#!/bin/bash

MESSAGE="Version bump."
ROOT="/home/donnie/src/gentoo-x86"
CATEGORY="${PWD##*/}"
DEBUG=0
COMMIT=0

if [[ $# -eq 0 ]]; then
	echo "Usage: ${0##*/} [-c] [-b] [-m MESSAGE] [-d ROOT] [-p PACKAGE] [-p PACKAGE] [...]"
	echo
	echo "Will bump any number of packages in PWD, which should be a category."
	echo "Assumes that the ebuild in PWD has already been bumped to the new version."
	echo "By default, bumps all packages in a category."
	echo
	echo "-c             Required for committing; otherwise, does a dry run"
	echo "-b             Debugging; dry run"
	echo "-m MESSAGE     Use this for a commit message"
	echo "-d ROOT        Use this CVS root"
	echo "-p PACKAGE     Bump these packages"
	echo
	echo "Default settings:"
	echo "  MESSAGE='${MESSAGE}'"
	echo "  ROOT=${ROOT}"
	echo "  PACKAGES=${PACKAGES}"
	exit 1
fi

while getopts m:d:p:bc OPT; do
	case ${OPT} in
		m) MESSAGE=${OPTARG} ;;
		d) [[ -d ${OPTARG} ]] && ROOT=${OPTARG} ;;
		p) [[ -d ${OPTARG} ]] && PACKAGES="${PACKAGES} ${OPTARG%/}" ;;
		b) DEBUG=1 ;;
		c) COMMIT=1 ;;
	esac
done
shift $((OPTIND - 1)) 

# Default to all packages in category
if [[ -z ${PACKAGES} ]]; then
	for i in *; do
		[[ -d ${i} ]] && PACKAGES="${PACKAGES} ${i%/}"
	done
fi

# Tag on trailing slashes if needed
if [[ ${ROOT:$((${#ROOT}-1)):1} != / ]]; then
	ROOT="${ROOT}/"
fi
if [[ ${CATEGORY:$((${#CATEGORY}-1)):1} != / ]]; then
	CATEGORY="${CATEGORY}/"
fi

debug() {
	if [[ ${DEBUG} -eq 1 ]]; then
		echo "Variable settings:"
		echo "  MESSAGE='${MESSAGE}'"
		echo "  ROOT=${ROOT}"
		echo "  PACKAGES=${PACKAGES}"
	fi
}

run() {
	[[ ${DEBUG} -eq 1 ]] && echo "$*"
	[[ ${COMMIT} -eq 1 ]] && eval "$*"
}

commit() {
	for PACKAGE in ${PACKAGES}; do
		for EBUILD_PATH in ${PACKAGE}/*.ebuild; do
			EBUILD=${EBUILD_PATH#*/}

			run cp ${EBUILD_PATH} ${ROOT}${CATEGORY}${PACKAGE}

			run pushd ${ROOT}${CATEGORY}${PACKAGE}
			run cvs up
			run cvs add ${EBUILD}
			if [[ $? -eq 0 ]]; then
				run ekeyword ~all ${EBUILD}
			fi
			run popd
		done

		run pushd ${ROOT}${CATEGORY}${PACKAGE}
		run ebuild ${EBUILD} digest
		run echangelog "'${MESSAGE}'"
		run repoman ci -m "'${MESSAGE}'"
		run popd
	done
}

debug
commit