#!/usr/bin/env bash

CUR_IFS="$IFS"

script_name="$(basename $(realpath $0))"
working_dir="$(dirname $(realpath $0))"

conf_file="$(dirname "${working_dir}")/conf/${script_name%%.*}.conf"

log_file="$(mktemp)"

backup_date=$(date +%Y-%m-%d-%H%M)

# =============
# --- Some Variable
# =============

right_tabstop=75


# =============
# --- Some functions
# =============

usage() {


   [[ -n  "$1" ]] && error "$1"


   [[ $terminal ]] && echo -e "
\033[1mUsage:\033[m

   $(basename $0) [OPTION [OPTION ..

\033[1mDescription\033[m

   Script restores a website from backup system.

\033[1mOptions\033[m

   -b
      Sets batch mode to true - no interaction will be made.

   -d <database-name>
      Name of database concerning to the restoring website.

   -h
      Prints this help.

   -s <server-name>
      The (backuped) server holding the production website.

   -t <YYYY-MM-DD>
      The backup date.

   -w <website>
      the website 

\033[1mFiles\033[m

   Configuration file: $conf_file

\033[1mExample:\033[m

   Restore website 'cloud-01.oopen.de' from server 'cl-01.oopen.de' at 11/24/2020 (24 November 2020).
   Run in batch mode.

      \033[1m$(basename $0) -b -d cloud_01 -s cl-01.oopen.de -t 2020-11-24 -w cloud-01.oopen.de\033[m

"

   clean_up 1

}


clean_up() {


   if [[ -f "$_backup_crontab_file" ]]; then

      blank_line
      echononl "   (Re)Install Crontab from previously saved crontab file
      '$_backup_crontab_file'.."

      crontab $_backup_crontab_file >> $log_file 2>&1

      if [[ $? -eq 0 ]]; then
         echo_ok
      else
         echo_failed
			error "$(cat $log_file)"
      fi

   fi

   if [[ -n "$CUR_AUTOCOMMIT" ]] ; then
      mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL autocommit='$CUR_AUTOCOMMIT'" > /dev/null 2>&1
   fi
   if [[ -n "$CUR_FOREIGN_KEY_CHECKS" ]] ; then
      mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL autocommit='$CUR_FOREIGN_KEY_CHECKS'" > /dev/null 2>&1
   fi
   if [[ -n "$CUR_UNIQUE_CHECKS" ]] ; then
      mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL autocommit='$CUR_UNIQUE_CHECKS'" > /dev/null 2>&1
   fi
   if [[ -n "$CUR_INNODB_FLUSH_LOG_AT_TRX_COMMIT" ]] ; then
      mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL autocommit='$CUR_INNODB_FLUSH_LOG_AT_TRX_COMMIT'" > /dev/null 2>&1
   fi

   # Perform program exit housekeeping
   rm -f $log_file
   blank_line
   exit $1
}

is_number() {

   return $(test ! -z "${1##*[!0-9]*}" > /dev/null 2>&1);

   # - also possible
   # -
   #[[ ! -z "${1##*[!0-9]*}" ]] && return 0 || return 1
   #return $([[ ! -z "${1##*[!0-9]*}" ]])
}

echononl(){
   if $terminal ; then
      echo X\\c > /tmp/shprompt$$
      if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
         echo -e -n "$*\\c" 1>&2
      else
         echo -e -n "$*" 1>&2
      fi
      rm /tmp/shprompt$$
   fi
}
echo_done() {
   if $terminal ; then
      echo -e "\033[${right_tabstop}G[ \033[32mdone\033[m ]"
   fi
}
echo_ok() {
   if $terminal ; then
      echo -e "\033[${right_tabstop}G[ \033[32mok\033[m ]"
   fi
}
echo_warning() {
   if $terminal ; then
      echo -e "\033[${right_tabstop}G[ \033[33m\033[1mwarn\033[m ]"
   fi
}
echo_failed(){
   if $terminal ; then
      echo -e "\033[${right_tabstop}G[ \033[1;31mfailed\033[m ]"
   fi
}
echo_skipped() {
   if $terminal ; then
      echo -e "\033[${right_tabstop}G[ \033[37mskipped\033[m ]"
   fi
}

fatal (){
   blank_line
   if $terminal ; then
      echo -e "\t[ \033[31m\033[1mFatal\033[m ]: \033[37m\033[1m$*\033[m"
      echo ""
      echo -e "\t\033[31m\033[1m           Script will be interrupted..\033[m\033[m"
   else
      echo "fatal: $*"
      echo "Script will be interrupted.."
   fi
   clean_up 1
}

error(){
   blank_line
   if $terminal ; then
      echo -e "\t[ \033[31m\033[1mFehler\033[m ]: $*"
   else
      echo "Error: $*"
   fi
   blank_line
}

