binhost

#!/usr/bin/env bash

source /etc/init.d/functions.sh

function BH_SHOW_HELP()
{
	einfo "Build a package:"
	echo -e "	./binhost install all/<env-name> app-editors/vim\n"
	einfo "Update all packages:"
	echo -e "	./binhost update all/<env-name>\n"
	einfo "Re-build all packages:"
	echo -e "	./binhost emptytree all/<env-name>\n"
	einfo "Cleanup packages (depclean, python-updater, eclean, ect):"
	echo -e "	./binhost cleanup all/<env-name>\n"
	einfo "Full documentation:"
	echo -e "	https://github.com/p8952/binhost-utils"
	exit
}

function BH_CHECK_ENV()
{
	if [[ ! -d $1 ]]; then
		eerror "Enviroment $1 does not exist"
		exit 1
	fi

	for dir in bin boot dev etc home lib media mnt opt proc root run sbin sys tmp usr var; do
		if [[ ! -d $1/$dir ]]; then
			eerror "Enviroment $1 does not contain stage3 files"
			exit 1
		fi
	done

	if [[ ! -d $1/usr/portage ]]; then
		mkdir -p $1/usr/portage
	fi

	for dir in dev proc sys usr/portage; do
		if ! grep -qs $1/$dir /proc/mounts; then
			einfo "Enviroment $(basename $1) does not have $dir mounted... mounting"
			mount -o rbind /$dir /$1/$dir
			mount -o remount,rbind,ro /$dir /$1/$dir
		fi
	done
}

function BH_CONFIG_UPDATE()
{
	cp -r $BH_SCRIPT_DIR/conf/make.conf $1/etc/portage/
	cp -r $BH_SCRIPT_DIR/conf/package.* $1/etc/portage/
	cp -r $BH_SCRIPT_DIR/conf/resolv.conf $1/etc/

	for dir in $(find $BH_SCRIPT_DIR/conf/* -type d); do
		if [[ $(basename $1) -eq $(basename $dir) ]]; then
			cp -r $BH_SCRIPT_DIR/conf/$(basename $dir)/make.conf $1/etc/portage/
			cp -r $BH_SCRIPT_DIR/conf/$(basename $dir)/package.* $1/etc/portage/
			cp -r $BH_SCRIPT_DIR/conf/$(basename $dir)/resolv.conf $1/etc/
		fi
	done
}

function BH_EMERGE()
{
	if [[ $2 == "install" ]]; then
		chroot $1 /usr/bin/emerge $3
	elif [[ $2 == "update" ]]; then
		chroot $1 /usr/bin/emerge --update --newuse --deep @world
	elif [[ $2 == "emptytree" ]]; then
		chroot $1 /usr/bin/emerge --emptytree @world
	elif [[ $2 == "cleanup" ]]; then
		chroot $1 /usr/bin/emerge --depclean
		chroot $1 /usr/bin/revdep-rebuild
		chroot $1 /usr/sbin/python-updater
		chroot $1 /usr/sbin/perl-cleaner --all
		chroot $1 /usr/bin/eclean packages
		chroot $1 /usr/bin/eclean distfiles
	fi
}

function BH_CLEANUP()
{
	chroot $1 /usr/sbin/emaint -f binhost

	for dir in dev proc sys usr/portage; do
		if grep -qs $1/$dir /proc/mounts; then
			einfo "Unmounting $dir from $(basename $1)"
			umount -l /$1/$dir
		fi
	done
}

BH_SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
BH_CHROOT_DIR="$BH_SCRIPT_DIR/chroots/"
BH_CHROOT_ENV=("gentoo-amd64")
BH_SELECTED_OPTS=0
BH_SELECTED_ARCH=0
BH_SELECTED_PKGS=0

if [[ $1 == "install" ]]; then
	if [[ $# -eq 3 ]]; then
		BH_SELECTED_OPTS=$1
		BH_SELECTED_ARCH=$2
		BH_SELECTED_PKGS=$3
	else
		BH_SHOW_HELP
	fi
elif [[ $1 == "update" ]]; then
	if [[ $# -eq 2 ]]; then
		BH_SELECTED_OPTS=$1
		BH_SELECTED_ARCH=$2
		BH_SELECTED_PKGS=0
	else
		BH_SHOW_HELP
	fi
elif [[ $1 == "emptytree" ]]; then
	if [[ $# -eq 2 ]]; then
		BH_SELECTED_OPTS=$1
		BH_SELECTED_ARCH=$2
		BH_SELECTED_PKGS=0
	else
		BH_SHOW_HELP
	fi
elif [[ $1 == "cleanup" ]]; then
	if [[ $# -eq 2 ]]; then
		BH_SELECTED_OPTS=$1
		BH_SELECTED_ARCH=$2
		BH_SELECTED_PKGS=0
	else
		BH_SHOW_HELP
	fi
else
	BH_SHOW_HELP
fi

if [[ ! $BH_SELECTED_ARCH == "all" ]]; then
	unset -v BH_CHROOT_ENV
	BH_CHROOT_ENV=$BH_SELECTED_ARCH
fi

for BH_ENV in ${BH_CHROOT_ENV[@]}; do
	BH_CHECK_ENV $BH_CHROOT_DIR$BH_ENV
	BH_CONFIG_UPDATE $BH_CHROOT_DIR$BH_ENV
	BH_EMERGE $BH_CHROOT_DIR$BH_ENV $BH_SELECTED_OPTS $BH_SELECTED_PKGS
	BH_CLEANUP $BH_CHROOT_DIR$BH_ENV
done