(#210) Fixing UpdatedAt property in sample.

Datasync.Toolkit.sln

@@ -60,6 +60,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CommunityToolkit.Datasync.C
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CommunityToolkit.Datasync.Client.Test", "tests\CommunityToolkit.Datasync.Client.Test\CommunityToolkit.Datasync.Client.Test.csproj", "{2889E6B2-9CD1-437C-A43C-98CFAFF68B99}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{75F709FD-8CC2-4558-A802-FE57086167C2}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sample.Datasync.Server", "samples\datasync-server\src\Sample.Datasync.Server\Sample.Datasync.Server.csproj", "{A9967817-2A2C-4C6D-A133-967A6062E9B3}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -146,6 +150,10 @@ Global
 		{2889E6B2-9CD1-437C-A43C-98CFAFF68B99}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2889E6B2-9CD1-437C-A43C-98CFAFF68B99}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2889E6B2-9CD1-437C-A43C-98CFAFF68B99}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A9967817-2A2C-4C6D-A133-967A6062E9B3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A9967817-2A2C-4C6D-A133-967A6062E9B3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A9967817-2A2C-4C6D-A133-967A6062E9B3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A9967817-2A2C-4C6D-A133-967A6062E9B3}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -171,6 +179,7 @@ Global
 		{45D47A4E-AD58-40C8-B4CC-95BC888C47A7} = {84AD662A-4B9E-4E64-834D-72529FB7FCE5}
 		{D3B72031-D4BD-44D3-973C-2752AB1570F6} = {84AD662A-4B9E-4E64-834D-72529FB7FCE5}
 		{2889E6B2-9CD1-437C-A43C-98CFAFF68B99} = {D59F1489-5D74-4F52-B78B-88037EAB2838}
+		{A9967817-2A2C-4C6D-A133-967A6062E9B3} = {75F709FD-8CC2-4558-A802-FE57086167C2}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {78A935E9-8F14-448A-BEDF-360FB742F14E}

infra/scripts/write-runsettings.ps1

@@ -14,6 +14,7 @@ $fileContents = @"
       <DATASYNC_AZSQL_CONNECTIONSTRING>$($outputs.AZSQL_CONNECTION_STRING)</DATASYNC_AZSQL_CONNECTIONSTRING>
       <DATASYNC_COSMOS_CONNECTIONSTRING>$($outputs.COSMOS_CONNECTION_STRING)</DATASYNC_COSMOS_CONNECTIONSTRING>
       <DATASYNC_PGSQL_CONNECTIONSTRING>$($outputs.PGSQL_CONNECTION_STRING)</DATASYNC_PGSQL_CONNECTIONSTRING>
+      <DATASYNC_SERVICE_ENDPOINT>$($outputs.SERVICE_ENDPOINT)</DATASYNC_SERVICE_ENDPOINT>
       <ENABLE_SQL_LOGGING>true</ENABLE_SQL_LOGGING>
     </EnvironmentVariables>
   </RunConfiguration>

samples/datasync-server/src/Sample.Datasync.Server/Db/AppDbContext.cs

@@ -3,22 +3,54 @@
 // See the LICENSE file in the project root for more information.
 
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata;
+using System.Diagnostics.CodeAnalysis;
 
 namespace Sample.Datasync.Server.Db;
 
-public class AppDbContext : DbContext
+public class AppDbContext(DbContextOptions<AppDbContext> options) : DbContext(options)
 {
-    public AppDbContext(DbContextOptions<AppDbContext> options) : base(options) 
-    {
-
-    }
-
     public DbSet<TodoItem> TodoItems => Set<TodoItem>();
 
     public DbSet<TodoList> TodoLists => Set<TodoList>();
 