warn (){
   blank_line
   if $terminal ; then
      echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*"
   else
      echo "Warning: $*"
   fi
   blank_line
}

info (){
   if $terminal ; then
      echo ""
      echo -e "\t[ \033[32m\033[1mInfo\033[m ]: $*"
      echo ""
   fi
}

time_duration () {

   local __begin=$1
   local __end=$2

   local __duration

   if [[ "$__begin" ]] && [[ "$__end" ]] ; then

      local __duration

      local __time=`expr $__end - $__begin`
      local __t_h=`expr $__time / 60 / 60`
      local __t_rest_h=`expr $__time - $__t_h \\* 60 \\* 60`
      local __t_m=`expr $__t_rest_h / 60`
      local __t_s=`expr $__t_rest_h - $__t_m \\* 60`

      if [[ $__t_h -gt 0 ]]; then

         if [[ $__t_h -lt 10 ]] ; then
            __t_h=" $__t_h"
         fi
         if [[ $__t_m -lt 10 ]] ; then
            __t_m=" $__t_m"
         fi
         if [[ $__t_s -lt 10 ]] ; then
            __t_s=" $__t_s"
         fi

         echo "$__t_h h : $__t_m min : $__t_s sec"

      elif [[ $__t_m -gt 0 ]]; then

         if [[ $__t_m -lt 10 ]] ; then
            __t_m=" $__t_m"
         fi
         if [[ $__t_s -lt 10 ]] ; then
            __t_s=" $__t_s"
         fi

         echo "$__t_m min : $__t_s sec"

      else
         if [[ $__t_s -lt 10 ]] ; then
            echo " $__t_s sec"
         else
            echo "$__t_s sec"
         fi
      fi

   else
      echo "N/A"
   fi


}
echo_duration () {

   local __time_duration=${1}
   local __length=${#__time_duration}

   # print duratuion inside inside square brackets "[ duration ]"  with blank delimiter, 
   # so add reduce tabstop by 4 characters
   #
   __tabstop=`expr ${right_tabstop} - ${__length} - 1 - 4`
   echo -en "\033[${__tabstop}G[ \033[33m${__time_duration}\033[m ]"

}

detect_mysql_version () {

   _MYSQLD_VERSION="$(mysqld -V 2>/dev/null)"

   if [[ -z "$_MYSQLD_VERSION" ]]; then
      fatal "No installed MySQL server or distribution found!"
   elif [[ -d "/usr/local/mysql" ]] && [[ "$(basename "$(realpath "/usr/local/mysql")")" =~ percona- ]]; then
      MYSQL_CUR_DISTRIBUTION="Percona"
   elif [[ "$_MYSQLD_VERSION" =~ MariaDB ]]; then
      MYSQL_CUR_DISTRIBUTION="MariaDB"
   elif [[ "$_MYSQLD_VERSION" =~ MySQL ]]; then
      MYSQL_CUR_DISTRIBUTION="MySQL"
   elif [[ -d "/usr/local/mysql" ]] && [[ "$(basename "$(realpath "/usr/local/mysql")")" =~ mysql- ]]; then
      MYSQL_CUR_DISTRIBUTION="MySQL"
   elif [[ -d "/usr/local/mysql" ]] && [[ "$(basename "$(realpath "/usr/local/mysql")")" =~ mariadb- ]]; then
      MYSQL_CUR_DISTRIBUTION="MariaDB"
   else
      error "MySQL Instalation found, but cannot determin the distribution!"

      MYSQL_CUR_DISTRIBUTION=
      echo ""
      echo "   Select the MySQL distribution to install."
      echo ""
      echo "   [1] MySQL (the original community edition)"
      echo "   [2] Percona Server for MySQL"
      echo "   [3] MariaDB"
      echo ""
      echononl "   Eingabe [1/2/3]: "

      while [ "$MYSQL_CUR_DISTRIBUTION" != "MySQL" -a "$MYSQL_CUR_DISTRIBUTION" != "MariaDB" -a "$MYSQL_CUR_DISTRIBUTION" != "Percona" ];do
         read OPTION
         case $OPTION in
               1)      MYSQL_CUR_DISTRIBUTION="MySQL"
               ;;
               2)      MYSQL_CUR_DISTRIBUTION="Percona"
               ;;
               3)      MYSQL_CUR_DISTRIBUTION="MariaDB"
               ;;
               *)    echo ""
                     echo -e "\tFalsche Eingabe ! [ 1 = MySQL ; 2 = Percona ; 3 = MariaDB ]"
                     echo ""
                     echononl "   Eingabe:"
               ;;
         esac
      done
   fi

