ipac()
{
    echo checking for $1
    if which $1; then
        echo you have $1
    else
        echo installing $1
        $paman install $1
        echo $1 installed
    fi
}

epip()
{
    pypath=$(python3 -c "import sysconfig; print(sysconfig.get_path('stdlib'))")
    if [ -f ${pypath}/EXTERNALLY-MANAGED ]; then
        pip3 install -e . --break-system-packages
    else
        pip3 install -e .
    fi
}

echo determining platform
if echo OSTYPE | grep darwin; then
    echo you have a mac!
    echo checking for brew
    if which brew;
    then
        echo you have brew
    else
        echo you need brew!
        /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
        echo brew installed!
    fi
    paman=brew
elif which apt; then
    echo you have debian -- great!
    paman="sudo apt"
elif which pkg; then
    echo you have pkg - running bsd
    paman="env ASSUME_ALWAYS_YES=yes pkg"
    for pacname in libxml2 libxslt py39-lxml py39-sqlite3
    do
        ipac $pacname
    done
elif which yum; then
    echo found yum - that works
    paman=yum
else
    echo uh-oh -- you have $OSTYPE
    echo this script only knows about Debian, Fedora, BSD, and OSX
    exit 126
fi

for pacname in python3 git
do
    ipac $pacname
done

if echo $paman | grep brew; then
    python -c 'import magic' || {
        echo you need magic!
        brew install libmagic
        echo magic installed
    }
elif echo $paman | grep apt; then
    echo updating repos
    $paman update
    echo installing other deps
    $paman install --yes build-essential libssl-dev libffi-dev python3-dev python3-setuptools python3-pip </dev/null
fi

echo checking for cantools
if pwd | grep cantools; then
    echo installing right here right now
    epip
else
    python3 -c 'import cantools' || {
        echo "cloning (and hiding) and installing cantools"
        cd ~
        mkdir .ct
        cd .ct
        git clone https://github.com/bubbleboy14/cantools.git
        cd cantools
        epip
        echo cantools installed
    }
fi

echo installed cantools and all dependencies. happy coding.
echo goodbye