Feature - Add article readtime (denoland#74)

blog.tsx

@@ -266,9 +266,9 @@ async function loadPost(postsDirectory: string, path: string) {
     ogImage: data.get("og:image"),
     tags: data.get("tags"),
     allowIframes: data.get("allow_iframes"),
+    readTime: readingTime(content),
   };
   POSTS.set(pathname, post);
-  console.log("Load: ", post.pathname);
 }
 
 export async function handler(
@@ -543,3 +543,9 @@ function recordGetter(data: Record<string, unknown>) {
     },
   };
 }
+
+function readingTime(text: string) {
+  const wpm = 225;
+  const words = text.split(/\s+/).length;
+  return Math.ceil(words / wpm);
+}

blog_test.ts

@@ -22,6 +22,7 @@ const BLOG_SETTINGS = await configureBlog(BLOG_URL, false, {
       "second.html": "second",
     }),
   ],
+  readtime: true,
 });
 const CONN_INFO = {
   localAddr: {
@@ -70,6 +71,7 @@ Deno.test("posts/ first", async () => {
   assertStringIncludes(body, `<img src="first/hello.png" />`);
   assertStringIncludes(body, `<p>Lorem Ipsum is simply dummy text`);
   assertStringIncludes(body, `$100, $200, $300, $400, $500`);
+  assertStringIncludes(body, `min read`);
 });
 
 Deno.test("posts/ second", async () => {

components.tsx

@@ -199,6 +199,8 @@ export function PostPage({ post, state }: PostPageProps) {
           <h1 class="text-4xl text-gray-900 dark:text-gray-100 font-bold">
             {post.title}
           </h1>
+          {state.readtime &&
+            <p>{post.readTime} min read</p>}
           <Tags tags={post.tags} />
           <p class="mt-1 text-gray-500">
             {(post.author || state.author) && (

testdata/posts/third.md

@@ -16,3 +16,30 @@ typesetting, remaining essentially unchanged. It was popularised in the 1960s
 with the release of Letraset sheets containing Lorem Ipsum passages, and more
 recently with desktop publishing software like Aldus PageMaker including
 versions of Lorem Ipsum.
+
+Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem
+Ipsum has been the industry's standard dummy text ever since the 1500s, when an
+unknown printer took a galley of type and scrambled it to make a type specimen
+book. It has survived not only five centuries, but also the leap into electronic
+typesetting, remaining essentially unchanged. It was popularised in the 1960s
+with the release of Letraset sheets containing Lorem Ipsum passages, and more
+recently with desktop publishing software like Aldus PageMaker including
+versions of Lorem Ipsum.
+
+Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem
+Ipsum has been the industry's standard dummy text ever since the 1500s, when an
+unknown printer took a galley of type and scrambled it to make a type specimen
+book. It has survived not only five centuries, but also the leap into electronic
+typesetting, remaining essentially unchanged. It was popularised in the 1960s
+with the release of Letraset sheets containing Lorem Ipsum passages, and more
+recently with desktop publishing software like Aldus PageMaker including
+versions of Lorem Ipsum.
+
+Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem
+Ipsum has been the industry's standard dummy text ever since the 1500s, when an
+unknown printer took a galley of type and scrambled it to make a type specimen
+book. It has survived not only five centuries, but also the leap into electronic
+typesetting, remaining essentially unchanged. It was popularised in the 1960s
+with the release of Letraset sheets containing Lorem Ipsum passages, and more
+recently with desktop publishing software like Aldus PageMaker including
+versions of Lorem Ipsum.

types.d.ts

@@ -76,6 +76,8 @@ export interface BlogSettings {
   port?: number;
   /** The hostname to serve the blog on */
   hostname?: string;
+  /** Whether to display readtime or not */
+  readtime?: boolean;
 }
 
 export interface BlogState extends BlogSettings {
@@ -95,4 +97,5 @@ export interface Post {
   ogImage?: string;
   tags?: string[];
   allowIframes?: boolean;
+  readTime: number;
 }