     public async Task InitializeDatabaseAsync() 
     {
         _ = await Database.EnsureCreatedAsync();
+
+        const string datasyncTrigger = @"
+            CREATE OR ALTER TRIGGER [dbo].[{0}_datasync] ON [dbo].[{0}] AFTER INSERT, UPDATE AS
+            BEGIN
+                SET NOCOUNT ON;
+                UPDATE
+                    [dbo].[{0}]
+                SET
+                    [UpdatedAt] = SYSUTCDATETIME()
+                WHERE
+                    [Id] IN (SELECT [Id] FROM INSERTED);
+            END
+        "
+        ;
+
+        // Install the above trigger to set the UpdatedAt field automatically on insert or update.
+        foreach (IEntityType table in Model.GetEntityTypes())
+        {
+            string sql = string.Format(datasyncTrigger, table.GetTableName());
+            _ = await Database.ExecuteSqlRawAsync(sql);
+        }
+    }
+
+    [SuppressMessage("Style", "IDE0058:Expression value is never used", Justification = "Model builder ignores return value.")]
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        // Tells EF Core that the TodoItem entity has a trigger.
+        modelBuilder.Entity<TodoItem>()
+            .ToTable(tb => tb.HasTrigger("TodoItem_datasync"));
+
+        // Tells EF Core that the TodoList entity has a trigger.
+        modelBuilder.Entity<TodoList>()
+            .ToTable(tb => tb.HasTrigger("TodoList_datasync"));
+
+        base.OnModelCreating(modelBuilder);
     }
 }

src/CommunityToolkit.Datasync.Client/Offline/OperationsQueue/OperationsQueueManager.cs

@@ -110,7 +110,7 @@ internal Dictionary<string, Type> GetEntityMap(OfflineDbContext context)
     /// <summary>
     /// Retrieves the existing operation that matches an operation for the provided entity.
     /// </summary>
-    /// <param name="entity">The entity being processed.</param>
+    /// <param name="entityEntry">The entity entry being processed.</param>
     /// <param name="cancellationToken">A <see cref="CancellationToken"/> to observe.</param>
     /// <returns>The operation entity or null if one does not exist.</returns>
     /// <exception cref="DatasyncException">Thrown if the entity ID of the provided entity is invalid.</exception>

tests/CommunityToolkit.Datasync.Client.Test/Live/SampleServerTests.cs

@@ -0,0 +1,50 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Net;
+using System.Net.Http.Json;
+
+namespace CommunityToolkit.Datasync.Client.Test.Live;
+
+[ExcludeFromCodeCoverage]
+public class SampleServerTests
+{
+    private readonly bool liveTestsAreEnabled = Environment.GetEnvironmentVariable("DATASYNC_SERVICE_ENDPOINT") is not null;
+    private readonly string serviceEndpoint = Environment.GetEnvironmentVariable("DATASYNC_SERVICE_ENDPOINT");
+
+    [SkippableFact]
+    public async Task Metadata_GetsSetByServer()
+    {
+        Skip.IfNot(this.liveTestsAreEnabled);
+
+        DateTimeOffset now = DateTimeOffset.UtcNow;
+        HttpClient client = new();
+        TodoItem source = new() { Title = "Test item" };
+        HttpResponseMessage response = await client.PostAsJsonAsync($"{this.serviceEndpoint}/tables/TodoItem", source);
+
+        response.Should().HaveHttpStatusCode(HttpStatusCode.Created);
+
+        TodoItem result = await response.Content.ReadFromJsonAsync<TodoItem>();
+        result.Id.Should().NotBeNullOrEmpty();
+        result.UpdatedAt.Should().NotBeNull().And.BeAfter(now);
+        result.Version.Should().NotBeNullOrEmpty();
+        result.Deleted.Should().BeFalse();
+        result.Title.Should().Be("Test item");
+        result.IsComplete.Should().BeFalse();
+
+        response.Headers.Location.Should().NotBeNull().And.BeEquivalentTo(new Uri($"{this.serviceEndpoint}/tables/TodoItem/{result.Id}"));
+        response.Headers.ETag.ToString().Should().Be($"\"{result.Version}\"");
+    }
+
+    // This must match the TodoItem class in the server project.
+    public class TodoItem
+    {
+        public string Id { get; set; }
+        public DateTimeOffset? UpdatedAt { get; set; }
+        public string Version { get; set; }
+        public bool Deleted { get; set; }
+        public string Title { get; set; }
+        public bool IsComplete { get; set; }
+    }
+}

tests/CommunityToolkit.Datasync.TestCommon/Databases/AzureSql/AzureSqlDbContext.cs

@@ -37,7 +37,7 @@ internal void InitializeDatabase(bool clearEntities)
                 UPDATE
                     [dbo].[{0}]
                 SET
-                    [UpdatedAt] = GETUTCDATE()
+                    [UpdatedAt] = SYSUTCDATETIME()
                 WHERE
                     [Id] IN (SELECT [Id] FROM INSERTED);
             END