#!/usr/bin/env bash
# Generate systemd service file

set -e

FILE=/etc/systemd/system/buttond.service

button=$(realpath button.py)
if [[ ! -f $button ]]; then
    echo button.py not found
    exit 1
fi

vpython=$(realpath venv/)/bin/python
if [[ ! -x $vpython ]]; then
    echo venv not found
    exit 1
fi

cat > "$FILE" << EOF
[Unit]
Description=Button Service UG
StartLimitIntervalSec=60s
StartLimitBurst=10

[Service]
Type=exec
ExecStart=$vpython -u $button
User=root
WorkingDirectory=$(dirname "$button")
Restart=on-failure
RestartSec=3s
NoNewPrivileges=yes
PrivateTmp=yes
ProtectSystem=full

[Install]
WantedBy=multi-user.target
EOF

service=$(basename "$FILE")
systemctl daemon-reload
systemctl enable --now "$service"
systemctl --no-pager status "$service"