Port /blog to App router; add blog preview cards [#134]

package.json

@@ -36,6 +36,7 @@
     "@keyv/sqlite": "^3.6.6",
     "@renovatebot/pep440": "^2.1.20",
     "@smithy/node-http-handler": "^2.1.8",
+    "@types/sanitize-html": "^2.13.0",
     "argparse": "^1.0.10",
     "aws-sdk": "^2.908.0",
     "chalk": "^2.4.1",
@@ -63,7 +64,7 @@
     "luxon": "^3.4.4",
     "make-fetch-happen": "^11.1.1",
     "mapbox-gl": "^3.2.0",
-    "marked": "^0.7.0",
+    "marked": "^14.1.3",
     "mime": "^2.5.2",
     "neat-csv": "^7.0.0",
     "negotiator": "^0.6.2",

static-site/app/blog/[id]/page.tsx

@@ -0,0 +1,126 @@
+import { Metadata } from "next";
+import { redirect } from "next/navigation";
+import React from "react";
+
+import { BigSpacer } from "../../../components/spacers";
+import {
+  siteLogo,
+  siteTitle,
+  siteTitleAlt,
+  siteUrl,
+} from "../../../data/BaseConfig";
+
+import { getBlogPosts, markdownToHtml } from "../utils";
+
+import styles from "./styles.module.css";
+
+// just to avoid having to repeat this in a couple method sigs...
+interface BlogPostParams {
+  id: string;
+}
+
+// return a list of params that will get handed to this page at build
+// time, to statically build out all the blog posts
+export function generateStaticParams(): BlogPostParams[] {
+  return getBlogPosts().map((post) => {
+    return { id: post.blogUrlName };
+  });
+}
+
+// generate opengraph and other metadata tags
+export async function generateMetadata({
+  params,
+}: {
+  params: BlogPostParams;
+}): Promise<Metadata> {
+  const { id } = params;
+
+  // set up some defaults that are independent of the specific blog post
+  const baseUrl = new URL(siteUrl);
+  const metadata: Metadata = {
+    metadataBase: baseUrl,
+    openGraph: {
+      description: siteTitleAlt,
+      images: [
+        {
+          url: `${siteUrl}${siteLogo}`,
+        },
+      ],
+      siteName: siteTitle,
+      title: siteTitle,
+      type: "website",
+      url: baseUrl,
+    },
+  };
+
+  // this is the specific post we're rendering
+  const blogPost = getBlogPosts().find((post) => post.blogUrlName === id);
+
+  if (blogPost) {
+    const description = `Nextstrain blog post from ${blogPost.date}; author(s): ${blogPost.author}`;
+
+    metadata.title = blogPost.title;
+    metadata.description = description;
+    metadata.openGraph!.description = description;
+    metadata.openGraph!.title = `${siteTitle}: ${blogPost.title}`;
+    metadata.openGraph!.url = `/blog/${blogPost.blogUrlName}`;
+  }
+
+  return metadata;
+}
+
+export default async function BlogPost({
+  params,
+}: {
+  params: BlogPostParams;
+}): Promise<React.ReactElement> {
+  const { id } = params;
+
+  // we need this list to build the archive list in the sidebar
+  const allBlogPosts = getBlogPosts();
+
+  // and then this is the specific post we're rendering
+  const blogPost = allBlogPosts.find((post) => post.blogUrlName === id);
+
+  // if for some reason we didn't find the post, 404 on out
+  if (!blogPost) {
+    redirect("/404");
+  }
+
+  const html = await markdownToHtml(blogPost.mdstring);
+
+  return (
+    <>
+      <BigSpacer count={2} />
+
+      <article className="container">
+        <div className="row">
+          <div className="col-lg-8">
+            <time className={styles.blogPostDate} dateTime={blogPost.date}>
+              {blogPost.date}
+            </time>
+            <h1 className={styles.blogPostTitle}>{blogPost.title}</h1>
+            <h2 className={styles.blogPostAuthor}>{blogPost.author}</h2>
+            <div
+              className={styles.blogPostBody}
+              dangerouslySetInnerHTML={{
+                __html: html,
+              }}
+            />
+          </div>
+          <div className="col-lg-1" />
+          <div className={`${styles.blogSidebar} col-lg-3`}>
+            <h2>Blog Archives</h2>
+            <ul>
+              {allBlogPosts.map((p) => (
+                <li key={p.blogUrlName}>
+                  <a href={p.blogUrlName}>{p.sidebarTitle}</a> ({p.date})
+                </li>
+              ))}
+            </ul>
+          </div>
+        </div>
+      </article>
+    </>
+  );
+}

static-site/app/blog/[id]/styles.module.css

@@ -0,0 +1,71 @@
+.blogPostTitle {
+  clear: both; /* this is to let the title fall under the floated date, not under it */
+  color: black;
+  font-size: 3.5rem;
+  font-weight: 400;
+  line-height: 40px;
+  text-align: left;
+  width: 100%;
+}
+
+.blogPostAuthor {
+  color: black;
+  font-size: 2rem;
+  font-weight: 300;
+  margin: 1rem 0 2rem;
+}
+
+.blogPostDate {
+  color: black;
+  float: right;
+  font-size: 1.4rem;
+  font-weight: 300;
+  min-height: 2rem;
+}
+
+.blogPostBody {
+  color: black;
+  font-size: 1.6rem;
+  font-weight: 300;
+  line-height: var(--niceLineHeight);
+  margin-top: 0px;
+  padding-bottom: 25px;
+  width: 100%;
+}
+
+.blogPostBody img {
+  max-width: 100%;
+}
+
+.blogPostBody h1 {
+  color: black;
+  font-size: 3rem;
+  margin-top: 20px;
+  text-align: left;
+}
+.blogPostBody h2 {
+  font-size: 2.4rem;
+  font-weight: 300;
+  margin-top: 10px;
+}
+.blogPostBody h3 {
+  font-size: 1.8rem;
+  font-weight: 300;
+  margin-top: 10px;
+}
+.blogPostBody p {
+  margin-top: 10px;
+}
+.blogPostBody li {
+  margin-left: 3rem;
+}
+
+.blogSidebar {
+  font-size: 14px;
+}
+.blogSidebar ul {
+  list-style: none;
+}
+.blogSidebar ul li {
+  margin: 1.2rem 0;
+}

static-site/app/blog/page.tsx

@@ -0,0 +1,17 @@
+import { redirect } from "next/navigation";
+
+import { getBlogPosts } from "./utils";
+
+export default function Index(): void {
+  const mostRecentPost = getBlogPosts()[0];
+
+  // _technically_ getBlogPosts() could return an empty array and then
+  // mostRecentPost would be undefined -- to make the type checker
+  // happy, if for some reason mostRecentPost is undefined, we will
+  // detect that and redirect to the 404 page
+  const redirectTo = mostRecentPost
+    ? `/blog/${mostRecentPost.blogUrlName}`
+    : `/404`;
+
+  redirect(redirectTo);
+}