(refactor): code review

webapi/Core/DomainObjects/Documents/BlogItem.cs

@@ -17,7 +17,10 @@ namespace Core.DomainObjects.Documents {
           hash = hash * 23 + Images.Sum(x => x.GetHashCode());
         hash = hash * 23 + Author.GetHashCode();
         hash = hash * 23 + Created.GetHashCode();
+        if(Tags != null)
           hash = hash * 23 + Tags.Sum(x => x.GetHashCode());
+
+        if(Categories != null)
           hash = hash * 23 + Categories.Sum(x => x.GetHashCode());
 
         hash = hash * 23 + ReadTime.GetHashCode();

webapi/DataProviders/CategoryDataProvider.cs

@@ -65,6 +65,6 @@ namespace DataProviders {
       DeleteWithPredicate(x => x.Id == id, _collectionName);
 
     public IDomainResult DeleteAll(Guid siteId) =>
-      DeleteWithPredicate(x => x.SiteId == siteId, _collectionName);
+      DeleteManyWithPredicate(x => x.SiteId == siteId, _collectionName);
   }
 }

webapi/DataProviders/ShopCartDataProvider.cs

@@ -50,6 +50,6 @@ namespace DataProviders {
       DeleteWithPredicate(x => x.Id == id, _collectionName);
 
     public IDomainResult DeleteAll(Guid siteId, Guid userId) =>
-      DeleteWithPredicate(x => x.SiteId == siteId && x.UserId == userId, _collectionName);
+      DeleteManyWithPredicate(x => x.SiteId == siteId && x.UserId == userId, _collectionName);
   }
 }

webapi/Tests/Extensions/IEquatableExtensionsTests.cs

@@ -19,7 +19,14 @@ namespace ExtensionsTests {
       }
 
       public override int GetHashCode() {
-        return Test.GetHashCode();
+        unchecked {
+          int hash = 17;
+
+          if (Test != null)
+            hash = hash * 23 + Test.GetHashCode();
+          
+          return hash;
+        }
       }
     }
 

webapi/Tests/Extensions/ObjectExtensionsTests.cs

@@ -7,7 +7,7 @@ namespace ExtensionsTests {
   public class ObjectExtensions {
 
     private class DummyClass {
-      public string Test { get; set; }
+      public string? Test { get; set; }
     }
 
     [Fact]

webapi/Tests/Extensions/StringExtensionsTests.cs

@@ -17,12 +17,12 @@ using System.Threading.Tasks;
 namespace ExtensionsTests {
   public class StringExtensions : ServicesBase {
 
-    private readonly Configuration _configuration;
+    // private readonly Configuration _configuration;
 
-    public StringExtensions() {
+    // public StringExtensions() {
-      _configuration = ServiceProvider.GetService<IOptions<Configuration>>()?.Value
+    //   _configuration = ServiceProvider.GetService<IOptions<Configuration>>()?.Value
-        ?? throw new NullReferenceException("Configuration not found");
+    //     ?? throw new NullReferenceException("Configuration not found");
-    }
+    // }
 
 
     [Fact]
@@ -93,7 +93,7 @@ namespace ExtensionsTests {
     [Fact]
     public void ToNullableInt() {
       var value = "0".ToNullableInt();
-      Assert.True(value.GetType() == typeof(int) && value == 0 && "".ToNullableInt() == null);
+      Assert.True(value != null && value.GetType() == typeof(int?) && value == 0 && "".ToNullableInt() == null);
     }
 
     [Fact]
@@ -105,7 +105,7 @@ namespace ExtensionsTests {
     [Fact]
     public void ToNullableUint() {
       var value = "0".ToNullableUint();
-      Assert.True(value.GetType() == typeof(uint) && value == 0 && "".ToNullableUint() == null);
+      Assert.True(value != null && value.GetType() == typeof(uint) && value == 0 && "".ToNullableUint() == null);
     }
 
     [Fact]
@@ -117,7 +117,7 @@ namespace ExtensionsTests {
     [Fact]
     public void ToNullableDecimal() {
       var value = "0".ToNullableDecimal();
-      Assert.True(value.GetType() == typeof(decimal) && "".ToNullableDecimal() == null);
+      Assert.True(value != null && value.GetType() == typeof(decimal) && "".ToNullableDecimal() == null);
     }
 
     [Fact]
@@ -129,7 +129,7 @@ namespace ExtensionsTests {
     [Fact]
     public void ToNullableDouble() {
       var value = "0".ToNullableDouble();
-      Assert.True(value.GetType() == typeof(double) && value == 0 && "".ToNullableDouble() == null);
+      Assert.True(value != null && value.GetType() == typeof(double) && value == 0 && "".ToNullableDouble() == null);
     }
 
     [Fact]
@@ -163,7 +163,12 @@ namespace ExtensionsTests {
 
     [Fact]
     public void ToNullalbeBool() {
-      Assert.True("true".ToNullableBool().Value && !"false".ToNullableBool().Value && "".ToNullableBool() == null);
+      var trueTest = "true".ToNullableBool();
+      var falseTest = "false".ToNullableBool();
+      if (trueTest == null || falseTest == null)
+        Assert.False(true);
+      else
+        Assert.True(trueTest.Value && !falseTest.Value && "".ToNullableBool() == null);
     }
 
     [Fact]
@@ -195,12 +200,16 @@ namespace ExtensionsTests {
     public void Excerpt() => Assert.Equal("M...", "MAKS-IT".Excerpt(4));
 
     private class DummyClass {
-      public string Test { get; set; }
+      public string? Test { get; set; }
     }
 
     [Fact]
     public void ToObject() {
       var obj = "{ \"Test\": \"Test\" }".ToObject<DummyClass>();
+
+      if (obj == null)
+        Assert.False(true);
+      else
         Assert.Equal("Test", obj.Test);
     }
 

webapi/WeatherForecast/Models/Abstractions/PageModelBase.cs

@@ -23,11 +23,6 @@ namespace WeatherForecast.Models.Abstractions {
     /// </summary>
     public TitleSectionModel? TitleSection { get; set; }
 
-    /// <summary>
-    /// 
-    /// </summary>
-    public PageModelBase() { }
-
     /// <summary>
     /// 
     /// </summary>

webapi/WeatherForecast/Models/Abstractions/PersonModelBase.cs

@@ -18,7 +18,7 @@ namespace WeatherForecast.Models.Abstractions {
     /// <summary>
     /// 
     /// </summary>
-    public ImageModel? Image { get; set; }
+    public ImageResponseModel? Image { get; set; }
 
     /// <summary>
     /// 

webapi/WeatherForecast/Models/Abstractions/PostItemResponseModelBase.cs

@@ -2,6 +2,7 @@
 using Core.Abstractions.Models;
 using Core.DomainObjects;
 using Core.Enumerations;
+using WeatherForecast.Models.Responses;
 using WeatherForecast.Models.Responses.L10n;
 
 namespace WeatherForecast.Models.Abstractions {
@@ -73,7 +74,7 @@ namespace WeatherForecast.Models.Abstractions {
     /// <summary>
     /// 
     /// </summary>
-    public List<ImageModel>? Images { get; set; }
+    public List<ImageResponseModel>? Images { get; set; }
 
