{ config, pkgs, ... }:

let
  smartd_notifier = pkgs.writeScript "smartd-notify.sh" ''
    #!${pkgs.bash}/bin/bash
    
    # 1. Send Technical Email to Admin
    ADMIN_EMAIL="${config.email.adminAddress}"
    SUBJECT="Numbus Server Alert: $SMARTD_FAILTYPE on $SMARTD_DEVICE"
    
    TECH_BODY="
    SMARTD Alert Details:
    Device: $SMARTD_DEVICE
    Type: $SMARTD_DEVICETYPE
    Failure Type: $SMARTD_FAILTYPE
    Message: $SMARTD_MESSAGE
    
    Full Message:
    $SMARTD_FULLMESSAGE
    "
    printf "Subject: [ADMIN] $SUBJECT\n\n$TECH_BODY" | /run/wrappers/bin/sendmail -t "$ADMIN_EMAIL"

    # 2. Send Friendly Email to Owner
    OWNER_NAME=$(cat /etc/numbus-server/owner 2>/dev/null || echo "User")
    USER_EMAIL="${config.email.toAddress}"
    
    FRIENDLY_BODY="Hello $OWNER_NAME,

    We detected a potential hardware issue on your server ($SMARTD_DEVICE).
    Don't panic! The administrator has been notified and received the technical details.
    They will contact you if any action is required on your part.

    Your Numbus Server"
    
    printf "Subject: [Alert] Hardware check on your server\n\n$FRIENDLY_BODY" | /run/wrappers/bin/sendmail -t "$USER_EMAIL"
  '';
in
{
### --> SMART disk heath
  services.smartd = {
    enable = true;
    defaults.autodetected = "-a -o on -S on -s (S/../.././00|L/../../6/01) -n standby,q -M exec ${smartd_notifier}";
    notifications = {
      wall = {
        enable = true;
      };
      mail = {
        enable = true;
        sender = config.email.fromAddress;
        recipient = "${config.email.toAddress},${config.email.adminAddress}";
      };
    };
  };
### SMART disk heath <--
}