"""Create sales order workflow tables.

Revision ID: 018_sales_order_workflow
Revises: 017_customers
Create Date: 2026-08-07
"""

from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "018_sales_order_workflow"
down_revision: Union[str, None] = "017_customers"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "sales_orders",
        sa.Column("id", sa.String(length=36), primary_key=True),
        sa.Column("company_id", sa.String(length=36), nullable=False),
        sa.Column("so_number", sa.String(length=50), nullable=False),
        sa.Column("customer_id", sa.String(length=36), nullable=False),
        sa.Column("warehouse_id", sa.String(length=36), nullable=True),
        sa.Column("order_date", sa.Date(), nullable=False),
        sa.Column("delivery_date", sa.Date(), nullable=True),
        sa.Column("delivery_address", sa.String(length=500), nullable=True),
        sa.Column("delivery_contact", sa.String(length=200), nullable=True),
        sa.Column("delivery_phone", sa.String(length=50), nullable=True),
        sa.Column("payment_terms", sa.String(length=30), nullable=True),
        sa.Column("currency", sa.String(length=10), nullable=False, server_default="PKR"),
        sa.Column("notes", sa.Text(), nullable=True),
        sa.Column("status", sa.String(length=40), nullable=False, server_default="draft"),
        sa.Column("subtotal", sa.Numeric(18, 2), nullable=False, server_default="0.00"),
        sa.Column("tax_amount", sa.Numeric(18, 2), nullable=False, server_default="0.00"),
        sa.Column("total_amount", sa.Numeric(18, 2), nullable=False, server_default="0.00"),
        sa.Column("created_by", sa.String(length=36), nullable=True),
        sa.Column("confirmed_at", sa.DateTime(), nullable=True),
        sa.Column("cancelled_at", sa.DateTime(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.Column("updated_at", sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(["company_id"], ["companies.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["customer_id"], ["customers.id"], ondelete="RESTRICT"),
        sa.ForeignKeyConstraint(["warehouse_id"], ["warehouses.id"], ondelete="SET NULL"),
        sa.UniqueConstraint("company_id", "so_number", name="uq_so_company_number"),
    )
    op.create_index("ix_so_company_id", "sales_orders", ["company_id"])
    op.create_index("ix_so_customer_id", "sales_orders", ["customer_id"])
    op.create_index("ix_so_status", "sales_orders", ["status"])
    op.create_index("ix_so_warehouse_id", "sales_orders", ["warehouse_id"])

    op.create_table(
        "sales_order_lines",
        sa.Column("id", sa.String(length=36), primary_key=True),
        sa.Column("sales_order_id", sa.String(length=36), nullable=False),
        sa.Column("line_number", sa.Integer(), nullable=False),
        sa.Column("item_id", sa.String(length=36), nullable=False),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("quantity", sa.Numeric(18, 4), nullable=False),
        sa.Column("reserved_quantity", sa.Numeric(18, 4), nullable=False, server_default="0.0000"),
        sa.Column("picked_quantity", sa.Numeric(18, 4), nullable=False, server_default="0.0000"),
        sa.Column("shipped_quantity", sa.Numeric(18, 4), nullable=False, server_default="0.0000"),
        sa.Column("invoiced_quantity", sa.Numeric(18, 4), nullable=False, server_default="0.0000"),
        sa.Column("available_quantity", sa.Numeric(18, 4), nullable=False, server_default="0.0000"),
        sa.Column("is_available", sa.Boolean(), nullable=False, server_default=sa.text("0")),
        sa.Column("unit_price", sa.Numeric(18, 4), nullable=False),
        sa.Column("tax_rate", sa.Numeric(18, 4), nullable=False, server_default="0.0000"),
        sa.Column("tax_amount", sa.Numeric(18, 2), nullable=False, server_default="0.00"),
        sa.Column("line_total", sa.Numeric(18, 2), nullable=False),
        sa.ForeignKeyConstraint(["sales_order_id"], ["sales_orders.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["item_id"], ["items.id"], ondelete="RESTRICT"),
    )
    op.create_index("ix_so_lines_so_id", "sales_order_lines", ["sales_order_id"])