   MYSQL_VERSION="$(echo $_MYSQLD_VERSION | grep -o -E "[0-9]+\.[0-9]+\.[0-9]+(-[0-9]+)?" | head -n 1)"
   MYSQL_MAJOR_VERSION="$(echo $MYSQL_VERSION | cut -d '.' -f1)"
   MYSQL_MINOR_VERSION="$(echo $MYSQL_VERSION | cut -d '.' -f2)"
   MYSQL_PATCH_LEVEL="$(echo $MYSQL_VERSION | cut -d '.' -f3)"
   MYSQL_MAIN_VERSION="$(echo $MYSQL_VERSION | cut -d '.' -f1,2)"

}


## - Check if a given array (parameter 2) contains a given string (parameter 1)
## -
containsElement () {
   local e
   for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
   return 1
}

trim() {
    local var="$*"
    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
    echo -n "$var"
}

blank_line() {
   if $terminal ; then
      echo ""
   fi
}



# ----------
# - Jobhandling 
# ----------

# - Run 'clean_up' for signals SIGHUP SIGINT SIGTERM
# -
trap clean_up SIGHUP SIGINT SIGTERM



# =============
# --- Some 
# =============

# - Support systemd ?
# -
if [[ "X$(which systemd)" = "X" ]]; then
   SYSTEMD_EXISTS=false
else
   SYSTEMD_EXISTS=true
fi

# - Running in a terminal?
# -
if [[ -t 1 ]] ; then
   terminal=true
else
   terminal=false
fi

#clear

if $terminal ; then
   echo ""
   echo -e "\033[32m-----\033[m"
   echo "Configure Recovery Cloud System from Backup"
   echo -e "\033[32m-----\033[m"
fi


# ----------
#  Read Configurations from $conf_file
# ----------


# - Give your default values here
# -
BATCH_MODE=false
IS_NEXTCLOUD=false

DEFAULT_BACKUP_BASE_DIR="/backup"

DEFAULT_DATABASE_TYPE="mysql"
DEFAULT_MYSQL_CREDENTIAL_ARGS="--defaults-file=/usr/local/mysql/sys-maint.cnf"

# Note:
#    HTTP_USER/HTTP_GROUP from this backup machine!
#
DEFAULT_HTTP_USER="www-data"
DEFAULT_HTTP_GROUP="www-data"
DEFAULT_PHP_ENGINE="FPM"

DEFAULT_LOCAL_WEBSITE_BASE_DIR="/var/www"

blank_line
echononl "   Include Configuration file.."
if [[ ! -f $conf_file ]]; then
   echo_skipped
   warn  "No configuration file '$conf_file' found!\n
              Loading default values.."
else
   source $conf_file
   echo_done
fi
blank_line


# ----------
# - Read commandline parameter
# ----------

while getopts bd:hs:t:w: opt ; do
   case $opt in
      b)    BATCH_MODE=true
            ;;
      d)    DATABASE_NAME="$OPTARG"
            ;;
      h)    usage
            ;;
      s)    SERVER="$OPTARG"
            ;;
      t)    BACKUP_DATE="$OPTARG"
            ;;
      w)    WEBSITE="$OPTARG"
            ;;
      \?)   usage ;;
   esac
done

[[ -z "$DATABASE_TYPE" ]] && DATABASE_TYPE="$DEFAULT_DATABASE_TYPE"
#[[ -z "$MYSQL_CREDENTIAL_ARGS" ]] && MYSQL_CREDENTIAL_ARGS="$DEFAULT_MYSQL_CREDENTIAL_ARGS"

if [[ -z "$MYSQL_CREDENTIAL_ARGS" ]] ; then

   detect_mysql_version

   MAJOR_VERSION="$MYSQL_MAJOR_VERSION"
   MINOR_VERSION="$MYSQL_MINOR_VERSION"
   PATCH_LEVEL="$MYSQL_PATCH_LEVEL"

   if [[ "$MYSQL_CUR_DISTRIBUTION" = "MariaDB" ]] && ([[ $MAJOR_VERSION -gt 10 ]] \
         || ( [[ $MAJOR_VERSION -eq 10 ]] && [[ $MINOR_VERSION -gt 3 ]] )) ; then
      if [[ -S "/tmp/mysql.sock" ]]; then
         MYSQL_CREDENTIAL_ARGS="-u root -S /tmp/mysql.sock"
      elif [[ -S "/run/mysqld/mysqld.sock" ]]; then
         MYSQL_CREDENTIAL_ARGS="-u root -S /run/mysqld/mysqld.sock"
      elif [[ -S "/var/run/mysqld/mysqld.sock" ]]; then
         MYSQL_CREDENTIAL_ARGS="-u root -S /var/run/mysqld/mysqld.sock"
      else
         fatal "Parameter 'MYSQL_CREDENTIAL_ARGS' cannot be determined automated.