     /// <summary>
     /// 
@@ -93,7 +94,7 @@ namespace WeatherForecast.Models.Abstractions {
     /// <summary>
     /// 
     /// </summary>
-    public List<CategoryModel>? Categories { get; set; }
+    public List<CategoryItemResponseModel>? Categories { get; set; }
 
     /// <summary>
     /// 
@@ -121,8 +122,8 @@ namespace WeatherForecast.Models.Abstractions {
     /// <param name="categories"></param>
     public PostItemResponseModelBase(PostItemBase<T> postItem, List<Category> categories) : this(postItem) {
       L10n = postItem.L10n.Select(x => new PostItemL10nModel(x)).ToList();
-      Categories = categories.Select(x => new CategoryModel(x)).ToList();
+      Categories = categories.Select(x => new CategoryItemResponseModel(x)).ToList();
-      Images = postItem.Images?.Select(x => new ImageModel(x)).ToList();
+      Images = postItem.Images?.Select(x => new ImageResponseModel(x)).ToList();
     }
 
     /// <summary>
@@ -133,7 +134,8 @@ namespace WeatherForecast.Models.Abstractions {
     /// <param name="locale"></param>
     public PostItemResponseModelBase(PostItemBase<T> postItem, List<Category> categories, Locales locale) : this(postItem) {
 
-      var postItemL10n = postItem.L10n.SingleOrDefault(x => x.Locale == locale);
+      var postItemL10n = postItem.L10n.Single(x => x.Locale == locale);
+
       if (postItemL10n != null) {
         Slug = postItemL10n.Slug;
         Badges = postItemL10n.Badges;
@@ -144,8 +146,8 @@ namespace WeatherForecast.Models.Abstractions {
         Badges = postItemL10n.Badges;
       }
 
-      Categories = categories.Select(x => new CategoryModel(x, locale)).ToList();
+      Categories = categories.Select(x => new CategoryItemResponseModel(x, locale)).ToList();
-      Images = postItem.Images?.Select(x => new ImageModel(x, locale)).ToList();
+      Images = postItem.Images?.Select(x => new ImageResponseModel(x, locale)).ToList();
     }
   }
 }

webapi/WeatherForecast/Models/CategoryModel.cs

@@ -1,48 +0,0 @@
-using Core.DomainObjects;
-using Core.Enumerations;
-using WeatherForecast.Models.L10n;
-
-namespace WeatherForecast.Models {
-
-  /// <summary>
-  /// 
-  /// </summary>
-  public class CategoryModel {
-
-    /// <summary>
-    /// 
-    /// </summary>
-    public List<CategoryL10nModel>? L10n { get; set; }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    public string? Slug { get; set; }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    public string? Text { get; set; }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="category"></param>
-    public CategoryModel(Category category) {
-      L10n = category.L10n.Select(x => new CategoryL10nModel(x)).ToList();
-    }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="category"></param>
-    /// <param name="locale"></param>
-    public CategoryModel(Category category, Locales locale) {
-      var categoryL10n = category.L10n.SingleOrDefault(x => x.Locale == locale);
-      if (categoryL10n != null) {
-        Slug = categoryL10n.Slug;
-        Text = categoryL10n.Text;
-      }
-    }
-  }
-}

webapi/WeatherForecast/Models/CommentModel.cs

@@ -1,4 +1,6 @@
-namespace WeatherForecast.Models {
+using Core.DomainObjects;
+
+namespace WeatherForecast.Models {
 
   /// <summary>
   /// 
@@ -8,16 +10,18 @@
     /// <summary>
     /// 
     /// </summary>
-    public AuthorModel Author { get; set; }
+    public AuthorModel? Author { get; set; }
 
     /// <summary>
     /// 
     /// </summary>
-    public string Comment { get; set; }
+    public string? Comment { get; set; }
 
     /// <summary>
     /// 
     /// </summary>
     public List<CommentModel>? Responses { get; set; }
+
+
   }
 }

webapi/WeatherForecast/Models/PageSections/FeaturedBlogSectionModel.cs

@@ -13,11 +13,6 @@ namespace WeatherForecast.Models.PageSections {
     /// </summary>
     public string ReadTime { get; set; }
 
-    /// <summary>
-    /// 
-    /// </summary>
-    public FeaturedBlogSectionModel() : base() { }
-
     /// <summary>
     /// 
     /// </summary>

webapi/WeatherForecast/Models/PageSections/TitleSectionModel.cs

@@ -11,7 +11,7 @@ namespace WeatherForecast.Models.PageSections {
     /// <summary>
     /// 
     /// </summary>
-    public ImageModel? Image { get; set; }
+    public ImageResponseModel? Image { get; set; }
 
     /// <summary>
     /// 

webapi/WeatherForecast/Models/Requests/BlogItemRequestModel.cs

@@ -26,7 +26,8 @@ namespace WeatherForecast.Models.Requests {
     /// </summary>
     /// <returns></returns>
     public override BlogItem ToDomainObject() {
-      if (HasValidationErrors(this) || HasValidationErrorsBase(HasValidationErrors(this))) throw new ValidationException();
+      if (HasValidationErrors(this) || HasValidationErrorsBase(HasValidationErrors(this)))
+        throw new ValidationException();
 
       return new BlogItem() {
         L10n = L10n.Select(x => x.ToDomainObject()).ToList(),
@@ -50,14 +51,9 @@ namespace WeatherForecast.Models.Requests {
     /// <returns></returns>
     public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext) {
       if (L10n.IsNullOrEmpty())
-        yield return new ValidationResult($"{validationContext.DisplayName} ${Errors.NullOrEmpty}");
+        yield return new ValidationResult($"{nameof(L10n)} ${Errors.NullOrEmpty}");
-      else {
-        foreach (var item in L10n)
-          foreach (var validationResult in item.Validate(validationContext))
-            yield return validationResult;
-      }
     }
 
-    private bool HasValidationErrors(BlogItemRequestModel validationContext) => Validate(new ValidationContext(validationContext)).Any();
+    private bool HasValidationErrors(BlogItemRequestModel model) => Validate(new ValidationContext(model)).Any();
   }
 }

webapi/WeatherForecast/Models/Requests/CategoryItemRequestModel.cs

@@ -38,12 +38,7 @@ namespace WeatherForecast.Models.Requests {
     /// <returns></returns>
     public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext) {
       if (L10n.IsNullOrEmpty())
-        yield return new ValidationResult($"{validationContext.DisplayName} ${Errors.NullOrEmpty}");
+        yield return new ValidationResult($"{nameof(L10n)} ${Errors.NullOrEmpty}");
-      else {
-        foreach (var item in L10n)
-          foreach (var validationResult in item.Validate(validationContext))
-            yield return validationResult;
-      }
     }
 
