#!/bin/bash
# Create a Drupal installation profile
#
# Copyright (C) 2017  Antonio Ospite <ao2@ao2.it>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

usage() {
  cat <<EOF
usage: drin $(basename $0 .sh) [-h|--help] <title> <machine_name>

Create an installation profile from the installed project.

Options:
  -h, --help          display this usage message and exit
EOF
}

while [ $# -gt 0 ];
do
  case "$1" in
    -h|--help)
      usage
      exit 0
      ;;
    -*)
      echo "Error: Unknown option '${1}'" 1>&2
      ;;
    *)
      break
      ;;
  esac
  shift
done


[ "x$1" = "x" -o  "x$2" = "x" ] && { usage 1>&2; exit 1; }

PROFILE_TITLE="$1"
PROFILE_MACHINE_NAME="$2"

WEB_ROOT="${PWD}/web"

[ -d "$WEB_ROOT" ] || { echo "Aborting, run this command from the Drupal project directory." 1>&2; exit 1; }

PROJECT_ROOT="$PWD"

DRUPAL_CONSOLE="${PROJECT_ROOT}/vendor/bin/drupal"
DRUSH="${PROJECT_ROOT}/vendor/bin/drush"

[ -x "$DRUSH" ] || { echo "Aborting, '$DRUSH' not available." 1>&2; exit 1; }
[ -x "$DRUPAL_CONSOLE" ] || { echo "Aborting, '$DRUPAL_CONSOLE' not available." 1>&2; exit 1; }

[ -d "${PROJECT_ROOT}/${PROFILE_MACHINE_NAME}" ] && { echo "Aborting, ${PROJECT_ROOT}/${PROFILE_MACHINE_NAME} already exists." 1>&2; exit 1; }

pushd "$WEB_ROOT"

# The list of modules and themes could also be obtained by exporting the
# configuration first and then looking at: config/install/core.extension.yml
# like this:
#
#  sed -e '/module:/,/^[^ ]/!d;//d' -e 's/^[ ]*\(.*\):.*$/\1/' config/install/core.extension.yml
#
# or
#
#  $DRUPAL_CONSOLE yaml:get:value "$PWD/$PROFILE_MACHINE_NAME/config/install/core.extension.yml" dependencies
#
# However getting them before exporting the configuration and generating the
# profile is cleaner.
#
ENABLED_MODULES="$($DRUSH pm-list --type=module --status=enabled --pipe | tr '\n' ',')"
ENABLED_THEMES="$($DRUSH pm-list --type=theme --status=enabled --pipe | tr '\n' ',')"

rm -rf "${WEB_ROOT}/profiles/$PROFILE_MACHINE_NAME"
$DRUPAL_CONSOLE generate:profile \
  --profile="$PROFILE_TITLE" \
  --machine-name="$PROFILE_MACHINE_NAME" \
  --description="Drupal installation profile for $PROFILE_TITLE" \
  --dependencies=$ENABLED_MODULES \
  --themes=$ENABLED_THEMES \
  --no-interaction
cp -a "${WEB_ROOT}/profiles/${PROFILE_MACHINE_NAME}" "$PROJECT_ROOT"

# Basically do what's suggested in the "Configuration" section here:
# https://www.drupal.org/docs/8/creating-distributions/how-to-write-a-drupal-8-installation-profile
$DRUPAL_CONSOLE config:export --directory="${PROJECT_ROOT}/${PROFILE_MACHINE_NAME}/config/install" --remove-uuid --remove-config-hash
rm "${PROJECT_ROOT}/${PROFILE_MACHINE_NAME}/config/install/core.extension.yml"

# The reference to the core version could be removed, but this is not strictly necessary
#find "${PROJECT_ROOT}/${PROFILE_MACHINE_NAME}/config/install" -type f -exec sed -i -e '/^_core: {  }/d' {} \;

# Since the profile generated by `$DRUPAL_CONSOLE generate:profile` calls in
# the standard profile, some duplicated config files could be removed in the
# new profile, but that's not strictly necessary either.
#fdupes -f -1 "${WEB_ROOT}/core/profiles/standard/config/install/" "${PROJECT_ROOT}/${PROFILE_MACHINE_NAME}/config/install/" | xargs rm

# Export the default content if the default_content module is there
if echo $ENABLED_MODULES | grep -q default_content;
then
  $DRUSH default-content-export-references --folder="${PROJECT_ROOT}/${PROFILE_MACHINE_NAME}/content" node
fi

popd