def upload_files_to_s3_with_key(
            self, file_path, file_name, is_private, parent_doctype, parent_name
    ):
        """
        Uploads a new file to S3.
        Strips the file extension to set the content_type in metadata.
        """
        mime_type = magic.from_file(file_path, mime=True)
        key = self.key_generator(file_name, parent_doctype, parent_name)
        content_type = mime_type
        try:
            if is_private:
                self.S3_CLIENT.upload_file(
                    file_path, self.BUCKET, key,
                    ExtraArgs={
                        "ContentType": content_type,
                        "Metadata": {
                            "ContentType": content_type,
                            "file_name": file_name
                        }
                    }
                )
            else:
                self.S3_CLIENT.upload_file(
                    file_path, self.BUCKET, key,
                    ExtraArgs={
                        "ContentType": content_type,
                        "ACL": 'public-read',
                        "Metadata": {
                            "ContentType": content_type,

                        }
                    }
                )

        except boto3.exceptions.S3UploadFailedError:
            frappe.throw(frappe._("File Upload Failed. Please try again."))
        return key