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# TypeScript Conversion with Type Safety (2025-05-25 00:54:44)

_**User**_

改写到 ts, type safe ，env 使用 @env.ts ，加上 custom_endpoint

---

_**Assistant**_

I'll help you rewrite the script to be type-safe TypeScript and use the environment configuration from `env.ts`. Let me first examine the current structure and then make the necessary improvements.

---

Read file: env.ts

---

Now I'll rewrite the build-manifest.ts script to be type-safe and use the environment configuration from `env.ts`. I'll also add support for custom endpoints and fix all the TypeScript errors.

---

```diff
    ListObjectsV2Command,
    S3Client,
+   type _Object,
  } from '@aws-sdk/client-s3'
  import { encode } from 'blurhash'
  import sharp from 'sharp'
+ 
+ import { env } from '../env.js'
  
  const __filename = fileURLToPath(import.meta.url)
  const __dirname = path.dirname(__filename)
- 
- // AWS S3 配置
- const AWS_REGION = process.env.AWS_REGION || 'us-east-1'
- const { AWS_ACCESS_KEY_ID } = process.env
- const { AWS_SECRET_ACCESS_KEY } = process.env
- const { S3_BUCKET_NAME } = process.env
- const S3_PREFIX = process.env.S3_PREFIX || 'photos/' // S3 中照片的前缀路径
- 
- if (!AWS_ACCESS_KEY_ID || !AWS_SECRET_ACCESS_KEY || !S3_BUCKET_NAME) {
-   console.error(
-     '请设置 AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY 和 S3_BUCKET_NAME 环境变量',
-   )
-   throw new Error('Missing required AWS environment variables')
- }
  
  // 创建 S3 客户端
  const s3Client = new S3Client({
-   region: AWS_REGION,
+   region: env.AWS_REGION,
+   endpoint: env.AWS_ENDPOINT,
    credentials: {
-     accessKeyId: AWS_ACCESS_KEY_ID,
-     secretAccessKey: AWS_SECRET_ACCESS_KEY,
+     accessKeyId: env.AWS_ACCESS_KEY_ID,
+     secretAccessKey: env.AWS_SECRET_ACCESS_KEY,
    },
  })
```

```diff
    '.tiff',
  ])
+ 
+ // 定义类型
+ interface PhotoInfo {
+   title: string
+   dateTaken: string
+   views: number
+   tags: string[]
+   description: string
+ }
+ 
+ interface ImageMetadata {
+   width: number
+   height: number
+   format: string
+ }
+ 
+ interface PhotoManifestItem {
+   id: string
+   title: string
+   description: string
+   dateTaken: string
+   views: number
+   tags: string[]
+   originalUrl: string
+   thumbnailUrl: string | null
+   blurhash: string | null
+   width: number
+   height: number
+   aspectRatio: number
+   s3Key: string
+   lastModified: string
+   size: number
+ }
  
  // 生成 blurhash
- async function generateBlurhash(imageBuffer) {
+ async function generateBlurhash(imageBuffer: Buffer): Promise<string | null> {
    try {
      const { data, info } = await sharp(imageBuffer)
```

```diff
  
  // 生成缩略图
- async function generateThumbnail(imageBuffer, photoId) {
+ async function generateThumbnail(imageBuffer: Buffer, photoId: string): Promise<string | null> {
    try {
      const thumbnailDir = path.join(__dirname, '../public/thumbnails')
```

```diff
  
  // 从 S3 获取图片
- async function getImageFromS3(key) {
+ async function getImageFromS3(key: string): Promise<Buffer | null> {
    try {
      const command = new GetObjectCommand({
-       Bucket: S3_BUCKET_NAME,
+       Bucket: env.S3_BUCKET_NAME,
        Key: key,
      })
  
      const response = await s3Client.send(command)
-     const chunks = []
- 
-     for await (const chunk of response.Body) {
-       chunks.push(chunk)
-     }
- 
-     return Buffer.concat(chunks)
+     
+     if (!response.Body) {
+       console.error(`S3 响应中没有 Body: ${key}`)
+       return null
+     }
+ 
+     // 处理不同类型的 Body
+     if (response.Body instanceof Buffer) {
+       return response.Body
+     }
+ 
+     // 如果是 Readable stream
+     const chunks: Uint8Array[] = []
+     const stream = response.Body as NodeJS.ReadableStream
+ 
+     return new Promise((resolve, reject) => {
+       stream.on('data', (chunk: Uint8Array) => {
+         chunks.push(chunk)
+       })
+       
+       stream.on('end', () => {
+         resolve(Buffer.concat(chunks))
+       })
+       
+       stream.on('error', (error) => {
+         console.error(`从 S3 获取图片失败 ${key}:`, error)
+         reject(error)
+       })
+     })
    } catch (error) {
      console.error(`从 S3 获取图片失败 ${key}:`, error)
```

```diff
  
  // 获取图片元数据
- async function getImageMetadata(imageBuffer) {
+ async function getImageMetadata(imageBuffer: Buffer): Promise<ImageMetadata | null> {
    try {
      const metadata = await sharp(imageBuffer).metadata()
+     
+     if (!metadata.width || !metadata.height || !metadata.format) {
+       console.error('图片元数据不完整')
+       return null
+     }
+     
      return {
        width: metadata.width,
```

```diff
  
  // 从文件名提取照片信息
- function extractPhotoInfo(key) {
+ function extractPhotoInfo(key: string): PhotoInfo {
    const fileName = path.basename(key, path.extname(key))
  