     [MemberNotNullWhen(false, new[] { nameof(L10n) })]

webapi/WeatherForecast/Models/Requests/ImageRequestModel.cs

@@ -0,0 +1,56 @@
+using Core.Abstractions.Models;
+using Core.DomainObjects;
+using Core.Enumerations;
+using Extensions;
+using System.ComponentModel.DataAnnotations;
+using WeatherForecast.Models.Requests.L10n;
+
+namespace WeatherForecast.Models {
+
+  /// <summary>
+  /// 
+  /// </summary>
+  public class ImageRequestModel : RequestModelBase<Image> {
+
+    /// <summary>
+    /// 
+    /// </summary>
+    public List<ImageL10nModel>? L10n { get; set; } 
+
+    /// <summary>
+    /// 
+    /// </summary>
+    public string? Src { get; set; }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    public string? Alt { get; set; }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <returns></returns>
+    /// <exception cref="NotImplementedException"></exception>
+    public override Image ToDomainObject() {
+      throw new NotImplementedException();
+    }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="validationContext"></param>
+    /// <returns></returns>
+    /// <exception cref="NotImplementedException"></exception>
+    public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext) {
+      if (L10n.IsNullOrEmpty())
+        yield return new ValidationResult($"{nameof(L10n)} ${Errors.NullOrEmpty}");
+
+      if (string.IsNullOrWhiteSpace(Src))
+        yield return new ValidationResult($"{nameof(Src)} ${Errors.NullOrWhiteSpace}");
+
+      if (string.IsNullOrWhiteSpace(Alt))
+        yield return new ValidationResult($"{nameof(Alt)} ${Errors.NullOrWhiteSpace}");
+    }
+  }
+}

webapi/WeatherForecast/Models/Requests/L10n/CategoryL10nModel.cs

@@ -50,15 +50,15 @@ namespace WeatherForecast.Models.Requests.L10n {
     /// <exception cref="NotImplementedException"></exception>
     public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext) {
       if (string.IsNullOrWhiteSpace(Locale))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Locale)} {Errors.NullOrWhiteSpace.Name}");
       else if (Enumeration.FromDisplayName<Locales>(Locale) == null)
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.WrongOrNotManaged}");
+        yield return new ValidationResult($"{nameof(Locale)} {Errors.WrongOrNotManaged}");
 
       if (string.IsNullOrWhiteSpace(Slug))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Slug)} {Errors.NullOrWhiteSpace.Name}");
 
       if (string.IsNullOrWhiteSpace(Text))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Text)} {Errors.NullOrWhiteSpace.Name}");
     }
 
     // https://www.meziantou.net/csharp-8-nullable-reference-types.htm

webapi/WeatherForecast/Models/Requests/L10n/ImageL10nModel.cs

@@ -42,13 +42,12 @@ namespace WeatherForecast.Models.Requests.L10n {
     /// <returns></returns>
     public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext) {
       if (string.IsNullOrWhiteSpace(Locale))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Locale)} {Errors.NullOrWhiteSpace.Name}");
       else if (Enumeration.FromDisplayName<Locales>(Locale) == null)
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.WrongOrNotManaged}");
+        yield return new ValidationResult($"{nameof(Locale)} {Errors.WrongOrNotManaged}");
 
       if (string.IsNullOrWhiteSpace(Alt))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Alt)} {Errors.NullOrWhiteSpace.Name}");
-
     }
 
     [MemberNotNullWhen(false, new[] { nameof(Locale), nameof(Alt) })]

webapi/WeatherForecast/Models/Requests/L10n/PostItemL10nModel.cs

@@ -87,29 +87,29 @@ namespace WeatherForecast.Models.Requests.L10n {
     /// <returns></returns>
     public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext) {
       if (string.IsNullOrWhiteSpace(Locale))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Locale)} {Errors.NullOrWhiteSpace.Name}");
       else if (Enumeration.FromDisplayName<Locales>(Locale) == null)
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.WrongOrNotManaged}");
+        yield return new ValidationResult($"{nameof(Locale)} {Errors.WrongOrNotManaged}");
 
       if (string.IsNullOrWhiteSpace(Slug))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Slug)} {Errors.NullOrWhiteSpace.Name}");
 
       if (string.IsNullOrWhiteSpace(Description))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Description)} {Errors.NullOrWhiteSpace.Name}");
 
       if (string.IsNullOrWhiteSpace(Title))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Title)} {Errors.NullOrWhiteSpace.Name}");
 
       if (string.IsNullOrWhiteSpace(Text))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(Text)} {Errors.NullOrWhiteSpace.Name}");
 
       if (string.IsNullOrWhiteSpace(ShortText))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(ShortText)} {Errors.NullOrWhiteSpace.Name}");
 
       if (string.IsNullOrWhiteSpace(ContentType))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrWhiteSpace.Name}");
+        yield return new ValidationResult($"{nameof(ContentType)} {Errors.NullOrWhiteSpace.Name}");
       else if (Enumeration.FromDisplayName<ContentTypes>(ContentType) == null)
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.WrongOrNotManaged}");
+        yield return new ValidationResult($"{nameof(ContentType)} {Errors.WrongOrNotManaged}");
     }
 
     [MemberNotNullWhen(false, new[] { nameof(Locale), nameof(Slug), nameof(Description), nameof(Title), nameof(Text), nameof(ShortText), nameof(ContentType) })]

webapi/WeatherForecast/Models/Requests/ShopCartItemRequestModel.cs

@@ -36,8 +36,8 @@ namespace WeatherForecast.Models.Requests {
     /// <param name="validationContext"></param>
     /// <returns></returns>
     public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext) {
-      if (Quantity == null)
+      if (Quantity == null || (Quantity != null && Quantity == 0))
-        yield return new ValidationResult($"{validationContext.DisplayName} ${Errors.NullOrEmpty}");
+        yield return new ValidationResult($"{nameof(Quantity)} ${Errors.NullOrEmpty}");
     }
 
