added member name into email subject and pdf name (#63)

We want member's name in email subject and pdf name. It will help with
searching for correct email when processing multiple applications.
Treasurer also needs to upload pdf into drive with in `name_surname.pdf`
format, so we can name it correct way at the server and save treasurer
some time.

orca/src/processing/mod.rs

@@ -151,16 +151,31 @@ async fn process(
                     .renderer(&templates::NEW_APPLICATION_NOTICE, "default");
                 let message_html = config.templates.render(&renderer)?;
 
+                // We need member details because we want to customize email subject/pdf name
+                let member_details = query::query_registration(reg_id).fetch_one(db_pool).await?;
+
+                let email_subject = format!(
+                    "New Application - {} {}",
+                    member_details.first_name.as_deref().unwrap_or(""),
+                    member_details.last_name.as_deref().unwrap_or("")
+                );
+
+                let pdf_name = format!(
+                    "{}_{}.pdf",
+                    member_details.first_name.as_deref().unwrap_or(""),
+                    member_details.last_name.as_deref().unwrap_or("")
+                );
+
                 let message = Message::builder()
                     .from(sender_info.clone())
                     .reply_to(sender_info)
                     .to(format!("Notifications <{}>", notification_email).parse()?)
-                    .subject("New Application")
+                    .subject(email_subject)
                     .multipart(
                         MultiPart::related()
                             .singlepart(SinglePart::html(message_html))
                             .singlepart(
-                                Attachment::new(String::from("application.pdf"))
+                                Attachment::new(String::from(pdf_name))
                                     // This should never fail
                                     // we generate the pdf ourselves so we know it will be valid
                                     .body(pdf_data, "application/pdf".parse().unwrap()),