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DrSousan.Api/Pages/Blog/Index.cshtml.cs

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+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.EntityFrameworkCore;
+using DrSousan.Api.Data;
+using DrSousan.Api.Models;
+
+namespace DrSousan.Api.Pages.Blog;
+
+public class BlogIndexModel : PageModel
+{
+    private readonly AppDbContext _db;
+    private const int PageSize = 10;
+
+    public BlogIndexModel(AppDbContext db) => _db = db;
+
+    public List<BlogPost>     Posts      { get; private set; } = new();
+    public List<BlogCategory> Categories { get; private set; } = new();
+    public int  CurrentPage   { get; private set; } = 1;
+    public int  TotalPages    { get; private set; } = 1;
+    public int  TotalPosts    { get; private set; } = 0;
+    public string? ActiveCat  { get; private set; }
+
+    public async Task<IActionResult> OnGetAsync(int page = 1, string? category = null)
+    {
+        CurrentPage = page < 1 ? 1 : page;
+        ActiveCat   = category;
+
+        var q = _db.BlogPosts.Include(p => p.Category).Where(p => p.IsPublished);
+
+        if (!string.IsNullOrEmpty(category))
+            q = q.Where(p => p.Category != null && p.Category.Slug == category);
+
+        TotalPosts = await q.CountAsync();
+        TotalPages = Math.Max(1, (int)Math.Ceiling(TotalPosts / (double)PageSize));
+
+        if (CurrentPage > TotalPages) CurrentPage = TotalPages;
+
+        Posts = await q
+            .OrderByDescending(p => p.PublishedAt)
+            .Skip((CurrentPage - 1) * PageSize)
+            .Take(PageSize)
+            .ToListAsync();
+
+        Categories = await _db.BlogCategories
+            .Include(c => c.Posts)
+            .ToListAsync();
+
+        ViewData["SiteName"] = await GetSiteNameAsync();
+        ViewData["Title"]    = "وبلاگ | دکتر سوسن آل‌طه";
+
+        return Page();
+    }
+
+    private async Task<string> GetSiteNameAsync()
+    {
+        var s = await _db.SiteSettings
+            .FirstOrDefaultAsync(x => x.Section == "hero" && x.Key == "name");
+        return s?.Value ?? "دکتر سوسن آل‌طه";
+    }
+}