Last modified git-based remark plugin, site URL

astro.config.mjs

@@ -3,10 +3,16 @@ import mdx from '@astrojs/mdx';
 import sitemap from '@astrojs/sitemap';
 import tailwind from "@astrojs/tailwind";
 
+import { remarkModifiedTime } from './src/plugins/remark-last-modified';
 import react from "@astrojs/react";
 
 // https://astro.build/config
 export default defineConfig({
-  site: 'https://example.com',
+  markdown: {
+    remarkPlugins: [
+      remarkModifiedTime
+    ]
+  },
+  site: 'https://handbook.xevion.dev',
   integrations: [mdx(), sitemap(), tailwind(), react()]
 });

package.json

@@ -20,6 +20,7 @@
     "@types/react": "^18.2.64",
     "@types/react-dom": "^18.2.21",
     "astro": "^4.4.15",
+    "dayjs": "^1.11.10",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "sass": "^1.71.1",

pnpm-lock.yaml

@@ -35,6 +35,9 @@ dependencies:
   astro:
     specifier: ^4.4.15
     version: 4.4.15(@types/node@20.11.25)(sass@1.71.1)(typescript@5.4.2)
+  dayjs:
+    specifier: ^1.11.10
+    version: 1.11.10
   react:
     specifier: ^18.2.0
     version: 18.2.0
@@ -1665,6 +1668,10 @@ packages:
     resolution: {integrity: sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==}
     dev: false
 
+  /dayjs@1.11.10:
+    resolution: {integrity: sha512-vjAczensTgRcqDERK0SR2XMwsF/tSvnvlv6VcF2GIhg6Sx4yOIt/irsr1RDJsKiIyBzJDpCoXiWWq28MqH2cnQ==}
+    dev: false
+
   /debug@4.3.4:
     resolution: {integrity: sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==}
     engines: {node: '>=6.0'}

src/plugins/remark-last-modified.ts

@@ -0,0 +1,18 @@
+import type { RemarkPlugins } from "astro";
+import { execSync } from "child_process";
+
+export const remarkModifiedTime: RemarkPlugins[number] = () => {
+  return function (_, file) {
+    const filepath = file.history[0];
+    const command = `git log -1 --pretty="format:%cI" "${filepath}"`;
+    let result = execSync(command).toString();
+
+    // File is not in git yet
+    if (result === "") {
+      result = new Date().toISOString();
+    }
+    
+    // @ts-ignore
+    file.data.astro.frontmatter.lastModified = result;
+  };
+};