from models.invoice import Invoice, InvoiceLine
from decimal import Decimal

def invoice_from_quote(quote):
    inv = Invoice(
        client_id=quote.client_id,
        quote_id=quote.id
    )

    for item in quote.items:
        inv.lines.append(
            InvoiceLine(
                description=item.description,
                qty=item.qty,
                unit_price=item.unit_price
            )
        )

    inv.total = sum([Decimal(str(l.qty)) * Decimal(str(l.unit_price)) for l in inv.lines])
    return inv