alert

#!/bin/bash
__track_usage "$(basename "$0")"

# Usage:
#    alert -t "Title" -b "Body" -d 3 -s
#  Where:
#     -t = Alert title
#     -b = Alert body
#     -d = Delay in seconds
#     -D = Delay, using the format of timeDiff / date -v adjustment
#     -s = (Optional) Say the alert in addition to displaying a notification

# SETINGS
SPEAK=0
DELAY=""
TITLE=""
BODY=""

OPTIND=1
while getopts "st:xb:xd:xD:x" opt; do
    case "$opt" in
    s)  SPEAK=1
        ;;
    t)  TITLE="$OPTARG"
        ;;
    d)  DELAY="$OPTARG"
        ;;
    D)  DELAY=$(timeDiff "$OPTARG")
        ;;
    b)  BODY="$OPTARG"
        ;;
    esac
done
shift $((OPTIND-1))

[ "$1" = "--" ] && shift

if [ -n "$@" ]; then
  TITLE=" "
  BODY="$@"
  if [ -z "$DELAY" ]; then
    read -p "Delay (in seconds)?" DELAY
  fi

fi

if [ -z "$TITLE" ]; then
  echo "Message title not provided: -t argument is required."
  exit 1
fi

if [ -z "$BODY" ]; then
  echo "Message body not provided: -b argument is required."
  exit 1
fi

if [ -z "$DELAY" ]; then
  echo "Time delay not provided: -d argument is required."
  exit 1
fi

isNumber() { [ "$1" -eq "$1" ] 2>/dev/null; }

if ! isNumber "$DELAY"; then
  echo "Provided delay, "$DELAY" is not a valid number";
  exit 1
fi

speakNotification() {
  local title="$1"
  local body="$2"
  local content="Alert! $title. $body."

  say "$content"
}

displayNotification() {
  local title="$1"
  local body="$2"
  local script='display notification "'$body'" with title "'$title'"'

  osascript -e "$script"
}

doNotification() {
  displayNotification "$TITLE" "$BODY"

  if (($SPEAK == 1)); then
    speakNotification "$TITLE" "$BODY"
  fi
}

echo "In $DELAY seconds, will send the alert:"
echo "$TITLE :"
echo "$BODY"

{ sleep "$DELAY"; doNotification; } &
disown