OliverBooth.Common/Services/IBlogPostService.cs

@@ -24,8 +24,9 @@ public interface IBlogPostService
     ///     Returns the total number of blog posts.
     /// </summary>
     /// <param name="visibility">The post visibility filter.</param>
+    /// <param name="tags">The tags of the posts to return.</param>
     /// <returns>The total number of blog posts.</returns>
-    int GetBlogPostCount(Visibility visibility = Visibility.None);
+    int GetBlogPostCount(Visibility visibility = Visibility.None, string[]? tags = null);
 
     /// <summary>
     ///     Returns a collection of blog posts from the specified page, optionally limiting the number of posts
@@ -33,8 +34,9 @@ public interface IBlogPostService
     /// </summary>
     /// <param name="page">The zero-based index of the page to return.</param>
     /// <param name="pageSize">The maximum number of posts to return per page.</param>
+    /// <param name="tags">The tags of the posts to return.</param>
     /// <returns>A collection of blog posts.</returns>
-    IReadOnlyList<IBlogPost> GetBlogPosts(int page, int pageSize = 10);
+    IReadOnlyList<IBlogPost> GetBlogPosts(int page, int pageSize = 10, string[]? tags = null);
 
     /// <summary>
     ///     Returns the number of legacy comments for the specified post.
@@ -70,8 +72,9 @@ public interface IBlogPostService
     /// </summary>
     /// <param name="pageSize">The page size. Defaults to 10.</param>
     /// <param name="visibility">The post visibility filter.</param>
+    /// <param name="tags">The tags of the posts to return.</param>
     /// <returns>The page count.</returns>
-    int GetPageCount(int pageSize = 10, Visibility visibility = Visibility.None);
+    int GetPageCount(int pageSize = 10, Visibility visibility = Visibility.None, string[]? tags = null);
 
     /// <summary>
     ///     Returns the previous blog post from the specified blog post.

OliverBooth/Pages/Blog/Index.cshtml

@@ -12,7 +12,7 @@
 @await Html.PartialAsync("Partials/_MastodonStatus")
 
 <div id="all-blog-posts">
-    @foreach (IBlogPost post in BlogPostService.GetBlogPosts(0))
+    @foreach (IBlogPost post in BlogPostService.GetBlogPosts(0, tags: Model.Tag))
     {
         @await Html.PartialAsync("Partials/_BlogCard", post)
     }
@@ -22,5 +22,6 @@
 {
     ["UrlRoot"] = "/blog",
     ["Page"] = 1,
-    ["PageCount"] = BlogPostService.GetPageCount(visibility: Visibility.Published)
+    ["Tags"] = Model.Tag,
+    ["PageCount"] = BlogPostService.GetPageCount(visibility: Visibility.Published, tags: Model.Tag)
 })
\ No newline at end of file

OliverBooth/Pages/Blog/Index.cshtml.cs

@@ -15,11 +15,15 @@ public class Index : PageModel
         _blogPostService = blogPostService;
     }
 
+    public string[] Tag { get; private set; } = [];
+
     public IActionResult OnGet([FromQuery(Name = "pid")] Guid? postId = null,
-        [FromQuery(Name = "p")] int? wpPostId = null)
+        [FromQuery(Name = "p")] int? wpPostId = null,
+        [FromQuery(Name = "tag")] string? tag = null)
     {
         if (postId.HasValue == wpPostId.HasValue)
         {
+            Tag = tag?.Split('+').Select(t => t.Replace("%20", " ")).ToArray() ?? [];
             return Page();
         }
 

OliverBooth/Pages/Blog/List.cshtml

@@ -9,7 +9,7 @@
 @await Html.PartialAsync("Partials/_MastodonStatus")
 
 <div id="all-blog-posts">
-    @foreach (IBlogPost post in BlogPostService.GetBlogPosts(Model.PageNumber - 1))
+    @foreach (IBlogPost post in BlogPostService.GetBlogPosts(Model.PageNumber - 1, tags: Model.Tag))
     {
         @await Html.PartialAsync("Partials/_BlogCard", post)
     }
@@ -19,5 +19,6 @@
 {
     ["UrlRoot"] = "/blog",
     ["Page"] = Model.PageNumber,
-    ["PageCount"] = BlogPostService.GetPageCount(visibility: Visibility.Published)
+    ["Tags"] = Model.Tag,
+    ["PageCount"] = BlogPostService.GetPageCount(visibility: Visibility.Published, tags: Model.Tag)
 })
\ No newline at end of file

OliverBooth/Pages/Blog/List.cshtml.cs

@@ -14,12 +14,15 @@ public class List : PageModel
     /// <value>The requested page number.</value>
     public int PageNumber { get; private set; }
 
+    public string[] Tag { get; private set; } = [];
+
     /// <summary>
     ///     Handles the incoming GET request to the page.
     /// </summary>
     /// <param name="page">The requested page number, starting from 1.</param>
+    /// <param name="tag">The tag by which to filter results.</param>
     /// <returns></returns>
-    public IActionResult OnGet([FromRoute(Name = "pageNumber")] int page = 1)
+    public IActionResult OnGet([FromRoute(Name = "pageNumber")] int page = 1, [FromQuery(Name = "tag")] string? tag = null)
     {
         if (page < 2)
         {
@@ -27,6 +30,7 @@ public class List : PageModel
         }
 
