#!/bin/sh

log()
{
	echo $@
}

err()
{
	log $@
}

fatal()
{
	err $@
	exit 1
}

marker()
{
	log "# ============= $@"
}

config()
{
	# guess pdir
	pdir=`pwd`
	while [ `cat $pdir/CVS/Repository 2>/dev/null` != proj ]; do
		[ "$pdir" = / ] && fatal "didn't find \"proj\" in directory components"
		pdir=`dirname $pdir`
	done
	pdirs=`(cd $pdir; ls -d */.git | sed 's%/.git%%')`
}

# ------------- commands
run()
{(
	local d
	local cmd=$1
	shift
	config
	cd $pdir

	for d in $pdirs; do
		marker $d
		(cd $d; git $cmd "$@")
	done
)}

clone()
{(
	local p
	config
	cd $pdir
	local id=$PGIT_CLONE_FROM_USER
	local projects="$PGIT_CLONE_PROJECTS"
	[ "$id" ] || id=`whoami`
	[ "$projects" ] || projects=`$SSH git.jannet.de /opt/ytools/bin/git-srv-admin.sh -u $id -j list-personal-projects`
	for p in $projects; do
		[ -d $p ] && {
			marker "skipping existing $p"
			continue
		}
		marker "cloning $p"
		git clone ssh://$id@git.jannet.de/srv/git/$id/proj/$p
		(
			cd $p
			git submodule init
			git submodule update
		)
	done
)}

diff()
{(
	local d
	config
	cd $pdir
	for d in $pdirs; do
		marker $d
		(cd $d; git diff --src-prefix=a/$d/ --dst-prefix=b/$d/ "$@")
	done
)}

SSH=ssh
[ "$GIT_SSH" ] && SSH=$GIT_SSH

cmd=$1
shift
case $cmd in
	clone|diff)
		$cmd "$@"
		;;
	*)
		run $cmd "$@"
		;;
esac