     [MemberNotNullWhen(false, new[] { nameof(Quantity) })]

webapi/WeatherForecast/Models/Requests/ShopItemRequestModel.cs

@@ -1,13 +1,11 @@
-using Core.Abstractions.Models;
+using System.ComponentModel.DataAnnotations;
-using Core.DomainObjects;
-using Core.DomainObjects.Documents;
-using Core.DomainObjects.L10n;
-using Core.Enumerations;
-using ExtensionMethods;
-using Extensions;
-using System.ComponentModel.DataAnnotations;
 using System.Diagnostics.CodeAnalysis;
+
 using WeatherForecast.Models.Abstractions;
+using Core.DomainObjects.Documents;
+using Core.Enumerations;
+using Extensions;
+
 
 namespace WeatherForecast.Models.Requests {
 
@@ -46,7 +44,8 @@ namespace WeatherForecast.Models.Requests {
     /// </summary>
     /// <returns></returns>
     public override ShopItem ToDomainObject() {
-      if (HasValidationErrors(this) || HasValidationErrorsBase(HasValidationErrors(this))) throw new ValidationException();
+      if (HasValidationErrors(this) || HasValidationErrorsBase(HasValidationErrors(this)))
+        throw new ValidationException();
     
       return new ShopItem() {
         L10n = L10n.Select(x => x.ToDomainObject()).ToList(),
@@ -72,24 +71,19 @@ namespace WeatherForecast.Models.Requests {
     /// <returns></returns>
     public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext) {
       if (L10n.IsNullOrEmpty())
-        yield return new ValidationResult($"{validationContext.DisplayName} ${Errors.NullOrEmpty}");
+        yield return new ValidationResult($"{nameof(L10n)} ${Errors.NullOrEmpty}");
-      else {
-        foreach (var item in L10n)
-          foreach (var validationResult in item.Validate(validationContext))
-            yield return validationResult;
-      }
 
       if (string.IsNullOrWhiteSpace(BrandName))
-        yield return new ValidationResult($"{validationContext.DisplayName} ${Errors.NullOrWhiteSpace}");
+        yield return new ValidationResult($"{nameof(BrandName)} ${Errors.NullOrWhiteSpace}");
 
-      if (Price == null)
+      if (Price == null || (Price != null && Price == 0))
-        yield return new ValidationResult($"{validationContext.DisplayName} {Errors.NullOrEmpty.Name}");
+        yield return new ValidationResult($"{nameof(Price)} {Errors.NullOrEmpty.Name}");
 
-      if (Quantity == null)
+      if (Quantity == null || (Quantity != null && Quantity == 0))
-        yield return new ValidationResult($"{validationContext.DisplayName} ${Errors.NullOrEmpty}");
+        yield return new ValidationResult($"{nameof(Quantity)} ${Errors.NullOrEmpty}");
     }
 
     [MemberNotNullWhen(false, new[] { nameof(BrandName), nameof(Price), nameof(Quantity) })]
-    private bool HasValidationErrors(ShopItemRequestModel validationContext) => Validate(new ValidationContext(validationContext)).Any();
+    private bool HasValidationErrors(ShopItemRequestModel model) => Validate(new ValidationContext(model)).Any();
   }
 }

webapi/WeatherForecast/Models/Responses/BlogCategoriesResponseModel.cs

@@ -1,15 +0,0 @@
-using Core.Abstractions.Models;
-
-namespace WeatherForecast.Models.Responses {
-
-  /// <summary>
-  /// 
-  /// </summary>
-  public class BlogCategoriesResponseModel : ResponseModelBase {
-
-    /// <summary>
-    /// 
-    /// </summary>
-    public List<CategoryModel>? Items { get; set; }
-  }
-}

webapi/WeatherForecast/Models/Responses/BlogFeaturedResponseModel.cs

@@ -1,23 +0,0 @@
-using Core.Abstractions.Models;
-
-namespace WeatherForecast.Models.Responses {
-
-  /// <summary>
-  /// 
-  /// </summary>
-  public class BlogFeaturedResponseModel : ResponseModelBase {
-
-    /// <summary>
-    /// 
-    /// </summary>
-    public List<BlogItemModel> Items { get; private set; }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="items"></param>
-    public BlogFeaturedResponseModel(List<BlogItemModel> items) {
-      Items = items;
-    }
-  }
-}

webapi/WeatherForecast/Models/Responses/BlogItemsResponseModel.cs

@@ -8,12 +8,6 @@ namespace WeatherForecast.Models.Responses {
   /// </summary>
   public class BlogItemsResponseModel : PaginationModelBase<BlogItemResponseModel> {
 
-
-    //public BlogItemModel FeaturedBlog { get; set; }
-
-    //public List<CategoryModel> Categories { get; set; }
-
-
     /// <summary>
     /// 
     /// </summary>
@@ -22,6 +16,5 @@ namespace WeatherForecast.Models.Responses {
     /// <param name="items"></param>
     public BlogItemsResponseModel(int currentPage, int totalPages, List<BlogItemResponseModel> items)
       : base(currentPage, totalPages, items) { }
-
   }
 }

webapi/WeatherForecast/Models/Responses/CategoryItemResponseModel.cs

@@ -1,7 +1,7 @@
 using Core.Abstractions.Models;
 using Core.DomainObjects;
 using Core.Enumerations;
-using WeatherForecast.Models.L10n;
+using WeatherForecast.Models.Responses.L10n;
 
 namespace WeatherForecast.Models.Responses {
 

webapi/WeatherForecast/Models/Responses/ImageResponseModel.cs

@@ -1,13 +1,13 @@
 using Core.DomainObjects;
 using Core.Enumerations;
-using WeatherForecast.Models.L10n;
+using WeatherForecast.Models.Responses.L10n;
 
 namespace WeatherForecast.Models {
 
   /// <summary>
   /// 
   /// </summary>
-  public class ImageModel {
+  public class ImageResponseModel {
 
     /// <summary>
     /// 
@@ -28,7 +28,7 @@ namespace WeatherForecast.Models {
     /// 
     /// </summary>
     /// <param name="image"></param>
-    public ImageModel(Image image) {
+    public ImageResponseModel(Image image) {
       L10n = image.L10n.Select(x => new ImageL10nModel(x)).ToList();
     }
 
@@ -37,10 +37,11 @@ namespace WeatherForecast.Models {
     /// </summary>
     /// <param name="image"></param>
     /// <param name="locale"></param>
-    public ImageModel(Image image, Locales locale) {
+    public ImageResponseModel(Image image, Locales locale) {
       Src = image.Src;
 
-      var l10n = image.L10n.SingleOrDefault(x => x.Locale == locale);
+      var l10n = image.L10n.Single(x => x.Locale == locale);
+
       if (l10n != null) {
         Alt = l10n.Alt;
       }

webapi/WeatherForecast/Models/Responses/ShopCartItemResponseModel.cs

@@ -22,7 +22,7 @@ namespace WeatherForecast.Models.Responses {
     /// <summary>
     /// 
     /// </summary>
-    public ImageModel Image { get; set; }
+    public ImageResponseModel? Image { get; set; }
 
     /// <summary>
     /// 
@@ -59,11 +59,6 @@ namespace WeatherForecast.Models.Responses {
     /// </summary>
     public uint? Quantity { get; set; }
 
-    /// <summary>
-    /// 
-    /// </summary>
-    public ShopCartItemResponseModel() { }
-
     /// <summary>
     /// 
     /// </summary>
@@ -79,13 +74,16 @@ namespace WeatherForecast.Models.Responses {
       NewPrice = shopItem.NewPrice;
       Quantity = shopCartItem.Quantity;
 
+      var l10n = shopItem.L10n.SingleOrDefault(x => x.Locale == locale);
 
