

# revision identifiers, used by Alembic.
revision: str = "ad794cb94d9c"
down_revision: Union[str, Sequence[str], None] = None
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table(
        "categories",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("name", sa.Text(), nullable=True),
        sa.Column("parent_id", sa.Integer(), nullable=True),
        sa.ForeignKeyConstraint(
            ["parent_id"],
            ["categories.id"],
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_table(
        "orders",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("customer", sa.BigInteger(), nullable=True),
        sa.Column(
            "status",
            postgresql.ENUM(
                "CREATED",
                "PAID",
                "IN_PROGRESS",
                "CANCELLED",
                "DRAFT",
                name="order_status",
            ),
            nullable=False,
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_table(
        "products",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("category_id", sa.Integer(), nullable=True),
        sa.Column("name", sa.Text(), nullable=True),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("search_vector", postgresql.TSVECTOR(), nullable=False),
        sa.ForeignKeyConstraint(
            ["category_id"],
            ["categories.id"],
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        "idx_products_search",
        "products",
        ["search_vector"],
        unique=False,
        postgresql_using="gin",
    )
    op.create_table(
        "order_items",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("order_id", sa.Integer(), nullable=False),
        sa.Column("product_id", sa.Integer(), nullable=False),
        sa.Column("quantity", sa.Integer(), nullable=False),
        sa.ForeignKeyConstraint(
            ["order_id"],
            ["orders.id"],
        ),
        sa.ForeignKeyConstraint(
            ["product_id"],
            ["products.id"],
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_table("order_items")
    op.drop_index("idx_products_search", table_name="products", postgresql_using="gin")
    op.drop_table("products")
    op.drop_table("orders")
    op.drop_table("categories")
    # ### end Alembic commands ###