From be1128a886aaf8ff102a7ca83e1151dbe56fa485 Mon Sep 17 00:00:00 2001
From: rockstardev <rockstardev@users.noreply.github.com>
Date: Wed, 9 May 2018 22:39:13 -0500
Subject: [PATCH] Support for displaying fiat value of invoice

---
 BTCPayServer/Controllers/InvoiceController.UI.cs    | 6 ++++++
 BTCPayServer/Models/InvoicingModels/PaymentModel.cs | 1 +
 BTCPayServer/Views/Invoice/Checkout-Body.cshtml     | 8 +++++++-
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/BTCPayServer/Controllers/InvoiceController.UI.cs b/BTCPayServer/Controllers/InvoiceController.UI.cs
index b8d448739..47a9348c2 100644
--- a/BTCPayServer/Controllers/InvoiceController.UI.cs
+++ b/BTCPayServer/Controllers/InvoiceController.UI.cs
@@ -241,6 +241,7 @@ namespace BTCPayServer.Controllers
                 BtcAddress = paymentMethodDetails.GetPaymentDestination(),
                 OrderAmount = (accounting.TotalDue - accounting.NetworkFee).ToString(),
                 BtcDue = accounting.Due.ToString(),
+                FiatDue = FiatDue(accounting.Due, paymentMethod),
                 CustomerEmail = invoice.RefundMail,
                 RequiresRefundEmail = storeBlob.RequiresRefundEmail,
                 ExpirationSeconds = Math.Max(0, (int)(invoice.ExpirationTime - DateTimeOffset.UtcNow).TotalSeconds),
@@ -294,6 +295,11 @@ namespace BTCPayServer.Controllers
         {
             return price.ToString("C", _CurrencyNameTable.GetCurrencyProvider(currency)) + $" ({currency})";
         }
+        private string FiatDue(Money btcDue, PaymentMethod paymentMethod)
+        {
+            var currency = paymentMethod.ParentEntity.ProductInformation.Currency;
+            return FormatCurrency(btcDue.ToUnit(MoneyUnit.BTC) * paymentMethod.Rate, currency);
+        }
 
         [HttpGet]
         [Route("i/{invoiceId}/status")]
diff --git a/BTCPayServer/Models/InvoicingModels/PaymentModel.cs b/BTCPayServer/Models/InvoicingModels/PaymentModel.cs
index e3dcaf149..e9c49d6f6 100644
--- a/BTCPayServer/Models/InvoicingModels/PaymentModel.cs
+++ b/BTCPayServer/Models/InvoicingModels/PaymentModel.cs
@@ -36,6 +36,7 @@ namespace BTCPayServer.Models.InvoicingModels
         public string ItemDesc { get; set; }
         public string TimeLeft { get; set; }
         public string Rate { get; set; }
+        public string FiatDue { get; set; }
         public string OrderAmount { get; set; }
         public string InvoiceBitcoinUrl { get; set; }
         public string InvoiceBitcoinUrlQR { get; set; }
diff --git a/BTCPayServer/Views/Invoice/Checkout-Body.cshtml b/BTCPayServer/Views/Invoice/Checkout-Body.cshtml
index 05d2bf70b..a61f41176 100644
--- a/BTCPayServer/Views/Invoice/Checkout-Body.cshtml
+++ b/BTCPayServer/Views/Invoice/Checkout-Body.cshtml
@@ -74,7 +74,7 @@
             </div>
 
             <div class="single-item-order__right__ex-rate">
-                1 {{ srvModel.cryptoCode }} = {{ srvModel.rate }}
+                {{srvModel.fiatDue}}
             </div>
         </div>
 
@@ -83,6 +83,12 @@
     </div>
     <line-items>
         <div class="line-items">
+            <div class="line-items__item">
+                <div class="line-items__item__label">
+                    <span>{{$t("Exchange Rate")}}</span>
+                </div>
+                <div class="line-items__item__value">1 {{ srvModel.cryptoCode }} = {{ srvModel.rate }}</div>
+            </div>
             <div class="line-items__item">
                 <div class="line-items__item__label">{{$t("Order Amount")}}</div>
                 <div class="line-items__item__value">{{srvModel.orderAmount}} {{ srvModel.cryptoCode }}</div>