From ae697928a6ebb052a25c2b3de41ae5b67bd34468 Mon Sep 17 00:00:00 2001
From: julian <julian@cypherstack.com>
Date: Wed, 8 Feb 2023 11:37:58 -0600
Subject: [PATCH] no caching or switching of currencies based on exchange
 selection

---
 lib/models/exchange/exchange_form_state.dart | 74 --------------------
 1 file changed, 74 deletions(-)

diff --git a/lib/models/exchange/exchange_form_state.dart b/lib/models/exchange/exchange_form_state.dart
index 94bcd09de..374875916 100644
--- a/lib/models/exchange/exchange_form_state.dart
+++ b/lib/models/exchange/exchange_form_state.dart
@@ -5,10 +5,8 @@ import 'package:stackwallet/models/exchange/response_objects/estimate.dart';
 import 'package:stackwallet/models/isar/exchange_cache/currency.dart';
 import 'package:stackwallet/models/isar/exchange_cache/pair.dart';
 import 'package:stackwallet/pages/exchange_view/sub_widgets/exchange_rate_sheet.dart';
-import 'package:stackwallet/services/exchange/change_now/change_now_exchange.dart';
 import 'package:stackwallet/services/exchange/exchange.dart';
 import 'package:stackwallet/services/exchange/exchange_data_loading_service.dart';
-import 'package:stackwallet/services/exchange/majestic_bank/majestic_bank_exchange.dart';
 import 'package:stackwallet/utilities/logger.dart';
 
 class ExchangeFormState extends ChangeNotifier {
@@ -175,16 +173,6 @@ class ExchangeFormState extends ChangeNotifier {
                     .rateTypeEqualTo(SupportedRateType.estimated))
             .findFirst();
       }
-      if (_sendCurrency == null) {
-        switch (exchange.name) {
-          case ChangeNowExchange.exchangeName:
-            _sendCurrency = _cachedSendCN;
-            break;
-          case MajesticBankExchange.exchangeName:
-            _sendCurrency = _cachedSendMB;
-            break;
-        }
-      }
 
       if (_receiveCurrency != null) {
         _receiveCurrency = await ExchangeDataLoadingService
@@ -206,23 +194,6 @@ class ExchangeFormState extends ChangeNotifier {
             .findFirst();
       }
 
-      if (_receiveCurrency == null) {
-        switch (exchange.name) {
-          case ChangeNowExchange.exchangeName:
-            _receiveCurrency = _cachedReceivingCN;
-            break;
-          case MajesticBankExchange.exchangeName:
-            _receiveCurrency = _cachedReceivingMB;
-            break;
-        }
-      }
-
-      _updateCachedCurrencies(
-        exchangeName: exchange.name,
-        send: _sendCurrency,
-        receiving: _receiveCurrency,
-      );
-
       await _updateRangesAndEstimate(
         shouldNotifyListeners: false,
       );
@@ -236,11 +207,6 @@ class ExchangeFormState extends ChangeNotifier {
   void setCurrencies(Currency from, Currency to) {
     _sendCurrency = from;
     _receiveCurrency = to;
-    _updateCachedCurrencies(
-      exchangeName: exchange.name,
-      send: _sendCurrency,
-      receiving: _receiveCurrency,
-    );
   }
 
   void reset({
@@ -324,12 +290,6 @@ class ExchangeFormState extends ChangeNotifier {
       _minSendAmount = null;
       _maxSendAmount = null;
 
-      _updateCachedCurrencies(
-        exchangeName: exchange.name,
-        send: _sendCurrency,
-        receiving: _receiveCurrency,
-      );
-
       if (_receiveCurrency == null) {
         _rate = null;
       } else {
@@ -354,12 +314,6 @@ class ExchangeFormState extends ChangeNotifier {
       _minReceiveAmount = null;
       _maxReceiveAmount = null;
 
-      _updateCachedCurrencies(
-        exchangeName: exchange.name,
-        send: _sendCurrency,
-        receiving: _receiveCurrency,
-      );
-
       if (_sendCurrency == null) {
         _rate = null;
       } else {
@@ -391,12 +345,6 @@ class ExchangeFormState extends ChangeNotifier {
     _sendCurrency = receiveCurrency;
     _receiveCurrency = tmp;
 
-    _updateCachedCurrencies(
-      exchangeName: exchange.name,
-      send: _sendCurrency,
-      receiving: _receiveCurrency,
-    );
-
     await _updateRangesAndEstimate(
       shouldNotifyListeners: false,
     );
@@ -542,28 +490,6 @@ class ExchangeFormState extends ChangeNotifier {
 
   //============================================================================
 
-  Currency? _cachedReceivingMB;
-  Currency? _cachedSendMB;
-  Currency? _cachedReceivingCN;
-  Currency? _cachedSendCN;
-
-  void _updateCachedCurrencies({
-    required String exchangeName,
-    required Currency? send,
-    required Currency? receiving,
-  }) {
-    switch (exchangeName) {
-      case ChangeNowExchange.exchangeName:
-        _cachedSendCN = send ?? _cachedSendCN;
-        _cachedReceivingCN = receiving ?? _cachedReceivingCN;
-        break;
-      case MajesticBankExchange.exchangeName:
-        _cachedSendMB = send ?? _cachedSendMB;
-        _cachedReceivingMB = receiving ?? _cachedReceivingMB;
-        break;
-    }
-  }
-
   void _notify() {
     debugPrint("ExFState NOTIFY: ${toString()}");
     notifyListeners();