-      var shopItemL10n = shopItem.L10n.Single(x => x.Locale == locale);
+      if (l10n != null) {
-      Slug = shopItemL10n.Slug;
+        Slug = l10n.Slug;
-      Title = shopItemL10n.Title;
+        Title = l10n.Title;
-      ShortText = shopItemL10n.ShortText;
+        ShortText = l10n.ShortText;
+      }
 
-      Image = new ImageModel(shopItem.Images.First(), locale);
+      if(shopItem.Images != null)
+        Image = new ImageResponseModel(shopItem.Images.First(), locale);
 
     }
   }

webapi/WeatherForecast/Services/BlogItemService.cs

@@ -1,7 +1,12 @@
-using Core.DomainObjects;
+using DomainResults.Common;
-using Core.Enumerations;
+
+using ExtensionMethods;
 using DataProviders;
-using DomainResults.Common;
+
+using Core.DomainObjects;
+using Core.DomainObjects.L10n;
+using Core.Enumerations;
+
 using WeatherForecast.Models.Requests;
 using WeatherForecast.Models.Responses;
 
@@ -85,7 +90,44 @@ namespace WeatherForecast.Services {
     /// <returns></returns>
     /// <exception cref="NotImplementedException"></exception>
     public (Guid?, IDomainResult) Post(Guid siteId, BlogItemRequestModel requestModel) {
-      throw new NotImplementedException();
+      try {
+        var item = requestModel.ToDomainObject();
+        item.SiteId = siteId;
+
+        var (_, getResult) = _blogCatalogDataProvider.GetBySlugs(item.SiteId, item.L10n.Select(x => x.Slug).ToList());
+        if (getResult.IsSuccess)
+          return IDomainResult.Failed<Guid?>();
+
+        // TODO: should be recovered from users by jwt
+        item.Author = "fdc5aa50-ee68-4bae-a8e6-b8ae2c258f60".ToGuid();
+
+        // TODO: should be placed to object storage
+        item.Images = new List<Image>() {
+          new Image {
+            Src = "https://dummyimage.com/450x300/dee2e6/6c757d.jpg",
+            L10n = new List<ImageL10n> {
+              new ImageL10n {
+              Locale = Locales.Us,
+              Alt = "..."
+              }
+            }
+          }
+        };
+
+        // TODO: default value shoud not be hardcoded by database id
+        item.Categories ??= new List<Guid> { "e154e33f-3cc7-468d-bb66-e0390ddb9ae0".ToGuid() };
+
+
+        var (id, insertResult) = _blogCatalogDataProvider.Insert(item);
+
+        if (!insertResult.IsSuccess)
+          return IDomainResult.Failed<Guid?>();
+
+        return IDomainResult.Success(id);
+      }
+      catch (Exception ex) {
+        return IDomainResult.Failed<Guid?>(ex.Message);
+      }
     }
 
     /// <summary>
@@ -95,12 +137,15 @@ namespace WeatherForecast.Services {
     /// <param name="blogId"></param>
     /// <returns></returns>
     public (BlogItemResponseModel?, IDomainResult) Get(Guid siteId, Guid blogId) {
+      try {
         var (item, result) = _blogCatalogDataProvider.Get(siteId, blogId);
 
         if (!result.IsSuccess || item == null)
           return (null, result);
 
         var categories = new List<Category>();
+
+        if (item.Categories != null) {
           foreach (var catId in item.Categories) {
             var (category, getCategoryResult) = _categoryDataProvider.Get(siteId, catId);
             if (!getCategoryResult.IsSuccess || category == null)
@@ -108,9 +153,14 @@ namespace WeatherForecast.Services {
 
             categories.Add(category);
           }
+        }
 
         return IDomainResult.Success(new BlogItemResponseModel(item, categories));
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<BlogItemResponseModel?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -119,6 +169,7 @@ namespace WeatherForecast.Services {
     /// <param name="slug"></param>
     /// <returns></returns>
     public (BlogItemResponseModel?, IDomainResult) GetSlug(Guid siteId, string slug) {
+      try {
         var (item, result) = _blogCatalogDataProvider.GetBySlug(siteId, slug);
 
         if (!result.IsSuccess || item == null)
@@ -127,6 +178,8 @@ namespace WeatherForecast.Services {
         var locale = item.L10n.SingleOrDefault(x => x.Slug == slug)?.Locale ?? Locales.Us;
 
         var categories = new List<Category>();
+
+        if (item.Categories != null) {
           foreach (var catId in item.Categories) {
             var (category, getCategoryResult) = _categoryDataProvider.Get(siteId, catId);
             if (!getCategoryResult.IsSuccess || category == null)
@@ -134,9 +187,14 @@ namespace WeatherForecast.Services {
 
             categories.Add(category);
           }
+        }
 
         return IDomainResult.Success(new BlogItemResponseModel(item, categories, locale));
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<BlogItemResponseModel>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -147,7 +205,30 @@ namespace WeatherForecast.Services {
     /// <returns></returns>
     /// <exception cref="NotImplementedException"></exception>
     public (Guid?, IDomainResult) Update(Guid siteId, Guid blogId, BlogItemRequestModel requestData) {
-      throw new NotImplementedException();
+      try {
+        var (item, getResult) = _blogCatalogDataProvider.Get(siteId, blogId);
+        if (!getResult.IsSuccess || item == null)
+          return (null, getResult);
+
+        // construct domain object from model
+        var newItem = requestData.ToDomainObject();
+        newItem.Id = item.Id;
+        newItem.SiteId = siteId;
+
+        newItem.Created = item.Created;
+        newItem.Author = item.Author;
+
+        if (!item.Equals(newItem)) {
+          var (id, updateResult) = _blogCatalogDataProvider.Update(newItem);
+          if (!updateResult.IsSuccess || id == null)
+            return (null, updateResult);
+        }
+
+        return IDomainResult.Success(item.Id);
+      }
+      catch (Exception ex) {
+        return IDomainResult.Failed<Guid?>(ex.Message);
+      }
     }
 
