refactor(resources): detect mimetypes

Author: ycdzj

package.json

@@ -29,6 +29,7 @@
     "@types/cookie-parser": "^1.4.10",
     "@types/express": "^5.0.5",
     "@types/jest": "^29.5.14",
+    "@types/mime-types": "^3.0.1",
     "@types/multer": "^1.4.13",
     "@types/node": "^22.19.0",
     "@types/nodemailer": "^6.4.21",
@@ -92,6 +93,7 @@
     "keyv": "^5.5.3",
     "lodash": "^4.17.21",
     "meilisearch": "^0.50.0",
+    "mime-types": "^3.0.1",
     "nanoid": "^5.1.6",
     "nestjs-i18n": "^10.5.1",
     "nestjs-otel": "^7.0.1",

pnpm-lock.yaml

@@ -22,10 +22,8 @@ export class CreateFileReqDto {
   @IsString({
     message: i18nValidationMessage('validation.errors.mimetype.isString'),
   })
-  @IsNotEmpty({
-    message: i18nValidationMessage('validation.errors.mimetype.isNotEmpty'),
-  })
-  mimetype: string;
+  @IsOptional()
+  mimetype?: string;
 
   @Expose()
   @IsNumber(

src/namespace-resources/dto/create-file-req.dto.ts

@@ -1,5 +1,6 @@
 import { InjectRepository } from '@nestjs/typeorm';
 import duplicateName from 'omniboxd/utils/duplicate-name';
+import * as mime from 'mime-types';
 import {
   DataSource,
   EntityManager,
@@ -706,11 +707,15 @@ export class NamespaceResourcesService {
       const message = this.i18n.t('auth.errors.notAuthorized');
       throw new AppException(message, 'NOT_AUTHORIZED', HttpStatus.FORBIDDEN);
     }
+    const mimetype =
+      createReq.mimetype ||
+      mime.lookup(createReq.name) ||
+      'application/octet-stream';
     const file = await this.filesService.createFile(
       userId,
       namespaceId,
       createReq.name,
-      createReq.mimetype,
+      mimetype,
     );
     const url = await this.filesService.generateUploadUrl(file.id);
     const postReq = await this.filesService.generatePostForm(