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#!/usr/bin/with-contenv bash
if [[ ! -f /usr/bin/apt ]]; then
cat <<-EOF
********************************************************
********************************************************
* *
* !!!! *
* universal-calibre mod is only supported on images *
* using an Ubuntu base image. *
* *
********************************************************
********************************************************
EOF
exit 0
fi
export DEBIAN_FRONTEND="noninteractive"
CALIBRE_RELEASE="$(cat /CALIBRE_RELEASE)"
if [ -z ${CALIBRE_RELEASE+x} ]; then
CALIBRE_RELEASE=$(curl -sX GET "https://api.github.com/repos/kovidgoyal/calibre/releases/latest" \
| awk '/tag_name/{print $4;exit}' FS='[""]'); \
fi
if [[ ! -e /usr/bin/calibre-server ]] || [[ "${CALIBRE_RELEASE}" != "$(cat /config/.CALIBRE_RELEASE || :)" ]]; then
tar xf \
/tmp/calibre.txz \
-C /app/calibre
rm /tmp/calibre.txz
echo "Installing Calibre version $(cat /CALIBRE_RELEASE)"
/app/calibre/calibre_postinstall
echo "${CALIBRE_RELEASE}" > /config/.CALIBRE_RELEASE
fi