INFO=" |Ubuntu Server|Ubuntu||https://ubuntu.com/server|Brings economic and technical scalability to your datacentre, public or private. Whether you want to deploy an OpenStack cloud, a Kubernetes cluster or a 50,000-node render farm, Ubuntu Server delivers the best value scale-out performance available.";;

function releases_ubuntu-server() {
    local ALL_VERSIONS=($(IFS=$'\n' wget -qO- http://releases.ubuntu.com/streams/v1/com.ubuntu.releases:ubuntu-server.json | jq -r '.products[] | select(.arch=="amd64") | .version'))
    local LTS_SUPPORT=()
    local INTERIM_SUPPORT=()

    for i in "${!ALL_VERSIONS[@]}"; do
        if [[ $i == 0 || ${ALL_VERSIONS[$i]} > ${ALL_VERSIONS[$(expr $i - 1)]} ]]; then
            if [[ $(expr ${ALL_VERSIONS[${i}]%.*} % 2) == 0 && ${ALL_VERSIONS[${i}]#*.} == "04" ]]; then
                LTS_SUPPORT+=(${ALL_VERSIONS[$i]})
            else
                INTERIM_SUPPORT+=(${ALL_VERSIONS[$i]})
            fi
        else
            break
        fi
    done
    echo ${LTS_SUPPORT[@]} ${INTERIM_SUPPORT[@]} daily-live
}

function get_ubuntu-server() {
    local HASH=""
    local ISO=""
    local URL=""

    [[ $RELEASE = daily ]] && RELEASE=daily-live

    if [[ "${RELEASE}" == "daily"* ]]; then
        URL="https://cdimage.ubuntu.com/${OS}/${RELEASE}/current"
    else
        URL="https://releases.ubuntu.com/${RELEASE}"
    fi

    if wget -q --spider "${URL}/SHA256SUMS"; then
        DATA=$(wget -qO- "${URL}/SHA256SUMS" | grep 'live-server' | grep amd64 | grep iso)
        ISO=$(cut -d'*' -f2 <<<${DATA})
        HASH=$(cut_1 <<<${DATA})
    else
        DATA=$(wget -qO- "${URL}/MD5SUMS" | grep 'live-server' | grep amd64 | grep iso)
        ISO=$(cut -d' ' -f3 <<<${DATA})
        HASH=$(cut_1 <<<${DATA})
    fi

    if [ -z $ISO ] || [ -z $HASH ]; then
        echo "$(pretty_name $OS) ${RELEASE} is currently unavailable. Please select other OS/Release combination"
        exit 1
    fi

    if [[ "${RELEASE}" == "daily"* ]] || [ "${RELEASE}" == "dvd" ]; then
        zsync_get "${URL}/${ISO}" "${VM_PATH}" "${OS}-devel.iso"
        make_vm_config "${OS}-devel.iso"
    else
        web_get "${URL}/${ISO}" "${VM_PATH}"
        check_hash "${ISO}" "${HASH}"
        make_vm_config "${ISO}"
    fi
}