     /// <summary>
@@ -158,7 +239,20 @@ namespace WeatherForecast.Services {
     /// <returns></returns>
     /// <exception cref="NotImplementedException"></exception>
     public IDomainResult Delete(Guid siteId, Guid blogId) {
-      throw new NotImplementedException();
+      try {
+        var (item, getResult) = _blogCatalogDataProvider.Get(siteId, blogId);
+        if (!getResult.IsSuccess || item == null)
+          return getResult;
+
+        var result = _blogCatalogDataProvider.Delete(item.Id);
+        if (!result.IsSuccess)
+          return result;
+
+        return IDomainResult.Success();
+      }
+      catch (Exception ex) {
+        return IDomainResult.Failed(ex.Message);
+      }
     }
   }
 }

webapi/WeatherForecast/Services/BlogItemsService.cs

@@ -1,8 +1,11 @@
-using Core.Abstractions;
+using DomainResults.Common;
+
+using DataProviders;
+
+using Core.Abstractions;
 using Core.DomainObjects;
 using Core.Enumerations;
-using DataProviders;
+
-using DomainResults.Common;
 using WeatherForecast.Models.Responses;
 
 namespace WeatherForecast.Services {
@@ -68,6 +71,7 @@ namespace WeatherForecast.Services {
     /// <param name="searchText"></param>
     /// <returns></returns>
     public (BlogItemsResponseModel?, IDomainResult) Get(Guid siteId, Guid? category, int currentPage, int itemsPerPage, string? locale, string? searchText) {
+      try {
         var (items, result) = _blogCatalogDataProvider.GetAll(siteId, currentPage > 0 ? ((currentPage - 1) * itemsPerPage) : 0, itemsPerPage);
         if (!result.IsSuccess || items == null)
           return (null, result);
@@ -75,6 +79,8 @@ namespace WeatherForecast.Services {
         var blogItems = new List<BlogItemResponseModel>();
         foreach (var item in items) {
           var categories = new List<Category>();
+
+          if (item.Categories != null) {
             foreach (var catId in item.Categories) {
               var (cat, getCategoryResult) = _categoryDataProvider.Get(siteId, catId);
               if (!getCategoryResult.IsSuccess || cat == null)
@@ -82,6 +88,7 @@ namespace WeatherForecast.Services {
 
               categories.Add(cat);
             }
+          }
 
           if (locale != null)
             blogItems.Add(new BlogItemResponseModel(item, categories, Enumeration.FromDisplayName<Locales>(locale) ?? Locales.Us));
@@ -93,12 +100,23 @@ namespace WeatherForecast.Services {
           ? IDomainResult.Success(new BlogItemsResponseModel(currentPage, 0, blogItems))
           : IDomainResult.NotFound<BlogItemsResponseModel?>();
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<BlogItemsResponseModel?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
     /// </summary>
     /// <param name="siteId"></param>
     /// <returns></returns>
-    public IDomainResult Delete(Guid siteId) => _blogCatalogDataProvider.DeleteAll(siteId);
+    public IDomainResult Delete(Guid siteId) {
+      try {
+        return _blogCatalogDataProvider.DeleteAll(siteId);
+      }
+      catch (Exception ex) {
+        return IDomainResult.Failed(ex.Message);
+      }
+    }
   }
 }

webapi/WeatherForecast/Services/CategoryItemService.cs

@@ -1,6 +1,9 @@
-using Core.Enumerations;
+using DomainResults.Common;
+
 using DataProviders;
-using DomainResults.Common;
+
+using Core.Enumerations;
+
 using WeatherForecast.Models.Requests;
 using WeatherForecast.Models.Responses;
 
@@ -81,13 +84,13 @@ namespace WeatherForecast.Services {
     /// <param name="requestModel"></param>
     /// <returns></returns>
     public (Guid?, IDomainResult) Post(Guid siteId, CategoryItemRequestModel requestModel) {
-      var (_, getResult) = _categoryDataProvider.GetBySlugs(siteId, requestModel.L10n.Select(x => x.Slug).ToList());
+      try {
-      if (getResult.IsSuccess)
-        return IDomainResult.Failed<Guid?>();
-
         var item = requestModel.ToDomainObject();
         item.SiteId = siteId;
 
+        var (_, getResult) = _categoryDataProvider.GetBySlugs(item.SiteId, item.L10n.Select(x => x.Slug).ToList());
+        if (getResult.IsSuccess)
+          return IDomainResult.Failed<Guid?>();
 
         var (id, insertResult) = _categoryDataProvider.Insert(item);
 
@@ -96,6 +99,10 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(id);
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<Guid?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -104,12 +111,17 @@ namespace WeatherForecast.Services {
     /// <param name="categoryId"></param>
     /// <returns></returns>
     public (CategoryItemResponseModel?, IDomainResult) Get(Guid siteId, Guid categoryId) {
+      try {
         var (item, result) = _categoryDataProvider.Get(siteId, categoryId);
         if (!result.IsSuccess || item == null)
           return (null, result);
 
         return IDomainResult.Success(new CategoryItemResponseModel(item));
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<CategoryItemResponseModel?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -118,6 +130,7 @@ namespace WeatherForecast.Services {
     /// <param name="slug"></param>
     /// <returns></returns>
     public (CategoryItemResponseModel?, IDomainResult) GetSlug(Guid siteId, string slug) {
+      try {
         var (item, result) = _categoryDataProvider.GetBySlug(siteId, slug);
         if (!result.IsSuccess || item == null)
           return (null, result);
@@ -126,6 +139,10 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(new CategoryItemResponseModel(item, locale));
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<CategoryItemResponseModel?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -135,6 +152,7 @@ namespace WeatherForecast.Services {
     /// <param name="requestData"></param>
     /// <returns></returns>
     public (Guid?, IDomainResult) Update(Guid siteId, Guid categoryId, CategoryItemRequestModel requestData) {
+      try {
         var (item, result) = _categoryDataProvider.Get(siteId, categoryId);
         if (!result.IsSuccess || item == null)
           return (null, result);
@@ -152,6 +170,10 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(item.Id);     
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<Guid?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -160,6 +182,7 @@ namespace WeatherForecast.Services {
     /// <param name="categoryId"></param>
     /// <returns></returns>
     public IDomainResult Delete(Guid siteId, Guid categoryId) {
+      try {
         var (item, getResult) = _categoryDataProvider.Get(siteId, categoryId);
         if (!getResult.IsSuccess || item == null)
           return getResult;
@@ -170,5 +193,9 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success();
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed(ex.Message);
+      }
+    }
   }
 }

webapi/WeatherForecast/Services/CategoryItemsService.cs

@@ -1,7 +1,10 @@
-using Core.Abstractions;
+using DomainResults.Common;
-using Core.Enumerations;
+
 using DataProviders;
-using DomainResults.Common;
+
+using Core.Abstractions;
+using Core.Enumerations;
+
 using WeatherForecast.Models.Responses;
 
 namespace WeatherForecast.Services {
@@ -55,6 +58,7 @@ namespace WeatherForecast.Services {
     /// <param name="locale"></param>
     /// <returns></returns>
     public (List<CategoryItemResponseModel>?, IDomainResult) Get(Guid siteId, string? locale) {
+      try {
         var (items, result) = _categoryDataProvider.GetAll(siteId);
         if (!result.IsSuccess || items == null)
           return (null, result);
@@ -65,12 +69,23 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(items.Select(x => new CategoryItemResponseModel(x)).ToList());
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<List<CategoryItemResponseModel>?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
     /// </summary>
     /// <param name="siteId"></param>
     /// <returns></returns>
-    public IDomainResult Delete(Guid siteId) => _categoryDataProvider.DeleteAll(siteId);
+    public IDomainResult Delete(Guid siteId) {
+      try {
+        return _categoryDataProvider.DeleteAll(siteId);
+      }
+      catch (Exception ex) {
+        return IDomainResult.Failed(ex.Message);
+      }
+    }
   }
 }

webapi/WeatherForecast/Services/ContentService.cs

@@ -1,5 +1,6 @@
-using DataProviders;
+using DomainResults.Common;
-using DomainResults.Common;
+
+using DataProviders;
 
 using WeatherForecast.Models.Responses;
 
