#!/bin/bash
#
# Install the Hydra Suite on multiple nodes.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program.  If not, see
# <http://www.gnu.org/licenses/>.

# Load
source $APP_BASE/lib/hydra/functions || exit 1
hydra_config_load

# Command line arguments
NODES="$*"

# Build node list
if [ -z "$NODES" ]; then
  NODES="`hydra $HYDRA nodes`"
fi

# Validation
if [ -z "$ORIGIN" ]; then
  ORIGIN="git://git.sarava.org/hydra.git"
fi

# Deploy
for node in $NODES; do
  echo "Installing to $node..."
  $HYDRA_CONNECT $node <<EOF
  ##### BEGIN REMOTE SCRIPT #####
  if ! which git &> /dev/null; then
    echo "Installing git..."
    sudo aptitude update
    sudo aptitude install git-core -y
  fi

  if [ ! -d /usr/local/hydra ]; then
    sudo git clone $ORIGIN /usr/local/hydra
    ( cd /usr/local/hydra ; sudo git reset --hard $COMMIT )
  else
    ( cd /usr/local/hydra ; sudo git pull ; sudo git reset --hard $COMMIT )
  fi

  # Update symlinks
  sudo ln -sf /usr/local/hydra/hydra  /usr/local/bin/hydra
  sudo ln -sf /usr/local/hydra/hydra  /usr/local/bin/hydractl
  sudo ln -sf /usr/local/hydra/hydras /usr/local/bin/hydras

  # Remove from old location
  # We keep hydra on /usr/local/bin as /usr/local/sbin might
  # not be available on $PATH when connecting to a remote system.
  sudo rm -f /usr/local/sbin/hydra
  sudo rm -f /usr/local/sbin/hydractl
  sudo rm -f /usr/local/sbin/hydras
  ##### END REMOTE SCRIPT #######
EOF
done