    op.create_table(
        "sales_deliveries",
        sa.Column("id", sa.String(length=36), primary_key=True),
        sa.Column("company_id", sa.String(length=36), nullable=False),
        sa.Column("delivery_number", sa.String(length=50), nullable=False),
        sa.Column("sales_order_id", sa.String(length=36), nullable=False),
        sa.Column("customer_id", sa.String(length=36), nullable=False),
        sa.Column("delivery_date", sa.Date(), nullable=False),
        sa.Column("status", sa.String(length=30), nullable=False, server_default="draft"),
        sa.Column("notes", sa.Text(), nullable=True),
        sa.Column("confirmed_at", sa.DateTime(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.Column("updated_at", sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(["company_id"], ["companies.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["sales_order_id"], ["sales_orders.id"], ondelete="RESTRICT"),
        sa.ForeignKeyConstraint(["customer_id"], ["customers.id"], ondelete="RESTRICT"),
        sa.UniqueConstraint("company_id", "delivery_number", name="uq_dlv_company_number"),
    )
    op.create_index("ix_dlv_company_id", "sales_deliveries", ["company_id"])
    op.create_index("ix_dlv_so_id", "sales_deliveries", ["sales_order_id"])

    op.create_table(
        "sales_delivery_lines",
        sa.Column("id", sa.String(length=36), primary_key=True),
        sa.Column("sales_delivery_id", sa.String(length=36), nullable=False),
        sa.Column("sales_order_line_id", sa.String(length=36), nullable=False),
        sa.Column("line_number", sa.Integer(), nullable=False),
        sa.Column("item_id", sa.String(length=36), nullable=False),
        sa.Column("quantity", sa.Numeric(18, 4), nullable=False),
        sa.Column("notes", sa.Text(), nullable=True),
        sa.ForeignKeyConstraint(["sales_delivery_id"], ["sales_deliveries.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["sales_order_line_id"], ["sales_order_lines.id"], ondelete="RESTRICT"),
        sa.ForeignKeyConstraint(["item_id"], ["items.id"], ondelete="RESTRICT"),
    )
    op.create_index("ix_dlv_lines_dlv_id", "sales_delivery_lines", ["sales_delivery_id"])

    op.create_table(
        "sales_invoices",
        sa.Column("id", sa.String(length=36), primary_key=True),
        sa.Column("company_id", sa.String(length=36), nullable=False),
        sa.Column("invoice_number", sa.String(length=50), nullable=False),
        sa.Column("customer_id", sa.String(length=36), nullable=False),
        sa.Column("sales_order_id", sa.String(length=36), nullable=True),
        sa.Column("delivery_id", sa.String(length=36), nullable=True),
        sa.Column("invoice_date", sa.Date(), nullable=False),
        sa.Column("due_date", sa.Date(), nullable=True),
        sa.Column("status", sa.String(length=30), nullable=False, server_default="draft"),
        sa.Column("ar_account_id", sa.String(length=36), nullable=True),
        sa.Column("notes", sa.Text(), nullable=True),
        sa.Column("subtotal", sa.Numeric(18, 2), nullable=False, server_default="0.00"),
        sa.Column("tax_amount", sa.Numeric(18, 2), nullable=False, server_default="0.00"),
        sa.Column("total_amount", sa.Numeric(18, 2), nullable=False, server_default="0.00"),
        sa.Column("amount_paid", sa.Numeric(18, 2), nullable=False, server_default="0.00"),
        sa.Column("voucher_id", sa.String(length=36), nullable=True),
        sa.Column("posted_at", sa.DateTime(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.Column("updated_at", sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(["company_id"], ["companies.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["customer_id"], ["customers.id"], ondelete="RESTRICT"),
        sa.ForeignKeyConstraint(["sales_order_id"], ["sales_orders.id"], ondelete="SET NULL"),
        sa.ForeignKeyConstraint(["delivery_id"], ["sales_deliveries.id"], ondelete="SET NULL"),
        sa.UniqueConstraint("company_id", "invoice_number", name="uq_sales_invoices_company_number"),
    )
    op.create_index("ix_sales_invoices_company_id", "sales_invoices", ["company_id"])
    op.create_index("ix_sales_invoices_customer_id", "sales_invoices", ["customer_id"])
    op.create_index("ix_sales_invoices_status", "sales_invoices", ["status"])

