#!/bin/bash

if [ "$EUID" -ne 0 ]; then
  echo "Please run as root"
  exit
fi

echo "Please enter the desired name for the service (e.g., backup). Can only contain [a-z, A-Z, 0-9]: "
read SERVICE_NAME

echo "Please enter the path to your backup script (e.g., /home/user/service/backup.sh): "
read BACKUP_SCRIPT_PATH

echo "Please enter the path to the log file for the script (e.g., /home/sem/service/backup.log): "
read LOG_FILE_PATH

echo "Please enter the working directory for the backup service (e.g., /home/user/service): "
read WORKING_DIRECTORY

echo "Please enter the desired OnCalendar time for the timer (e.g.'Mon *-*-* 02:00:00'): "
read ONCALENDAR_TIME

echo "Please enter a description for the interval of the timer (e.g., 'Monday at 02:00'): "
read TIMER_DESCRIPTION

SERVICE_FILE="/etc/systemd/system/backup-${SERVICE_NAME}.service"
TIMER_FILE="/etc/systemd/system/backup-${SERVICE_NAME}.timer"

cat > $SERVICE_FILE <<EOL
[Unit]
Description=Backup $SERVICE_NAME to the backups VM

[Service]
Type=oneshot
ExecStart=$BACKUP_SCRIPT_PATH > $LOG_FILE_PATH
User=sem
WorkingDirectory=$WORKING_DIRECTORY
EOL

echo "Created service file at $SERVICE_FILE"

cat > $TIMER_FILE <<EOL
[Unit]
Description=Backup $SERVICE_NAME every $TIMER_DESCRIPTION

[Timer]
OnCalendar=$ONCALENDAR_TIME
Persistent=true

[Install]
WantedBy=timers.target
EOL

echo "Created timer file at $TIMER_FILE"

systemctl daemon-reload
systemctl enable backup-${SERVICE_NAME}.timer
systemctl start backup-${SERVICE_NAME}.timer

systemctl list-timers