#!/bin/bash
#
# Script to stop the service and uninstall TDengine, but retain the config, data and log files.

set -e
#set -x

verMode=edge

RED='\033[0;31m'
GREEN='\033[1;32m'
NC='\033[0m'

#install main path
install_main_dir="/usr/local/taos"
data_link_dir="/usr/local/taos/data"
log_link_dir="/usr/local/taos/log"
cfg_link_dir="/usr/local/taos/cfg"
bin_link_dir="/usr/bin"
lib_link_dir="/usr/lib"
lib64_link_dir="/usr/lib64"
inc_link_dir="/usr/include"
install_nginxd_dir="/usr/local/nginxd"

# v1.5 jar dir
#v15_java_app_dir="/usr/local/lib/taos"

service_config_dir="/etc/systemd/system"
taos_service_name="taosd"
taosadapter_service_name="taosadapter"
tarbitrator_service_name="tarbitratord"
nginx_service_name="nginxd"
csudo=""
if command -v sudo > /dev/null; then
    csudo="sudo "
fi

initd_mod=0
service_mod=2
if pidof systemd &> /dev/null; then
    service_mod=0
elif $(which service &> /dev/null); then
    service_mod=1
    service_config_dir="/etc/init.d"
    if $(which chkconfig &> /dev/null); then
         initd_mod=1
    elif $(which insserv &> /dev/null); then
        initd_mod=2
    elif $(which update-rc.d &> /dev/null); then
        initd_mod=3
    else
        service_mod=2
    fi
else
    service_mod=2
fi

function kill_taosadapter() {
  pid=$(ps -ef | grep "taosadapter" | grep -v "grep" | awk '{print $2}')
  if [ -n "$pid" ]; then
    ${csudo}kill -9 $pid   || :
  fi
}

function kill_taosd() {
  pid=$(ps -ef | grep "taosd" | grep -v "grep" | awk '{print $2}')
  if [ -n "$pid" ]; then
    ${csudo}kill -9 $pid   || :
  fi
}

function kill_tarbitrator() {
  pid=$(ps -ef | grep "tarbitrator" | grep -v "grep" | awk '{print $2}')
  if [ -n "$pid" ]; then
    ${csudo}kill -9 $pid   || :
  fi
}
function clean_bin() {
    # Remove link
    ${csudo}rm -f ${bin_link_dir}/taos        || :
    ${csudo}rm -f ${bin_link_dir}/taosd       || :
    ${csudo}rm -f ${bin_link_dir}/taosadapter || :
    ${csudo}rm -f ${bin_link_dir}/taosdemo    || :
    ${csudo}rm -f ${bin_link_dir}/taosdump    || :
    ${csudo}rm -f ${bin_link_dir}/rmtaos      || :
    ${csudo}rm -f ${bin_link_dir}/tarbitrator || :
    ${csudo}rm -f ${bin_link_dir}/set_core    || :
    ${csudo}rm -f ${bin_link_dir}/run_taosd.sh || :
}

function clean_lib() {
    # Remove link
    ${csudo}rm -f ${lib_link_dir}/libtaos.*      || :
    ${csudo}rm -f ${lib64_link_dir}/libtaos.*    || :
    #${csudo}rm -rf ${v15_java_app_dir}           || :
}

function clean_header() {
    # Remove link
    ${csudo}rm -f ${inc_link_dir}/taos.h       || :
    ${csudo}rm -f ${inc_link_dir}/taosdef.h    || :
    ${csudo}rm -f ${inc_link_dir}/taoserror.h  || :
}

function clean_config() {
    # Remove link
    ${csudo}rm -f ${cfg_link_dir}/*            || :
}

function clean_log() {
    # Remove link
    ${csudo}rm -rf ${log_link_dir}    || :
}

function clean_service_on_systemd() {
    taosd_service_config="${service_config_dir}/${taos_service_name}.service"
    if systemctl is-active --quiet ${taos_service_name}; then
        echo "TDengine taosd is running, stopping it..."
        ${csudo}systemctl stop ${taos_service_name} &> /dev/null || echo &> /dev/null
    fi
    ${csudo}systemctl disable ${taos_service_name} &> /dev/null || echo &> /dev/null
    ${csudo}rm -f ${taosd_service_config}

    taosadapter_service_config="${service_config_dir}/taosadapter.service"
    if systemctl is-active --quiet ${taosadapter_service_name}; then
        echo "TDengine taosAdapter is running, stopping it..."
        ${csudo}systemctl stop ${taosadapter_service_name} &> /dev/null || echo &> /dev/null
    fi
    ${csudo}systemctl disable ${taosadapter_service_name} &> /dev/null || echo &> /dev/null
    [ -f ${taosadapter_service_config} ] && ${csudo}rm -f ${taosadapter_service_config}

