#!/bin/bash
#
# fedoradev-pkgowners - Output list of packages owners by packages name
# Copyright (c) 2007 Thorsten Leemhuis <fedora@leemhuis.info>
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#

## globally used
file_fadcsvdata=
file_pkgdbfiledata=
list_of_packages=
print_comaintainers=
print_email=
print_realname=
tmpfile_owners=

##  globally used with defaults
myprog_name=fedoradev-pkgowners
myprog_version=0.0.1
# look for Fedora (and not epel) by default:
filter_for="Fedora"

# initialization
this_init()
{
	# we need to get the package names from somewhere
	# if there is a better way to check that input is comeing from a 
	#  pipe please let me know
	if [[ ! "${list_of_packages}" ]] && [[ ! -p /proc/$$/fd/0 ]]; then
		echo "Provide list of package names on command line or via pipe" >&2
		exit 2
	fi

	# we need fasfile for some optional output options
	if ( [[ "${print_email}" ]] || [[ "${print_realname}" ]] ) && [[ ! "${file_fadcsvdata}" ]] ; then
		echo "Please provide the name of the file with the FAS dumb via --fasfile <file>" >&2
		echo " Download it using your FAS username and password from:" >&2
		echo " https://admin.fedora.redhat.com/accounts/dump-group.cgi?group=cvsextras&format=csv"  >&2
		exit 2
	fi

	# check fasfile -- needs to be local, thus check first
	if [[ "${file_fadcsvdata}" ]]; then
		if [[ ! -s "${file_fadcsvdata}" ]]; then
			echo "Could not find fas-datafile ${file_fadcsvdata}" >&2
			exit 2
		fi

		# check if that file contains data as we expect it
		if ! grep --max-count=1 -E '^.*,.*@.*,(user|sponsor|administrator),[0-9]*$' "${file_fadcsvdata}" &>/dev/null; then
			echo "File ${file_fadcsvdata} does not look like a fas file in cvs format" >&2
			exit 2
		fi
	fi

	# pkgdb bugzilla data for owners
	if [[ "${file_pkgdbfiledata}" ]]; then
		if [[ ! -s "${file_pkgdbfiledata}" ]]; then
			echo "Could not find pgkdb-datafile ${file_pkgdbfiledata}" >&2
			exit 2
		fi
	else
		# download it to tmpfile
	
		# remove tmpfile_owners on CTRL+C
		trap "this_finish" 2

		# download owners
		tmpfile_owners=$(mktemp -t ${myprog_name}.XXXXXXXXX)
		wget --quiet --output-document="${tmpfile_owners}" "https://admin.fedoraproject.org/pkgdb/acls/bugzilla?tg_format=plain"
	
		# did download of owners succeed?
		local returncode=$?
		if (( ${returncode} > 0 )) || [[ ! -s "${tmpfile_owners}" ]] ; then
			echo "Could not download informations about owners from"$'\n'"https://admin.fedoraproject.org/pkgdb/acls/bugzilla?tg_format=plain ; aborting!" >&2
			this_finish
			exit 2
		fi

		# 
		file_pkgdbfiledata="${tmpfile_owners}"
	fi

	# check if that file contains data as we expect it
	if ! grep --max-count=1 -E '^Fedora*\|.*\|.*\|.*\|\|' "${file_pkgdbfiledata}" &>/dev/null; then
		echo "File ${file_pkgdbfiledata} does not look like a pgkdb bugzilla dump" >&2
		this_finish
		exit 2
	fi
}

lookup_package()
{
	local package_info="$(grep "${filter_for}|${1}|" "${file_pkgdbfiledata}")"
	local owner="$(echo ${package_info} | cut -d '|' -f 4)"
	if [[ ! "${owner}" ]]; then
		# grep did not find anything or something else went wrong
		echo "Could not find owner for ${1}" >&2
		return 1
	fi


	# co-maintainers?
	if [[ "${print_comaintainers}" ]]; then
		local comaintainers="$(echo ${package_info} | cut -d '|' -f 6 | sed 's| |,|g') "
		if [[ "${comaintainers}" = " " ]]; then
			comaintainers="(none)"
		fi
	fi

	# more data?
	if [[ "${print_email}" ]] || [[ "${print_realname}" ]]; then
		local fasline="$(grep -E "^${owner},.*@.*,(user|sponsor|administrator),[0-9]*$" "${file_fadcsvdata}")"
		if [[ "${fasline}" ]]; then
			[[ "${print_email}" ]] && local email_owner="$(echo ${fasline} | cut -d ',' -f 2) "
			[[ "${print_realname}" ]] && local realname_owner="$(echo ${fasline} | cut -d ',' -f 3) "
		else
			echo "Could not find FAS-data for ${owner}" >&2
			[[ "${print_email}" ]] && local email_owner="(unknown) "
			[[ "${print_realname}" ]] && local realname_owner="(unknown) "
		fi

		# feature for later: print more info for co-maintainers as well?
	fi
	
	# print
	echo "${owner} ${1} ${email_owner}${realname_owner}${comaintainers}"
}

this_finish()
{
	[[ -e "${tmpfile_owners}" ]] && rm "${tmpfile_owners}"
}

myprog_help()
{
	echo "Usage: ${myprog_name}  [options] [list of pkgnames]"
	echo "       echo pkgname | ${myprog_name} [options]"
	echo $'\n'"Outputs list of Fedora packages owners for packages from [list] or stdin"
	echo $'\n'"Available options:"
	echo " --comaintainers    -- print comaintainers as well"
	echo " --email            -- print email (needs --fasfile<file>)"
	echo " --epel             -- look epel owner(s) up"
	echo " --fasfile <file>   -- get email or real name from fas-file ; download uri:"
	echo "   https://admin.fedora.redhat.com/accounts/dump-group.cgi?group=cvsextras&format=csv"
	echo " --pkgdbfile <file> -- get pkgowners from local file instead of downloading it from:"
	echo "   https://admin.fedoraproject.org/pkgdb/acls/bugzilla?tg_format=plain"
	echo " --realname         -- print realname (needs --fasfile <file>)"
	echo
	echo " --help             -- this text"
	echo " --version          -- output version"
	echo
	echo " Hint: use '${myprog_name} | sort | column -t' for properly formated output."
}

# parse cmdline options
while [ "${1}" ] ; do
	case "${1}" in
		--comaintainers)
			print_comaintainers="true"
			shift
			;;
		--email)
			print_email="true"
			shift
			;;
		--epel)
			filter_for="Fedora EPEL"
			shift
			;;
		--fasfile)
			shift
			file_fadcsvdata="${1}"
			shift
			;;
		--realname)
			print_realname="true"
			shift
			;;
		--pkgdbfile)
			shift
			file_pkgdbfiledata="${1}"
			shift
			;;
		--help)
			myprog_help
			exit 0
			;;
		--version)
			echo "${myprog_name} ${myprog_version}"
			exit 0
			;;
		--*)
			echo "Error: Unknown option '${1}'." >&2
			myprog_help >&2
			exit 2
			;;
		*)
			list_of_packages="${list_of_packages} ${1}"
			shift
			;;
	esac
done

# initialization and startup checks
this_init

# go
if [[ "${list_of_packages}" ]]; then
	for package in ${list_of_packages} ; do
		lookup_package ${package}
	done
elif [[ -p /proc/$$/fd/0 ]]; then
	# read list of packages from stdin (seperated by newline or space)
	while read list_of_packages ; do
		for package in ${list_of_packages} ; do
			lookup_package ${package}
		done
	done
fi

# cleanup
this_finish