Add IUserTimeZoneService to make it easier to mock UserTimeZoneService

src/OrchardCore.Modules/OrchardCore.Users/TimeZone/Drivers/UserTimeZoneDisplayDriver.cs

@@ -10,9 +10,9 @@ namespace OrchardCore.Users.TimeZone.Drivers;
 
 public sealed class UserTimeZoneDisplayDriver : SectionDisplayDriver<User, UserTimeZone>
 {
-    private readonly UserTimeZoneService _userTimeZoneService;
+    private readonly IUserTimeZoneService _userTimeZoneService;
 
-    public UserTimeZoneDisplayDriver(UserTimeZoneService userTimeZoneService)
+    public UserTimeZoneDisplayDriver(IUserTimeZoneService userTimeZoneService)
     {
         _userTimeZoneService = userTimeZoneService;
     }

src/OrchardCore.Modules/OrchardCore.Users/TimeZone/Services/IUserTimeZoneService.cs

@@ -0,0 +1,25 @@
+using OrchardCore.Modules;
+
+namespace OrchardCore.Users.TimeZone.Services;
+
+/// <summary>
+/// Contract for user time zone service.
+/// </summary>
+public interface IUserTimeZoneService
+{
+    /// <summary>
+    /// Gets the time zone of the currently logged-in user.
+    /// </summary>
+    public ValueTask<ITimeZone> GetUserTimeZoneAsync();
+
+    /// <summary>
+    /// Updates the time zone of the currently logged-in user.
+    /// </summary>
+    /// <param name="user">The <see cref="IUser"/>.</param>
+    public ValueTask UpdateUserTimeZoneAsync(IUser user);
+
+    /// <summary>
+    /// Gets the time zone identifier of the currently logged-in user.
+    /// </summary>
+    public ValueTask<string> GetCurrentUserTimeZoneIdAsync();
+}

src/OrchardCore.Modules/OrchardCore.Users/TimeZone/Services/UserTimeZoneSelector.cs

@@ -7,9 +7,9 @@ namespace OrchardCore.Users.TimeZone.Services;
 /// </summary>
 public class UserTimeZoneSelector : ITimeZoneSelector
 {
-    private readonly UserTimeZoneService _userTimeZoneService;
+    private readonly IUserTimeZoneService _userTimeZoneService;
 
-    public UserTimeZoneSelector(UserTimeZoneService userTimeZoneService)
+    public UserTimeZoneSelector(IUserTimeZoneService userTimeZoneService)
     {
         _userTimeZoneService = userTimeZoneService;
     }

src/OrchardCore.Modules/OrchardCore.Users/TimeZone/Services/UserTimeZoneService.cs

@@ -9,7 +9,7 @@
 
 namespace OrchardCore.Users.TimeZone.Services;
 
-public class UserTimeZoneService
+public class UserTimeZoneService : IUserTimeZoneService
 {
     private const string EmptyTimeZone = "empty";
     private const string CacheKey = "UserTimeZone/";

src/OrchardCore.Modules/OrchardCore.Users/TimeZone/Startup.cs

@@ -13,7 +13,7 @@ public sealed class Startup : StartupBase
     public override void ConfigureServices(IServiceCollection services)
     {
         services.AddScoped<ITimeZoneSelector, UserTimeZoneSelector>();
-        services.AddSingleton<UserTimeZoneService>();
+        services.AddSingleton<IUserTimeZoneService, UserTimeZoneService>();
         services.AddScoped<IDisplayDriver<User>, UserTimeZoneDisplayDriver>();
     }
 }