Cw 1307 debug swap creation error (#2713)

* fix amount validator to include min and max values

* add BitcoinVN workaround

* fix Chainflip casting for decoded JSON

---------

Co-authored-by: Serhii-Borodenko <17529954+Serhii-Borodenko@users.noreply.github.com>

lib/core/amount_validator.dart

@@ -112,7 +112,7 @@ class AmountMinValidator extends Validator<String> {
       return false;
     }
 
-    return valueInDouble > minInDouble;
+    return valueInDouble >= minInDouble;
   }
 
   double? parseToDouble(String value) {
@@ -146,7 +146,7 @@ class AmountMaxValidator extends Validator<String> {
     if (valueInDouble == null || maxInDouble == null) {
       return false;
     }
-    return valueInDouble < maxInDouble;
+    return valueInDouble <= maxInDouble;
   }
 
   double? parseToDouble(String value) {

lib/exchange/provider/chainflip_exchange_provider.dart

@@ -388,7 +388,9 @@ class ChainflipExchangeProvider extends ExchangeProvider {
       throw Exception('Unexpected response: ${response.statusCode} / ${uri.toString()} / ${response.body}');
     }
 
-    final quotes = json.decode(response.body) as List<Map<String, dynamic>>;
+    final List<dynamic> jsonList = json.decode(response.body) as List<dynamic>;
+    final List<Map<String, dynamic>> quotes =
+    jsonList.map((e) => e as Map<String, dynamic>).toList();
 
     Map<String, dynamic> highestQuote = quotes.reduce((current, next) {
       double currentAmount = current['egressAmount'] as double;

lib/exchange/provider/trocador_exchange_provider.dart

@@ -114,8 +114,7 @@ class TrocadorExchangeProvider extends ExchangeProvider {
 
     return Limits(
       min: coinJson['minimum'] as double?,
-      // TODO: remove hardcoded value and call `api/new_rate` when Trocador adds min and max to it
-      max: from == CryptoCurrency.zano ? 2600 : coinJson['maximum'] as double?,
+      max: coinJson['maximum'] as double?,
     );
   }
 
@@ -276,7 +275,9 @@ class TrocadorExchangeProvider extends ExchangeProvider {
       throw Exception('No available provider is enabled');
     }
 
-    params['provider'] = _provider.first as String;
+    final provider = _provider.first as String;
+    // TODO : Remove this workaround when Trocador fixes BitcoinVN provider issue
+    params['provider'] = provider == 'BitcoinVN' ? '' : provider;
 
     final uri = await _getUri(createTradePath, params);
     final response = await ProxyWrapper().get(clearnetUri: uri, headers: {'API-Key': apiKey});