tape/send_load_media_email: move to server/email_notifications

and reuse 'send_job_status_mail' there so that we get consistent
formatted mails from pbs (e.g. html part and author)

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

src/server/email_notifications.rs

@@ -448,6 +448,30 @@ pub fn send_tape_backup_status(
     Ok(())
 }
 
+/// Send email to a person to request a manual media change
+pub fn send_load_media_email(
+    drive: &str,
+    label_text: &str,
+    to: &str,
+    reason: Option<String>,
+) -> Result<(), Error> {
+
+    let subject = format!("Load Media '{}' request for drive '{}'", label_text, drive);
+
+    let mut text = String::new();
+
+    if let Some(reason) = reason {
+        text.push_str(&format!("The drive has the wrong or no tape inserted. Error:\n{}\n\n", reason));
+    }
+
+    text.push_str("Please insert the requested media into the backup drive.\n\n");
+
+    text.push_str(&format!("Drive: {}\n", drive));
+    text.push_str(&format!("Media: {}\n", label_text));
+
+    send_job_status_mail(to, &subject, &text)
+}
+
 fn get_server_url() -> (String, usize) {
 
     // user will surely request that they can change this