remove changelly fiat option

closes #728

BTCPayServer/Controllers/StoresController.Changelly.cs

@@ -33,8 +33,6 @@ namespace BTCPayServer.Controllers
             vm.ChangellyMerchantId = existing.ChangellyMerchantId;
             vm.Enabled = existing.Enabled;
             vm.AmountMarkupPercentage = existing.AmountMarkupPercentage;
-            vm.ShowFiat = existing.ShowFiat;
-
         }
 
         [HttpPost]
@@ -60,8 +58,7 @@ namespace BTCPayServer.Controllers
                 ApiUrl = vm.ApiUrl,
                 ChangellyMerchantId = vm.ChangellyMerchantId,
                 Enabled = vm.Enabled,
-                AmountMarkupPercentage = vm.AmountMarkupPercentage,
-                ShowFiat = vm.ShowFiat
+                AmountMarkupPercentage = vm.AmountMarkupPercentage
             };
             
             switch (command)

BTCPayServer/Models/StoreViewModels/UpdateChangellySettingsViewModel.cs

@@ -17,9 +17,6 @@ namespace BTCPayServer.Models.StoreViewModels
         [Display(Name = "Optional, Changelly Merchant Id")]
         public string ChangellyMerchantId { get; set; }
 
-        [Display(Name = "Show Fiat Currencies as option in conversion")]
-        public bool ShowFiat { get; set; } = true;
-
         [Required]
         [Range(0, 100)]
         [Display(Name =

BTCPayServer/Payments/Changelly/Changelly.cs

@@ -16,13 +16,11 @@ namespace BTCPayServer.Payments.Changelly
     public class Changelly
     {
         private readonly string _apisecret;
-        private readonly bool _showFiat;
         private readonly HttpClient _httpClient;
 
-        public Changelly(HttpClient httpClient,  string apiKey, string apiSecret, string apiUrl, bool showFiat = true)
+        public Changelly(HttpClient httpClient,  string apiKey, string apiSecret, string apiUrl)
         {
             _apisecret = apiSecret;
-            _showFiat = showFiat;
             _httpClient = httpClient;
             _httpClient.BaseAddress = new Uri(apiUrl);
             _httpClient.DefaultRequestHeaders.Add("api-key", apiKey);
@@ -62,36 +60,16 @@ namespace BTCPayServer.Payments.Changelly
 
         public virtual async Task<IEnumerable<CurrencyFull>> GetCurrenciesFull()
         {
-                const string message = @"{
+            const string message = @"{
 		            ""jsonrpc"": ""2.0"",
 		            ""id"": 1,
 		            ""method"": ""getCurrenciesFull"",
 		            ""params"": []
 			    }";
 
-                var result = await PostToApi<IEnumerable<CurrencyFull>>(message);
-                var appendedResult = _showFiat
-                    ? result.Result.Concat(new[]
-                    {
-                        new CurrencyFull()
-                        {
-                            Enable = true,
-                            Name = "EUR",
-                            FullName = "Euro",
-                            PayInConfirmations = 0,
-                            ImageLink = "https://changelly.com/api/coins/eur.png"
-                        },
-                        new CurrencyFull()
-                        {
-                            Enable = true,
-                            Name = "USD",
-                            FullName = "US Dollar",
-                            PayInConfirmations = 0,
-                            ImageLink = "https://changelly.com/api/coins/usd.png"
-                        }
-                    })
-                    : result.Result;
-            return appendedResult;
+            var result = await PostToApi<IEnumerable<CurrencyFull>>(message);
+
+            return result.Result;
         }
 
         public virtual async Task<decimal> GetExchangeAmount(string fromCurrency,

BTCPayServer/Payments/Changelly/ChangellyClientProvider.cs

@@ -61,8 +61,9 @@ namespace BTCPayServer.Payments.Changelly
                 throw new ChangellyException("Changelly not enabled for this store");
             }
 
-            var changelly = new Changelly(_httpClientFactory.CreateClient("Changelly"), changellySettings.ApiKey, changellySettings.ApiSecret,
-                changellySettings.ApiUrl, changellySettings.ShowFiat);
+            var changelly = new Changelly(_httpClientFactory.CreateClient("Changelly"), changellySettings.ApiKey,
+                changellySettings.ApiSecret,
+                changellySettings.ApiUrl);
             _clientCache.AddOrReplace(storeId, changelly);
             return changelly;
         }

BTCPayServer/Payments/Changelly/ChangellySettings.cs

@@ -8,7 +8,6 @@ namespace BTCPayServer.Payments.Changelly
         public bool Enabled { get; set; }
         public string ChangellyMerchantId { get; set; }
         public decimal AmountMarkupPercentage { get; set; }
-        public bool ShowFiat { get; set; }
 
         public bool IsConfigured()
         {

BTCPayServer/Views/Stores/UpdateChangellySettings.cshtml

@@ -38,11 +38,6 @@
                 <input asp-for="AmountMarkupPercentage" class="form-control"/>
                 <span asp-validation-for="AmountMarkupPercentage" class="text-danger"></span>
             </div>
-            <div class="form-group">
-                <label asp-for="ShowFiat"></label>
-                <input asp-for="ShowFiat" class="form-check"/>
-                <span asp-validation-for="ShowFiat" class="text-danger"></span>
-            </div>
             <div class="form-group">
                 <label asp-for="Enabled"></label>
                 <input asp-for="Enabled" type="checkbox" class="form-check"/>