From 217c1d660e884abec68712acd2b7c691fd161cf2 Mon Sep 17 00:00:00 2001
From: Oliver Booth <me@olivr.me>
Date: Thu, 10 Aug 2023 14:36:51 +0100
Subject: [PATCH] feat: use Handlebars to render template excerpt card

---
 OliverBooth/Pages/Blog/Index.cshtml | 86 ++++++++---------------------
 src/ts/UI.ts                        |  4 ++
 src/ts/app.ts                       | 76 +++++++------------------
 3 files changed, 47 insertions(+), 119 deletions(-)

diff --git a/OliverBooth/Pages/Blog/Index.cshtml b/OliverBooth/Pages/Blog/Index.cshtml
index a3631d0..2bd051a 100644
--- a/OliverBooth/Pages/Blog/Index.cshtml
+++ b/OliverBooth/Pages/Blog/Index.cshtml
@@ -1,9 +1,5 @@
 @page
-@using Humanizer
-@using OliverBooth.Data.Blog
-@using OliverBooth.Services
 @model OliverBooth.Pages.Blog.Index
-@inject BlogService BlogService
 
 <div id="all-blog-posts">
     <div id="blog-loading-spinner" class="d-flex justify-content-center">
@@ -13,67 +9,33 @@
     </div>
 </div>
 
-@foreach (BlogPost post in ArraySegment<BlogPost>.Empty /*BlogService.AllPosts*/)
-{
-    BlogService.TryGetAuthor(post, out Author? author);
-    DateTimeOffset published = post.Published;
-    DateTimeOffset timestamp = post.Updated ?? published;
-    bool isUpdated = post.Updated.HasValue;
-    var year = published.ToString("yyyy");
-    var month = published.ToString("MM");
-    var day = published.ToString("dd");
+<script id="blog-post-template" type="text/x-handlebars-template">
+    <div class="card-body">
+        <h2>
+            <a href="{{post.url}}"> {{post.title}}</a>
+        </h2>
 
-    <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
+        <p class="text-muted">
+            <img class="blog-author-icon" src="{{author.avatar}}" alt="{{author.name}}">
+            <span>{{author.name}}<span>
+            <span> &bull; </span>
+            <span title="{{ post.date }}">{{ post.date_humanized }}</span>
+            {{#if post.enable_comments}}
+                <span> &bull; </span>
+                <a href="{{post.url}}#disqus_thread" data-disqus-identifier="{{post.disqus_identifier}}">
+                    0 Comments
                 </a>
-            </h2>
+            {{/if}}
+        </p>
 
-            <p class="text-muted">
-                <img class="blog-author-icon" src="https://gravatar.com/avatar/@author?.AvatarHash?s=28" alt="@author?.Name">
-                @author?.Name &bull;
+        <p>{{{post.excerpt}}}</p>
 
-                <abbr data-bs-toggle="tooltip" data-bs-title="@timestamp.ToString("f")">
-                    @(isUpdated ? "Updated" : "Published") @timestamp.Humanize()
-                </abbr>
-
-                @if (post.EnableComments)
-                {
-                    <span> &bull;</span>
-                    <a asp-page="/blog/article"
-                       asp-fragment="disqus_thread"
-                       asp-route-year="@year"
-                       asp-route-month="@month"
-                       asp-route-day="@day"
-                       asp-route-slug="@post.Slug"
-                       data-disqus-identifier="@post.GetDisqusIdentifier()">
-                        0 Comments
-                    </a>
-                }
+        {{#if post.trimmed}}
+            <p>
+                <a href="{{post.url}}">
+                    Read more...
+                </a>
             </p>
-
-            <p>@Html.Raw(BlogService.GetExcerpt(post, out bool trimmed))</p>
-
-            @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>
-            }
-        </div>
+        {{/if}}
     </div>
-
-    <script id="dsq-count-scr" src="https://oliverbooth-dev.disqus.com/count.js" async></script>
-}
\ No newline at end of file
+</script>
\ No newline at end of file
diff --git a/src/ts/UI.ts b/src/ts/UI.ts
index 93d27d4..f3cae5e 100644
--- a/src/ts/UI.ts
+++ b/src/ts/UI.ts
@@ -2,6 +2,10 @@
     public static get blogPostContainer(): HTMLDivElement {
         return document.querySelector("#all-blog-posts");
     }
+
+    public static get blogPostTemplate(): HTMLDivElement {
+        return document.querySelector("#blog-post-template");
+    }
 }
 
 export default UI;
\ No newline at end of file
diff --git a/src/ts/app.ts b/src/ts/app.ts
index e0bbed7..be64a9d 100644
--- a/src/ts/app.ts
+++ b/src/ts/app.ts
@@ -4,10 +4,12 @@ import UI from "./UI";
 
 declare const bootstrap: any;
 declare const katex: any;
+declare const Handlebars: any;
 
