From 83e5757429e8ae82cec4db607f552a04bbf5656a Mon Sep 17 00:00:00 2001
From: Oliver Booth <me@olivr.me>
Date: Tue, 8 Aug 2023 01:30:32 +0100
Subject: [PATCH] feat: delegate blog listing to BlogService

---
 OliverBooth/Pages/Blog/Index.cshtml    | 77 ++++++++++++++++++++++----
 OliverBooth/Pages/Blog/Index.cshtml.cs | 24 ++++++--
 OliverBooth/Program.cs                 |  1 +
 OliverBooth/Services/BlogService.cs    | 32 +++++++++++
 4 files changed, 119 insertions(+), 15 deletions(-)
 create mode 100644 OliverBooth/Services/BlogService.cs

diff --git a/OliverBooth/Pages/Blog/Index.cshtml b/OliverBooth/Pages/Blog/Index.cshtml
index b17bfed..565a365 100644
--- a/OliverBooth/Pages/Blog/Index.cshtml
+++ b/OliverBooth/Pages/Blog/Index.cshtml
@@ -1,16 +1,73 @@
 @page
+@using Humanizer
 @using OliverBooth.Data.Blog
+@using OliverBooth.Services
 @model OliverBooth.Pages.Blog.Index
+@inject BlogService BlogService
 
-@foreach (BlogPost post in Model.BlogPosts)
+@foreach (BlogPost post in BlogService.AllPosts)
 {
-    <h2>
-        <a asp-page="/blog/article" asp-route-year="@post.Published.Year" asp-route-month="@post.Published.Month.ToString().PadLeft(2, '0')" asp-route-slug="@post.Slug">@post.Title</a>
-    </h2>
-    <p class="text-muted">@post.Published.ToString("MMMM dd, yyyy") &bull; @Model.GetAuthor(post)?.Name</p>
-    <p>@Html.Raw(Model.SanitizeContent(Model.TrimContent(post.Body, out bool trimmed)))</p>
-    if (trimmed)
-    {
-        <p><a asp-page="/blog/article" asp-route-year="@post.Published.Year" asp-route-month="@post.Published.Month.ToString().PadLeft(2, '0')" asp-route-slug="@post.Slug">Read more...</a></p>
-    }
+    Author? author = Model.GetAuthor(post);
+    DateTimeOffset published = post.Published;
+    var year = published.ToString("yyyy");
+    var month = published.ToString("MM");
+    var day = published.ToString("dd");
+
+    bool isLegacyPost = post.WordPressId is not null;
+    string disqusDomain = isLegacyPost ? "https://blog.oliverbooth.dev" : "https://oliverbooth.dev/blog";
+    string disqusId = isLegacyPost ? $"{post.WordPressId} {disqusDomain}/?p={post.WordPressId}" : post.Id.ToString();
+
+    <div class="card blog-card" style="margin-bottom: 50px;">
+        <div class="card-body">
+            <h2>
+                <a asp-page="/blog/article"
+                   asp-route-year="@year"
+                   asp-route-month="@month"
+                   asp-route-day="@day"
+                   asp-route-slug="@post.Slug">
+                    @post.Title
+                </a>
+            </h2>
+
+            <p class="text-muted">
+                <img class="blog-author-icon" src="https://gravatar.com/avatar/@author?.AvatarHash?s=28">
+                @author?.Name
+                &bull;
+                <abbr data-bs-toggle="tooltip" data-bs-title="@post.Published.ToString("f")">
+                    @post.Published.Humanize()
+                </abbr>
+                @if (post.EnableComments)
+                {
+                    <span>&bull;</span>
+                    <a asp-page="/blog/article"
+                       asp-route-year="@year"
+                       asp-route-month="@month"
+                       asp-route-day="@day"
+                       asp-route-slug="@post.Slug"
+                       asp-fragment="disqus_thread" data-disqus-identifier="@disqusId">
+                        0 Comments
+                    </a>
+                }
+            </p>
+
+            <p>@Html.Raw(Model.SanitizeContent(Model.TrimContent(post.Body, out bool trimmed)))</p>
+
+            <article>
+                @if (trimmed)
+                {
+                    <p>
+                        <a asp-page="/blog/article"
+                           asp-route-year="@year"
+                           asp-route-month="@month"
+                           asp-route-day="@day"
+                           asp-route-slug="@post.Slug">
+                            Read more...
+                        </a>
+                    </p>
+                }
+            </article>
+        </div>
+    </div>
+
+    <script id="dsq-count-scr" src="https://oliverbooth-dev.disqus.com/count.js" async></script>
 }
\ No newline at end of file
diff --git a/OliverBooth/Pages/Blog/Index.cshtml.cs b/OliverBooth/Pages/Blog/Index.cshtml.cs
index 58c6d83..3b960e6 100644
--- a/OliverBooth/Pages/Blog/Index.cshtml.cs
+++ b/OliverBooth/Pages/Blog/Index.cshtml.cs
@@ -1,4 +1,5 @@
 using Humanizer;
+using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
 using Microsoft.EntityFrameworkCore;
 using OliverBooth.Data;
@@ -19,7 +20,7 @@ public class Index : PageModel
 
