Add tabbed settings and system shell

scripts/pi-car-companion-power

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+if [[ ${EUID} -ne 0 ]]; then
+  echo "The power helper must run as root." >&2
+  exit 1
+fi
+
+case "${1:-}" in
+  reboot|poweroff)
+    action="$1"
+    ;;
+  *)
+    echo "Usage: pi-car-companion-power reboot|poweroff" >&2
+    exit 2
+    ;;
+esac
+
+/usr/bin/systemd-run \
+  --quiet \
+  --collect \
+  --on-active=3s \
+  --unit="pi-car-companion-${action}" \
+  /usr/bin/systemctl "${action}"

scripts/pi-car-companion-update

@@ -18,6 +18,14 @@ RELEASE_TMP=""
 FROM_REVISION=""
 TO_REVISION=""
 PHASE="checking for updates"
+CHECK_ONLY=false
+
+if [[ "${1:-}" == "--check-only" ]]; then
+  CHECK_ONLY=true
+elif [[ $# -gt 0 ]]; then
+  echo "Usage: pi-car-companion-update [--check-only]" >&2
+  exit 2
+fi
 
 if [[ ${EUID} -ne 0 ]]; then
   echo "The update helper must run as root." >&2
@@ -57,8 +65,10 @@ install_integration_files() {
   local source_release="$1"
   install -m 0755 "${source_release}/scripts/pi-car-companion-update" /usr/local/sbin/pi-car-companion-update
   install -m 0755 "${source_release}/scripts/pi-car-companion-network-setup" /usr/local/sbin/pi-car-companion-network-setup
+  install -m 0755 "${source_release}/scripts/pi-car-companion-power" /usr/local/sbin/pi-car-companion-power
   install -m 0644 "${source_release}/systemd/pi-car-companion.service" /etc/systemd/system/pi-car-companion.service
   install -m 0644 "${source_release}/systemd/pi-car-companion-update.service" /etc/systemd/system/pi-car-companion-update.service
+  install -m 0644 "${source_release}/systemd/pi-car-companion-update-check.service" /etc/systemd/system/pi-car-companion-update-check.service
   install -m 0644 "${source_release}/systemd/pi-car-companion-network.service" /etc/systemd/system/pi-car-companion-network.service
   install -m 0644 "${source_release}/systemd/pi-car-companion-network-configure.service" /etc/systemd/system/pi-car-companion-network-configure.service
   install -m 0644 "${source_release}/systemd/pi-car-companion-network-observer.service" /etc/systemd/system/pi-car-companion-network-observer.service
@@ -115,9 +125,11 @@ fi
 TO_REVISION="$(git -C "${REPOSITORY}" rev-parse "origin/${branch}")"
 
 if [[ -n "${FROM_REVISION}" && "${FROM_REVISION}" == "${TO_REVISION}" ]]; then
-  install_integration_files "${CURRENT}"
-  visudo -cf /etc/sudoers.d/pi-car-companion >/dev/null
-  systemctl daemon-reload
+  if [[ "${CHECK_ONLY}" != "true" ]]; then
+    install_integration_files "${CURRENT}"
+    visudo -cf /etc/sudoers.d/pi-car-companion >/dev/null
+    systemctl daemon-reload
+  fi
   write_status "current" "Pi Car Companion is already up to date."
   exit 0
 fi
@@ -127,6 +139,11 @@ if [[ -n "${FROM_REVISION}" ]] && ! git -C "${REPOSITORY}" merge-base --is-ances
   exit 1
 fi
 
+if [[ "${CHECK_ONLY}" == "true" ]]; then
+  write_status "available" "A newer Pi Car Companion release is available to install."
+  exit 0
+fi
+
 PHASE="building the new release"
 write_status "building" "Downloading dependencies and verifying the new release."
 install -d -m 0755 "${STAGING_ROOT}" "${RELEASES}"