type Invoice {
  id: string;
  created: string;
  modified: string;
  status: InvoiceStatus;
  orgId: string;
  issued: string;
  ref: string;
  recipient?: Recipient;
  sender?: Sender;
  total: {
    amount: number;
    currency?: string;
  };
  lines: InvoiceLine[];
  routeRef?: string;
  error?: {
    name: string;
    message: string;
    description?: string;
  };
  invoiceSubmissionDate?: string;
  type?: InvoiceType;
}

type Recipient {
  taxId: string;
  name: string;
  address?: Address;
  contact?: {
    email?: string;
  };
}

type Sender {
  taxId: string;
  name: string;
  address?: Address;
  contact?: {
    email?: string;
  };
}

type Address {
  line1?: string;
  line2?: string;
  city?: string;
  state?: string;
  country: string;
  postalCode?: string;
}

type InvoiceLine {
  description: string;
  price: {
    amount: number;
  };
  quantity: number;
  unit?: UnitsOfMeasure;
  vat: {
    amount: number;
    type: 'fixed' | 'percent';
    code: TaxCode;
  };
}