#!/bin/bash
# Copyright © 2010 - 2021 Steve Youngs. All rights reserved.
# SPDX-License-Identifier: BSD-3-Clause

# Author:     Steve Youngs <steve@sxemacs.org>
# Maintainer: Steve Youngs <steve@sxemacs.org>
# Created:    <2010-12-01>
# Time-stamp: <Sunday 16 May 2021 20:05:12 (steve)>
# Homepage:   https://git.sxemacs.org/pkgusr
# Keywords:   pkgusr package-management tools

## This file is part of pkgusr

### Commentary:
#
# Updates the timestamp and contents in a package's .project
# $1 -- package to update, if null current pkgusr
# $2 -- '--subgroups' optional.  Use if the package is split into
# subgroups.
#
# All the work is done in list_package (see: list_package --help)

### Code
pkg="$1"
subgrps="$2"

# Allow for 'update-pkg-project --subgroups' invocation
# Hint: if it is not a pkgusr doing this the resulting error message
# from list_package will set you straight. :)
if [[ ${pkg} =~ ^--?subgroups$ ]]; then
    pkg=$(whoami)
    subgrps='--subgroups'
fi

# Allow for no cmdline opts
if [ -z "${pkg}" ]; then
    pkg=$(whoami)
fi

pkgdir=/usr/src/${pkg}
pkgawk=/usr/lib/pkgusr/pkgdeps.awk

# Clear out old file list
sed -i -n 1,/CONTENTS:/p ${pkgdir}/.project
echo "--------" >> ${pkgdir}/.project

# Update the mandb so we get up to date results
# See /usr/lib/pkgusr/mandb and /etc/sudoers.d/99-pkgusr
mandb

# Re-populate .project (source'd to get at $AEXEC)
source list_package ${pkg} ${subgrps} >> ${pkgdir}/.project

# Find deps
upd_pkg_deps()
{
    # $AEXEC comes from list_package
    for file in ${AEXEC[@]}; do
	if readelf -d $file &>/dev/null && ldd $file &>/dev/null; then
	    (readelf -d $file ; ldd $file ) |
	    awk -f ${pkgawk} | xargs -r stat --printf "%U:%G\n"
	fi
    done | sort -u | tr -s '\n' ' '
}


# Update Timestamp
TIMESTAMP=$(date +%c)
sed -i "s/\(Last_Updated: \).*$/\1${TIMESTAMP}/" ${pkgdir}/.project

# Update Deps (a wee bit ugly in my eyes, sorry)
DEPS=$(upd_pkg_deps)
DEPS="Deps: ${DEPS% }"			# trailing whitespace begone!
sed -i -e /Deps:/d -e "/Web_Site/a ${DEPS}" ${pkgdir}/.project
fmt -p Deps: ${pkgdir}/.project > ${pkgdir}/.project.fmt
sed -i 's/^Deps:/         &/' ${pkgdir}/.project.fmt
mv ${pkgdir}/.project{.fmt,}

# If we're root, chown the .project file
[[ $(id -u) -eq 0 ]] && chown -v ${pkg}:${pkg} ${pkgdir}/.project
exit 0