unixorn/tumult.plugin.zsh

#!/usr/bin/env bash

set -o pipefail
if [[ -n "$DEBUG" ]]; then
  set -x
fi

function debug() {
  if [[ -n "$DEBUG" ]]; then
    echo "$@"
  fi
}

function fail() {
  printf '%s\\n' "$1" >&2  ## Send message to stderr. Exclude >&2 if you don't want it that way.
  exit "${2-1}"  ## Return exit code $2 or 1 if unset.
}

if [[ "$(uname -s)" != "Darwin" ]]; then
  fail "Sorry, this script only supports macOS."
fi

CORE_ENGINE='/System/Library/CoreServices/ScreenSaverEngine.app'
FRAME_ENGINE='/System/Library/Frameworks/ScreenSaver.framework/Versions/A/Resources/ScreenSaverEngine.app'
SCREENSAVER_ENGINE="xyzzy$$"

if [[ -x "$FRAME_ENGINE" ]]; then
  SCREENSAVER_ENGINE="$FRAME_ENGINE"
fi
if [[ -x "$CORE_ENGINE" ]]; then
  SCREENSAVER_ENGINE="$CORE_ENGINE"
fi

if [[ -x "$SCREENSAVER_ENGINE" ]]; then
  open "$SCREENSAVER_ENGINE"
else
  # We can't find the screensaver app, resort to Applescript, though it could break in future revs of macOS
  debug "Can't find ScreenSaverEngine.app, resorting to Applescript"
  exec osascript -e 'tell application \"System Events\" to keystroke \"q\" using {command down,control down}'
fi