Activate or start program single instance

#!/bin/sh
# Starts single instance of program in command line
# Usefully assigned to a system hotkey shortcut
# Usage "wm application"
# System calls may need full path

case "$1" in
    ferdium)
        run="/usr/bin/flatpak run --branch=stable --arch=x86_64 --command=ferdium --file-forwarding org.ferdium.Ferdium @@u %U @@"
        ;;
    # Add more cases here for other programs
    *)
        # Default action if no match is found
        run=$1
        ;;
esac

sh -c "wmctrl -x -a $1 || $run"