CD_DNS_SERVERS=(
'9.9.9.9'
)
CD_REPOSITORY='rwx.work/cd'

CD_DNS_FILE='/etc/resolv.conf'
case "${CD_OS_NAME}" in
    'debian')
        case "${CD_OS_VERSION}" in
            'bookworm')
                echo 'bookworm!'
            ;;
            *)
                echo 'CD_OS_VERSION'
                exit 2
            ;;
        esac
    ;;
    *)
        echo 'CD_OS_NAME'
        exit 1
    ;;
esac

function split {
    [ "${1}" ] && echo "
${1}
"
}

split " 1/14 set name servers"
for server in "${CD_DNS_SERVERS[@]}" ; do
    echo "nameserver ${server}" \
    >> "${CD_DNS_FILE}" \
    || exit
done

split " 2/14 configure package manager"
echo -n "\
Acquire::Check-Valid-Until True;
APT::Get::Show-Versions True;
APT::Install-Recommends False;
APT::Install-Suggests False;
Dir::Etc::SourceParts '';
" > '/etc/apt/apt.conf.d/apt.conf' \
|| exit
split " 3/14 configure package repositories"
echo -n "\
deb https://deb.debian.org/debian bookworm main
deb https://deb.debian.org/debian bookworm-backports main
deb https://deb.debian.org/debian bookworm-updates main
deb https://deb.debian.org/debian-security bookworm-security main
" > '/etc/apt/sources.list' \
|| exit

split " 4/14 disable package verification"
echo -n "\
Acquire::https::Verify-Peer False;
" > '/etc/apt/apt.conf.d/https' \
|| exit
split " 5/14 update package catalog"
apt-get update \
|| exit
split " 6/14 install CA certificates package"
apt-get install --yes 'ca-certificates' \
|| exit
split " 7/14 enable package verification"
rm '/etc/apt/apt.conf.d/https' \
|| exit

split " 8/14 update package catalog"
apt-get update \
|| exit
split " 9/14 upgrade packages"
apt-get upgrade --yes \
|| exit

split "10/14 install Git"
apt-get install --yes 'git' \
|| exit

DIRECTORY="$(mktemp --directory)" \
|| exit
split "11/14 clone Continuous Delivery"
git clone \
"${GITHUB_SERVER_URL}/${CD_REPOSITORY}" \
"${DIRECTORY}" \
|| exit

split "12/14 install Python"
apt-get install --yes 'python3' \
|| exit
split "13/14 clean package cache"
apt-get clean \
|| exit
split "14/14 bootstrap"
"${DIRECTORY}/bootstrap.sh"