         PageNumber = page;
+        Tag = tag?.Split('+').Select(t => t.Replace("%20", " ")).ToArray() ?? [];
         return Page();
     }
 }

OliverBooth/Pages/Shared/Partials/PageTabsUtility.cs

@@ -32,6 +32,8 @@ public class PageTabsUtility
         set => _urlRoot = string.IsNullOrWhiteSpace(value) ? string.Empty : value.Trim();
     }
 
+    public string[]? Tags { get; set; } = [];
+
     /// <summary>
     ///     Shows the bound chevrons for the specified bounds type.
     /// </summary>
@@ -129,7 +131,9 @@ public class PageTabsUtility
     private string GetLinkForPage(int page)
     {
         // page 1 doesn't use /page/n route
-        return page == 1 ? _urlRoot : $"{_urlRoot}/page/{page}";
+        return page == 1
+            ? $"{_urlRoot}{(Tags is { Length: > 0 } ? $"?tag={string.Join('+', Tags)}" : "")}"
+            : $"{_urlRoot}/page/{page}{(Tags is { Length: > 0 } ? $"?tag={string.Join('+', Tags)}" : "")}";
     }
 
     private string ShowLowerBound()

OliverBooth/Pages/Shared/Partials/_PageTabs.cshtml

@@ -7,15 +7,23 @@
     {
         CurrentPage = page,
         PageCount = pageCount,
-        UrlRoot = urlRoot
+        UrlRoot = urlRoot,
+        Tags = ViewData["Tags"] as string[]
     };
 }
 <nav>
     <ul class="pagination justify-content-center">
-        @Html.Raw(utility.ShowBounds(PageTabsUtility.BoundsType.Lower))
-        @Html.Raw(utility.ShowTab(1)) @* always visible *@
-        @Html.Raw(utility.ShowTabWindow())
-        @Html.Raw(utility.ShowTab(pageCount)) @* always visible *@
-        @Html.Raw(utility.ShowBounds(PageTabsUtility.BoundsType.Upper))
+        @if (pageCount == 1)
+        {
+            @Html.Raw(utility.ShowTab(1)) @* always visible *@
+        }
+        else
+        {
+            @Html.Raw(utility.ShowBounds(PageTabsUtility.BoundsType.Lower))
+            @Html.Raw(utility.ShowTab(1)) @* always visible *@
+            @Html.Raw(utility.ShowTabWindow())
+            @Html.Raw(utility.ShowTab(pageCount)) @* always visible *@
+            @Html.Raw(utility.ShowBounds(PageTabsUtility.BoundsType.Upper))
+        }
     </ul>
 </nav>
\ No newline at end of file

OliverBooth/Services/BlogPostService.cs

@@ -36,9 +36,16 @@ internal sealed class BlogPostService : IBlogPostService
     }
 
     /// <inheritdoc />
-    public int GetBlogPostCount(Visibility visibility = Visibility.None)
+    public int GetBlogPostCount(Visibility visibility = Visibility.None, string[]? tags = null)
     {
         using BlogContext context = _dbContextFactory.CreateDbContext();
+        if (tags is { Length: > 0 })
+        {
+            return visibility == Visibility.None
+                ? context.BlogPosts.AsEnumerable().Count(p => !p.IsRedirect && p.Tags.Intersect(tags).Any())
+                : context.BlogPosts.AsEnumerable().Count(p => !p.IsRedirect && p.Visibility == visibility && p.Tags.Intersect(tags).Any());
+        }
+
         return visibility == Visibility.None
             ? context.BlogPosts.Count(p => !p.IsRedirect)
             : context.BlogPosts.Count(p => !p.IsRedirect && p.Visibility == visibility);
@@ -60,13 +67,20 @@ internal sealed class BlogPostService : IBlogPostService
     }
 
     /// <inheritdoc />
-    public IReadOnlyList<IBlogPost> GetBlogPosts(int page, int pageSize = 10)
+    public IReadOnlyList<IBlogPost> GetBlogPosts(int page, int pageSize = 10, string[]? tags = null)
     {
         using BlogContext context = _dbContextFactory.CreateDbContext();
-        return context.BlogPosts
+        IEnumerable<BlogPost> posts = context.BlogPosts
             .Where(p => p.Visibility == Visibility.Published && !p.IsRedirect)
             .OrderByDescending(post => post.Published)
-            .Skip(page * pageSize)
+            .AsEnumerable();
+
+        if (tags is { Length: > 0 })
+        {
+            posts = posts.Where(p => p.Tags.Intersect(tags).Any());
+        }
+
+        return posts.Skip(page * pageSize)
             .Take(pageSize)
             .ToArray().Select(CacheAuthor).ToArray();
     }
@@ -103,9 +117,9 @@ internal sealed class BlogPostService : IBlogPostService
     }
 
     /// <inheritdoc />
-    public int GetPageCount(int pageSize = 10, Visibility visibility = Visibility.None)
+    public int GetPageCount(int pageSize = 10, Visibility visibility = Visibility.None, string[]? tags = null)
     {
-        float postCount = GetBlogPostCount(visibility);
+        float postCount = GetBlogPostCount(visibility, tags);
         return (int)MathF.Ceiling(postCount / pageSize);
     }