#!/bin/sh

# live-build(7) - System Build Scripts
# Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# The complete text of the GNU General Public License
# can be found in /usr/share/common-licenses/GPL-3 file.

set -e

# Checking meta-data directory
if [ ! -e .build ]
then
	echo "fatal: Not a live-build configuration in ${PWD}/: .build"
	exit 1
fi

# Checking meta-data file
if [ ! -e .build/bootstrap_debootstrap ]
then
	echo "${0} already run, skipping."
	exit 0
fi

# Checking host dependencies
if [ ! -x "$(which debootstrap 2>/dev/null)" ]
then
	echo "E: debootstrap - command not found"
	echo "I: debootstrap can be obtained from http://ftp.debian.org/debian/pool/main/d/debootstrap/"
	echo "I: On Debian based systems, debootstrap can be installed with 'sudo apt install debootstrap'."
	exit 1
fi

# Creating lock file
# FIXME

# Reading archive configuration
for FILE in config/archives/debian.list.bootstrap config/archives/debian.list
do
	if [ -e "${FILE}" ]
	then
		DEB="$(grep -m 1 '^deb ' ${FILE})"

		ARCHIVE_URI="$(echo ${DEB} | awk '{ print $2 }')"
		ARCHIVE_SUITE="$(echo ${DEB} | awk '{ print $3 }')"
		ARCHIVE_COMPONENTS="$(echo ${DEB} | awk -F${ARCHIVE_SUITE} '{ print $2 }' | sed -e 's|^ ||')"

		break
	fi
done

# Setting archive defaults
ARCHIVE_URI="${ARCHIVE_URI:-${DEFAULT_ARCHIVE_URI}}"
ARCHIVE_SUITE="${ARCHIVE_SUITE:-${DEFAULT_ARCHIVE_SUITE}}"
ARCHIVE_COMPONENTS="${ARCHIVE_COMPONENTS:-${DEFAULT_ARCHIVE_COMPONENTS}}"

# Creating cache directory
mkdir -p "cache/${DISTRIBUTION}"

# Creating chroot directory
mkdir -p chroot

# Setting debootstrap options
DEBOOTSTRAP_OPTIONS=""

if [ "${ARCHIVE_AREAS}" != "main" ]
then
	DEBOOTSTRAP_OPTIONS="${DEBOOTSTRAP_OPTIONS} --components=$(echo ${ARCHIVE_AREAS} | sed -e 's| |,|g')"
fi

if [ "${LB_CACHE_PACKAGES}" = "true" ]
then
	if ls cache/packages.bootstrap/*.deb > /dev/null 2>&1
	then
		mkdir -p chroot/var/cache/apt/archives
		cp cache/packages.bootstrap/*.deb chroot/var/cache/apt/archives
	fi

	Echo_breakage "Running debootstrap (download-only)... "
	debootstrap ${DEBOOTSTRAP_OPTIONS} --download-only "${LB_PARENT_DISTRIBUTION}" chroot "${LB_PARENT_MIRROR_BOOTSTRAP}"

	# Removing old cache
	rm -f cache/packages.bootstrap/*.deb

	# Saving new cache
	mkdir -p cache/packages.bootstrap
	cp chroot/var/cache/apt/archives/*.deb cache/packages.bootstrap
fi

Echo_breakage "Running debootstrap... "

# Run appropriate bootstrap, i.e. foreign or regular bootstrap
if [ "${LB_BOOTSTRAP_QEMU_ARCHITECTURES}" = "${LB_ARCHITECTURES}" ]; then

	if [ -n "${LB_BOOTSTRAP_QEMU_EXCLUDE}" ]
	then
		DEBOOTSTRAP_OPTIONS="${DEBOOTSTRAP_OPTIONS} --exclude=$(echo ${LB_BOOTSTRAP_QEMU_EXCLUDE} | sed 's|  *|,|g')"
	fi

	Echo_message "Bootstrap will be foreign"
	debootstrap ${DEBOOTSTRAP_OPTIONS} --foreign "${LB_PARENT_DISTRIBUTION}" chroot "${LB_PARENT_MIRROR_BOOTSTRAP}"

	Echo_message "Running debootstrap second stage under QEMU"
	cp ${LB_BOOTSTRAP_QEMU_STATIC} chroot/usr/bin
	Chroot chroot /bin/sh /debootstrap/debootstrap --second-stage
else
	debootstrap ${DEBOOTSTRAP_OPTIONS} "${LB_PARENT_DISTRIBUTION}" chroot "${LB_PARENT_MIRROR_BOOTSTRAP}"
fi

# Deconfiguring debootstrap configurations
rm -f chroot/etc/hosts

# Removing bootstrap cache
rm -f chroot/var/cache/apt/archives/*.deb

# Creating stage file
Create_stagefile .build/bootstrap