#!/bin/sh
#
# Runs poweroff after printing a message to the log, setting the LEDs to red
# to indicate a failure, and waiting for logs to upload.
#

if [ "$#" = 0 ]; then
  echo "Usage: $0 <message>" >&2
  exit 1
fi

exec >&2

echo "<1>poweroff:" "$@" >/dev/kmsg
if [ -e /config/NO-POWEROFF ]; then
  echo "<1>poweroff: disabled by /config/NO-POWEROFF." >/dev/kmsg
  exit 0
fi

# This runs just in case we encounter trouble during the next steps.
# This background task is double-nested so that it doesn't count toward
# the 'wait' command below.
(
  (
    sleep 30
    echo "Timed out; powering off immediately."
    poweroff
  ) &
)

echo "Waiting for LEDs and logs to sync."
(
  : >/tmp/gpio/ledcontrol/halted
  leds-and-wait 1  # red
  echo "LEDs set."
) &
(
  upload-logs-and-wait
  echo "Logs uploaded."
) &
wait

echo "Powering off."
poweroff