"""Initial migration

Revision ID: 001
Revises:
Create Date: 2024-01-01 00:00:00.000000

"""

from alembic import op
import sqlalchemy as sa

# revision identifiers, used by Alembic.
revision = "001"
down_revision = None
branch_labels = None
depends_on = None


def upgrade() -> None:
    # Create categories table
    op.create_table(
        "categories",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("name", sa.String(length=100), nullable=False),
        sa.Column("description", sa.Text()),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("CURRENT_TIMESTAMP"),
        ),
        sa.Column("updated_at", sa.DateTime(timezone=True)),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_categories_id"), "categories", ["id"], unique=False)
    op.create_index(op.f("ix_categories_name"), "categories", ["name"], unique=True)

    # Create suppliers table
    op.create_table(
        "suppliers",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("name", sa.String(length=200), nullable=False),
        sa.Column("contact_person", sa.String(length=100)),
        sa.Column("email", sa.String(length=100)),
        sa.Column("phone", sa.String(length=20)),
        sa.Column("address", sa.Text()),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("CURRENT_TIMESTAMP"),
        ),
        sa.Column("updated_at", sa.DateTime(timezone=True)),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_suppliers_id"), "suppliers", ["id"], unique=False)
    op.create_index(op.f("ix_suppliers_name"), "suppliers", ["name"], unique=True)

    # Create inventory_items table
    op.create_table(
        "inventory_items",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("name", sa.String(length=200), nullable=False),
        sa.Column("sku", sa.String(length=50), nullable=False),
        sa.Column("description", sa.Text()),
        sa.Column("category_id", sa.Integer()),
        sa.Column("supplier_id", sa.Integer()),
        sa.Column("quantity", sa.Integer(), default=0),
        sa.Column("min_quantity", sa.Integer(), default=0),
        sa.Column("unit_price", sa.Float(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("CURRENT_TIMESTAMP"),
        ),
        sa.Column("updated_at", sa.DateTime(timezone=True)),
        sa.ForeignKeyConstraint(["category_id"], ["categories.id"]),
        sa.ForeignKeyConstraint(["supplier_id"], ["suppliers.id"]),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        op.f("ix_inventory_items_id"), "inventory_items", ["id"], unique=False
    )
    op.create_index(
        op.f("ix_inventory_items_name"), "inventory_items", ["name"], unique=False
    )
    op.create_index(
        op.f("ix_inventory_items_sku"), "inventory_items", ["sku"], unique=True
    )


def downgrade() -> None:
    op.drop_index(op.f("ix_inventory_items_sku"), table_name="inventory_items")
    op.drop_index(op.f("ix_inventory_items_name"), table_name="inventory_items")
    op.drop_index(op.f("ix_inventory_items_id"), table_name="inventory_items")
    op.drop_table("inventory_items")

    op.drop_index(op.f("ix_suppliers_name"), table_name="suppliers")
    op.drop_index(op.f("ix_suppliers_id"), table_name="suppliers")
    op.drop_table("suppliers")

    op.drop_index(op.f("ix_categories_name"), table_name="categories")
    op.drop_index(op.f("ix_categories_id"), table_name="categories")
    op.drop_table("categories")