#! /usr/bin/env bash

export __BASH_HOOKS_TIMEOUT__=60

export __BASH_HOOKS_COMMAND__=
export __BASH_HOOKS_TIME__=

timestamp()
{
  date "+%s"
}

preexec()
{
  export __BASH_HOOKS_COMMAND__="$1"
  export __BASH_HOOKS_TIME__=$(timestamp)

}

precmd()
{
  if [ -n "$__BASH_HOOKS_COMMAND__" ]
  then
    ts=$(timestamp)
    diff=$(($ts - $__BASH_HOOKS_TIME__))
    __bash_hooks_command_finished "$__BASH_HOOKS_COMMAND__" $diff
    export __BASH_HOOKS_COMMAND__=
    export __BASH_HOOKS_TIME__=
  fi
}

displaytime()
{
  local T=$1
  local D=$((T/60/60/24))
  local H=$((T/60/60%24))
  local M=$((T/60%60))
  local S=$((T%60))
  [[ $D > 0 ]] && printf '%d days ' $D
  [[ $H > 0 ]] && printf '%d hours ' $H
  [[ $M > 0 ]] && printf '%d minutes ' $M
  [[ $D > 0 || $H > 0 || $M > 0 ]] && printf 'and '
  printf '%d seconds\n' $S
}

__bash_hooks_command_finished()
{
  if [ "$2" -ge "$__BASH_HOOKS_TIMEOUT__" ]
  then
    send_notif=1
    while read exp
    do
      if [ $(echo "${1}" | grep -c "${exp}") -ge 1 ]
      then
        send_notif=0
      fi
    done < ~/.nma_exclude

    human=$(displaytime "$2")
    text="Command \"$1\" finished in $human ($2 seconds)"
    if [ ${send_notif} -eq 1 ]
    then
      text="${text} (notified)"
    fi
    echo "$text"

    if [ ${send_notif} -eq 1 ]
    then
      (nma $(hostname -f) "$1" "$text" >/dev/null 2>/dev/null &)
    fi
  fi
}