 (() => {
     const blogPostContainer = UI.blogPostContainer;
     if (blogPostContainer) {
+        const template = Handlebars.compile(UI.blogPostTemplate.innerHTML);
         API.getBlogPostCount().then(async (count) => {
             for (let i = 0; i < count; i++) {
                 const posts = await API.getBlogPosts(i, 5);
@@ -21,63 +23,23 @@ declare const katex: any;
                     card.classList.add("animate__fadeIn");
                     card.style.marginBottom = "50px";
 
-                    const cardBody = document.createElement("div");
-                    cardBody.classList.add("card-body");
-                    card.appendChild(cardBody);
-
-                    const postTitle = document.createElement("h2");
-                    postTitle.classList.add("card-title");
-                    cardBody.appendChild(postTitle);
-
-                    const titleLink = document.createElement("a");
-                    titleLink.href = post.url;
-                    titleLink.innerText = post.title;
-                    postTitle.appendChild(titleLink);
-
-                    const metadata = document.createElement("p");
-                    metadata.classList.add("text-muted");
-                    cardBody.appendChild(metadata);
-
-                    const authorIcon = document.createElement("img");
-                    authorIcon.classList.add("blog-author-icon");
-                    authorIcon.src = `https://gravatar.com/avatar/${author.avatarHash}?s=28`;
-                    authorIcon.alt = author.name;
-                    metadata.appendChild(authorIcon);
-
-                    const authorName = document.createElement("span");
-                    authorName.innerHTML = ` ${author.name} &bull; `;
-                    metadata.appendChild(authorName);
-
-                    const postDate = document.createElement("span");
-                    if (post.updated) {
-                        postDate.innerHTML = `Updated ${TimeUtility.formatRelativeTimestamp(post.updated)}`;
-                    } else {
-                        postDate.innerHTML = `Published ${TimeUtility.formatRelativeTimestamp(post.published)}`;
-                    }
-                    metadata.appendChild(postDate);
-
-                    if (post.commentsEnabled) {
-                        const bullet = document.createElement("span");
-                        bullet.innerHTML = " &bull; ";
-                        metadata.appendChild(bullet);
-
-                        const commentCount = document.createElement("a");
-                        commentCount.href = post.url + "#disqus_thread";
-                        commentCount.innerHTML = "0 Comments";
-                        commentCount.setAttribute("data-disqus-identifier", post.identifier);
-                        metadata.appendChild(commentCount);
-                    }
-
-                    const postExcerpt = document.createElement("p");
-                    postExcerpt.innerHTML = post.excerpt;
-                    cardBody.appendChild(postExcerpt);
-
-                    if (post.trimmed) {
-                        const readMoreLink = document.createElement("a");
-                        readMoreLink.href = post.url;
-                        readMoreLink.innerHTML = "Read more &hellip;";
-                        cardBody.appendChild(readMoreLink);
-                    }
+                    const body = template({
+                        post: {
+                            title: post.title,
+                            excerpt: post.excerpt,
+                            url: post.url,
+                            date: TimeUtility.formatRelativeTimestamp(post.published),
+                            date_humanized: `${post.updated ? "Updated" : "Published"} ${post.humanizedTimestamp}`,
+                            enable_comments: post.commentsEnabled,
+                            disqus_identifier: post.identifier,
+                            trimmed: post.trimmed,
+                        },
+                        author: {
+                            name: author.name,
+                            avatar: `https://gravatar.com/avatar/${author.avatarHash}?s=28`,
+                        }
+                    });
+                    card.innerHTML = body.trim();
 
                     blogPostContainer.appendChild(card);
                 }