              Use configuration file "$conf_file" to set
              parameter manually."
      fi
   else
      if $(mysql --login-path=local  -e ";" > /dev/null 2>&1) ; then
         MYSQL_CREDENTIAL_ARGS="--login-path=local"
      elif [[ -f "/usr/local/mysql/sys-maint.cnf" ]] ; then
         MYSQL_CREDENTIAL_ARGS="--defaults-file=/usr/local/mysql/sys-maint.cnf"
      elif [[ -f "/etc/mysql/debian.cnf" ]] ; then
         MYSQL_CREDENTIAL_ARGS="--defaults-file=/etc/mysql/debian.cnf"
      else
         fatal "Parameter 'MYSQL_CREDENTIAL_ARGS' cannot be determined automated.

              Use configuration file "$conf_file" to set
              parameter manually."
      fi
   fi
fi

[[ -z "$BACKUP_BASE_DIR" ]] && BACKUP_BASE_DIR="$DEFAULT_BACKUP_BASE_DIR"
if [[ ! -d "$BACKUP_BASE_DIR" ]] ; then
   fatal "Backup Base Directory (${BACKUP_BASE_DIR}) NOT found!"
fi

[[ -z "$LOCAL_WEBSITE_BASE_DIR" ]] && LOCAL_WEBSITE_BASE_DIR="$DEFAULT_LOCAL_WEBSITE_BASE_DIR"

[[ -z "$PHP_ENGINE" ]] && PHP_ENGINE="$DEFAULT_PHP_ENGINE"


# Check PHP Version
#
PHP_VERSION=""
if [[ "$PHP_ENGINE" = "FPM" ]] ; then
   if [[ -z "$PHP_VERSION" ]] ; then
      if [[ -h "/usr/local/php" ]]; then
         PHP_VERSION="$(realpath /usr/local/php | cut -d'-' -f2 | cut -d'.' -f1,2)"
      fi
   fi
fi


# - Determin PHP binary
# -
php_binary="$(realpath "$(which php)")"
if [[ -z "$php_binary" ]]; then
   if [[ -x "/usr/local/php/bin/php" ]]; then
      php_binary="/usr/local/php/bin/php"
   else
      fatal "No PHP binary present"
   fi
else
   if [[ ! -x "$php_binary" ]]; then
      fatal "Found PHP binary '$php_binary', but this file is not executable!"
   fi
fi


# - Determin user/group of the webserver
# -
httpd_binary="`which httpd`"
if [ -z "$httpd_binary" ]; then
   httpd_binary="$(ps -axu | grep httpd |  grep -e "^root" | grep -v grep | awk '{print$11}')"
   if [ -z "$httpd_binary" ]; then
      if [ -x "/usr/local/apache2/bin/httpd" ]; then
         httpd_binary="/usr/local/apache2/bin/httpd"
      fi
   fi
fi

if [ -x "$httpd_binary" ];then

   # - Determin websever user
   # -
   _HTTP_USER="`$httpd_binary -t -D DUMP_RUN_CFG 2> /dev/null | grep -i -e "^User" | awk '{print$2}' | cut -d\"=\" -f2 | tr -d '"'`" > /dev/null 2>&1

   _HTTP_GROUP="`$httpd_binary -t -D DUMP_RUN_CFG 2> /dev/null | grep -i -e "^Group" | awk '{print$2}' | cut -d\"=\" -f2 | tr -d '"'`" > /dev/null 2>&1

   # - Is webserver running ?
   # -
   PID=$(ps aux | grep "$(realpath $httpd_binary)" | grep -e "^root" | grep -v grep | awk '{print$2}')
   if [[ "X${PID}X" = "XX" ]] ;then
      IS_HTTPD_RUNNING=false
   else
      IS_HTTPD_RUNNING=true
   fi
fi

if [[ -n "$_HTTP_USER" ]] ; then
   if [[ -n "$HTTP_USER" ]] && [[ "$_HTTP_USER" != "$HTTP_USER" ]]; then
      warn "The script has determined \033[1;37m${_HTTP_USER}\033[m as Webservers user. This\n                     value differs from the value given in your configuration file, \n                     which is \033[1;37m${HTTP_USER}\033[m and takes precedence."
   else
      HTTP_USER=$_HTTP_USER
   fi
else
   [[ -n "$HTTP_USER" ]] || HTTP_USER=$DEFAULT_HTTP_USER
fi
if [[ -n "$_HTTP_GROUP" ]] ; then
   if [[ -n "$HTTP_GROUP" ]] && [[ "$_HTTP_GROUP" != "$HTTP_GROUP" ]]; then
      warn "The script has determined \033[1;37m${_HTTP_GROUP}\033[m as Webservers group. This\n                     value differs from the value given in your configuration file, \n                     which is \033[1;37m${HTTP_GROUP}\033[m and takes precedence."
   else
      HTTP_GROUP=$_HTTP_GROUP
   fi
else
   [[ -n "$HTTP_GROUP" ]] || HTTP_GROUP=$DEFAULT_HTTP_GROUP
fi


