#!/bin/sh
# vim: set ts=4 sw=4 et:

command -v fzf >/dev/null || sudo xbps-install -S fzf

[ -z "$*" ] && echo "xif: empty search term" && exit 1

filter='/^.[i*]. /d'
filter1='s/^...\? //'
filter2='s/-[^- ]* / /'

XRS="xbps-query -Rs"
command -v xrs >/dev/null && XRS="xrs"
XI="xbps-install"
command -v xi >/dev/null && XI="xi"

which_sudo() {
    if [ "$(id -u)" = "0" ]; then
        return
    elif command -v sudo >/dev/null && sudo -l | grep -q -e ' ALL$' -e xbps-install; then
        echo sudo
    elif command -v doas >/dev/null && [ -f /etc/doas.conf ]; then
        echo doas
    else
        echo su
    fi
}

install() {
    echo "xif: $SUDO $XI $@"
    echo
    $SUDO $XI $@
}

pkgs() {
    echo $@ | tr ' ' '\n' | xargs -i $XRS {} | uniq |\
        sed "$filter;$filter1;$filter2" | fzf --layout=reverse -m |\
        cut -d' ' -f1 | tr '\n' ' ' | sed "s/ $//"
}

PKGS="$(pkgs $@)"
[ -z "$PKGS" ] && exit 130

SUDO=$(which_sudo)
install -S $PKGS

status=$?
if [ $status -eq 16 ]; then
    install -u xbps &&
    install -S $PKGS
else
    exit $status
fi