🚀 Hotfixes: inline PDF preview and instant profile update in UI

backend/src/modules/invoices/invoice.controller.ts

@@ -18,7 +18,9 @@ import {
   UploadedFile,
   UseInterceptors,
   ParseUUIDPipe,
+  Res,
 } from '@nestjs/common';
+import { Response } from 'express';
 import { FileInterceptor } from '@nestjs/platform-express';
 import { InvoicesService } from './invoice.service';
 import { JwtAuthGuard } from '../../common/guards/jwt-auth.guard';
@@ -111,7 +113,25 @@ export class InvoicesController {
   async getFile(
     @CurrentUser() user: any,
     @Param('id', ParseUUIDPipe) id: string,
+    @Res({ passthrough: true }) res: Response,
   ) {
-    return this.invoicesService.getFile(user.tenantId, id);
+    const streamableFile = await this.invoicesService.getFile(user.tenantId, id);
+    
+    // We need to determine the content type to ensure it opens inline in the browser (iframe)
+    // We can fetch the invoice details first to get the extension.
+    const invoice = await this.invoicesService.findOne(user.tenantId, id);
+    let mimeType = 'application/pdf'; // Default fallback
+    if (invoice.original_file_path) {
+      const ext = invoice.original_file_path.split('.').pop()?.toLowerCase();
+      if (ext === 'jpg' || ext === 'jpeg') mimeType = 'image/jpeg';
+      else if (ext === 'png') mimeType = 'image/png';
+    }
+
+    res.set({
+      'Content-Type': mimeType,
+      'Content-Disposition': 'inline', // This forces the browser to display it instead of downloading
+    });
+
+    return streamableFile;
   }
 }