@@ -47,6 +48,7 @@ namespace WeatherForecast.Services {
     /// <param name="locale"></param>
     /// <returns></returns>
     public (ContentResponseModel?, IDomainResult) GetContent(Guid siteId, string locale) {
+      try {
         var (content, result) = _contentDataProvider.Get(siteId, locale);
 
         if (!result.IsSuccess || content == null)
@@ -54,5 +56,9 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(new ContentResponseModel(content));
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<ContentResponseModel?>(ex.Message);
+      }
+    }
   }
 }

webapi/WeatherForecast/Services/ShopCartItemService.cs

@@ -1,8 +1,9 @@
-using Core.Abstractions;
+using DomainResults.Common;
-using Core.DomainObjects.Documents;
+
-using Core.Enumerations;
 using DataProviders;
-using DomainResults.Common;
+
+using Core.Abstractions;
+using Core.Enumerations;
 
 using WeatherForecast.Models.Requests;
 using WeatherForecast.Models.Responses;
@@ -32,7 +33,7 @@ namespace WeatherForecast.Services {
     /// <param name="sku"></param>
     /// <param name="locale"></param>
     /// <returns></returns>
-    (ShopCartItemResponseModel?, IDomainResult) Get(Guid siteId, Guid userId, string sku, string locale = "en-US");
+    (ShopCartItemResponseModel?, IDomainResult) Get(Guid siteId, Guid userId, string sku, string? locale);
     
     /// <summary>
     /// 
@@ -88,6 +89,7 @@ namespace WeatherForecast.Services {
     /// <param name="requestModel"></param>
     /// <returns></returns>
     public (Guid?, IDomainResult) Post(Guid siteId, Guid userId, string sku, ShopCartItemRequestModel requestModel) {
+      try {
         var (_, getResult) = _shopCartDataProvider.Get(siteId, userId, sku);
         if (getResult.IsSuccess)
           return IDomainResult.Failed<Guid?>();
@@ -105,6 +107,10 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(id);
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<Guid?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -114,17 +120,26 @@ namespace WeatherForecast.Services {
     /// <param name="sku"></param>
     /// <param name="locale"></param>
     /// <returns></returns>
-    public (ShopCartItemResponseModel?, IDomainResult) Get(Guid siteId, Guid userId, string sku, string locale = "en-US") {
+    public (ShopCartItemResponseModel?, IDomainResult) Get(Guid siteId, Guid userId, string sku, string? locale) {
-
+      try {
         var (cartItem, getCartItemResult) = _shopCartDataProvider.Get(siteId, userId, sku);
         if (!getCartItemResult.IsSuccess || cartItem == null)
           return (null, getCartItemResult);
 
         var (item, result) = _shopCatalogDataProvider.Get(siteId, cartItem.Sku);
-      if (!result.IsSuccess || item == null)
+        if (!result.IsSuccess || item == null) {
-        return (null, result);
+          var delteResult = _shopCartDataProvider.Delete(cartItem.Id);
+          if (!delteResult.IsSuccess)
+            return (null, delteResult);
 
-      return IDomainResult.Success(new ShopCartItemResponseModel(item, cartItem, Enumeration.FromDisplayName<Locales>(locale)));
+          return IDomainResult.NotFound<ShopCartItemResponseModel?>();
+        }
+        else
+          return IDomainResult.Success(new ShopCartItemResponseModel(item, cartItem, Enumeration.FromDisplayName<Locales>(locale ?? "en-US")));
+      }
+      catch (Exception ex) {
+        return IDomainResult.Failed<ShopCartItemResponseModel?>(ex.Message);
+      }
     }
 
     /// <summary>
@@ -136,6 +151,7 @@ namespace WeatherForecast.Services {
     /// <param name="requestData"></param>
     /// <returns></returns>
     public (Guid?, IDomainResult) Update(Guid siteId, Guid userId, string sku, ShopCartItemRequestModel requestData) {
+      try {
         var (item, getResult) = _shopCartDataProvider.Get(siteId, userId, sku);
         if (!getResult.IsSuccess || item == null)
           return (null, getResult);
@@ -156,6 +172,10 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(item.Id);
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<Guid?>(ex.Message); 
+      }
+    }
 
     /// <summary>
     /// 
@@ -165,6 +185,7 @@ namespace WeatherForecast.Services {
     /// <param name="sku"></param>
     /// <returns></returns>
     public IDomainResult Delete(Guid siteId, Guid userId, string sku) {
+      try {
         var (item, getResult) = _shopCartDataProvider.Get(siteId, userId, sku);
         if (!getResult.IsSuccess || item == null)
           return getResult;
@@ -175,5 +196,9 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success();
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed(ex.Message);
+      }
+    }
   }
 }

webapi/WeatherForecast/Services/ShopCartItemsService.cs

@@ -1,12 +1,12 @@
 using DomainResults.Common;
 
-using WeatherForecast.Models.Responses;
-
 using DataProviders;
 
 using Core.Enumerations;
 using Core.Abstractions;
 
+using WeatherForecast.Models.Responses;
+
 namespace WeatherForecast.Services {
 
   /// <summary>
@@ -21,7 +21,7 @@ namespace WeatherForecast.Services {
     /// <param name="userId"></param>
     /// <param name="locale"></param>
     /// <returns></returns>
-    (List<ShopCartItemResponseModel>?, IDomainResult) Get(Guid siteId, Guid userId, string locale = "en-US");
+    (List<ShopCartItemResponseModel>?, IDomainResult) Get(Guid siteId, Guid userId, string? locale);
     
