#!/bin/bash

DISCOROOT=/var/disco
RSYNC=$(disco-param get disco/client/cmds/rsync || exit 1)
SERVERURI=$(disco-param get disco/server/uri || exit 1)
STORAGE=$(disco-param get disco/client/storage 2>/dev/null || echo "/var/disco/localstore")
mkdir -p ${STORAGE}

function init() {
    if [ "$1" == "" ]; then
	echo "Must enter a path to initialize" >&2
	exit 1
    fi
    mkdir -p $1/templates
    mkdir -p $1/scripts
    mkdir -p $1/files
    touch $1/requires
    mkdir -p $1/parameters/$(basename $1)
}

function fetch_params() {
    # Sometimes there's some shell escaping voodoo and rsync doesn't like the command args some people will pass it straight on
    # the command line; so we wrap it in a little bash script, and everyone's happy.
    echo ${RSYNC} --delete ${SERVERURI}::parameters/$(hostname)/* ${DISCOROOT}/parameters/$(hostname)/ > /tmp/$$.sh
    echo 'exit $?' >> /tmp/$$.sh
    /bin/bash /tmp/$$.sh
    RETVAL=$?
    rm -f /tmp/$$.sh
    exit $RETVAL
}

function fetch() {
    if [ "$1" == "" ]; then
	echo "Must pass a module name to fetch"
	exit 1
    fi
    rm -rf ${STORAGE}/${1}
    # Sometimes there's some shell escaping voodoo and rsync doesn't like the command args some people will pass it straight on
    # the command line; so we wrap it in a little bash script, and everyone's happy.
    echo ${RSYNC} ${SERVERURI}::${1}/files/* / > /tmp/$$.sh
    echo ${RSYNC} --delete ${SERVERURI}::${1}/requires ${SERVERURI}::${1}/scripts ${SERVERURI}::${1}/parameters ${SERVERURI}::${1}/templates ${STORAGE}/${1} >> /tmp/$$.sh
    echo 'exit $?' >> /tmp/$$.sh
    /bin/bash /tmp/$$.sh
    RETVAL=$?
    rm -f /tmp/$$.sh
    exit $RETVAL
}

function requires()
{
    if [ "$1" == "" ]; then
	echo "Must pass a module name for requirements"
	exit 1
    fi
    cat ${STORAGE}/${1}/requires | sed s/"^"/"${1} "/g
}

function exec() {
    RETVAL=0
    for file in $(find ${STORAGE}/${1}/scripts/ -type f | sort -u)
    do
	NOOP="$NOOP" disco-sh-exec $file /tmp/${1}-$(basename $file)
	RETVAL=$(expr $RETVAL + $?)
    done
}

function template() {
    if [ "$1" == "" ]; then
	echo "Must pass a module name to template"
	exit 1
    fi
    DESTROOT=""
    if [ "$NOOP" != "" ]; then
	DESTROOT=/var/disco/testfs/noop
    fi
    cd ${STORAGE}/${1}/templates
    for file in $(find . -type f | sed s/"^\.\/"//g)
    do
	NOOP=true disco-sh-exec $(pwd)/$file /$file >/tmp/$$.tmpl
	if [ $? -eq 0 ]; then
	    mkdir -p $(dirname ${DESTROOT}/$file)
	    mv /tmp/$$.tmpl ${DESTROOT}/$file
	else
	    echo "error: template ${1}/templates/$file failed, not replacing /$file"
	    exit 1
	fi
    done
    exit 0
}

$1 $2