#!/bin/sh
[ -z "$TERMINAL" ]         && TERMINAL="st -e"
[ -z "$BROWSER"  ]         && BROWSER="xdg-open"
[ -z "$TORRENT"  ]         && TORRENT="qbittorrent"
[ -z "$WEB_GREP" ]         && WEB_GREP="http:|https:|www[.]"
[ -z "$MAGNET_GREP" ]      && MAGNET_GREP="magnet:?"
[ -z "$HISTORY" ]          && HISTORY="${XDG_CACHE_HOME:-$HOME/.cache/}/spmenu_run.hist"
[ -z "$RUNLAUNCHER" ]      && RUNLAUNCHER=spmenu
[ -z "$RUNLAUNCHER_ARGS" ] && RUNLAUNCHER_ARGS="--insert --hist-file $HISTORY $*"
[ -z "$PREFIX" ]           && PREFIX="/usr"

check() {
    [ ! -d "$HOME/.config/spmenu/run" ] && mkdir -p "$HOME/.config/spmenu/run"
    if [ ! -f "$HOME/.config/spmenu/run/.first_run" ]; then
        print_help
        touch "$HOME/.config/spmenu/run/.first_run"
    fi
}

path() {
    printf "%s\n" "$PATH" | \
        tr ':' '\n' | \
        uniq | sed 's#$#/#' | \
        xargs ls -lu --time-style=+%s 2>&1 | \
        awk '/^(-|l)/ { print $6, $7 }' | \
        sort -rn | \
        cut -d' ' -f 2 2>&1
}

print_help() {
cat << EOF | $RUNLAUNCHER $RUNLAUNCHER_ARGS --lines 20 --columns 1 --normal --sgr1 "#FFFF00" --hide-cursor --no-allow-typing --no-color-items --hide-prompt --hide-powerline --hide-input --hide-right-arrow --hide-left-arrow --hide-mode --hide-match-count > /dev/null
Start typing in keywords to list out entries. Press Enter to select an entry. The selected entry will be run through a shell.
To set spmenu options, you pass arguments to 'spmenu_run' directly. See 'spmenu --help' for a list of valid arguments.
To configure spmenu, you may also copy ${DESTDIR}${PREFIX}/share/spmenu/example.Xresources to $HOME/.config/spmenu/spmenurc and edit that.

- Type in '?' to show this help screen at any time.
- If the entry selected starts with 'www', it will instead be treated as a link and spawned in a web browser (\$BROWSER)
- If the entry selected starts with 'magnet', it will instead be treated as a magnet link and spawned in a torrent client (\$TORRENT)

$(printf '\033[0;31m')Note: This may also be displayed if you deleted your spmenu configuration directory.
EOF
}

print_config() {
    [ -f "$HOME/.config/spmenu/run/config" ] && . "$HOME/.config/spmenu/run/config" && return
    mkdir -p "$HOME/.config/spmenu/run"
cat << EOF > "$HOME/.config/spmenu/run/config"
# spmenu_run default configuration file
TERMINAL="\${TERMINAL:-st -e}" # Terminal
BROWSER="\${BROWSER:-xdg-open}" # Web browser
TORRENT="\${TORRENT:-qbittorrent}" # Torrent client
WEB_GREP="http:|https:|www[.]" # Needs to be in grep -E syntax
MAGNET_GREP="magnet:?" # Needs to be in grep -E syntax
HISTORY="\${XDG_CACHE_HOME:-\$HOME/.cache/}/spmenu_run.hist" # History file
RUNLAUNCHER="\${RUNLAUNCHER:-spmenu}" # Run launcher to use
RUNLAUNCHER_ARGS="--insert --hist-file \$HISTORY \$*"
EOF
[ -f "$HOME/.config/spmenu/run/config" ] && . "$HOME/.config/spmenu/run/config" && return
}

parse() {
    dout="$(path | sed "s/\&/\&amp;/g" | $RUNLAUNCHER $RUNLAUNCHER_ARGS)"

    # parse
    [ "$(printf '%c' "$dout")" = "#" ] && EXEC=term
    [ "$(printf "$dout" | awk '{ print $1 }')" = "magnet" ] && EXEC=torrent
    [ "$(printf "$dout" | awk '{ print $1 }')" = "www" ] && EXEC=web
    [ "$(printf "$dout" | awk '{ print $1 }')" = "?" ] && print_help && main && return

    # check for keywords
    printf "%s" "$dout" | grep -qE "$WEB_GREP" && EXEC=web
    printf "%s" "$dout" | grep -qE "$MAGNET_GREP" && EXEC=torrent
}

exec_cmd() {
    [ -z "$EXEC" ] && EXEC=shell
    case "$EXEC" in
        "shell") printf "%s" "$dout" | sed "s/#//g" | ${SHELL:-"/bin/sh"} & ;;
        "term") $TERMINAL -e "$(printf "%s" "$dout" | sed "s/#//g")" & ;;
        "web") $BROWSER "$(printf "$dout" | sed "s/www //g")" & ;;
        "torrent") $TORRENT "$(printf "$dout" | sed "s/magnet //g")" & ;;
    esac
}

main() {
    check "$@"
    print_config "$@"
    parse "$@"
    exec_cmd "$@"
    rm -f "$HOME/.cache/spmenu_run"
}

main "$@"