#!/bin/bash
################################################################################
#    HPCC SYSTEMS software Copyright (C) 2018 HPCC Systems®.
#
#    Licensed 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.
################################################################################

#------------------------------------------------------------------------------
#                       Common Function
#------------------------------------------------------------------------------

###<REPLACE>###

DEBUG=${DEBUG:-NO_DEBUG}

source ${INSTALL_DIR}/etc/init.d/hpcc_common

createConf ()
{
    dir_name=$(basename ${INSTALL_DIR})
    awk -f ${reg_path}/regex.awk -v NEW_ENVFILE=$1 -v NEW_PORT=$2 -v NEW_CONFFILE=$3< ${path}/etc/${dir_name}/config2mgr/esp.xml >${runtime}/${compName}/esp.xml
}


cleanup ()
{
    echo "Exiting config2mgr"
    PIDPATH=${pid}/${compName}_init.pid
    stopcmd="${START_STOP_DAEMON} -K -p $PIDPATH"
    eval $stopcmd
    sleep 2
    cleanupRuntimeEnvironment
    exit
}


control_c ()
{
    echo "Ctrl-c was hit. Exiting the process"
    cleanup
    exit
}

print_usage ()
{
    echo >&2 "Usage : $0 <full path for env file> <port> <full path for conf file>
              or $0 (will use default files and default port number)"
    exit 0
}

set_environmentvars

exec_script_path=${path}/bin
reg_path=${path}/sbin

compName=config2mgr
compPath=${runtime}/${compName}

[[ ! -w "${CONFIG_DIR}" ]] && is_root

# Trapping keyboard interrupt  control-c
trap control_c SIGINT

# Setting up Environment variables
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${path}/lib
export PATH=${PATH}:${runtime}/bin:${path}/sbin

# Creating runtime environment for config2mgr
createRuntime

logFile=${log}/${compName}/${compName}.log

initPidFile=${pid}/${compName}_init.pid
compPidFile=${pid}/${compName}.pid
lockFile=${lock}/${compName}/${compName}.lock
defaultEnv=0

# Checking input arguments
if [ $# -eq 3 ]; then
    filename=$1
    portnum=$2
    conffile=$3
    echo "<filename> = ${filename}"
    echo "<portnumber> = ${portnum}"
    echo "<LocalEnvConfFile> = ${conffile}"
    #checking where files exists or not
    if [ ! -e ${filename} ] || [ ! -e ${conffile} ]
    then
       echo "File ${filename} or ${conffile} does not exists"
       exit
    fi
elif [ $# -eq 0 ]; then
    defaultEnv=1
    filename="${sourcedir}/${environment}"
    portnum="8020"
    conffile="${configs}/environment.conf"
    echo "Using default filename ${sourcedir}/${environment} and default port \"8020\""
    if [ ! -d ${sourcedir} ];
    then
       #creating source directory if not present
       createDir ${sourcedir}
       cp ${configs}/${environment} ${sourcedir} > /dev/null 2<&1
       chmod 755 ${sourcedir}/${environment}
       chown -R ${user}:${group} ${sourcedir}
    else
        if [ ! -e ${filename} ];
        then
            if [ ${DEBUG:-NO_DEBUG} != "NO_DEBUG" ]; then
                echo "Default environment file does not exists, copying from ${configs}"
            fi
            cp ${configs}/${environment} ${sourcedir}/environment.xml > /dev/null 2<&1
            chmod 755 ${sourcedir}/environment.xml
            chown -R ${user}:${group} ${sourcedir}
        fi
    fi
else
    print_usage
fi

createConf "${filename}" "${portnum}" "${conffile}"
chown ${user}:${group} ${conffile}

# Sanity Check for previous instances of config2. This code also takes care if configmgr script/configesp is not running and it killed by kill command

check_status ${initPidFile} ${lockFile} ${compPidFile} 0
RCSTAT=$?

if [ ${RCSTAT} -eq 0 ]; then
    checkPid ${initPidFile}
    echo "Config2mgr is already running with Pid $__pidValue"
    exit 0
else
    cleanupRuntimeEnvironment
fi

#-----------------------------------------------------------
# Actual Processing begins
#-----------------------------------------------------------
cd ${runtime}/${compName}

#start configesp
EXEC_COMMAND="${exec_script_path}/init_configesp >> $logFile 2>&1"
startcmd="${START_STOP_DAEMON} -S -p ${initPidFile} -c ${user}:${group} -d ${runtime}/${compName} -m -x ${EXEC_COMMAND} -b"
eval ${startcmd}
started=$?

# Creating a Lock
lock $lockFile

if [ ${DEBUG:-NO_DEBUG} != "NO_DEBUG" ]; then
    echo $startcmd
    echo "configesp status = $started"
fi

echo -n "Verifying config2 startup ..."
sleep 5

check_status ${initPidFile} ${lockFile} ${compPidFile} 1
RCSTAT=$?

if [ ${RCSTAT} -ne 0 ];then
   echo "Failure"
   cleanup
else
    echo " Success"
    echo "Exit by pressing ctrl-c..."
    while :
        check_status ${initPidFile} ${lockFile} ${compPidFile} 1
        if [ $? -ne 0 ] ;
        then
            if [ "${DEBUG}" != "NO_DEBUG" ];
            then
                 echo "Init_configesp/Configesp is not running, hence shutting down configmgr script"
            fi
            kill -2 $$ > /dev/null 2>&1
        fi
        trap control_c SIGINT
    do
        sleep 1
    done
fi