timeout_lock

timeout_lock.sh

#/bin/env bash

if ! which say >/dev/null; then
  echo "say command not found"
  echo "you can install it using:"
  echo "  brew install espeak"
  exit 1
fi

if [[ $# < 1 ]];then
  echo "Usage: timeout_lock <timeout_in_seconds> [ <warning_period_in_seconds>]"
  exit 2
fi

timeout=${1}
warning_period=${2:-300}

cur_time() {
   date "+%s"
}

start_time=$(cur_time)
timeout_time=$[$(cur_time) + timeout]
sleep_time=10

while (( $(cur_time) < ${timeout_time} ));do
   remaining=$[timeout_time - $(cur_time)]
   echo "remaining: ${remaining}"

   echo ${warning_period}
locale
   if (( ${remaining} < ${warning_period} )); then
      echo "${remaining} seconds left" | say
   fi
   sleep $((remaining < sleep_time ? remaining : sleep_time));
done

echo "locking"
pmset displaysleepnow