#!/bin/bash

#

# Copyright (C) 2016 Colin Walters <walters@verbum.org>

#

# SPDX-License-Identifier: LGPL-2.0+

#

# This library is free software; you can redistribute it and/or

# modify it under the terms of the GNU Lesser General Public

# License as published by the Free Software Foundation; either

# version 2 of the License, or (at your option) any later version.

#

# This library 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

# Lesser General Public License for more details.

#

# You should have received a copy of the GNU Lesser General Public

# License along with this library; if not, write to the

# Free Software Foundation, Inc., 59 Temple Place - Suite 330,

# Boston, MA 02111-1307, USA.

set -euo pipefail

. $(dirname $0)/libtest.sh

skip_without_fuse

skip_without_user_xattrs

echo "1..1"

# Run "triggers" like ldconfig, gtk-update-icon-cache, etc.

demo_triggers() {

    root=$1

    shift

    mkdir -p ${root}/usr/lib

    echo updated ldconfig at $(date) > ${root}/usr/lib/ld.so.cache.new

    mv ${root}/usr/lib/ld.so.cache{.new,}

}

# Make a binary in /usr/bin/$pkg which contains $version

exampleos_build_commit_package() {

    pkg=$1

    version=$2

    mkdir -p ${pkg}-package/usr/bin/

    echo "${pkg}-content ${version}" > ${pkg}-package/usr/bin/${pkg}

    # Use a dummy subject for this.

    ${CMD_PREFIX} ostree --repo=build-repo commit -b exampleos/x86_64/${pkg} -s '' --tree=dir=${pkg}-package

    rm ${pkg}-package -rf

}

exampleos_recompose() {

    rm exampleos-build -rf

    for pkg in ${packages}; do

	${CMD_PREFIX} ostree --repo=build-repo checkout -U --union exampleos/x86_64/${pkg} exampleos-build

    done

    # Now that we have our rootfs, run triggers

    rofiles-fuse exampleos-build mnt

    demo_triggers mnt/

    fusermount -u mnt

    # Then we commit it, using --link-checkout-speedup to effectively

    # only re-checksum the ldconfig file.  We also have dummy commit

    # message here.

    ${CMD_PREFIX} ostree --repo=build-repo commit -b exampleos/x86_64/standard -s 'exampleos build' --link-checkout-speedup exampleos-build

}

packages="bash systemd"

mkdir build-repo

ostree_repo_init build-repo --mode=bare-user

mkdir repo

ostree_repo_init repo --mode=archive

# Our FUSE mount point

mkdir mnt

# "Build" some packages which are really just files with

# the version number inside.

exampleos_build_commit_package bash 0.4.7

exampleos_build_commit_package systemd 224

# Now union the packages and commit

exampleos_recompose

# This is our first commit - let's publish it.

${CMD_PREFIX} ostree --repo=repo pull-local build-repo exampleos/x86_64/standard

# Now, update the bash package - this is a new commit on the branch

# exampleos/x86_64/bash.

exampleos_build_commit_package bash 0.5.0

# We now have two commits

exampleos_recompose

# Publish again:

${CMD_PREFIX} ostree --repo=repo pull-local build-repo exampleos/x86_64/standard

# Optional: Generate a static delta vs the previous build

${CMD_PREFIX} ostree --repo=repo static-delta generate exampleos/x86_64/standard

# Optional: Regenerate the summary file

${CMD_PREFIX} ostree --repo=repo summary -u

# Try: ostree --repo=demo-repo ls -R exampleos/x86_64/standard

echo "ok demo buildsystem"