# ----------
# - Read in parameters from command line
# ----------

if $terminal && ! $BATCH_MODE ; then

   declare -a unsorted_server_arr
   declare -a server_arr
   declare -a unsorted_version_arr
   declare -a version_arr
   declare -a unsorted_website_arr
   declare -a website_arr

   # Get list (array) of backuped servers
   #
   while IFS='' read -r -d '' _server_backuped ; do

      [[ "$(basename "$_server_backuped")" = "www" ]] && continue
      [[ "$(basename "$_server_backuped")" = "lost+found" ]] && continue
      unsorted_server_arr+=("$(basename "$_server_backuped")")

   done  < <(find "${BACKUP_BASE_DIR}" -mindepth 1 -maxdepth 1 -type d  -print0)

   # - Sort array
   # -
   IFS=$'\n' server_arr=($(sort <<<"${unsorted_server_arr[*]}"))
   IFS="$CUR_IFS"

   SERVER=
   _OK=false
   echo ""
   echo "From which Server would you like to restore?"
   echo ""
   declare -i i=0
   for _server in ${server_arr[@]} ; do
      IFS=':' read -a _arr <<< ${_server}
      echo "   [$i] ${_arr[0]}"
      ((i++))
   done
   echo
   echononl "   Eingabe: "
   while ! $_OK ; do
   read _IN
      if is_number "$_IN" && [[ -n ${server_arr[$_IN]} ]]; then
         IFS=':' read -a _arr <<< ${server_arr[$_IN]}
         SERVER=${_arr[0]}
         _OK=true
      else
         echo ""
         echo -e "\tFalsche Eingabe !"
         echo ""
         echononl "   Eingabe: "
      fi
   done

   for _dir in $(ls "${BACKUP_BASE_DIR}/${SERVER}/archive/") ; do

      [[ -d "${BACKUP_BASE_DIR}/${SERVER}/archive/$_dir" ]] ||  continue
      _backup_date="$(echo "$_dir"| grep -o -E "[0-9]{4}-[0-9]{2}-[0-9]{2}")"

      unsorted_version_arr+=("$(basename "${_dir}"):${_backup_date}")
   done

   if [[ ${#unsorted_version_arr[@]} -lt 1 ]] ; then
      fatal "No backuped version present!"
   fi

   # - Sort array
   # -
   IFS=$'\n' version_arr=($(sort <<<"${unsorted_version_arr[*]}"))
   IFS="$CUR_IFS"


   RESTORE_DIR=""
   BACKUP_DATE=""
   _OK=false
   echo ""
   echo "Which version would you like to restore?"
   echo ""
   declare -i i=0
   for _backup_version in ${version_arr[@]} ; do
      IFS=':' read -a _arr <<< ${_backup_version}
      #echo "   [$i] Directory ${_arr[0]} Version from ${_arr[1]}"
      echo -e "   [$i] Backup Version from \033[1m${_arr[1]}\033[m"
      ((i++))
   done
   echo
   echononl "   Eingabe: "
   while ! $_OK ; do
   read _IN
      if is_number "$_IN" && [[ -n ${version_arr[$_IN]} ]]; then
         IFS=':' read -a _arr <<< ${version_arr[$_IN]}
         BACKUP_DIR="${BACKUP_BASE_DIR}/${SERVER}/archive/${_arr[0]}"
         BACKUP_DATE="${_arr[1]}"
         _OK=true
      else
         echo ""
         echo -e "\tFalsche Eingabe !"
         echo ""
         echononl "   Eingabe: "
      fi
   done

   if [[ -d "${BACKUP_DIR}/misc/www" ]]; then
      DEFAULT_WEBSITE_BASE_DIR="${BACKUP_DIR}/misc/www"
   elif [[ -d "${BACKUP_DIR}/data/www" ]]; then
      DEFAULT_WEBSITE_BASE_DIR="${BACKUP_DIR}/data/www"
   elif [[ -d "${BACKUP_DIR}/backup/www" ]]; then
      DEFAULT_WEBSITE_BASE_DIR="${BACKUP_DIR}/backup/www"
   elif [[ -d "${BACKUP_DIR}/var/www" ]] ;then
      DEFAULT_WEBSITE_BASE_DIR="${BACKUP_DIR}/var/www"
   else
      DEFAULT_WEBSITE_BASE_DIR=""
   fi