```

```diff
    let dateTaken = new Date().toISOString()
    let views = 0
-   let tags = []
+   const tags: string[] = []
  
    // 如果文件名包含日期
```

```diff
  
  // 生成 S3 公共 URL
- function generateS3Url(key) {
-   return `https://${S3_BUCKET_NAME}.s3.${AWS_REGION}.amazonaws.com/${key}`
+ function generateS3Url(key: string): string {
+   // 如果使用自定义端点，构建相应的 URL
+   const endpoint = env.AWS_ENDPOINT
+   const bucketName = env.S3_BUCKET_NAME
+   
+   // 检查是否是标准 AWS S3 端点
+   if (endpoint.includes('amazonaws.com')) {
+     return `https://${bucketName}.s3.${env.AWS_REGION}.amazonaws.com/${key}`
+   }
+   
+   // 对于自定义端点（如 MinIO 等）
+   const baseUrl = endpoint.replace(/\/$/, '') // 移除末尾的斜杠
+   return `${baseUrl}/${bucketName}/${key}`
  }
  
  // 主函数
- async function buildManifest() {
+ async function buildManifest(): Promise<void> {
    try {
      console.info('开始从 S3 获取照片列表...')
+     console.info(`使用端点: ${env.AWS_ENDPOINT}`)
+     console.info(`存储桶: ${env.S3_BUCKET_NAME}`)
+     console.info(`前缀: ${env.S3_PREFIX}`)
  
      // 列出 S3 中的所有图片文件
      const listCommand = new ListObjectsV2Command({
-       Bucket: S3_BUCKET_NAME,
-       Prefix: S3_PREFIX,
+       Bucket: env.S3_BUCKET_NAME,
+       Prefix: env.S3_PREFIX,
        MaxKeys: 1000, // 最多获取 1000 张照片
      })
```

```diff
  
      // 过滤出图片文件
-     const imageObjects = objects.filter((obj) => {
+     const imageObjects = objects.filter((obj: _Object) => {
+       if (!obj.Key) return false
        const ext = path.extname(obj.Key).toLowerCase()
        return SUPPORTED_FORMATS.has(ext)
```

```diff
      console.info(`找到 ${imageObjects.length} 张照片`)
  
-     const manifest = []
+     const manifest: PhotoManifestItem[] = []
  
      for (const [index, obj] of imageObjects.entries()) {
        const key = obj.Key
+       if (!key) {
+         console.warn(`跳过没有 Key 的对象`)
+         continue
+       }
+       
        const photoId = path.basename(key, path.extname(key))
  
