#!/bin/sh

shout() { echo "$0: $*" >&2; }
die() { shout "$*"; exit 111; }
try() { "$@" || die "cannot $*"; }

# Designed to fetch -RELEASE, -STABLE, and -CURRENT via cron
# (being used for crochet-freebsd builds)
#
# ALLCAPS variables below can be passed to this script as ENV at runtime, e.g.:
#   $ REL="9.2.1" thisprogram

# can run from cron easily,
# 1 5 * * *  USER  lockf -t 300 /tmp/fetchsrcs.lock /usr/local/bin/fetchsrcs /home/USER/srcs


logger "START: '$0 $*'"

if [ "${1}" != "" ] ; then
  _srcs="${1}"
else
  die "Need one path argument to continue, (where to put sources, e.g. ${HOME}/srcs )."
fi

# SVN mirror
# http://www5.us.freebsd.org/doc/handbook/svn-mirrors.html
MIRROR="${MIRROR:-https://svn0.us-east.FreeBSD.org}"

# the 3 mainline FreeBSD branches,
# RELEASE, STABLE, and CURRENT
REL="${REL:-9.2.0}"       # actual: base/release/9.2.0
STA="${STA:-10}"          # actual: base/stable/10
CUR="${CUR:-11}"          # actual: base/head (using version as nickname here)


# LOCAL PATHS
_localrel="${_srcs}/${REL}-RELEASE"
_localsta="${_srcs}/${STA}-STABLE"
_localcur="${_srcs}/${CUR}-CURRENT"

# REMOTE repo url paths
_reporel="${MIRROR}/base/release/${REL}"
_reposta="${MIRROR}/base/stable/${STA}"
_repocur="${MIRROR}/base/head"


## action

try mkdir -p "${_srcs}"

fetchbranch() {
# accepts args: remote, local
_remote="$1"
_local="$2"
if [ ! -d "${_local}" ] ; then          
  try cd "${_srcs}"   
  try svn checkout --non-interactive --quiet "${_remote}" "${_local}"
else
  try cd "${_local}"
  try svn cleanup --non-interactive "${_svnflags}"
    # a blunt hammer to make this script more reliable
  try svn update --non-interactive --quiet "${_svnflags}"
fi
}

fetchbranch "${_reporel}" "${_localrel}"
fetchbranch "${_reposta}" "${_localsta}"
fetchbranch "${_repocur}" "${_localcur}"

logger "FINISH: '$0 $*'"

true