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#!/bin/bash
#
# Update puppet modules
#
# 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

function hydra_module_update {
  # Command line arguments
  MODULE="$1"
  
  # Validation
  if [ -z "$MODULE" ]; then
    echo "Usage: hydra <hydra> module-update <module> [<module1> ... <moduleN>]"
    exit 1
  elif [ ! -d "$PUPPET/modules/$MODULE" ]; then
    echo "No such module $MODULE at $HYDRA puppet configuration."
    exit 1
  fi
  
  # Update the module
  (
    cd $PUPPET/modules/$MODULE

    # Ensure the submodule has a branch
    if git branch | head -1 | grep -q -E "no branch|detached"; then
      git checkout master
    fi

    git pull
  )
  
  # Verify the module
  if ! hydra $HYDRA module-verify $MODULE; then
    echo "ERROR: Updated module doesn't match hash, please verify and update manually."
    exit 1
  fi
  
  # Commit
  ( cd $PUPPET; git commit -a -m "Updating module $MODULE"; git push )
}

for module in $*; do
  echo "Updating module $module at puppet repository..."
  hydra_module_update $module
done