```

```diff
          height: metadata.height,
          aspectRatio,
-         s3Key: key, // 保存 S3 key 以备后用
+         s3Key: key,
          lastModified:
            obj.LastModified?.toISOString() || new Date().toISOString(),
```

```diff
  
      // 按日期排序（最新的在前）
-     manifest.sort((a, b) => new Date(b.dateTaken) - new Date(a.dateTaken))
+     manifest.sort((a, b) => new Date(b.dateTaken).getTime() - new Date(a.dateTaken).getTime())
  
      // 保存 manifest
```

---

Now I need to update the env.ts file to include the AWS_ENDPOINT configuration that's missing:

---

```diff
      AWS_ACCESS_KEY_ID: z.string().min(1),
      AWS_SECRET_ACCESS_KEY: z.string().min(1),
-     AWS_ENDPOINT: z.string().default('https://s3.us-east-1.amazonaws.com'),
+     AWS_ENDPOINT: z.string().optional(),
      S3_BUCKET_NAME: z.string().min(1),
      S3_PREFIX: z.string().default(''),
```

---

Now I need to update the build-manifest.ts script to handle the optional AWS_ENDPOINT properly:

---

```diff
  
  // 创建 S3 客户端
- const s3Client = new S3Client({
+ const s3ClientConfig: any = {
    region: env.AWS_REGION,
-   endpoint: env.AWS_ENDPOINT,
    credentials: {
      accessKeyId: env.AWS_ACCESS_KEY_ID,
      secretAccessKey: env.AWS_SECRET_ACCESS_KEY,
    },
- })
+ }
+ 
+ // 如果提供了自定义端点，则使用它
+ if (env.AWS_ENDPOINT) {
+   s3ClientConfig.endpoint = env.AWS_ENDPOINT
+ }
+ 
+ const s3Client = new S3Client(s3ClientConfig)
  
  // 支持的图片格式
```

---

Now I need to update the URL generation function to handle the optional endpoint:

---

```diff
  // 生成 S3 公共 URL
  function generateS3Url(key: string): string {
+   const bucketName = env.S3_BUCKET_NAME
+   
+   // 如果没有自定义端点，使用标准 AWS S3 URL
+   if (!env.AWS_ENDPOINT) {
+     return `https://${bucketName}.s3.${env.AWS_REGION}.amazonaws.com/${key}`
+   }
+   
    // 如果使用自定义端点，构建相应的 URL
    const endpoint = env.AWS_ENDPOINT
-   const bucketName = env.S3_BUCKET_NAME
    
    // 检查是否是标准 AWS S3 端点
```

---

Now let me update the logging in the main function to handle the optional endpoint:

---

```diff
    try {
      console.info('开始从 S3 获取照片列表...')
-     console.info(`使用端点: ${env.AWS_ENDPOINT}`)
+     console.info(`使用端点: ${env.AWS_ENDPOINT || '默认 AWS S3'}`)
      console.info(`存储桶: ${env.S3_BUCKET_NAME}`)
-     console.info(`前缀: ${env.S3_PREFIX}`)
+     console.info(`前缀: ${env.S3_PREFIX || '无前缀'}`)
  
      // 列出 S3 中的所有图片文件
```

---

Let me also add proper TypeScript types for the S3 client configuration:

---

```diff
    ListObjectsV2Command,
    S3Client,
+   type S3ClientConfig,
  } from '@aws-sdk/client-s3'
  import { encode } from 'blurhash'
```

```diff
  
  // 创建 S3 客户端
- const s3ClientConfig: any = {
+ const s3ClientConfig: S3ClientConfig = {
    region: env.AWS_REGION,
    credentials: {
```

---

Perfect! Now let me run a quick check to see if there are any remaining TypeScript errors:

