refactoring

src/Yavsc.Server/Exceptions/AuthorizationFailureException.cs

@@ -0,0 +1,17 @@
+namespace Yavsc.Server.Exceptions;
+
+[Serializable]
+public class AuthorizationFailureException : Exception
+{
+    public AuthorizationFailureException(Microsoft.AspNetCore.Authorization.AuthorizationResult auth) : base(auth?.Failure?.ToString()??auth?.ToString()??"AuthorizationResult failure")
+    {
+    }
+
+    public AuthorizationFailureException(string? message) : base(message)
+    {
+    }
+
+    public AuthorizationFailureException(string? message, Exception? innerException) : base(message, innerException)
+    {
+    }
+}

src/Yavsc.Server/Helpers/UserHelpers.cs

@@ -24,7 +24,7 @@ namespace Yavsc.Helpers
             return user.Identity.IsAuthenticated;
         }
 
-        public static IEnumerable<BlogPost> UserPosts(this ApplicationDbContext dbContext, string posterId, string readerId)
+        public static IEnumerable<BlogPost> UserPosts(this ApplicationDbContext dbContext, string posterId, string? readerId)
         {
             if (readerId == null)
             {

src/Yavsc.Server/Services/BlogSpotService.cs

@@ -0,0 +1,162 @@
+
+
+using System.Diagnostics;
+using System.Security.Claims;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.Differencing;
+using Microsoft.EntityFrameworkCore;
+using Org.BouncyCastle.Tls;
+using Yavsc.Helpers;
+using Yavsc.Models;
+using Yavsc.Models.Blog;
+using Yavsc.Server.Exceptions;
+using Yavsc.ViewModels.Auth;
+using Yavsc.ViewModels.Blog;
+
+public class BlogSpotService
+{
+    private readonly ApplicationDbContext _context;
+    private readonly IAuthorizationService _authorizationService;
+
+
+    public BlogSpotService(ApplicationDbContext context,
+    IAuthorizationService authorizationService)
+    {
+        _authorizationService = authorizationService;
+        _context = context;
+    }
+
+    public BlogPost Create(string userId, BlogPostInputViewModel blogInput)
+    {
+        BlogPost post = new BlogPost
+        {
+            Title = blogInput.Title,
+            Content = blogInput.Content,
+            Photo = blogInput.Photo,
+            AuthorId = userId
+        };
+        _context.BlogSpot.Add(post);
+        _context.SaveChanges(userId);
+        return post;
+    }
+    public async Task<BlogPost> GetPostForEdition(ClaimsPrincipal user, long blogPostId)
+    {
+        var blog = await _context.BlogSpot.Include(x => x.Author).Include(x => x.ACL).SingleAsync(m => m.Id == blogPostId);
+        var auth = await _authorizationService.AuthorizeAsync(user, blog, new EditPermission());
+        if (!auth.Succeeded)
+        {
+            throw new AuthorizationFailureException(auth);
+        }
+        return blog;
+    }
+
+    public async Task<BlogPost> Details(ClaimsPrincipal user, long blogPostId)
+    {
+
+        BlogPost blog = await _context.BlogSpot
+       .Include(p => p.Author)
+       .Include(p => p.Tags)
+       .Include(p => p.Comments)
+       .Include(p => p.ACL)
+       .SingleAsync(m => m.Id == blogPostId);
+        if (blog == null)
+        {
+            return null;
+        }
+        var auth = await _authorizationService.AuthorizeAsync(user, blog, new ReadPermission());
+        if (!auth.Succeeded)
+        {
+            throw new AuthorizationFailureException(auth);
+        }
+        foreach (var c in blog.Comments)
+        {
+            c.Author = _context.Users.First(u => u.Id == c.AuthorId);
+        }
+        return blog;
+    }
+
+    public async Task Modify(ClaimsPrincipal user, BlogPostEditViewModel blogEdit)
+    {
+        var blog = _context.BlogSpot.SingleOrDefault(b => b.Id == blogEdit.Id);
+        Debug.Assert(blog != null);
+        var auth = await _authorizationService.AuthorizeAsync(user, blog, new EditPermission());
+        if (!auth.Succeeded)
+        {
+            throw new AuthorizationFailureException(auth);
+        }
+        blog.Content = blogEdit.Content;
+        blog.Title = blogEdit.Title;
+        blog.Photo = blogEdit.Photo;
+        blog.ACL = blogEdit.ACL;
+        // saves the change
+        _context.Update(blog);
+        _context.SaveChanges(user.GetUserId());
+    }
+
+    public async Task<IEnumerable<IGrouping<String, BlogPost>>> IndexByTitle(ClaimsPrincipal user, string id, int skip = 0, int take = 25)
+    {
+        IEnumerable<BlogPost> posts;
+
+        if (user.Identity.IsAuthenticated)
+        {
+            string viewerId = user.GetUserId();
+            long[] usercircles = await _context.Circle.Include(c => c.Members).
+                Where(c => c.Members.Any(m => m.MemberId == viewerId))
+                .Select(c => c.Id).ToArrayAsync();
+
+            posts = _context.BlogSpot
+                .Include(b => b.Author)
+                .Include(p => p.ACL)
+                .Include(p => p.Tags)
+                .Include(p => p.Comments)
+                .Where(p => (p.ACL.Count == 0)
+                || (p.AuthorId == viewerId)
+                || (usercircles != null && p.ACL.Any(a => usercircles.Contains(a.CircleId)))
+                );
+        }
+        else
+        {
+            posts = _context.blogspotPublications
+            .Include(p => p.BlogPost)
+           .Include(b => b.BlogPost.Author)
+           .Include(p => p.BlogPost.ACL)
+           .Include(p => p.BlogPost.Tags)
+           .Include(p => p.BlogPost.Comments)
+           .Where(p => p.BlogPost.ACL.Count == 0).Select(p => p.BlogPost).ToArray();
+        }
+
+        var data = posts.OrderByDescending(p => p.DateCreated);
+        var grouped = data.GroupBy(p => p.Title).Skip(skip).Take(take);
+        return grouped;
+    }
+
+    public async Task Delete(ClaimsPrincipal user, long id)
+    {
+        var uid = user.GetUserId();
+        BlogPost blog = _context.BlogSpot.Single(m => m.Id == id);
+
+        _context.BlogSpot.Remove(blog);
+        _context.SaveChanges(user.GetUserId());
+    }
+
+    public async Task<IEnumerable<BlogPost>> UserPosts(
+        string posterName,
+        string? readerId,
+        int pageLen = 10,
+        int pageNum = 0)
+    {
+        string? posterId = (await _context.Users.SingleOrDefaultAsync(u => u.UserName == posterName))?.Id ?? null;
+        if (posterId == null) return Array.Empty<BlogPost>();
+        return _context.UserPosts(posterId, readerId);
+    }
+
+    public object? ByTitle(string title)
+    {
+        return _context.BlogSpot.Include(
+                 b => b.Author
+             ).Where(x => x.Title == title).OrderByDescending(
+                 x => x.DateCreated
+             ).ToList();
+    }
+}