#!/usr/bin/rc
## DOC: cran2deb update
## DOC:     update the cran2deb cache and database
## DOC: cran2deb update full
## DOC:     force a full update of the cran2deb cache and database
## DOC:

umask 002
root=$1
shift
mkdir -p /var/cache/cran2deb/results || exit 1
mini-dinstall --batch -c /etc/cran2deb/mini-dinstall.conf || exit 1
update_period=10800
if (~ $1 full || ![ -e /var/cache/cran2deb/cache.rda ] ) {
    delta=`{awk 'END{print '^$update_period^'+1}' </dev/null}
    echo Forcing cache update
} else {
    delta=`{awk 'END{print '^`{date +%s}^-^`{stat -c '%Y' /var/cache/cran2deb/cache.rda}^'}' </dev/null}
    echo Cache is $delta seconds out of date.
}
if (![ -e /var/cache/cran2deb/cache.rda ] || [ $delta -gt $update_period ]) {
    mode=create
    if ([ -e /var/cache/pbuilder/base-cran2deb.tgz ]) {
        mode=update
    }
    sudo pbuilder $mode --override-config --configfile /etc/cran2deb/pbuilderrc
    $root/exec/update_cache $root
}