#!/bin/bash

UPDATEVM=`qvm-get-updatevm`
if [ -z "$UPDATEVM" ]; then
    echo "UpdateVM not set, exiting"
    exit 1
fi

if [ "$1" = "--help" ]; then
    echo "This tool is used to download packages for dom0. Without package list"
    echo "it checks for updates for installed packages"
    echo ""
    echo "Usage: $0 [--clean] [<pkg list>]"
    echo "    --clean      clean yum cache before doing anything"
    echo "    <pkg list>   download (and install if run by root) new packages"
    echo "                 in dom0 instead of updating"
    exit
fi

# We should ensure the clocks in Dom0 and UpdateVM are in sync
# becuase otherwise yum might complain about future timestamps
qvm-sync-dom0-clock

echo "Checking for dom0 updates"

# Start VM if not running already
qvm-run -a $UPDATEVM true || exit 1
/usr/lib/qubes/sync_rpmdb_updatevm.sh || exit 1
qvm-run --pass_io $UPDATEVM "/usr/lib/qubes/qubes_download_dom0_updates.sh --doit --nogui $*" || exit 1
# Wait for download completed
while pidof -x qubes-receive-updates >/dev/null; do sleep 0.5; done
if [ $# -gt 0 ]; then

    ID=$(id -ur)
    if [ $ID != 0 ] ; then
        echo "This script should be run as root, use sudo next time."
        echo "Now you can manually run yum install (use sudo again)."
        exit
    fi

    yum install $@
elif [ -f /var/lib/qubes/updates/repodata/repomd.xml ]; then
    # Above file exists only when at least one package was downloaded
    yum check-update
    if [ $? -eq 100 ]; then

        ID=$(id -ur)
        if [ $ID != 0 ] ; then
            echo "This script should be run as root, use sudo next time."
            echo "Now you can manually run yum update (use sudo again)."
            exit
        fi
        yum update
    fi
else
    echo "No updates avaliable"
fi