Add dashboard Bluetooth controls

2026-07-31 23:47:20 +02:00
parent af9de7dbdf
commit 3801a91acf
14 changed files with 301 additions and 6 deletions
@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+if [[ ${EUID} -ne 0 ]]; then
+  echo "The Bluetooth control helper must run as root." >&2
+  exit 1
+fi
+
+BLUETOOTHCTL=/usr/bin/bluetoothctl
+SYSTEMCTL=/usr/bin/systemctl
+BRIDGE_SERVICE=pi-car-companion-bluetooth.service
+
+print_status() {
+  local details powered discoverable pairable message
+  details="$(LC_ALL=C "${BLUETOOTHCTL}" show 2>/dev/null || true)"
+  if ! grep -q '^Controller ' <<<"${details}"; then
+    printf '%s\n' '{"supported":false,"powered":false,"discoverable":false,"pairable":false,"message":"No Bluetooth adapter was found."}'
+    return
+  fi
+  powered="$(sed -n 's/^[[:space:]]*Powered: //p' <<<"${details}" | head -n 1)"
+  discoverable="$(sed -n 's/^[[:space:]]*Discoverable: //p' <<<"${details}" | head -n 1)"
+  pairable="$(sed -n 's/^[[:space:]]*Pairable: //p' <<<"${details}" | head -n 1)"
+  [[ "${powered}" == "yes" ]] && powered=true || powered=false
+  [[ "${discoverable}" == "yes" ]] && discoverable=true || discoverable=false
+  [[ "${pairable}" == "yes" ]] && pairable=true || pairable=false
+  if [[ "${discoverable}" == "true" ]]; then
+    message="The Pi is visible to nearby phones for three minutes."
+  elif [[ "${powered}" == "true" ]]; then
+    message="Bluetooth is on and the companion bridge is available."
+  else
+    message="Bluetooth is off."
+  fi
+  printf '{"supported":true,"powered":%s,"discoverable":%s,"pairable":%s,"message":"%s"}\n' \
+    "${powered}" "${discoverable}" "${pairable}" "${message}"
+}
+
+power_on() {
+  "${SYSTEMCTL}" start bluetooth.service
+  /usr/sbin/rfkill unblock bluetooth
+  "${BLUETOOTHCTL}" power on >/dev/null
+  "${SYSTEMCTL}" enable --now "${BRIDGE_SERVICE}" >/dev/null
+}
+
+case "${1:-}" in
+  status)
+    ;;
+  on)
+    power_on
+    ;;
+  off)
+    "${SYSTEMCTL}" disable --now "${BRIDGE_SERVICE}" >/dev/null
+    "${BLUETOOTHCTL}" discoverable off >/dev/null 2>&1 || true
+    "${BLUETOOTHCTL}" pairable off >/dev/null 2>&1 || true
+    "${BLUETOOTHCTL}" power off >/dev/null
+    /usr/sbin/rfkill block bluetooth
+    ;;
+  discoverable)
+    power_on
+    "${BLUETOOTHCTL}" discoverable-timeout 180 >/dev/null
+    "${BLUETOOTHCTL}" pairable-timeout 180 >/dev/null
+    "${BLUETOOTHCTL}" pairable on >/dev/null
+    "${BLUETOOTHCTL}" discoverable on >/dev/null
+    ;;
+  *)
+    echo "Usage: pi-car-companion-bluetooth-control status|on|off|discoverable" >&2
+    exit 2
+    ;;
+esac
+
+print_status