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#!/bin/bash
#
# Setup subtrees.
#

# Parameters
DIRNAME="`dirname $0`"

# Usage
function usage {
  echo "Usage: $1 add-submodules <DIR>"
  exit $2
}

# Check for git-subtree
if ! which git-subtree &> /dev/null; then
  echo "fatal: please install git-subtree"
  exit 1
fi

# Set puppet folder
if [ -d "puppet" ]; then
  PUPPET_FOLDER="puppet"
else
  PUPPET_FOLDER="."
fi

# Get module list
repos="`grep = $DIRNAME/../.mrconfig | cut -d = -f 2 | cut -d ' ' -f 4`"

# Add subtrees
for repo in $repos; do
  module="`basename $repo .git | sed -e s/^puppet-//`"
  if [ ! -d "$PUPPET_FOLDER/modules/$module" ]; then
    echo "Processing puppet module $module..."
    git remote  add $module $repo
    git subtree add --prefix $PUPPET_FOLDER/modules/$module $module master --squash
  elif [ ! -d "modules/$module/.git" ]; then
    # The puppet module exists and is a subtree, so update it
    if ! git remote | grep -qe "^$module$"; then
      git remote add $module $repo
    fi

    # Update subtrees
    git fetch $module master
    git subtree pull --prefix $PUPPET_FOLDER/modules/$module $module master --squash
  fi
done