feat: add dynamic S3 presigned URL redirection to preview_document view

crm/views/seller_views.py

@@ -217,6 +217,32 @@ from django.views.decorators.clickjacking import xframe_options_exempt
 @xframe_options_exempt
 def preview_document(request):
     filename = request.query_params.get('file', 'document.pdf')
+    
+    # Dynamic S3 Presigned Redirect if AWS credentials are set
+    import os
+    aws_access = os.environ.get('AWS_ACCESS_KEY_ID') or os.environ.get('AWS_ACCESS_KEY')
+    aws_secret = os.environ.get('AWS_SECRET_ACCESS_KEY') or os.environ.get('AWS_SECRET_KEY')
+    bucket_name = os.environ.get('AWS_STORAGE_BUCKET_NAME') or os.environ.get('AWS_BUCKET_NAME') or 'digihox-kyc-bucket'
+    
+    if aws_access and aws_secret:
+        try:
+            import boto3
+            from django.shortcuts import redirect
+            s3_client = boto3.client(
+                's3',
+                aws_access_key_id=aws_access,
+                aws_secret_access_key=aws_secret,
+                region_name=os.environ.get('AWS_REGION', 'ap-south-2')
+            )
+            presigned_url = s3_client.generate_presigned_url(
+                'get_object',
+                Params={'Bucket': bucket_name, 'Key': filename},
+                ExpiresIn=3600
+            )
+            return redirect(presigned_url)
+        except Exception as e:
+            print("S3 redirect helper failed, falling back to mock files:", e)
+
     if filename.endswith('.pdf'):
         pdf_data = (
             b"%PDF-1.4\n"