feat: Implement pre-signed URL generation for message attachments with dedicated DTO, controller endpoint, and service logic.

src/upload/dto/upload.dto.ts

@@ -6,6 +6,7 @@ export enum UploadFolder {
   DOCUMENTS = 'documents',
   PROPERTIES = 'properties',
   VERIFICATION = 'verification',
+  MESSAGES = 'messages',
 }
 
 export class PresignedUrlDto {
@@ -52,6 +53,22 @@ export class PresignedUrlResponseDto {
   key: string;
 }
 
+export class MessagePresignedUrlDto {
+  @ApiProperty({
+    example: 'photo.jpg',
+    description: 'Original filename',
+  })
+  @IsString()
+  filename: string;
+
+  @ApiProperty({
+    example: 'image/jpeg',
+    description: 'MIME type of the file',
+  })
+  @IsString()
+  contentType: string;
+}
+
 export class AvatarPresignedUrlDto {
   @ApiProperty({
     example: 'profile.jpg',

src/upload/upload.controller.ts

@@ -20,7 +20,8 @@ import {
 } from '@nestjs/swagger';
 import type { Response } from 'express';
 import { UploadService } from './upload.service';
-import { PresignedUrlDto, PresignedUrlResponseDto, AvatarPresignedUrlDto } from './dto';
+import { PresignedUrlDto, PresignedUrlResponseDto, AvatarPresignedUrlDto, MessagePresignedUrlDto } from './dto';
+import { UploadFolder } from './dto';
 import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';
 import { RolesGuard } from '../auth/guards/roles.guard';
 import { Roles } from '../auth/decorators/roles.decorator';
@@ -53,6 +54,27 @@ export class UploadController {
     return this.uploadService.getPresignedUrl(dto);
   }
 
+  @Post('message-presigned-url')
+  @UseGuards(JwtAuthGuard, RolesGuard)
+  @Roles(UserRole.USER, UserRole.AGENT)
+  @ApiBearerAuth()
+  @ApiOperation({ summary: 'Get a pre-signed URL for message attachment upload (images and documents)' })
+  @ApiResponse({
+    status: 200,
+    description: 'Pre-signed URL generated successfully',
+    type: PresignedUrlResponseDto,
+  })
+  @ApiResponse({ status: 400, description: 'Invalid content type' })
+  async getMessagePresignedUrl(
+    @Body() dto: MessagePresignedUrlDto,
+  ): Promise<PresignedUrlResponseDto> {
+    return this.uploadService.getPresignedUrl({
+      filename: dto.filename,
+      contentType: dto.contentType,
+      folder: UploadFolder.MESSAGES,
+    });
+  }
+
   @Post('avatar-presigned-url')
   @UseGuards(JwtAuthGuard, RolesGuard)
   @Roles(UserRole.AGENT)

src/upload/upload.service.ts

@@ -66,6 +66,7 @@ export class UploadService {
       [UploadFolder.DOCUMENTS]: 7 * 24 * 60 * 60,     // 7 days
       [UploadFolder.PROPERTIES]: 30 * 24 * 60 * 60,   // 30 days
       [UploadFolder.VERIFICATION]: 1 * 24 * 60 * 60,  // 1 day
+      [UploadFolder.MESSAGES]: 30 * 24 * 60 * 60,     // 30 days
     };
     return `public, max-age=${cacheDurations[folder] || 86400}`;
   }
@@ -92,6 +93,15 @@ export class UploadService {
         'image/jpeg',
         'image/png',
       ],
+      [UploadFolder.MESSAGES]: [
+        'image/jpeg',
+        'image/png',
+        'image/webp',
+        'image/gif',
+        'application/pdf',
+        'application/msword',
+        'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+      ],
     };
 
     const allowed = allowedTypes[folder];