#!/bin/bash
#
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#

DRYRUN_DOCS="$1"
FULLRUN_DOCS="$2"

pushd "$(dirname $0)/../.." > /dev/null

if [ "${DRYRUN_DOCS}" != "*" ]; then

  if [ ! -f bin/gremlin.sh ]; then
    echo "Gremlin REPL is not available. Cannot preprocess AsciiDoc files."
    popd > /dev/null
    exit 1
  fi

  for daemon in "NameNode" "DataNode" "ResourceManager" "NodeManager"
  do
    running=`jps | cut -d ' ' -f2 | grep -c ${daemon}`
    if [ ${running} -eq 0 ]; then
      echo "Hadoop is not running, be sure to start it before processing the docs."
      exit 1
    fi
  done

  netstat -an | awk '{print $4}' | grep -o '[0-9]*$' | grep '\b8182\b' > /dev/null && {
    echo "The port 8182 is required for Gremlin Server, but it is already in use. Be sure to close the application that currently uses the port before processing the docs."
    exit 1
  }

  if [ -e /tmp/tinkergraph.kryo ]; then
    echo "The file '/tmp/tinkergraph.kryo' is required by the pre-processor, be sure to delete it before processing the docs."
    exit 1
  fi
fi

function directory {
  d1=`pwd`
  cd $1
  d2=`pwd`
  cd $d1
  echo "$d2"
}

mkdir -p target/postprocess-asciidoc/tmp
mkdir -p target/postprocess-asciidoc/logs
cp -R docs/{static,stylesheets} target/postprocess-asciidoc/

TP_HOME=`pwd`
CONSOLE_HOME=`directory "${TP_HOME}/gremlin-console/target/apache-tinkerpop-gremlin-console-*-standalone"`
PLUGIN_DIR="${CONSOLE_HOME}/ext"
TP_VERSION=$(cat pom.xml | grep -A1 '<artifactId>tinkerpop</artifactId>' | grep -o 'version>[^<]*' | grep -o '>.*' | cut -d '>' -f2 | head -n1)
TMP_DIR="/tmp/tp-docs-preprocessor"

mkdir -p "${TMP_DIR}"

HISTORY_FILE=".gremlin_groovy_history"
[ -f ~/${HISTORY_FILE} ] && cp ~/${HISTORY_FILE} ${TMP_DIR}

pushd gremlin-server/target/apache-tinkerpop-gremlin-server-*-standalone > /dev/null
bin/gremlin-server.sh conf/gremlin-server-modern.yaml > ${TP_HOME}/target/postprocess-asciidoc/logs/gremlin-server.log 2>&1 &
GREMLIN_SERVER_PID=$!
popd > /dev/null

function cleanup() {
  echo -ne "\r\n\n"
  docs/preprocessor/uninstall-plugins.sh "${CONSOLE_HOME}" "${TMP_DIR}"
  [ -f ${TMP_DIR}/plugins.txt.orig ] && mv ${TMP_DIR}/plugins.txt.orig ${CONSOLE_HOME}/ext/plugins.txt
  find ${TP_HOME}/docs/src/ -name "*.asciidoc.groovy" | xargs rm -f
  [ -f ${TMP_DIR}/${HISTORY_FILE} ] &&  mv ${TMP_DIR}/${HISTORY_FILE} ~/
  rm -rf ${TMP_DIR}
  kill ${GREMLIN_SERVER_PID} &> /dev/null
  popd &> /dev/null
}

trap cleanup EXIT

if [ "${DRYRUN_DOCS}" != "*" ] || [ ! -z "${FULLRUN_DOCS}" ]; then

  # install plugins
  echo
  echo "=========================="
  echo "+   Installing Plugins   +"
  echo "=========================="
  echo
  cp ${CONSOLE_HOME}/ext/plugins.txt ${TMP_DIR}/plugins.txt.orig
  docs/preprocessor/install-plugins.sh "${CONSOLE_HOME}" "${TP_VERSION}" "${TMP_DIR}"

  if [ $? -ne 0 ]; then
    exit 1
  else
    echo
  fi

fi

# process *.asciidoc files
COLS=${COLUMNS}
[[ ${COLUMNS} -lt 240 ]] && stty cols 240

tput rmam

echo
echo "============================"
echo "+   Processing AsciiDocs   +"
echo "============================"

ec=0
for subdir in $(find "${TP_HOME}/docs/src/" -name index.asciidoc | xargs -n1 dirname)
do
  find "${subdir}" -maxdepth 1 -name "*.asciidoc" |
       xargs -n1 basename |
       xargs -n1 -I {} echo "echo -ne {}' '; (grep -n {} ${subdir}/index.asciidoc || echo 0) | head -n1 | cut -d ':' -f1" | /bin/bash | sort -nk2 | cut -d ' ' -f1 |
       xargs -n1 -I {} echo "${subdir}/{}" |
       xargs -n1 ${TP_HOME}/docs/preprocessor/preprocess-file.sh "${CONSOLE_HOME}" "${DRYRUN_DOCS}" "${FULLRUN_DOCS}"

  ps=(${PIPESTATUS[@]})
  for i in {0..7}; do
    ec=${ps[i]}
    [ ${ec} -eq 0 ] || break
  done
  [ ${ec} -eq 0 ] || break
done

tput smam
[[ "${COLUMNS}" != "" ]] && stty cols ${COLS}

rm -rf /tmp/tinkergraph.kryo

[ ${ec} -eq 0 ] || exit 1

echo