    op.create_table(
        "sales_invoice_lines",
        sa.Column("id", sa.String(length=36), primary_key=True),
        sa.Column("sales_invoice_id", sa.String(length=36), nullable=False),
        sa.Column("line_number", sa.Integer(), nullable=False),
        sa.Column("item_id", sa.String(length=36), nullable=True),
        sa.Column("account_id", sa.String(length=36), nullable=True),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("quantity", sa.Numeric(18, 4), nullable=False, server_default="1.0000"),
        sa.Column("unit_price", sa.Numeric(18, 4), nullable=False),
        sa.Column("tax_rate", sa.Numeric(8, 4), nullable=False, server_default="0.0000"),
        sa.Column("line_total", sa.Numeric(18, 2), nullable=False),
        sa.Column("sales_order_line_id", sa.String(length=36), nullable=True),
        sa.Column("sales_delivery_line_id", sa.String(length=36), nullable=True),
        sa.ForeignKeyConstraint(["sales_invoice_id"], ["sales_invoices.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["item_id"], ["items.id"], ondelete="SET NULL"),
    )
    op.create_index("ix_sales_invoice_lines_invoice_id", "sales_invoice_lines", ["sales_invoice_id"])

    op.create_table(
        "sales_payments",
        sa.Column("id", sa.String(length=36), primary_key=True),
        sa.Column("company_id", sa.String(length=36), nullable=False),
        sa.Column("payment_number", sa.String(length=50), nullable=False),
        sa.Column("customer_id", sa.String(length=36), nullable=False),
        sa.Column("payment_date", sa.Date(), nullable=False),
        sa.Column("status", sa.String(length=30), nullable=False, server_default="draft"),
        sa.Column("payment_method", sa.String(length=30), nullable=False, server_default="bank"),
        sa.Column("bank_account_id", sa.String(length=36), nullable=True),
        sa.Column("ar_account_id", sa.String(length=36), nullable=True),
        sa.Column("reference", sa.String(length=200), nullable=True),
        sa.Column("notes", sa.Text(), nullable=True),
        sa.Column("total_amount", sa.Numeric(18, 2), nullable=False, server_default="0.00"),
        sa.Column("voucher_id", sa.String(length=36), nullable=True),
        sa.Column("posted_at", sa.DateTime(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.Column("updated_at", sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(["company_id"], ["companies.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["customer_id"], ["customers.id"], ondelete="RESTRICT"),
        sa.UniqueConstraint("company_id", "payment_number", name="uq_sales_payments_company_number"),
    )
    op.create_index("ix_sales_payments_company_id", "sales_payments", ["company_id"])
    op.create_index("ix_sales_payments_customer_id", "sales_payments", ["customer_id"])

    op.create_table(
        "sales_payment_allocations",
        sa.Column("id", sa.String(length=36), primary_key=True),
        sa.Column("sales_payment_id", sa.String(length=36), nullable=False),
        sa.Column("sales_invoice_id", sa.String(length=36), nullable=False),
        sa.Column("amount", sa.Numeric(18, 2), nullable=False),
        sa.ForeignKeyConstraint(["sales_payment_id"], ["sales_payments.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["sales_invoice_id"], ["sales_invoices.id"], ondelete="RESTRICT"),
    )
    op.create_index(
        "ix_sales_payment_alloc_payment_id", "sales_payment_allocations", ["sales_payment_id"]
    )


def downgrade() -> None:
    op.drop_table("sales_payment_allocations")
    op.drop_table("sales_payments")
    op.drop_table("sales_invoice_lines")
    op.drop_table("sales_invoices")
    op.drop_table("sales_delivery_lines")
    op.drop_table("sales_deliveries")
    op.drop_table("sales_order_lines")
    op.drop_table("sales_orders")