"""Initial migration

Revision ID: 001
Revises:
Create Date: 2024-01-01 12:00:00.000000

"""

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 users table
    op.create_table(
        "users",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("email", sa.String(), nullable=False),
        sa.Column("hashed_password", sa.String(), nullable=False),
        sa.Column("full_name", sa.String(), nullable=True),
        sa.Column("is_active", sa.Boolean(), nullable=True),
        sa.Column("is_superuser", sa.Boolean(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=True),
        sa.Column("updated_at", sa.DateTime(), nullable=True),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_users_email"), "users", ["email"], unique=True)
    op.create_index(op.f("ix_users_id"), "users", ["id"], unique=False)

    # Create categories table
    op.create_table(
        "categories",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("name", sa.String(), nullable=False),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=True),
        sa.Column("updated_at", sa.DateTime(), nullable=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(), nullable=False),
        sa.Column("contact_person", sa.String(), nullable=True),
        sa.Column("email", sa.String(), nullable=True),
        sa.Column("phone", sa.String(), nullable=True),
        sa.Column("address", sa.Text(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=True),
        sa.Column("updated_at", sa.DateTime(), nullable=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 items table
    op.create_table(
        "items",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("name", sa.String(), nullable=False),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("sku", sa.String(), nullable=False),
        sa.Column("barcode", sa.String(), nullable=True),
        sa.Column("unit_price", sa.Float(), nullable=False),
        sa.Column("cost_price", sa.Float(), nullable=True),
        sa.Column("quantity_in_stock", sa.Integer(), nullable=True),
        sa.Column("minimum_stock_level", sa.Integer(), nullable=True),
        sa.Column("maximum_stock_level", sa.Integer(), nullable=True),
        sa.Column("reorder_point", sa.Integer(), nullable=True),
        sa.Column("is_active", sa.Boolean(), nullable=True),
        sa.Column("category_id", sa.Integer(), nullable=True),
        sa.Column("supplier_id", sa.Integer(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=True),
        sa.Column("updated_at", sa.DateTime(), nullable=True),
        sa.ForeignKeyConstraint(
            ["category_id"],
            ["categories.id"],
        ),
        sa.ForeignKeyConstraint(
            ["supplier_id"],
            ["suppliers.id"],
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_items_barcode"), "items", ["barcode"], unique=True)
    op.create_index(op.f("ix_items_id"), "items", ["id"], unique=False)
    op.create_index(op.f("ix_items_name"), "items", ["name"], unique=False)
    op.create_index(op.f("ix_items_sku"), "items", ["sku"], unique=True)

    # Create stock_transactions table
    op.create_table(
        "stock_transactions",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("item_id", sa.Integer(), nullable=False),
        sa.Column(
            "transaction_type",
            sa.Enum("IN", "OUT", "ADJUSTMENT", name="transactiontype"),
            nullable=False,
        ),
        sa.Column("quantity", sa.Integer(), nullable=False),
        sa.Column("unit_cost", sa.Float(), nullable=True),
        sa.Column("reference_number", sa.String(), nullable=True),
        sa.Column("notes", sa.Text(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=True),
        sa.ForeignKeyConstraint(
            ["item_id"],
            ["items.id"],
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        op.f("ix_stock_transactions_id"), "stock_transactions", ["id"], unique=False
    )


def downgrade() -> None:
    op.drop_index(op.f("ix_stock_transactions_id"), table_name="stock_transactions")
    op.drop_table("stock_transactions")
    op.drop_index(op.f("ix_items_sku"), table_name="items")
    op.drop_index(op.f("ix_items_name"), table_name="items")
    op.drop_index(op.f("ix_items_id"), table_name="items")
    op.drop_index(op.f("ix_items_barcode"), table_name="items")
    op.drop_table("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")
    op.drop_index(op.f("ix_users_id"), table_name="users")
    op.drop_index(op.f("ix_users_email"), table_name="users")
    op.drop_table("users")