Line data    Source code

       1             : // Copyright 2023 The terCAD team. All rights reserved.
       2             : // Use of this source code is governed by a CC BY-NC-ND 4.0 license that can be found in the LICENSE file.
       3             : 
       4             : import 'package:app_finance/_classes/math/abstract_recalculation.dart';
       5             : import 'package:app_finance/_classes/storage/history_data.dart';
       6             : import 'package:app_finance/_classes/structure/account_app_data.dart';
       7             : import 'package:app_finance/_classes/structure/invoice_app_data.dart';
       8             : 
       9             : class InvoiceRecalculation extends AbstractRecalculation {
      10             :   InvoiceAppData change;
      11             :   InvoiceAppData? initial;
      12             : 
      13           0 :   InvoiceRecalculation(this.change, [this.initial]);
      14             : 
      15           0 :   @override
      16           0 :   double getDelta() => throw UnimplementedError();
      17             : 
      18           0 :   double getPrevDelta() => initial?.hidden == true ? 0.0 : initial?.details;
      19             : 
      20           0 :   double getStateDelta(dynamic prev, dynamic curr) {
      21           0 :     double delta = change.hidden ? 0.0 : change.details;
      22           0 :     if (initial != null && prev?.uuid == curr?.uuid) {
      23             :       delta =
      24           0 :           change.hidden ? -initial?.details : (initial!.hidden ? change.details : change.details - initial?.details);
      25             :     }
      26             :     return delta;
      27             :   }
      28             : 
      29           0 :   void updateAccount(AccountAppData accountChange, AccountAppData? accountInitial, [bool reverse = false]) {
      30             :     double plex = reverse ? -1 : 1;
      31             :     double? diffDelta;
      32           0 :     if (accountInitial != null && initial != null && accountChange.uuid != accountInitial.uuid) {
      33           0 :       diffDelta = plex * getPrevDelta();
      34           0 :       HistoryData.addLog(accountInitial.uuid!, initial, 0.0, -diffDelta, initial!.uuid);
      35             :     }
      36           0 :     double delta = getStateDelta(accountInitial, accountChange);
      37           0 :     HistoryData.addLog(accountChange.uuid!, change, 0.0, delta * plex, change.uuid);
      38           0 :     if (diffDelta != null && accountInitial?.createdAt.isBefore(initial?.createdAt ?? DateTime.now()) == true) {
      39           0 :       accountInitial!.details -= plex * super.exchange.reform(diffDelta, initial?.currency, accountInitial.currency);
      40             :     }
      41           0 :     if (accountChange.createdAt.isBefore(change.createdAt)) {
      42           0 :       accountChange.details += plex * super.exchange.reform(delta, change.currency, accountChange.currency);
      43             :     }
      44             :   }
      45             : }