     /// <summary>
     /// 
@@ -64,8 +64,8 @@ namespace WeatherForecast.Services {
     /// <param name="userId"></param>
     /// <param name="locale"></param>
     /// <returns></returns>
-    public (List<ShopCartItemResponseModel>?, IDomainResult) Get(Guid siteId, Guid userId, string locale = "en-US") {
+    public (List<ShopCartItemResponseModel>?, IDomainResult) Get(Guid siteId, Guid userId, string? locale) {
-
+      try {
         var (cartItems, getCartItemsResult) = _shopCartDataProvider.GetAll(siteId, userId);
         if (!getCartItemsResult.IsSuccess || cartItems == null)
           return (null, getCartItemsResult);
@@ -73,16 +73,23 @@ namespace WeatherForecast.Services {
         var items = new List<ShopCartItemResponseModel>();
         foreach (var cartItem in cartItems) {
           var (item, result) = _shopCatalogDataProvider.Get(siteId, cartItem.Sku);
-        if (!result.IsSuccess || item == null)
+          if (!result.IsSuccess || item == null) {
-          return (null, result);
+            var delteResult = _shopCartDataProvider.Delete(cartItem.Id);
-
+            if (!delteResult.IsSuccess)
-        items.Add(new ShopCartItemResponseModel(item, cartItem, Enumeration.FromDisplayName<Locales>(locale)));
+              return (null, delteResult);
+          }
+          else
+            items.Add(new ShopCartItemResponseModel(item, cartItem, Enumeration.FromDisplayName<Locales>(locale ?? "en-US")));
         }
 
         return items.Count > 0
           ? IDomainResult.Success(items)
           : IDomainResult.NotFound<List<ShopCartItemResponseModel>?>();
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<List<ShopCartItemResponseModel>?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -90,6 +97,13 @@ namespace WeatherForecast.Services {
     /// <param name="siteId"></param>
     /// <param name="userId"></param>
     /// <returns></returns>
-    public IDomainResult Delete(Guid siteId, Guid userId) => _shopCartDataProvider.DeleteAll(siteId, userId);
+    public IDomainResult Delete(Guid siteId, Guid userId) {
+      try {
+        return _shopCartDataProvider.DeleteAll(siteId, userId);
+      }
+      catch (Exception ex) {
+        return IDomainResult.Failed(ex.Message);
+      }
+    }
   }
 }

webapi/WeatherForecast/Services/ShopItemService.cs

@@ -1,9 +1,13 @@
-using Core.DomainObjects;
+using DomainResults.Common;
+
+using DataProviders;
+
+using ExtensionMethods;
+
+using Core.DomainObjects;
 using Core.DomainObjects.L10n;
 using Core.Enumerations;
-using DataProviders;
+
-using DomainResults.Common;
-using ExtensionMethods;
 using WeatherForecast.Models;
 using WeatherForecast.Models.Requests;
 
@@ -90,15 +94,16 @@ namespace WeatherForecast.Services {
     /// <param name="requestModel"></param>
     /// <returns></returns>
     public (Guid?, IDomainResult) Post(Guid siteId, string sku, ShopItemRequestModel requestModel) {
-      var (_, getResult) = _shopCatalogDataProvider.Get(siteId, sku);
+      try {
-      if (getResult.IsSuccess)
-        return IDomainResult.Failed<Guid?>();
-
         var item = requestModel.ToDomainObject();
 
         item.SiteId = siteId;
         item.Sku = sku;
 
+        var (_, getResult) = _shopCatalogDataProvider.Get(siteId, sku);
+        if (getResult.IsSuccess)
+          return IDomainResult.Failed<Guid?>();
+
         // TODO: should be recovered from users by jwt
         item.Author = "fdc5aa50-ee68-4bae-a8e6-b8ae2c258f60".ToGuid();
 
@@ -125,6 +130,12 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(id);
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<Guid?>(ex.Message);
+      }
+
+      
+    }
 
     /// <summary>
     /// 
@@ -133,6 +144,7 @@ namespace WeatherForecast.Services {
     /// <param name="sku"></param>
     /// <returns></returns>
     public (ShopItemResponseModel?, IDomainResult) Get(Guid siteId, string sku) {
+      try {
         var (item, result) = _shopCatalogDataProvider.Get(siteId, sku);
 
         if (!result.IsSuccess || item == null)
@@ -151,6 +163,10 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(new ShopItemResponseModel(item, categories));
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<ShopItemResponseModel?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -159,6 +175,7 @@ namespace WeatherForecast.Services {
     /// <param name="slug"></param>
     /// <returns></returns>
     public (ShopItemResponseModel?, IDomainResult) GetSlug(Guid siteId, string slug) {
+      try {
         var (item, result) = _shopCatalogDataProvider.GetBySlug(siteId, slug);
 
         if (!result.IsSuccess || item == null)
@@ -179,6 +196,10 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(new ShopItemResponseModel(item, categories, locale));
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<ShopItemResponseModel?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -188,6 +209,7 @@ namespace WeatherForecast.Services {
     /// <param name="requestData"></param>
     /// <returns></returns>
     public (Guid?, IDomainResult) Update(Guid siteId, string sku, ShopItemRequestModel requestData) {
+      try {
         var (item, getResult) = _shopCatalogDataProvider.Get(siteId, sku);
         if (!getResult.IsSuccess || item == null)
           return (null, getResult);
@@ -208,6 +230,10 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success(item.Id);
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<Guid?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
@@ -216,6 +242,7 @@ namespace WeatherForecast.Services {
     /// <param name="sku"></param>
     /// <returns></returns>
     public IDomainResult Delete(Guid siteId, string sku) {
+      try {
         var (item, getResult) = _shopCatalogDataProvider.Get(siteId, sku);
         if (!getResult.IsSuccess || item == null)
           return getResult;
@@ -226,6 +253,9 @@ namespace WeatherForecast.Services {
 
         return IDomainResult.Success();
       }
-
+      catch (Exception ex) {
+        return IDomainResult.Failed(ex.Message);
+      }
+    }
   }
 }

webapi/WeatherForecast/Services/ShopItemsService.cs

@@ -1,8 +1,11 @@
-using Core.Abstractions;
+using DomainResults.Common;
+
+using DataProviders;
+
+using Core.Abstractions;
 using Core.DomainObjects;
 using Core.Enumerations;
-using DataProviders;
+
-using DomainResults.Common;
 using WeatherForecast.Models;
 using WeatherForecast.Models.Responses;
 
@@ -68,6 +71,7 @@ namespace WeatherForecast.Services {
     /// <param name="searchText"></param>
     /// <returns></returns>
     public (ShopItemsResponseModel?, IDomainResult) Get(Guid siteId, Guid? category, int currentPage, int itemsPerPage, string? locale, string? searchText) {
+      try {
         var (items, result) = _shopCatalogDataProvider.GetAll(siteId, currentPage > 0 ? ((currentPage - 1) * itemsPerPage) : 0, itemsPerPage);
 
         if (!result.IsSuccess || items == null)
@@ -98,12 +102,23 @@ namespace WeatherForecast.Services {
           ? IDomainResult.Success(new ShopItemsResponseModel(currentPage, 0, shopItems))
           : IDomainResult.NotFound<ShopItemsResponseModel?>();
       }
+      catch (Exception ex) {
+        return IDomainResult.Failed<ShopItemsResponseModel?>(ex.Message);
+      }
+    }
 
     /// <summary>
     /// 
     /// </summary>
     /// <param name="siteId"></param>
     /// <returns></returns>
-    public IDomainResult Delete(Guid siteId)  => _shopCatalogDataProvider.DeleteAll(siteId);
+    public IDomainResult Delete(Guid siteId) {
+      try {
+        return _shopCatalogDataProvider.DeleteAll(siteId);
+      }
+      catch (Exception ex) {
+        return IDomainResult.Failed(ex.Message);
+      }
+    }
   }
 }