#!/usr/bin/bash
set -e

LAUNCH_TERMINAL_SHELL=bash

usage() {
	echo "Usage: ${0##*/} [cmd]"
	echo '    -s [shell]         Change shell to [shell]'
	echo '    -h                 This help'
	exit 1
}

opts='s:h'

while getopts "${opts}" arg; do
	case "${arg}" in
	s) LAUNCH_TERMINAL_SHELL="$OPTARG" ;;
	h | ?) usage 0 ;;
	*)
		echo "invalid argument '${arg}'"
		usage 1
		;;
	esac
done

shift $(($OPTIND - 1))

initfile="$(mktemp)"
codefile="$initfile"
echo "#!/usr/bin/env bash" >"$initfile"
if [ "$LAUNCH_TERMINAL_SHELL" != "bash" ]; then
	codefile="$(mktemp)"
	echo "$LAUNCH_TERMINAL_SHELL $codefile" >>"$initfile"
fi
echo "$1" >>"$codefile"
chmod +x "$initfile"
cmd="\"$initfile\""

terminal=""
declare -A terminals=(["alacritty"]="alacritty -e $cmd || LIBGL_ALWAYS_SOFTWARE=1 alacritty -e $cmd" ["kitty"]="kitty -e $cmd" ["kgx"]="kgx -- $cmd" ["gnome-terminal"]="gnome-terminal --wait -- $cmd" ["xfce4-terminal"]="xfce4-terminal --disable-server --command '$cmd'" ["qterminal"]="qterminal -e $cmd" ["lxterminal"]="lxterminal -e $cmd" ["mate-terminal"]="mate-terminal --disable-factory -e $cmd" ["xterm"]="xterm -e $cmd" ["foot"]="foot -T launch-terminal -e $cmd")
declare -a term_order=("alacritty" "kitty" "kgx" "gnome-terminal" "mate-terminal" "xfce4-terminal" "qterminal" "lxterminal" "xterm" "foot")

case "$XDG_CURRENT_DESKTOP" in
KDE)
	terminal=kitty
	;;
GNOME)
	if command -v "kgx" &>/dev/null; then
		terminal=kgx
	else
		terminal=gnome-terminal
	fi
	;;
XFCE)
	terminal=xfce4-terminal
	;;
LXQt)
	terminal=qterminal
	;;
MATE)
	terminal=mate-terminal
	;;
esac

if [ -z "$terminal" ] || ! command -v "$terminal" &>/dev/null; then
	for i in ${term_order[@]}; do
		if command -v "$i" &>/dev/null; then
			terminal="$i"
			break
		fi
	done
fi

if [ -z "$terminal" ]; then
	notify-send -t 15000 --app-name=Garuda\ Linux "No terminal installed" "No supported terminal emulator is installed. Please install a terminal emulator like Alacritty."
	exit 1
fi

# Special kgx, thanks gnome
if [ "$terminal" == "kgx" ]; then
	sed -i '2i sleep 0.1' $initfile
	echo 'kill -SIGINT $PPID' >>$initfile
fi

eval "${terminals[${terminal}]}" || {
	exitcode=$?
}

rm "$initfile"
if [ "$codefile" != "$initfile" ]; then
	rm "$codefile"
fi

if [ ! -z "$exitcode" ] && [ "$exitcode" != 130 ]; then
	exit 2
fi