feat(algolia): add data deletion functionality and execute in index.js

- Add `checkDataFromAlgolia` function to identify and delete unused data
- Implement `deletePostDataFromAlgolia` helper function
- Execute Algolia data check during homepage generation
- Handle password-protected and draft pages deletion

Fixes 1526

lib/plugins/algolia.js

@@ -15,6 +15,59 @@ const generateAlgoliaSearch = ({ allPages, force = false }) => {
   })
 }
 
+
+/**
+ * 检查数据是否需要从algolia删除
+ * @param {*} props
+ */
+export const checkDataFromAlgolia = async props => {
+  const { allPages } = props
+  const deletions = (allPages || [])
+    .map(p => {
+      if (p && (p.password || p.status === 'Draft')) {
+        return deletePostDataFromAlgolia(p)
+      }
+    })
+    .filter(Boolean) // 去除 undefined
+  await Promise.all(deletions)
+}
+
+/**
+ * 删除数据
+ * @param post
+ */
+const deletePostDataFromAlgolia = async post => {
+  // Connect and authenticate with your Algolia app
+  const client = algoliasearch(BLOG.ALGOLIA_APP_ID, BLOG.ALGOLIA_ADMIN_APP_KEY)
+
+  // Create a new index and add a record
+  const index = client.initIndex(BLOG.ALGOLIA_INDEX)
+
+  if (!post) {
+    return
+  }
+
+  // 检查是否有索引
+  let existed
+  try {
+    existed = await index.getObject(post.id)
+  } catch (error) {
+    // 通常是不存在索引
+  }
+
+  if (existed) {
+    await index
+      .deleteObject(post.id)
+      .wait()
+      .then(r => {
+        console.log('Algolia索引更新', r)
+      })
+      .catch(err => {
+        console.log('Algolia异常', err)
+      })
+  }
+}
+
 /**
  * 上传数据
  * 根据上次修改文章日期和上次更新索引数据判断是否需要更新algolia索引

pages/index.js

@@ -6,6 +6,7 @@ import { generateRss } from '@/lib/rss'
 import { generateSitemapXml } from '@/lib/sitemap.xml'
 import { DynamicLayout } from '@/themes/theme'
 import { generateRedirectJson } from '@/lib/redirect'
+import { checkDataFromAlgolia } from '@/lib/plugins/algolia'
 
 /**
  * 首页布局
@@ -61,6 +62,8 @@ export async function getStaticProps(req) {
   generateRss(props)
   // 生成
   generateSitemapXml(props)
+  // 检查数据是否需要从algolia删除
+  checkDataFromAlgolia(props)
   if (siteConfig('UUID_REDIRECT', false, props?.NOTION_CONFIG)) {
     // 生成重定向 JSON
     generateRedirectJson(props)