     public string SanitizeContent(string content)
     {
-        content = content.Replace("<more>", string.Empty);
+        content = content.Replace("<!--more-->", string.Empty);
 
         while (content.Contains("\n\n"))
         {
@@ -32,20 +33,33 @@ public class Index : PageModel
     public string TrimContent(string content, out bool trimmed)
     {
         ReadOnlySpan<char> span = content.AsSpan();
-        int moreIndex = span.IndexOf("<more>", StringComparison.Ordinal);
+        int moreIndex = span.IndexOf("<!--more-->", StringComparison.Ordinal);
         trimmed = moreIndex != -1 || span.Length > 256;
         return moreIndex != -1 ? span[..moreIndex].Trim().ToString() : content.Truncate(256);
     }
-    
+
     public Author? GetAuthor(BlogPost post)
     {
         using BlogContext context = _dbContextFactory.CreateDbContext();
         return context.Authors.FirstOrDefault(a => a.Id == post.AuthorId);
     }
 
-    public void OnGet()
+    public IActionResult OnGet([FromQuery(Name = "p")] int? postId = null)
     {
         using BlogContext context = _dbContextFactory.CreateDbContext();
-        BlogPosts = context.BlogPosts.ToArray();
+        if (postId is null)
+        {
+            BlogPosts = context.BlogPosts.ToArray();
+            return Page();
+        }
+
+        BlogPost? post = context.BlogPosts.FirstOrDefault(p => p.WordPressId == postId);
+
+        if (post is not null)
+        {
+            return Redirect($"/blog/{post.Published:yyyy/MM}/{post.Slug}");
+        }
+
+        return NotFound();
     }
 }
diff --git a/OliverBooth/Program.cs b/OliverBooth/Program.cs
index 8155825..4771bcf 100644
--- a/OliverBooth/Program.cs
+++ b/OliverBooth/Program.cs
@@ -27,6 +27,7 @@ builder.Services.AddSingleton(new MarkdownPipelineBuilder()
 
 builder.Services.AddDbContextFactory<BlogContext>();
 builder.Services.AddDbContextFactory<WebContext>();
+builder.Services.AddSingleton<BlogService>();
 builder.Services.AddRazorPages().AddRazorRuntimeCompilation();
 builder.Services.AddControllersWithViews();
 builder.Services.AddRouting(options => options.LowercaseUrls = true);
diff --git a/OliverBooth/Services/BlogService.cs b/OliverBooth/Services/BlogService.cs
new file mode 100644
index 0000000..dc005d2
--- /dev/null
+++ b/OliverBooth/Services/BlogService.cs
@@ -0,0 +1,32 @@
+using Microsoft.EntityFrameworkCore;
+using OliverBooth.Data;
+using OliverBooth.Data.Blog;
+
+namespace OliverBooth.Services;
+
+public sealed class BlogService
+{
+    private IDbContextFactory<BlogContext> _dbContextFactory;
+
+    /// <summary>
+    ///     Initializes a new instance of the <see cref="BlogService" /> class.
+    /// </summary>
+    /// <param name="dbContextFactory">The <see cref="IDbContextFactory{TContext}" />.</param>
+    public BlogService(IDbContextFactory<BlogContext> dbContextFactory)
+    {
+        _dbContextFactory = dbContextFactory;
+    }
+
+    /// <summary>
+    ///     Gets a read-only view of all blog posts.
+    /// </summary>
+    /// <returns>A read-only view of all blog posts.</returns>
+    public IReadOnlyCollection<BlogPost> AllPosts
+    {
+        get
+        {
+            using BlogContext context = _dbContextFactory.CreateDbContext();
+            return context.BlogPosts.OrderByDescending(p => p.Published).ToArray();
+        }
+    }
+}