   WEBSITE_BASE_DIR=""
   echo ""
   echo -e "\033[32m--\033[m"
   echo ""
   echo -e "Give Website Base Directory of the machine \033[1m${SERVER}\033[m"
   echo ""
   echo ""
   if [[ -n "${DEFAULT_WEBSITE_BASE_DIR}" ]]; then
      while [[ "X${WEBSITE_BASE_DIR}" = "X" ]]; do
         echononl " Website Base Directory[${DEFAULT_WEBSITE_BASE_DIR}]: "
         read WEBSITE_BASE_DIR
         if [ "X${WEBSITE_BASE_DIR}" = "X" ]; then
            WEBSITE_BASE_DIR="${DEFAULT_WEBSITE_BASE_DIR}"

         fi
         if [[ ! -d "${WEBSITE_BASE_DIR}" ]]; then
            echo -e "\n\t Website Base Directory\033[33m\033[1m${RESTORE_DIR}\033[m does not exist!\n"
            WEBSITE_BASE_DIR=""
         fi
      done
   else
      while [[ "X${WEBSITE_BASE_DIR}" = "X" ]]; do
         echononl " Website Base Directory: "
         read WEBSITE_BASE_DIR
         if [ "X${WEBSITE_BASE_DIR}" = "X" ]; then
            echo -e "\n\t\033[33m\033[1mWebsite Base Directory is required!\033[m\n"
            continue
         fi
         if [[ ! -d "${WEBSITE_BASE_DIR}" ]]; then
            echo -e "\n\tGiven Website Base Directory \033[33m\033[1m${WEBSITE_BASE_DIR}\033[m does not exist!\n"
            WEBSITE_BASE_DIR=""
         fi
      done
   fi


   # Get list (array) of Websites
   #
   while IFS='' read -r -d '' _website ; do

      [[ "$(basename "$_website")" = "lost+found" ]] && continue
      [[ "$(basename "$_website")" = "default" ]] && continue
      [[ "$(basename "$_website")" = "dehydrated" ]] && continue
      unsorted_website_arr+=("$(basename "$_website")")

   done  < <(find "${WEBSITE_BASE_DIR}" -mindepth 1 -maxdepth 1 -type d  -print0)

   if [[ ${#unsorted_website_arr} -eq 0 ]]; then
      fatal "No backuped website found at '${WEBSITE_BASE_DIR}'!"
   fi

   # - Sort array
   # -
   IFS=$'\n' website_arr=($(sort <<<"${unsorted_website_arr[*]}"))
   IFS="$CUR_IFS"

   WEBSITE=
   _OK=false
   echo ""
   echo "Which site would you like to restore?"
   echo ""
   declare -i i=0
   for _site in ${website_arr[@]} ; do
      IFS=':' read -a _arr <<< ${_site}
      echo "   [$i] ${_arr[0]}"
      ((i++))
   done
   echo
   echononl "   Eingabe: "
   while ! $_OK ; do
   read _IN
      if is_number "$_IN" && [[ -n ${website_arr[$_IN]} ]]; then
         WEBSITE=${website_arr[$_IN]}
         _OK=true
      else
         echo ""
         echo -e "\tFalsche Eingabe !"
         echo ""
         echononl "   Eingabe: "
      fi
   done

   RESTORE_DIR="${WEBSITE_BASE_DIR}/${WEBSITE}"
   if [[ "$(basename $(realpath "${RESTORE_DIR}/htdocs"))" =~ ^nextcloud ]]; then
      NC_RESTORE_VERSION="$(basename $(realpath "${RESTORE_DIR}/htdocs") | cut -d"-" -f2)"
      IS_NEXTCLOUD=true
   fi


   DATABASE_NAME=""
   echo ""
   echo -e "\033[32m--\033[m"
   echo ""
   echo "Insert Database name for .."
   echo ""
   echo ""
   echononl "Database name: "
   read _DATABASE_NAME
   while [ "X$(trim "$_DATABASE_NAME")" = "X" ] ; do
      echo -e "\n\t\033[33m\033[1mEingabe erforderlich.\033[m\n"
      echononl "Database name: "
      read _DATABASE_NAME
   done
   DATABASE_NAME="$(trim "$_DATABASE_NAME")"

else

   if [[ -z "$SERVER" ]]; then
      fatal "No Server (Parameter '-s') given!"
   fi
   if [[ -z "$BACKUP_DATE" ]] ; then
      fatal "No Backup date (Parameter '-t') given!"
   else
      BACKUP_DIR="${BACKUP_BASE_DIR}/${SERVER}/archive/Backup_${BACKUP_DATE}"
      WEBSITE_BASE_DIR="${BACKUP_DIR}/var/www"
   fi

   if [[ -z "${WEBSITE}" ]]; then
      fatal "No Website (Parameter '-w') given!"
   else
      RESTORE_DIR="${WEBSITE_BASE_DIR}/${WEBSITE}"
      NC_RESTORE_VERSION="$(basename $(realpath "${RESTORE_DIR}/htdocs") | cut -d"-" -f2)"
   fi

   if [[ -z "$DATABASE_NAME" ]] ; then
      fatal "No Website (Parameter '-d') given!"
   fi
fi



