#!/bin/sh

myname=`basename $0`

usage()
{
	cat << EOT | sed 's/^	|//'
	|
	| $myname cmd [cmd-arguments] ...
	| 
	| commands are:
	| 
	|   create-personal-project name
	|   list-personal-projects
	|
EOT
	[ "$1" ] && exit $1
}

log()
{
	echo $@
}

err()
{
	echo $@ >&2
}

fatal()
{
	err $@
	exit 1
}

md()
{
	local dir=$1
	local mode=$2
	local owner=$3
	local group=$4

	[ -d $dir ] || {

		log "creating $dir as $owner.$group with mode $mode"
		/usr/bin/install -m $mode -o $owner -g $group -d $dir || {
			fatal "failed to create directory $dir"
		}
	}
}

# ----------------- commands
create_personal_project()
{
	[ -e $dir ] && fatal "$dir already exists"

	if [ "$UID" = 0 ]; then
		md /srv/git 750 root jannet
		md /srv/git/$id 750 root jannet
		md /srv/git/$id/proj 750 root jannet
		md /srv/git/$id/proj/$p 770 root $id
		exit 0
	fi

	/usr/bin/sudo $0 create-personal-project $p || fatal "failed to set root uid"
	cd $dir || fatal "failed to change to $dir"
	git init --bare || fatal "git init failed"
}

list_personal_projects()
{
	cd $pdir
	ls */HEAD | sed 's%/HEAD%%' 2>/dev/null
}

# ----------------- here we go
cmd=$1
shift

id=`whoami`
[ "$SUDO_UID" ] && {
	id=`/opt/ytools/bin/getpwuid $SUDO_UID | sed '/^name *=/ !d; s/^name *= *//'`
	[ "$id" ] || fatal "failed to find uid $SUDO_UID in user database"
}

p=$1
pdir=/srv/git/$id/proj
dir=$pdir/$p

case $cmd in
create-personal-project)
	create_personal_project "$@"
	exit 1
	;;
list-personal-projects)
	list_personal_projects "$@"
	;;
*)
	usage 1
	;;
esac