focus-or-launch.sh

#!/bin/bash
# Script that either brings the app to focus or launches it.

if [[ $# -eq 0 ]] ; then
  echo 'Please provide an app name'
  exit 0
fi

APP=$@
APP_PID=$(xdotool search --class $APP | tail -n1)
APP_PID_FOCUSED=$(xdotool getactivewindow)

if [ -z "$APP_PID" ]; then
  # APP is not running

  case "$APP" in
    "brave")
      notify-send "Starting $APP"
      /usr/bin/brave &
      ;;
    "discord")
      notify-send "Starting $APP"
      /usr/bin/discord &
      ;;
    "kitty")
      notify-send "Starting $APP"
      /usr/bin/kitty &
      ;;
    "slack")
      notify-send "Starting $APP"
      /usr/bin/slack &
      ;;
    "teams")
      notify-send "Starting $APP"
      /var/lib/snapd/snap/bin/teams &
      ;;
    "eclipse")
      notify-send "Starting $APP"
      /usr/bin/eclipse &
      ;;
    *)
      "$APP not defined";
      exit 0;
      ;;
  esac

else
  # APP has already launched

  if [[ "$APP_PID_FOCUSED" == "$APP_PID" ]]; then
    # APP already has focus, try to find a second window
    APP_PID=$(xdotool search --class $APP | tail -2 | head -1)
  fi

  # Launching APP
  xdotool windowactivate --sync $APP_PID

fi