Add FluentValidation to application services

src/TaxBaik.Application/Services/BlogService.cs

@@ -1,13 +1,14 @@
 namespace TaxBaik.Application.Services;
 
 using System.Text.RegularExpressions;
+using FluentValidation;
 using TaxBaik.Application.DTOs;
 using TaxBaik.Domain.Entities;
 using TaxBaik.Domain.Interfaces;
 
 using Microsoft.Extensions.Caching.Memory;
 
-public class BlogService(IBlogPostRepository repository, IMemoryCache memoryCache)
+public class BlogService(IBlogPostRepository repository, IMemoryCache memoryCache, IValidator<CreateBlogPostDto> validator)
 {
     public async Task<BlogPost?> GetByIdAsync(int id, CancellationToken ct = default) =>
         await repository.GetByIdAsync(id, ct);
@@ -60,6 +61,7 @@ public class BlogService(IBlogPostRepository repository, IMemoryCache memoryCach
 
     public async Task<BlogPost> CreateAsync(CreateBlogPostDto dto, CancellationToken ct = default)
     {
+        validator.ValidateAndThrow(dto);
         var post = new BlogPost
         {
             Title = dto.Title,
@@ -87,6 +89,7 @@ public class BlogService(IBlogPostRepository repository, IMemoryCache memoryCach
 
     public async Task<BlogPost?> UpdateAsync(int id, CreateBlogPostDto dto, CancellationToken ct = default)
     {
+        validator.ValidateAndThrow(dto);
         var post = await repository.GetByIdAsync(id, ct);
         if (post == null)
             return null;