    tarbitratord_service_config="${service_config_dir}/${tarbitrator_service_name}.service"
    if systemctl is-active --quiet ${tarbitrator_service_name}; then
        echo "TDengine tarbitrator is running, stopping it..."
        ${csudo}systemctl stop ${tarbitrator_service_name} &> /dev/null || echo &> /dev/null
    fi
    ${csudo}systemctl disable ${tarbitrator_service_name} &> /dev/null || echo &> /dev/null
    ${csudo}rm -f ${tarbitratord_service_config}

    if [ "$verMode" == "cluster" ]; then
        nginx_service_config="${service_config_dir}/${nginx_service_name}.service"
        if [ -d ${install_nginxd_dir} ]; then
            if systemctl is-active --quiet ${nginx_service_name}; then
                echo "Nginx for TDengine is running, stopping it..."
                ${csudo}systemctl stop ${nginx_service_name} &> /dev/null || echo &> /dev/null
            fi
            ${csudo}systemctl disable ${nginx_service_name} &> /dev/null || echo &> /dev/null
            ${csudo}rm -f ${nginx_service_config}
        fi
    fi
}

function clean_service_on_sysvinit() {
    #restart_config_str="taos:2345:respawn:${service_config_dir}/taosd start"
    #${csudo}sed -i "\|${restart_config_str}|d" /etc/inittab || :

    if pidof taosd &> /dev/null; then
        echo "TDengine taosd is running, stopping it..."
        ${csudo}service taosd stop || :
    fi

    if pidof tarbitrator &> /dev/null; then
        echo "TDengine tarbitrator is running, stopping it..."
        ${csudo}service tarbitratord stop || :
    fi

    if ((${initd_mod}==1)); then
      if [ -e ${service_config_dir}/taosd ]; then
        ${csudo}chkconfig --del taosd || :
      fi
      if [ -e ${service_config_dir}/tarbitratord ]; then
        ${csudo}chkconfig --del tarbitratord || :
      fi
    elif ((${initd_mod}==2)); then
      if [ -e ${service_config_dir}/taosd ]; then
        ${csudo}insserv -r taosd || :
      fi
      if [ -e ${service_config_dir}/tarbitratord ]; then
        ${csudo}insserv -r tarbitratord || :
      fi
    elif ((${initd_mod}==3)); then
      if [ -e ${service_config_dir}/taosd ]; then
        ${csudo}update-rc.d -f taosd remove || :
      fi
      if [ -e ${service_config_dir}/tarbitratord ]; then
        ${csudo}update-rc.d -f tarbitratord remove || :
      fi
    fi

    ${csudo}rm -f ${service_config_dir}/taosd || :
    ${csudo}rm -f ${service_config_dir}/tarbitratord || :

    if $(which init &> /dev/null); then
        ${csudo}init q || :
    fi
}

function clean_service() {
    if ((${service_mod}==0)); then
        clean_service_on_systemd
    elif ((${service_mod}==1)); then
        clean_service_on_sysvinit
    else
        # must manual stop taosd
        kill_taosadapter
        kill_taosd
        kill_tarbitrator
    fi
}

# Stop service and disable booting start.
clean_service
# Remove binary file and links
clean_bin
# Remove header file.
clean_header
# Remove lib file
clean_lib
# Remove link log directory
clean_log
# Remove link configuration file
clean_config
# Remove data link directory
${csudo}rm -rf ${data_link_dir}    || :

${csudo}rm -rf ${install_main_dir}
${csudo}rm -rf ${install_nginxd_dir}
if [[ -e /etc/os-release ]]; then
  osinfo=$(awk -F= '/^NAME/{print $2}' /etc/os-release)
else
  osinfo=""
fi

if echo $osinfo | grep -qwi "ubuntu" ; then
#  echo "this is ubuntu system"
   ${csudo}dpkg --force-all  -P tdengine > /dev/null 2>&1 || :
elif echo $osinfo | grep -qwi "debian" ; then
#  echo "this is debian system"
   ${csudo}dpkg --force-all  -P tdengine > /dev/null 2>&1 || :
elif  echo $osinfo | grep -qwi "centos" ; then
#  echo "this is centos system"
  ${csudo}rpm -e --noscripts tdengine > /dev/null 2>&1 || :
fi

echo -e "${GREEN}TDengine is removed successfully!${NC}"
echo