#!/bin/bash

log()
{
	echo $@
}

fatal()
{
	log $@
	exit 1
}

goodbye()
{
	rm -f $scm_status
}

check_scm()
{
	local p=$1
	if [ -d $p/.git ]; then
		log + checking git
		#git -C $p pull --no-edit || fatal "git pull failed, giving up"
		git -C $p status --porcelain | grep -v '^??' | grep -q . && {
			git -C $p status
			fatal "git in project \"$p\" has locally modified files, giving up"
		}
	else
		log + checking cvs 
		#cvs update -dP $p
		cvs status $p > $scm_status 2>&1 
		if [ $? != 0 ]; then
			cat $scm_status 
			fatal "\n======== cvs status failed in project \"$p\", giving up."
		fi 
		grep -qi "locally modified" $scm_status && \
			fatal "cvs copy in project \"$p\" has locally modified files, giving up"
		grep -qi "needs" $scm_status && \
			fatal "+ cvs copy in project \"$p\" is out-of-date, giving up"
	fi
}

ssh=ssh
[ "$CVS_RSH" ] && ssh="$CVS_RSH"
[ "$GIT_SSH" ] && ssh="$GIT_SSH"
ssh=`which $ssh`
[ -x "$ssh" ] || fatal "SSH executable \"$ssh\" not found"
[ "$JANWARE_USER" ] || JANWARE_USER=`whoami`
ssh="$ssh -l $JANWARE_USER"

for host in cvs.jannet.de git.jannet.de; do
	$ssh $host echo hallo >/dev/null 2>&1 || fatal "Can't ssh into host $host"
done

local_cvs_proj=`ls -d */CVS 2>/dev/null | sed 's%/[^/]*%%'`
local_git_proj=`ls -d */.git 2>/dev/null | sed 's%/[^/]*%%'`
remote_cvs_proj=`$ssh cvs.jannet.de find /home/jannet/arc/cvs/proj -maxdepth 1 -mindepth 1 -type d -executable -readable | sed 's%.*/%%'`
remote_git_proj=`$ssh git.jannet.de git-srv-admin.sh -j list-personal-projects`

date=`date +'%Y%m%d'`
myname=`basename $0`

trap goodbye EXIT INT QUIT KILL
scm_status=`mktemp /tmp/$myname""_XXXXXX`

for p in $local_cvs_proj; do
	[ -L $p ] && continue
	[ -d $p ] || continue
	echo $remote_cvs_proj | grep -q "\(^\| \)$p\($\| \)" && continue
	n=purged/cvs/$date/$p
	mkdir -p `dirname $n`
	echo "--------------- moving stale cvs project $p to $n"
	if ! make -C $p distclean; then echo "distclean failed, ignoring"; fi
	if ! make -C $p clean; then echo "clean failed, ignoring"; fi
	mv $p $n
	sed -i "/\/$p\// d" CVS/Entries
	purged="$purged $p"
done

[ -d old ] && mv old purged

[ "$purged" ] && {
	cp -p CVS/Entries CVS/Entries-$date-`date +'%H%M%S'`
}

for p in $purged; do
	sed -i "/D\/$p\/\/\/\// d" CVS/Entries
done

for p in $local_git_proj; do
	[ -L $p ] && continue
	[ -d $p ] || continue
	echo $remote_git_proj | grep -q "\(^\| \)$p\($\| \)" && continue
	check_scm $p
	n=purged/git/$date/$p
	mkdir -p `dirname $n`
	mv $p $n
	log "moving stale project \"$p\" to \"$n\""
done