DEFINITION MODULE Invoice;
FROM GenLists IMPORT GenList;
FROM ScrnTypes IMPORT DisplayFrame;
FROM DBFInvoice IMPORT InvoiceRec;
FROM DBFInvtry IMPORT InvtryRec;
FROM DBFOrder IMPORT OrderRec;
FROM NumTypes IMPORT Real8;
FROM SYSTEM IMPORT ADDRESS;

(* these types and variables were moved here to split the invoice module *)

TYPE

  FInvoice = RECORD   (* used with a group of invoices *)
    Invoice : InvoiceRec;
    LI      : LONGINT
  END;


  InvoiceItem = RECORD
    InventoryItem : InvtryRec;
    InventoryFilePos : LONGINT;
    ItemOrderRec  : OrderRec;
    BeenAdded     : BOOLEAN; (* once added - do not re-add the items*)
    OldQuant      : Real8;  (* used for update of items only *)
    GasPriced     : BOOLEAN;
    P1,P2,P3,P4   : Real8;  (* price table prices *)
    Q1,Q2,Q3,Q4   : CARDINAL; (* price table quantities *)
  END;

CONST
  Credit = 'CR';
  GasOut = 'G0';
  GasIn  = 'G1';
  SpecialOrd ='S';
VAR

 HeaderChanged : BOOLEAN;
 InvoiceHeadDF : DisplayFrame;
 OrderItemDF   : DisplayFrame;
 CurrentInvoice : InvoiceRec;
 CurrInvOldAmt  : Real8;    (* used if a printed invoice is
                               re-printed to compte ytd*)
 OrderItemLst  : GenList;  (* list of ordered items*)
 CurrentItem  : POINTER TO InvoiceItem;
 SummaryDF    : DisplayFrame;


PROCEDURE ReadHeader();
PROCEDURE Recompute();
PROCEDURE ControlInvoice(Ctl : CHAR);
PROCEDURE PayInvoice();
PROCEDURE Special(Item:ARRAY OF CHAR) : BOOLEAN;
PROCEDURE InvoiceHistory();
PROCEDURE GetOutstanding(CustID : ARRAY OF CHAR; VAR TheList : GenList);
  (* given a customer number -get a list of open invoices *)
PROCEDURE InvoiceDaysLate(Invoice : ADDRESS) : CARDINAL;
PROCEDURE MakeInvoicePrintLine(InvAddr : ADDRESS; VAR Line : ARRAY OF CHAR);
END Invoice.