From 8c5ba5ad4d766304192bcbb26fca2d281348ba4f Mon Sep 17 00:00:00 2001
From: Matthias Sebastian Sort <mss@dynamicweb.dk>
Date: Mon, 15 Apr 2024 14:51:59 +0200
Subject: [PATCH 1/3] Added convertion of SqlDateTime.MinValue.Value to
 0001-01-01 and skipped the "z" at the end when we export data to OData.

---
 ...ataIntegration.Providers.ODataProvider.csproj |  2 +-
 src/ODataWriter.cs                               | 16 ++++++++++++++--
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/Dynamicweb.DataIntegration.Providers.ODataProvider.csproj b/src/Dynamicweb.DataIntegration.Providers.ODataProvider.csproj
index b67c586..b086fa6 100644
--- a/src/Dynamicweb.DataIntegration.Providers.ODataProvider.csproj
+++ b/src/Dynamicweb.DataIntegration.Providers.ODataProvider.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<Version>10.0.20</Version>
+		<Version>10.0.21</Version>
 		<AssemblyVersion>1.0.0.0</AssemblyVersion>
 		<Title>OData Provider</Title>
 		<Description>The Odata Provider lets you fetch and map data from or to any OData endpoint.</Description>
diff --git a/src/ODataWriter.cs b/src/ODataWriter.cs
index 493d9ef..8f601c8 100644
--- a/src/ODataWriter.cs
+++ b/src/ODataWriter.cs
@@ -8,6 +8,7 @@
 using Dynamicweb.Logging;
 using System;
 using System.Collections.Generic;
+using System.Data.SqlTypes;
 using System.Globalization;
 using System.Linq;
 using System.Net;
@@ -269,7 +270,7 @@ internal List<string> GetKeyColumnValuesForFilter(Dictionary<string, object> row
             }
             else if (keyMapping.DestinationColumn.Type == typeof(DateTime))
             {
-                keyColumnValues.Add($"{keyMapping.DestinationColumn.Name} eq {keyMapping.ConvertInputValueToOutputValue(GetTheDateTimeInZeroTimeZone(row[keyMapping.SourceColumn?.Name], false))}");
+                keyColumnValues.Add($"{keyMapping.DestinationColumn.Name} eq {GetTheDateTimeInZeroTimeZone(keyMapping.ConvertInputValueToOutputValue(row[keyMapping.SourceColumn?.Name]), false)}");
             }
             else
             {
@@ -318,7 +319,18 @@ internal string MapValuesToJSon(Dictionary<string, object> row, bool isPatchRequ
     public static string GetTheDateTimeInZeroTimeZone(object dateTimeObject, bool isEdmDate)
     {
         var dateTime = Converter.ToDateTime(dateTimeObject);
-        DateTime dateTimeInUtc = TimeZoneInfo.ConvertTimeToUtc(dateTime);
+        DateTime dateTimeInUtc;
+        if (SqlDateTime.MinValue.Value == dateTime || DateTime.MinValue == dateTime)
+        {
+            return DateTime.MinValue.ToString("yyyy-MM-dd");
+        }
+        else if (SqlDateTime.MaxValue.Value == dateTime || DateTime.MaxValue == dateTime)
+        {
+            return DateTime.MaxValue.ToString("yyyy-MM-dd");
+        }
+
+        dateTimeInUtc = TimeZoneInfo.ConvertTimeToUtc(dateTime);
+
         if (dateTimeInUtc.TimeOfDay.TotalMilliseconds > 0 && !isEdmDate)
         {
             return dateTimeInUtc.ToString("yyyy-MM-ddTHH:mm:ss.fff", CultureInfo.InvariantCulture) + "z";

From 6984284d67e1fe1b7f2eae2cbee1656e6884b264 Mon Sep 17 00:00:00 2001
From: Matthias Sebastian Sort <mss@dynamicweb.dk>
Date: Tue, 16 Apr 2024 10:13:04 +0200
Subject: [PATCH 2/3] removed "z" from dates in "yyyy-MM-dd" format

---
 src/ODataWriter.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ODataWriter.cs b/src/ODataWriter.cs
index 8f601c8..b8d9f61 100644
--- a/src/ODataWriter.cs
+++ b/src/ODataWriter.cs
@@ -337,7 +337,7 @@ public static string GetTheDateTimeInZeroTimeZone(object dateTimeObject, bool is
         }
         else
         {
-            return dateTimeInUtc.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture) + "z";
+            return dateTimeInUtc.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);
         }
     }
 

From 3263001c981f4225a7cca2e400cfdee9c9c18759 Mon Sep 17 00:00:00 2001
From: Matthias Sebastian Sort <mss@dynamicweb.dk>
Date: Tue, 16 Apr 2024 10:13:50 +0200
Subject: [PATCH 3/3] changed DateTime minvalue to return null instead.

---
 src/ODataWriter.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ODataWriter.cs b/src/ODataWriter.cs
index b8d9f61..17fbd42 100644
--- a/src/ODataWriter.cs
+++ b/src/ODataWriter.cs
@@ -322,7 +322,7 @@ public static string GetTheDateTimeInZeroTimeZone(object dateTimeObject, bool is
         DateTime dateTimeInUtc;
         if (SqlDateTime.MinValue.Value == dateTime || DateTime.MinValue == dateTime)
         {
-            return DateTime.MinValue.ToString("yyyy-MM-dd");
+            return null;
         }
         else if (SqlDateTime.MaxValue.Value == dateTime || DateTime.MaxValue == dateTime)
         {