From eda7d3aa00b8784de56aaa4dcdc3ae3816bc6ae2 Mon Sep 17 00:00:00 2001
From: Joseph Montanaro <jfmonty2@gmail.com>
Date: Sun, 5 Apr 2026 06:40:18 -0400
Subject: [PATCH] extract post-listing logic

---
 src/lib/content.ts     | 10 ++++++++++
 src/pages/[slug].astro | 11 +++++------
 src/pages/index.astro  |  5 ++---
 src/pages/posts.astro  |  6 +++---
 4 files changed, 20 insertions(+), 12 deletions(-)
 create mode 100644 src/lib/content.ts

diff --git a/src/lib/content.ts b/src/lib/content.ts
new file mode 100644
index 0000000..38a2182
--- /dev/null
+++ b/src/lib/content.ts
@@ -0,0 +1,10 @@
+import { getCollection } from 'astro:content';
+
+
+export async function listPosts() {
+    // all posts in dev, exlucde draft posts in prod
+    let entries = await getCollection('posts', ({ data }) => import.meta.env.DEV || !data.draft);
+    // sort by date descending
+    entries.sort((a, b) => b.data.date.getTime() - a.data.date.getTime());
+    return entries;
+}
diff --git a/src/pages/[slug].astro b/src/pages/[slug].astro
index b9132a7..1a41823 100644
--- a/src/pages/[slug].astro
+++ b/src/pages/[slug].astro
@@ -1,18 +1,17 @@
 ---
-import { getCollection } from 'astro:content';
+import { listPosts } from '@lib/content.ts';
 import BaseLayout from '@layouts/BaseLayout.astro';
 import Post from '@components/Post.astro';
 
 export async function getStaticPaths() {
-    const entries = await getCollection('posts');
-    // unlike `/index` and `/posts`, we want to sort ascending by date here
-    entries.sort((a, b) => a.data.date.getTime() - b.data.date.getTime());
+    const entries = await listPosts();
 
     // for each route, the page gets passed the entry itself, plus the previous and next slugs
     // (if any), so that it can render links to them
     return entries.map((entry, idx) => {
-        const prevSlug = entries[idx - 1]?.id || null;
-        const nextSlug = entries[idx + 1]?.id || null;
+        // entries are sorted in by date descending, so prev has a higher index and next has lower
+        const prevSlug = entries[idx + 1]?.id || null;
+        const nextSlug = entries[idx - 1]?.id || null;
         return {
             params: { slug: entry.id },
             props: { entry, prevSlug, nextSlug },
diff --git a/src/pages/index.astro b/src/pages/index.astro
index 3e8804e..8d940e2 100644
--- a/src/pages/index.astro
+++ b/src/pages/index.astro
@@ -1,10 +1,9 @@
 ---
-import { getCollection } from 'astro:content';
+import { listPosts } from '@lib/content.ts';
 import BaseLayout from '@layouts/BaseLayout.astro';
 import Post from '@components/Post.astro';
 
-const entries = await getCollection('posts');
-entries.sort((a, b) => b.data.date.getTime() - a.data.date.getTime());
+const entries = await listPosts();
 // there will always be at leaste one entry
 const entry = entries[0]!;
 const prevSlug = entries[1] ? entries[1]?.id : null;
diff --git a/src/pages/posts.astro b/src/pages/posts.astro
index 4f75434..e1eba7e 100644
--- a/src/pages/posts.astro
+++ b/src/pages/posts.astro
@@ -1,12 +1,12 @@
 ---
 import '@styles/prose.css';
 
-import { getCollection, render } from 'astro:content';
+import { render } from 'astro:content';
+import { listPosts } from '@lib/content.ts';
 import BaseLayout from '@layouts/BaseLayout.astro';
 
 // return all posts in dev, only non-draft in prod
-let entries = await getCollection('posts', ({ data }) => !data.draft || import.meta.env.DEV );
-entries.sort((a, b) => b.data.date.getTime() - a.data.date.getTime());
+const entries = await listPosts();
 const posts = await Promise.all(entries.map(async entry => {
     const { remarkPluginFrontmatter } = await render(entry);
     return { ...entry, remarkPluginFrontmatter };