#!/bin/bash
#
# Deploy configuration using puppet.
#

# Parameters
DIRNAME="`dirname $0`"
BASEDIR="$DIRNAME/.."

# Determine hostname
if [ ! -z "$1" ]; then
  FQDN="$1"
else
  FQDN="`cat /etc/hostname`"
fi

# Set manifest
PUPPET_MANIFEST="$BASEDIR/manifests/nodes/$FQDN.pp"
if [ ! -e "$PUPPET_MANIFEST" ]; then
  PUPPET_MANIFEST="$BASEDIR/manifests/nodes/default.pp"
fi

# Check manifest
if [ ! -e "$PUPPET_MANIFEST" ]; then
  echo "No manifest found for $FQDN"
  exit 1
fi

# Install dependencies
source $DIRNAME/dependencies

# Ensure additional dependencies are installed.
for package in $DEPLOY_DEPENDENCIES; do
  provision_package $package
done

# Parameters that needs dependencies installed
DIST="`facter lsbdistcodename`"

# Apply patches
if [ -d "$BASEDIR/puppet/files/patches/$DIST" ]; then
  (
  # Patches should be generated relativelly to the root folder
  cd /

  # Only apply if needed
  # Thanks https://unix.stackexchange.com/questions/55780/check-if-a-file-or-folder-has-been-patched-already
  for patch in `ls $BASEDIR/puppet/files/patches/$DIST`; do
    patch -p0 -N --dry-run --silent < $BASEDIR/puppet/files/patches/$DIST/$patch &> /dev/null
    # If the patch has not been applied then the $? which is the exit status
    # for last command would have a success status code = 0
    if [ "$?" == "0" ]; then
      # Apply the patch
      patch -p0 -N < $BASEDIR/puppet/files/patches/$DIST/$patch
    fi
  done
  )
fi

# Run puppet apply
PUPPET_OPTS="--confdir=$BASEDIR --modulepath=$BASEDIR/modules"
LC_ALL=C $SUDO puppet apply $PUPPET_OPTS $PUPPET_MANIFEST