#!/bin/bash

set -e

topdir="$1"
[ -n "$topdir" -a -d "$topdir" ] || exit 1
mirror="$topdir/mirror"

mkdir -p "$mirror"

STAMP=$(date "+%Y%m%d%H%M")
new="$mirror/$STAMP"
mkdir $new

if lockfile -! -l 3600 -r2 -300 "$mirror/mirror.lock"
then
    echo "couldn't aquire mirror.lock in due time"
    exit 1;
fi

mkdir -p "$new/cache"
chmod 777 "$new/cache"

cd "$new"
ln -f "$topdir/config.sh"
ln -f "$topdir/README.Mirror"

mkdir -p "$new/bin"
cd "$new/bin"
ln -f "$topdir/bin/mod_perl-startup"

mkdir -p "$new/conf"
cd "$new/conf"
ln -f "$topdir/conf/apache.conf"

mkdir -p "$new/cgi-bin"
cd "$new/cgi-bin"
ln -f "$topdir/cgi-bin/dispatcher.pl"

for d in lib files templates po www
do
  mkdir -p "$new/$d"
  rsync -avH --link-dest "$topdir/$d" \
      --exclude '*.new' --exclude '*.sed.in' \
      --exclude '*.slices' --exclude '*~' \
      --exclude '*.lock' --exclude '*.ttc' --exclude 'logs/' \
      --exclude 'packages/*/' --exclude 'changelogs.*.dump' \
      --exclude 'changelogs.cache' --exclude 'changelogs/**/log' \
      --exclude "/auto" --exclude "/Search" --exclude "/perl" \
      --delete-excluded --delete-after \
      "$topdir/$d/" "$new/$d/"
done
LC_ALL=POSIX LANG=POSIX date -u > "$new/www/Pics/.trace"

ln -sfT $new $mirror/current
find $mirror -mindepth 1 -maxdepth 1 -not -name "${STAMP}" -type d -print0 \
	| xargs --no-run-if-empty -0 rm -rf

rm -f "$mirror/mirror.lock"