# =============
# --- Some final checks
# =============

if ! $(ls /backup/${SERVER}/MySQL/${DATABASE_NAME}/${DATABASE_NAME}-${BACKUP_DATE}-* > /dev/null 2>&1) ; then
   if ! $(ls /backup/${SERVER}/MariaDB/${DATABASE_NAME}/${DATABASE_NAME}-${BACKUP_DATE}-* > /dev/null 2>&1) ; then
      fatal "No backuped database '${DATABASE_NAME} found!"
   else
      SQL_FILE="$(ls /backup/${SERVER}/MariaDB/${DATABASE_NAME}/${DATABASE_NAME}-${BACKUP_DATE}-* | head -n 1)"
   fi
else
   SQL_FILE="$(ls /backup/${SERVER}/MariaDB/${DATABASE_NAME}/${DATABASE_NAME}-${BACKUP_DATE}-* | head -n 1)"
fi

if [[ ! -d "$WEBSITE_BASE_DIR" ]]; then
   fatal "Websites base directory "${WEBSITE_BASE_DIR}" not present"
fi



if $terminal ; then
   echo ""
   echo ""
   echo -e "\033[32m--\033[m"
   echo -e "\033[1;32mRecover \033[1;37m${WEBSITE}\033[1;32m from \033[1;37m${BACKUP_DATE}\033[1;32m - Start with Parameters:"
   echo -e "\033[32m--\033[m"
   echo ""
   echo -e   "   Server from which site will be restored....: $SERVER"
   echo ""
   echo -e   "   Website to restore.........................: $WEBSITE"
   echo ""
   echo -e   "   Backup base directory......................: $BACKUP_BASE_DIR"
   echo -e   "   Local Website Base Directory...............: $LOCAL_WEBSITE_BASE_DIR"
   echo ""
   if $IS_NEXTCLOUD ; then
      echo -e   "   Version of backuped nextcloud..............: $NC_RESTORE_VERSION"
      echo ""
   fi
   #echo -e   "   Backup Host Directory......................: $BACKUP_DIR"
   echo -e   "   Restore Directory..........................: $RESTORE_DIR"
   echo -e   "   Backup date ...............................: $BACKUP_DATE"
   echo ""
   echo -e   "   Database type..............................: $DATABASE_TYPE"
   echo -e   "   Databse name...............................: $DATABASE_NAME"
   echo -e   "   SQL File Path..............................: $SQL_FILE"
   echo ""
   echo -e   "   Webserver user.............................: $HTTP_USER"
   echo -e   "   Webserver group............................: $HTTP_GROUP"
   echo ""
   if [[ -n "$PHP_VERSION" ]]; then
      echo -e   "   PHP version................................: $PHP_VERSION"
      echo -e   "   PHP Engine.................................: $PHP_ENGINE"
      echo ""
   fi
   if [[ "$DATABASE_TYPE" = "mysql" ]] ; then
      echo -e   "   Mysql Credentials..........................: $MYSQL_CREDENTIAL_ARGS"
   fi
   echo ""

   echo ""
   echo -n "   Type upper case 'YES' to continue executing with this parameters: "
   read OK
   if [[ "$OK" = "YES" ]] ; then
      echo ""
      echo ""
      echo -e "\033[1;32mLet's go\033[1;37m..\033[m"
   else
      fatal "Abort by user request - Answer as not 'YES'"
   fi
fi


# -----
# - Doing some pre-script tasks
# -----

if $terminal ; then
   echo ""
   echo ""
   echo -e "\033[37m\033[1mDoing some pre-script tasks..\033[m"
   echo ""
fi


# - Deaktiviere Cronjobs
# -
_backup_crontab_file=/tmp/crontab_root.${backup_date}
echononl "   Backup Crontab to '$_backup_crontab_file'"
crontab -l > $_backup_crontab_file 2> $log_file
if [[ $? -eq 0 ]]; then
   echo_ok
else
   echo_failed
   fatal "$(cat $log_file)"
fi

echononl "   Remove crontab for root.."
crontab -r > $log_file 2>&1
if [[ $? -eq 0 ]]; then
   echo_ok
else
   echo_failed
   fatal "$(cat $log_file)"
fi


# - Stop Apache Webserver
# -
blank_line
echononl "   Stop Apache Webserver.."
if $SYSTEMD_EXISTS ; then
   systemctl stop apache2
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      fatal "$(cat $log_file)"
   fi
else
   /etc/init.d/apache2 stop
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      fatal "$(cat $log_file)"
   fi
fi

blank_line
echononl "   Create Directory '$BACKUP_BASE_DIR'.."
if [[ ! -d "$BACKUP_BASE_DIR" ]]; then
   mkdir -p "$BACKUP_BASE_DIR" > $log_file 2>&1
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      fatal "$(cat $log_file)"
   fi
else
   echo_skipped
fi

blank_line
# - GET current (global) Autocommit value
# -
echononl "   GET current (global) value \033[1mautocommit\033[m"
CUR_AUTOCOMMIT="$(mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SHOW GLOBAL VARIABLES LIKE 'autocommit'" | awk '{print$2}')" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

