#!/bin/sh

set -e

if [ -z "$SWIFT_CONTAINER" ]; then
  echo Set SWIFT_CONTAINER
  exit 1;
fi

day=$1; shift

if [ -z "${day}" ]; then
   echo "specify date in format yy-mm-dd"
   exit 1
fi
compressed="/tmp/${day}.tgz"
dest=${1:-.}

if [ -n "$(ls -A $dest)" ]; then
    echo "destination directory $dest must be empty"
    exit 1
fi

echo "Downloading $pg_small3/base/${day}.tgz"
if ! swift download -o $compressed $SWIFT_CONTAINER "base/${day}.tgz" ; then
    echo "Failed to download base backup $compressed"
    exit 2
fi
tar xvzf $compressed
rm $compressed

cat > recovery.conf <<EOF
restore_command = 'backup-restore-wal %p %f'
EOF

echo "Done. Cross your fingers and start the DB now."