#!/bin/sh

DEST=$1

PKGVERSION="$VERSION"
if test -n "$(git status --porcelain)"
then
	PKGVERSION="$PKGVERSION-$(date +%Y%m%d%H%M%S)-$GITCOMMIT"
fi

PACKAGE_ARCHITECTURE="$(dpkg-architecture -qDEB_HOST_ARCH)"
PACKAGE_URL="http://www.docker.io/"
PACKAGE_MAINTAINER="docker@dotcloud.com"
PACKAGE_DESCRIPTION="lxc-docker is a Linux container runtime
Docker complements LXC with a high-level API which operates at the process
level. It runs unix processes with strong guarantees of isolation and
repeatability across servers.
Docker is a great building block for automating distributed systems:
large-scale web deployments, database clusters, continuous deployment systems,
private PaaS, service-oriented architectures, etc."

UPSTART_SCRIPT='description     "Docker daemon"

start on filesystem and started lxc-net
stop on runlevel [!2345]

respawn

script
    /usr/bin/docker -d
end script
'

# Build docker as an ubuntu package using FPM and REPREPRO (sue me).
# bundle_binary must be called first.
bundle_ubuntu() {
	DIR=$DEST/build

	# Generate an upstart config file (ubuntu-specific)
	mkdir -p $DIR/etc/init
	echo "$UPSTART_SCRIPT" > $DIR/etc/init/docker.conf

	# Copy the binary
	# This will fail if the binary bundle hasn't been built
	mkdir -p $DIR/usr/bin
	# Copy the binary
	# This will fail if the binary bundle hasn't been built
	cp $DEST/../binary/docker-$VERSION $DIR/usr/bin/docker

	# Generate postinstall/prerm scripts
	cat >/tmp/postinstall <<EOF
#!/bin/sh
/sbin/stop docker || true
/bin/grep -q "^docker:" /etc/group || /usr/sbin/addgroup --system docker || true
/sbin/start docker
EOF
	cat >/tmp/prerm <<EOF
#!/bin/sh
/sbin/stop docker || true
/usr/sbin/delgroup docker || true
EOF
	chmod +x /tmp/postinstall /tmp/prerm

	(
		cd $DEST
		fpm -s dir -C $DIR \
		    --name lxc-docker-$VERSION --version $PKGVERSION \
		    --after-install /tmp/postinstall \
		    --before-remove /tmp/prerm \
		    --architecture "$PACKAGE_ARCHITECTURE" \
		    --prefix / \
		    --depends lxc --depends aufs-tools \
		    --description "$PACKAGE_DESCRIPTION" \
		    --maintainer "$PACKAGE_MAINTAINER" \
		    --conflicts lxc-docker-virtual-package \
		    --provides lxc-docker \
		    --provides lxc-docker-virtual-package \
		    --replaces lxc-docker \
		    --replaces lxc-docker-virtual-package \
		    --url "$PACKAGE_URL" \
		    --vendor "$PACKAGE_VENDOR" \
		    -t deb .
		mkdir empty
		fpm -s dir -C empty \
		    --name lxc-docker --version $PKGVERSION \
		    --architecture "$PACKAGE_ARCHITECTURE" \
		    --depends lxc-docker-$VERSION \
		    --description "$PACKAGE_DESCRIPTION" \
		    --maintainer "$PACKAGE_MAINTAINER" \
		    --url "$PACKAGE_URL" \
		    --vendor "$PACKAGE_VENDOR" \
		    -t deb .
	)
}

bundle_ubuntu