Add project files

2025-10-04 13:27:29 +03:00
parent 75eba696c9
commit cc53824229
46 changed files with 3328 additions and 7 deletions
--- a/T120B165-ImgBoard/Services/PostService.cs
+++ b/T120B165-ImgBoard/Services/PostService.cs
@@ -0,0 +1,100 @@
+using Microsoft.EntityFrameworkCore;
+using T120B165_ImgBoard.Data;
+using T120B165_ImgBoard.Models;
+using T120B165_ImgBoard.Utils;
+using File = T120B165_ImgBoard.Models.File;
+
+namespace T120B165_ImgBoard.Services;
+
+public interface IPostService
+{
+    Task<CreatedPost> Create(
+        string title, string description, List<Tag> tags, User author,
+        string fileName, string fileContentType, long fileSize);
+    Task<Post?> GetById(int postId, bool includeUnfinished = false);
+    Task<PagedList<Post>> GetAll(int pageNumber = 1);
+    Task<bool> Delete(Post post);
+    Task<Post> Update(Post post);
+}
+
+public record CreatedPost(Post Post, File File);
+
+public class PostService(ImgBoardContext context): IPostService
+{
+    private const int PageSize = 20;
+    public async Task<CreatedPost> Create(
+        string title,
+        string description,
+        List<Tag> tags,
+        User author,
+        string fileName,
+        string fileContentType,
+        long fileSize
+        )
+    {
+        var file = new File
+        {
+            OriginalFileName = fileName,
+            Size = fileSize,
+            ContentType = fileContentType,
+            FilePath = Path.GetTempFileName(),
+            CreatedDate = DateTime.Now,
+        };
+        await context.Files.AddAsync(file);
+        
+        var entry = new Post
+        {
+            Title = title,
+            Description = description,
+            Author = author,
+            Created = DateTime.Now,
+            Tags = tags,
+            File = file
+        };
+        await context.Posts.AddAsync(entry);
+        await context.SaveChangesAsync();
+        return new CreatedPost(entry, file);
+    }
+
+    public async Task<Post?> GetById(int postId, bool includeUnfinished = false)
+    {
+        var query = context.Posts.Where(t => t.Id == postId);
+        if (!includeUnfinished)
+        {
+            query = query.Where(t => t.File.FinishedDate != null);
+        }
+            
+        return await query.Include(b => b.Author)
+            .Include(b => b.Tags)
+            .Include(b => b.File)
+            .FirstOrDefaultAsync();
+    }
+
+    public async Task<PagedList<Post>> GetAll(int pageNumber = 1)
+    {
+        var totalCount = await context.Posts.Where(p => p.File.FinishedDate != null).CountAsync();
+        var items = await context.Posts
+            .Skip((pageNumber - 1) * PageSize)
+            .Take(PageSize)
+            .Where(p => p.File.FinishedDate != null)
+            .Include(b => b.Author)
+            .Include(b => b.Tags)
+            .Include(b => b.File)
+            .ToListAsync();
+        return new PagedList<Post>(items, pageNumber, PageSize, totalCount);
+    }
+
+    public async Task<bool> Delete(Post post)
+    {
+        context.Posts.Remove(post);
+        await context.SaveChangesAsync();
+        return true;
+    }
+
+    public async Task<Post> Update(Post post)
+    {
+        context.Posts.Update(post);
+        await context.SaveChangesAsync();
+        return post;
+    }
+}