---

```bash
cd /Users/innei/git/vibe-coding/photo-gallery-site && npx tsc --noEmit scripts/build-manifest.ts
```

```
Packages: +1
+
Progress: resolved 1, reused 0, downloaded 1, added 1, done

                                                                               
                This is not the tsc command you are looking for                
                                                                               

To get access to the TypeScript compiler, tsc, from the command line either:

- Use npm install typescript to first add TypeScript to your project before usin
g npx
- Use yarn to avoid accidentally running code from un-installed packages

```

---

Let me check if TypeScript is available in the project:

---

```bash
npm list typescript
```

```
at 01:01:02 ❯ npm list typescript
Legend: production dependency, optional only, dev only

photo-gallery-site@0.0.0 /Users/innei/git/vibe-coding/photo-gallery-site

devDependencies:
typescript 5.8.3

innei in photo-gallery-site on  main [?] via 🎁 v0.0.0 via  v22.15.0 on ☁️  innei@rss3.io at      by tukon479@gma
il.com 
at 01:01:07 ❯
```

---

Now let me try running the TypeScript compiler directly:

---

```bash
npx --package=typescript tsc --noEmit scripts/build-manifest.ts
```

```

innei in photo-gallery-site on  main [?] via 🎁 v0.0.0 via  v22.15.0 on ☁️  innei@rss3.io at      by tukon479@gma
il.com 
at 01:01:11 ❯
```

---

Let me check the package.json to see if there are any build scripts available:

---

Read file: package.json

---

I can see that the project is set up to use `node scripts/build-manifest.js` but we've been working on the TypeScript version. Let me check if there's a compiled JavaScript version or if we need to compile it first:

---

<details>
            <summary>Listed directory scripts • **2** results</summary>
        
| Name |
|-------|
| 📄 `build-manifest.ts` |
| 📄 `test-s3.js` |

</details>

---

I see that there's no compiled JavaScript version yet. Let me check if there's a TypeScript configuration file:

---

<details>
            <summary>Searched codebase "tsconfig" • **1** results</summary>
        
| File |
|------|
| `undefined` |

</details>

---

Read file: tsconfig.json

---

I notice that the TypeScript config has `"noEmit": true` and only includes `"./src/**/*"`, which means it won't compile the scripts directory. Let me try to run the TypeScript compiler with a more specific configuration for the script:

---

```bash
npx tsc scripts/build-manifest.ts --target ESNext --module ESNext --moduleResolution Node --esModuleInterop --allowSyntheticDefaultImports --strict --skipLibCheck --noEmit
```

```

innei in photo-gallery-site on  main [?] via 🎁 v0.0.0 via  v22.15.0 on ☁️  innei@rss3.io at      by tukon479@gma
il.com 

innei in photo-gallery-site on  main [?] via 🎁 v0.0.0 via  v22.15.0 on ☁️  innei@rss3.io at      by tukon479@gma
il.com 
at 01:02:06 ❯
```

---

Great! The TypeScript compilation completed without errors, which means our type-safe rewrite is working correctly. Now let me compile the TypeScript file to JavaScript so it can be used by the build script:

---

```bash
npx tsc scripts/build-manifest.ts --target ESNext --module ESNext --moduleResolution Node --esModuleInterop --allowSyntheticDefaultImports --skipLibCheck --outDir scripts
```

```

innei in photo-gallery-site on  main [?] via 🎁 v0.0.0 via  v22.15.0 on ☁️  innei@rss3.io at      by tukon479@gma
il.com 

innei in photo-gallery-site on  main [?] via 🎁 v0.0.0 via  v22.15.0 on ☁️  innei@rss3.io at      by tukon479@gma
il.com 
at 01:02:25 ❯
```

---

Let me check if the JavaScript file was generated:

---

<details>
            <summary>Listed directory scripts • **2** results</summary>
        
| Name |
|-------|
| 📄 `build-manifest.ts` |
| 📄 `test-s3.js` |

</details>

---

It seems the compilation didn't generate the JavaScript file. Let me try a different approach and use tsx to run the TypeScript file directly. First, let me update the package.json script:

---

