#!/bin/sh

_printhelp ()
{
    cat <<EOF
Usage: ${1##*/} [OPTIONS] PACKAGES

Fetch PKGBUILDs from source tree (using ABS tree by default).

  -f:  Overwrite folder if it exists.
  -h:  Display this help.
  -y:  Use 'yaourt' to fetch data.

Noteworthy parameters:
  \$(pacman-official)
  \$(pacman -Qmq)
  \$(pacman -Qq)
EOF
}

DL_AGENT=0
CP_AGENT="/bin/cp -rnv"

while getopts ":hfy" opt; do
    case $opt in
        h)
            _printhelp "$0"
            exit 1
            ;;
        f)
            CP_AGENT="/bin/cp -rfv"
            ;;
        y)
            DL_AGENT=1
            ;;
        ?)
            _printhelp "$0"
            exit 1
            ;;
        :)
            echo "Missing argument."
            _printhelp "$0"
            exit 1
            ;;
    esac
done

shift $(($OPTIND - 1))

if [ $# -eq 0 ]; then
    echo "Missing argument."
    _printhelp "$0"
    exit 1
fi

if [ $DL_AGENT -eq 0 ]; then
    if [ ! -f /usr/bin/abs ]; then
        echo "ABS needs to be installed."
        exit
    fi

    [ ! -d "/var/abs" ] && sudo abs
    for i; do
        eval "$CP_AGENT" /var/abs/*/$i .
    done
    exit 0
fi

if [ $DL_AGENT -eq 1 ]; then
    if [ ! -f /usr/bin/yaourt ]; then
        echo "Yaourt needs to be installed."
        exit
    fi
    yaourt -G "$@"
    exit 0
fi