[Unit]
Description=Register Prometheus Metrics for %I
Wants=prometheus.service
After=prometheus.service

[Service]
Type=oneshot
RemainAfterExit=true
SyslogIdentifier=%N
Environment=SERVICE_HOST=%i
Environment=PROMETHEUS_CONF=%E/coreos-home-server/prometheus/service/%p.yml.template
ExecStart=/bin/sh -c "envsubst '$SERVICE_HOST' < ${PROMETHEUS_CONF} > /tmp/%i.yml"
ExecStartPost=/bin/sh -c 'podman cp --archive=false /tmp/%i.yml prometheus:/etc/prometheus/service.d/%i.yml && rm -f /tmp/%i.yml'
ExecStartPost=/bin/podman exec prometheus sh -c 'kill -HUP $(pidof prometheus)'
ExecStop=/bin/podman exec --user=root prometheus rm -f /etc/prometheus/service.d/%i.yml
ExecStopPost=/bin/podman exec prometheus sh -c 'kill -HUP $(pidof prometheus)'

[Install]
WantedBy=multi-user.target