Add readstream

apps/server/src/integrations/storage/drivers/local.driver.ts

@@ -5,6 +5,8 @@ import {
 } from '../interfaces';
 import { join } from 'path';
 import * as fs from 'fs-extra';
+import { Readable } from 'stream';
+import { createReadStream } from 'node:fs';
 
 export class LocalDriver implements StorageDriver {
   private readonly config: LocalStorageConfig;
@@ -43,6 +45,14 @@ export class LocalDriver implements StorageDriver {
     }
   }
 
+  async readStream(filePath: string): Promise<Readable> {
+    try {
+      return createReadStream(this._fullPath(filePath));
+    } catch (err) {
+      throw new Error(`Failed to read file: ${(err as Error).message}`);
+    }
+  }
+
   async exists(filePath: string): Promise<boolean> {
     try {
       return await fs.pathExists(this._fullPath(filePath));

apps/server/src/integrations/storage/drivers/s3.driver.ts

@@ -71,6 +71,21 @@ export class S3Driver implements StorageDriver {
     }
   }
 
+  async readStream(filePath: string): Promise<Readable> {
+    try {
+      const command = new GetObjectCommand({
+        Bucket: this.config.bucket,
+        Key: filePath,
+      });
+
+      const response = await this.s3Client.send(command);
+
+      return response.Body as Readable;
+    } catch (err) {
+      throw new Error(`Failed to read file from S3: ${(err as Error).message}`);
+    }
+  }
+
   async exists(filePath: string): Promise<boolean> {
     try {
       const command = new HeadObjectCommand({

apps/server/src/integrations/storage/interfaces/storage-driver.interface.ts

@@ -1,3 +1,5 @@
+import { Readable } from 'stream';
+
 export interface StorageDriver {
   upload(filePath: string, file: Buffer): Promise<void>;
 
@@ -5,6 +7,9 @@ export interface StorageDriver {
 
   read(filePath: string): Promise<Buffer>;
 
+  readStream(filePath: string): Promise<Readable>;
+
+
   exists(filePath: string): Promise<boolean>;
 
   getUrl(filePath: string): string;

apps/server/src/integrations/storage/storage.service.ts

@@ -1,6 +1,7 @@
 import { Inject, Injectable, Logger } from '@nestjs/common';
 import { STORAGE_DRIVER_TOKEN } from './constants/storage.constants';
 import { StorageDriver } from './interfaces';
+import { Readable } from 'stream';
 
 @Injectable()
 export class StorageService {
@@ -23,6 +24,10 @@ export class StorageService {
     return this.storageDriver.read(filePath);
   }
 
+  async readStream(filePath: string): Promise<Readable> {
+    return this.storageDriver.readStream(filePath);
+  }
+
   async exists(filePath: string): Promise<boolean> {
     return this.storageDriver.exists(filePath);
   }