feat: add pre-render hook

1 files changed, 19 insertions, 0 deletions

diff --git a/src/config.ts b/src/config.ts
index 544d15c..ab0ec12 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,3 +1,4 @@
+import _ from 'lodash';
 import { BenzinConfig  } from './lib/types';
 import nginxAdapter from './lib/nginxAdapter';
 
@@ -11,6 +12,24 @@ const config: BenzinConfig = {
     emojiRoot: '/public/emoji',
     css: '/public/style.css?h=benzin-next-cdn',
   },
+  hooks: {
+    async preRender(path, data, adapter, cdn) {
+      if (path.length === 1 && path[0] === 'index') {
+        // Inject blog preview into home page
+        const blog = await adapter.getMarkdownSource(cdn, ['blog', 'index']);
+        const previewContent = blog
+        .split('\n')
+        .filter(line => line.startsWith('-'))
+        .slice(0, 4)
+        .join('\n');
+
+        const split = data.split('# Recent blog posts');
+        return [split[0], '# Recent blog posts\n', previewContent, split[1]].join('');
+      }
+
+      return data;
+    }
+  },
 };
 
 export default config;