From c5895f78c2e475682cb7773e437e000c8413142e Mon Sep 17 00:00:00 2001
From: Sergey Chebotar <s.chebotar@gmail.com>
Date: Wed, 17 May 2023 08:11:24 +0300
Subject: [PATCH] =?UTF-8?q?Add=20=3D=D0=9A=D0=A3=D0=A0=D0=A1=D0=95=D0=92?=
 =?UTF-8?q?=D0=A0=D0=9E()=20function?=
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---
 .../AddIn/RhSolutionsFunction.cs              | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/RhSolutions.AddIn/AddIn/RhSolutionsFunction.cs b/RhSolutions.AddIn/AddIn/RhSolutionsFunction.cs
index bfac0b1..68acb10 100644
--- a/RhSolutions.AddIn/AddIn/RhSolutionsFunction.cs
+++ b/RhSolutions.AddIn/AddIn/RhSolutionsFunction.cs
@@ -185,4 +185,34 @@ public class RhSolutionsFunction
             }
         }
     }
+
+    [ExcelFunction(Description = "Получить курс евро по ЦБ")]
+    public static object КУРСЕВРО([ExcelArgument(Name = "ДАТА", Description = "Дата в формате Excel (необязательно)")] double dateField)
+    {
+        ICurrencyClient currencyClient = RhSolutionsAddIn.ServiceProvider.GetRequiredService<ICurrencyClient>();
+
+        if (ExcelAsyncUtil.Run("Database request", dateField, delegate
+        {
+            DateTime date = dateField == 0 ? DateTime.Now : DateTime.FromOADate(dateField);
+            var exchangeRate = currencyClient.GetCurrencyCourse(date)
+                .GetAwaiter()
+                .GetResult();
+
+            return exchangeRate ?? -1m;
+        }) is not decimal requestResult)
+        {
+            return "Загрузка...";
+        }
+        else
+        {
+            if (requestResult < 0)
+            {
+                return ExcelError.ExcelErrorNA;
+            }
+            else
+            {
+                return Math.Round(requestResult, 2);
+            }
+        }
+    }
 }
\ No newline at end of file