#!/bin/bash
# sunrise-commit - Automates the Gentoo Sunrise Overlay commit process
# Released into the public domain
# $Id$

source /sbin/functions.sh

BLUE=$BRACKET
BOLD=$'\e[0;01m'
DARKGREEN=$'\e[32m'
GREEN=$GOOD
LIGHTBLUE=$HILITE
RED=$BAD
YELLOW=$WARN

commit_category="$(echo `pwd` | awk -F/ '{ print $(NF-1) }')"
commit_package="$(echo `pwd` | awk -F/ '{ print $NF }')"
commit_status="$(echo `svn status`)"
num_new_dirs=0
opt_changelog=0
opt_noformat=0
opt_norepoman=0
opt_noupdate=0
opt_quiet=0
opt_verbose=0

changelog_append() {
	if [[ "$opt_changelog" == "1" ]] ; then
		ebegin "Appending/creating ChangeLog"
		echangelog "$*"
		eend $?
	fi
}

create_digests() {
	if [[ "$(ls)" =~ '\.ebuild' ]] ; then
		ebegin "Digesting ebuilds"
		for i in *.ebuild ; do
			ebuild $i digest
		done
		eend $?
	fi
}

repoman_check() {
	if [[ "$opt_norepoman" == "0" ]] ; then
		commit_status="$(echo `svn status`)"
		if [[ "$commit_status" =~ '\.ebuild' ]] ; then
			ebegin "Running repoman"
			export PORTDIR_OVERLAY="$(dirname $(dirname $(pwd)))"
			repoman
			eend $?
		fi
	fi
}

svn_add() {
	ebegin "Adding local changes to working copy"
	if [[ "$opt_verbose" == "1" ]] ; then
		svn add * --force
	else
		svn add * --force -q
	fi
	eend $?
}

svn_commit() {
	local commit_message="$*"

	for (( i=num_new_dirs ; i > 0 ; i-- )) ; do
		cd ..
	done

	if [[ "$opt_noformat" == "0" ]] ; then
		commit_status="$(echo `svn status`)"
		if [[ "$commit_status" =~ '\.ebuild' ]] ; then
			commit_message="${commit_category}/${commit_package}: ${commit_message}"
		else
			commit_message="${commit_package}/$(echo $commit_status | awk '{ print $2 }'): ${commit_message}"
		fi
	fi

	echo
	echo "${DARKGREEN}The following local changes will be committed to the repository:${NORMAL}"
	echo
	svn status
	echo
	echo "${DARKGREEN}The following commit message will be used:${NORMAL}"
	echo
	echo "$commit_message"

	if [[ "$opt_quiet" == "0" ]] ; then
		echo
		echo -n "${BOLD}Commit changes?${NORMAL} [${GREEN}Yes${NORMAL}/${RED}No${NORMAL}] "
		read choice
		echo

		case "$choice" in
			y*|Y*|"")
				;;

			*)
				echo "Quitting."
				echo
				return 1 ;;
		esac
	fi

	ebegin "Committing working copy to repository"
	svn commit -m "$commit_message"
	eend $?
}

svn_up() {
	if [[ "$opt_noupdate" == "0" ]] ; then
		while [[ "$(echo `svn status`)" =~ "A.+? \." ]] ; do
			pushd .. >/dev/null
			(( num_new_dirs++ ))
		done
		ebegin "Updating working copy to latest version from repository"
		if [[ "$opt_verbose" == "1" ]] ; then
			svn update || set $?  
		else
			svn update -q || set $?
		fi
		eend ${1:-0}
		for (( i=$num_new_dirs ; i > 0 ; i-- )) ; do
	   		popd >/dev/null
		done
	fi
	return ${1:-0}
}

usage() {
cat << EOF
${BOLD}Usage:${NORMAL} ${LIGHTBLUE}sunrise-commit${NORMAL} [ ${GREEN}options${NORMAL} ] ${BLUE}message${NORMAL}

${GREEN}options${NORMAL}:
  ${BOLD}--changelog, -c${NORMAL}  Create a ChangeLog entry using ${BLUE}message${NORMAL}
  ${BOLD}--help, -h${NORMAL}       Show help
  ${BOLD}--noformat, -m${NORMAL}   Disable automatic formatting of ${BLUE}message${NORMAL}
  ${BOLD}--norepoman, -p${NORMAL}  Skip repoman check
  ${BOLD}--noupdate, -d${NORMAL}   Don't update from repository before committing
  ${BOLD}--quiet, -q${NORMAL}      Don't ask for confirmation
  ${BOLD}--verbose, -v${NORMAL}    Show detailed information during commit

${BLUE}message${NORMAL}:
  Commit message describing changes and listing names/emails of anyone (other
  than the commiter) who contributed.
EOF
	exit ${1:-0}
}

[[ -z "$1" ]] && usage 1

while [[ $# > 0 ]] ; do
	case "$1" in
		--changelog|-c)
			if [[ -z "$ECHANGELOG_USER" ]] ; then
				echo "!!! Error: --changelog option requires ECHANGELOG_USER to be set:"
				echo "!!!   export ECHANGELOG_USER=\"Your Name <your@mail.org>\""
				exit 1
			fi
			opt_changelog=1
			shift ;;

		--help|-h)
			usage ;;

		--noformat|-m)
			opt_noformat=1
			shift ;;

		--norepoman|-p)
			opt_norepoman=1
			shift ;;

		--noupdate|-d)
			opt_noupdate=1
			shift ;;

		--quiet|-q)
			opt_quiet=1
			shift ;;

		--verbose|-v)
			opt_verbose=1
			shift ;;

		-*)
   			echo "!!! Error: Unknown option ${1}. See: sunrise-commit -h"
   			exit 1 ;;

		*)
			break ;;
	esac
done

if [[ -z "$*" ]] ; then
	echo "!!! Error: You must supply a commit message. See: sunrise-commit -h"
	exit 1
fi

if [[ -z "$commit_status" ]] ; then
	ewarn "No changes found in current directory tree."
	exit 1
fi

svn_up || exit $?
create_digests || exit $?
changelog_append "$*" || exit $?
svn_add || exit $?
repoman_check || exit $?
svn_commit "$*" || exit $?