#!/usr/bin/bash

# Author: Garuda Linux
# Adopted for Snigdha OS

set -euo pipefail  # Enable strict error handling

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\""

declare -A terminals=(
    ["alacritty"]="alacritty -e $cmd || LIBGL_ALWAYS_SOFTWARE=1 alacritty -e $cmd"
    ["konsole"]="konsole -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" "konsole" "kgx" "gnome-terminal" "mate-terminal"
    "xfce4-terminal" "qterminal" "lxterminal" "xterm" "foot"
)

case "$XDG_CURRENT_DESKTOP" in
    KDE) terminal=konsole ;;
    GNOME)
        if command -v "kgx" &> /dev/null; then
            terminal=kgx
        else
            terminal=gnome-terminal
        fi
        ;;
    XFCE) terminal=xfce4-terminal ;;
    LXQt) terminal=qterminal ;;
    MATE) terminal=mate-terminal ;;
    *)
        for i in "${term_order[@]}"; do
            if command -v "$i" &> /dev/null; then
                terminal=$i
                break
            fi
        done
        ;;
esac

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

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