#!/bin/sh

log()
{
  echo "$0:" "$@" >&2
}

log "starting."

while :; do
  log "waiting for reset button."
  # gpio-mailbox creates reset_button_msecs when ready.
  wait-until-created /tmp/gpio/reset_button_msecs
  log "reset button pressed!  waiting for button release."
  if reset-button-held 2000; then
    log "reset button activated."
    leds 0 1 0 1 0 0  # blinky red light to indicate initial reset mode
    if reset-button-held 10000; then
      log "factory reset requested."
      leds 0 15 0 15 0 15  # noisy leds to indicate full on factory reset
      zap --i-really-mean-it --erase-backups
      log "factory reset: rebooting in 10 seconds..."
      sleep 10
    else
      log "reset button: rebooting..."
    fi
    leds 0
    reboot
  fi
done