#!/bin/bash

. ~/.profile.d/gentoo.sh
. ~/.profile.d/aliases.sh

op=${0##*/}
ops=( ${op//-/ } )
op=${ops[0]}
[[ ${op} == "er" ]] && op+=" -q"
tdir="${HOME}/.cache/bugz"
mkdir -p "${tdir}"
find "${tdir}" -mmin +30 -type f -delete

usage() {
	cat <<-EOF
	Usage: ${0##*/} <bugid> <reason> [<bugid> <reason> ...]
	EOF
	if [[ $# -gt 0 ]] ; then
		printf '\nerror: %s\n' "$*"
	fi
	exit
}

bugs=()
comments=()
cl_msg=
while [[ $# -ne 0 ]] ; do
	bug=$1
	reason=$2
	shift 2 || usage "invalid args"

	if [[ -z ${bug} || -n ${bug//[0-9#]} ]] ; then
		usage "invalid bug"
	fi

	case ${bug} in
		*#*) c=${bug##*#} ;;
		*)   c=0 ;;
	esac
	: $(( ++c ))
	b=${bug%%#*}
	bugs=( "${bugs[@]}" ${b} )
	comments=( "${comments[@]}" "${reason}" )

	xml="${tdir}/${b}.xml"
	# server doesn't support timestamps, so cannot use -N
	if [[ ! -s $xml ]] ; then
		wget -q -O $xml https://bugs.gentoo.org/${b}?ctype=xml
	fi
	name=$(xml sel -E utf8 -t -m bugzilla/bug/long_desc -c who -n $xml | \
		head -${c} | tail -1 | grep -o 'name=".*">' | cut -d\" -f2)
	if [[ -z ${name} ]] ; then
		name=$(xml sel -E utf8 -t -m bugzilla/bug/long_desc -v who -n $xml | \
			head -${c} | tail -1 | cut -d@ -f1)
	fi
	new_name=$(echo "${name}" | scrub_html | sed "s: [(\"'][^()\"']*[)\"']::g")
	if [[ ${new_name} != "${name}" ]] ; then
		echo "Normalizing '${name}' to '${new_name}'"
		name=${new_name}
	fi

	if [[ -n ${cl_msg} ]] ; then
		cl_msg+="  "
	fi
	cl_msg+="${reason} #${bug} by ${name}."
done

run() {
	local opt=$1; shift
	printf "'%s' " "$@"
	echo
	case $opt in
	-g) "$@" ;;
	esac
}

doit() {
	run "$@" $op "${cl_msg}" || exit 1
	echo
	for (( n=0; n < ${#bugs[@]}; ++n )) ; do
		b=${bugs[$n]}
		c=${comments[$n]}
		local msg="Commit message: $c$(printf '\n%s' ${urls})"

		case ${ops[1]} in
		close)
			run "$@" gbugz -q modify ${b} --fixed -c "\
should be all set now in the tree; thanks for the report!

${msg}"
			;;
		comment)
			run "$@" gbugz -q modify ${b} -c "${msg}"
			;;
		esac
	done
	echo
}

cvs=$(cvs up)
files=$(echo "$cvs" | awk '$1 ~ /^[MA]/ { print $NF }' | grep -v '^Manifest$')
unk_files=$(echo "$cvs" | awk '$1 !~ /^[MARU]/')
if [[ -n ${unk_files} ]] ; then
	echo "unknown files:"
	echo "${unk_files}"
	exit 1
fi
urls=$(cvs_gentoo_url ${files} | LC_ALL=C sort -V)

cmds=$(doit -p)
echo
echo "${cmds}"
printf "\nOk to go? [Y/n/e] "
read g
case ${g} in
	e)
		t=$(mktemp)
		echo "${cmds}" > "${t}"
		${EDITOR:-nano} "${t}" || rm "${t}"
		set -e
		. "${t}"
		rm "${t}"
		;;
	""|y)
		echo
		doit -g
		;;
	*)
		exit 1
		;;
esac