#!/bin/bash

LONG_DATE=`date +%Y%m%d%H%M%S`

TOMCAT_USER=tomcat6
TOMCAT_HOME=/usr/share/tomcat6
SOURCE_DIR=/usr/share/metacat-2.10.4

###############################################################################
# Install metacat war file
###############################################################################

## Stop tomcat
echo "Stopping Tomcat"
/etc/init.d/tomcat6 stop

## backup the old war file
if [ -e ${TOMCAT_HOME}/webapps/metacat.war ]
then
  echo "Backing up ${TOMCAT_HOME}/webapps/metacat.war to ${TOMCAT_HOME}/webapps/metacat.war.${LONG_DATE}"
  mv ${TOMCAT_HOME}/webapps/metacat.war ${TOMCAT_HOME}/webapps/metacat.war.${LONG_DATE}
fi  

## remove the knb application directory
if [ -d ${TOMCAT_HOME}/webapps/metacat ]
then
  echo "Removing the old metacat application directorties"
  rm -rf ${TOMCAT_HOME}/webapps/metacat
fi 

## copy the new war file into the webapps directory
echo copying new metacat.war file to ${TOMCAT_HOME}/webapps/metacat.war
cp ${SOURCE_DIR}/metacat.war ${TOMCAT_HOME}/webapps/metacat.war

## expand the war file
CURR_DIR=`pwd`

## make knb directory and extract metacat.war into it.
echo "Making knb application directory: ${TOMCAT_HOME}/webapps/metacat"
mkdir ${TOMCAT_HOME}/webapps/metacat
cd ${TOMCAT_HOME}/webapps/metacat

echo "extracting metacat.war into ${TOMCAT_HOME}/webapps/metacat"
jar -xvf ${TOMCAT_HOME}/webapps/metacat.war > /dev/null
chown -R ${TOMCAT_USER} ${TOMCAT_HOME}/webapps/metacat
echo cd to $CURR_DIR
cd $CURR_DIR

chmod -R  +x ${TOMCAT_HOME}/webapps/metacat/cgi-bin

###############################################################################
# Create Metacat External File Space
###############################################################################

## Create the /var/metacat directory
if [ ! -d /var/metacat ]
then
  echo "Making Metacat utility directory: /var/metacat"
  mkdir /var/metacat
fi

## Change the ownership of the /var/metacat directory to be the tomcat user.
echo "changing ownership of /var/metacat to ${TOMCAT_USER}"
chown -R ${TOMCAT_USER} /var/metacat

###############################################################################
# Configure Tomcat
###############################################################################

## Change ownership of the tomcat directories to be the tomcat user
echo "changing ownership of ${TOMCAT_HOME} to ${TOMCAT_USER}"
chown -R ${TOMCAT_USER} ${TOMCAT_HOME} 
echo "changing ownership of /var/lib/tomcat6 to ${TOMCAT_USER}"
chown -R ${TOMCAT_USER} /var/lib/tomcat6
echo "changing ownership of /etc/tomcat6 to ${TOMCAT_USER}"
chown -R ${TOMCAT_USER} /etc/tomcat6


###############################################################################
# Configure Apache
###############################################################################

## Stop apache
echo "Stopping Apache"
/etc/init.d/apache2 stop

## copy in jk.conf file
if [ -e /etc/apache2/mods-available/jk.conf ]
then 
  JK_CONF_DIFF=`diff ${SOURCE_DIR}/jk.conf /etc/apache2/mods-available/jk.conf`
  if [ "${JK_CONF_DIFF}" != "" ]
  then
    echo "Backing up /etc/apache2/mods-available/jk.conf to /etc/apache2/mods-available/jk.conf.${LONG_DATE}"
    mv /etc/apache2/mods-available/jk.conf /etc/apache2/mods-available/jk.conf.${LONG_DATE}
  fi
fi
echo "Copying jk.conf to /etc/apache2/mods-available/"
cp ${SOURCE_DIR}/jk.conf /etc/apache2/mods-available/

## copy in workers.properties file
if [ -e /etc/apache2/workers.properties ]
then 
  WORKERS_PROPS_DIFF=`diff ${SOURCE_DIR}/workers.properties /etc/apache2/workers.properties`
  if [ "${WORKERS_PROPS_DIFF}" != "" ]
  then
    echo "Backing up /etc/apache2/workers.properties to /etc/apache2/workers.properties.${LONG_DATE}"
    mv /etc/apache2/workers.properties /etc/apache2/workers.properties.${LONG_DATE}
  fi
fi
echo "Copying workers.properties to /etc/apache2/"
cp ${SOURCE_DIR}/workers.properties /etc/apache2/

## disable and then re-enable mod jk to pick up changes
echo "Refreshing Mod JK"
a2dismod jk
a2enmod jk

## copy in knb site file
if [ -e /etc/apache2/sites-available/metacat ]
then 
  KNB_SITE_DIFF=`diff ${SOURCE_DIR}/metacat /etc/apache2/sites-available/metacat`
  if [ "${KNB_SITE_DIFF}" != "" ]
  then
    echo "Backing up /etc/apache2/sites-available/metacat to /etc/apache2/sites-available/metacat.${LONG_DATE}"
    mv /etc/apache2/sites-available/metacat /etc/apache2/sites-available/metacat.${LONG_DATE}
  fi
fi
echo "Copying knb site file to /etc/apache2/sites-available/"
cp ${SOURCE_DIR}/metacat /etc/apache2/sites-available/

## enable knb site
echo "Enabling knb site"
a2dissite knb
a2ensite knb

###############################################################################
# Configure Postgres
###############################################################################

## modify pg_hba.conf
PG_HBA_IS_MODIFIED=`grep "metacat metacat" /etc/postgresql/8.3/main/pg_hba.conf`
if [ "${PG_HBA_IS_MODIFIED}" == "" ]
then
  echo "backing up /etc/postgresql/8.3/main/pg_hba.conf to /etc/postgresql/8.3/main/pg_hba.conf.${LONG_DATE}"
  cp /etc/postgresql/8.3/main/pg_hba.conf /etc/postgresql/8.3/main/pg_hba.conf.${LONG_DATE}

  echo "appending 'host metacat metacat 127.0.0.1 255.255.255.255 password' to /etc/postgresql/8.3/main/pg_hba.conf"
  echo "host metacat metacat 127.0.0.1 255.255.255.255 password" >> /etc/postgresql/8.3/main/pg_hba.conf
fi

## create metacat schema and user
echo "Creating metacat database schema"
su postgres -c "createdb metacat"

echo "Creating metacat user" 
su postgres -c "psql -c \"CREATE USER metacat WITH UNENCRYPTED PASSWORD 'metacat'\""

## Restart the postgres db
echo "Restarting postgres database"
/etc/init.d/postgresql-8.3 restart

###############################################################################
# Start Apache and Tomcat
###############################################################################

## Start Apache
/etc/init.d/apache2 start

## ugly hack to fix circular dependency bug that will keep tomcat
## from starting within this script
if [ ! -f /etc/java-1.5.0-sun/jvm.cfg ]; then
  temp_jvm_cfg=/etc/java-1.5.0-sun/jvm.cfg
  mkdir -p /etc/java-1.5.0-sun
  printf -- "-server KNOWN\n" > $temp_jvm_cfg
fi

## Start Tomcat
echo "starting Tomcat server"

#export JAVA_HOME=/usr/lib/jvm/java-1.5.0-sun
#/usr/share/tomcat6/bin/startup.sh

/etc/init.d/tomcat6 start
#chmod u+x ${SOURCE_DIR}/delay-tomcat-start
#${SOURCE_DIR}/delay-tomcat-start &