#!/bin/sh

install_prerequisite_software ()
{
    if [[ -n "$(which git)" ]]
    then
        echo "Git is already installed."
    elif [[ -n "$(which apk)" ]]
    then
        apk update
        apk add git
    elif [[ -n "$(which apt-get)" ]]
    then
        apt-get update
        apt-get install git
    elif [[ -n "$(which dnf)" ]]
    then
        dnf install git
    elif [[ -n "$(which yum)" ]]
    then
        yum install git
    elif [[ -n "$(which pacman)" ]]
    then
        pacman -S git
    else
        echo "Could not install Git: could not identify package manager."
        exit 1
    fi
}

clone_repository ()
{
    cd ${LIB_DIR:-/lib}
    git clone https://git.joeac.net/joeac/joeac.net.git
    cd joeac.net
    chmod +x uninstall.sh update_and_restart.sh restart.sh
}

add_cron_services ()
{
    echo <<- EOF > ${CRONTABS_DIR:-/etc/cron.d}/joeacnet
@reboot ${LIB_DIR:-/lib}/joeac.net/restart.sh
10 * * * * ${LIB_DIR:-/lib}/joeac.net/update_and_restart.sh
EOF
}

set -eux
install_prerequisite_software
clone_repository
add_cron_services
./restart.sh