# - GET current (global) value for 'foreign_key_checks'
# -
echononl "   GET current (global) value \033[1mforeign_key_checks\033[m"
CUR_FOREIGN_KEY_CHECKS="$(mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SHOW GLOBAL VARIABLES LIKE 'foreign_key_checks'" | awk '{print$2}')" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

# - GET current (global) value for 'unique_checks'
# -
echononl "   GET current (global) value \033[1munique_checks\033[m"
CUR_UNIQUE_CHECKS="$(mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SHOW GLOBAL VARIABLES LIKE 'unique_checks'" | awk '{print$2}')" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

# - GET current (global) value for 'innodb_flush_log_at_trx_commit'
# -
echononl "   GET current (global) value \033[1minnodb_flush_log_at_trx_commit\033[m"
CUR_INNODB_FLUSH_LOG_AT_TRX_COMMIT="$(mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SHOW GLOBAL VARIABLES LIKE 'innodb_flush_log_at_trx_commit'" | awk '{print$2}')" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

blank_line

echononl "   Set Autocommit to OFF"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL autocommit='OFF'" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

echononl "   Set foreign_key_checks to OFF"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL foreign_key_checks='OFF'" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

echononl "   Set unique_checks to OFF"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL unique_checks='OFF'" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

echononl "   Set innodb_flush_log_at_trx_commit to 2"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL innodb_flush_log_at_trx_commit=2" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi


# -----
# -  Main Part of Script
# -----

if $terminal ; then
   echo ""
   echo ""
   echo -e "\033[37m\033[1mMain Part of Script.\033[m"
   echo ""
fi


echononl "   Remove Documentroot Directory if exists .."
if [[ -d "${LOCAL_WEBSITE_BASE_DIR}/$(basename "$RESTORE_DIR")" ]] ; then
   b_timestamp=$(date +"%s")
   rm -rf "${LOCAL_WEBSITE_BASE_DIR}/$(basename "$RESTORE_DIR")" > $log_file 2>&1
   retval=$?
   e_timestamp=$(date +"%s")
   echo_duration "$(time_duration $b_timestamp $e_timestamp)"
   if [[ $retval -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      fatal "$(cat $log_file)"
   fi
else
   echo_skipped
fi

blank_line

echononl "   Set Autocommit to OFF"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL autocommit='OFF'" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

echononl "   Set foreign_key_checks to OFF"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL foreign_key_checks='OFF'" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

echononl "   Set unique_checks to OFF"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL unique_checks='OFF'" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi

echononl "   Set innodb_flush_log_at_trx_commit to 2"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL innodb_flush_log_at_trx_commit=2" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
else
   echo_failed
   error "$(cat $log_file)"
fi


blank_line

echononl "   Restore Database '${DATABASE_NAME}'.."
b_timestamp=$(date +"%s")
mysql $MYSQL_CREDENTIAL_ARGS $DATABASE_NAME < $SQL_FILE > $log_file 2>&1
retval=$?
e_timestamp=$(date +"%s")
echo_duration "$(time_duration $b_timestamp $e_timestamp)"
if [[ $retval -eq 0 ]]; then
   echo_ok
else
   echo_failed
   fatal "$(cat $log_file)"
fi

blank_line

echononl "   Sync Webspace - site '${WEBSITE}'.."

# Begin timestamp
#
b_timestamp=$(date +"%s")
cp -ral "$RESTORE_DIR" "${LOCAL_WEBSITE_BASE_DIR}/" > $log_file 2>&1
#rsync -a --delete --link-dest="$RESTORE_DIR" "$RESTORE_DIR" "${LOCAL_WEBSITE_BASE_DIR}/" > $log_file 2>&1
retval=$?
# End timestamp
#
e_timestamp=$(date +"%s")

duration=$(time_duration $b_timestamp $e_timestamp)
echo_duration "$duration"

if [[ $retval -eq 0 ]]; then
   echo_ok
else
   echo_failed
   #echo -e "\n   rsync -a --delete \"$RESTORE_DIR\" \"${LOCAL_WEBSITE_BASE_DIR}/\""
   echo -e "\n   cp -ral \"$RESTORE_DIR\" \"${LOCAL_WEBSITE_BASE_DIR}/\""
   fatal "$(cat $log_file)"
fi

blank_line

if $IS_NEXTCLOUD ; then
   echononl "   Set maintanance mod on site '${WEBSITE}' to 'off'.."
   if [[ -f "${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}/htdocs/config/config.php" ]] ; then
      perl -i -n -p -e "s/^(\s*)(.*'maintenance'.*)/\1'maintenance' => false,/" \
         "${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}/htdocs/config/config.php" > $log_file 2>&1
      if [[ $? -eq 0 ]]; then
         echo_ok
      else
         echo_failed
         echo -e "\n   rsync -a --delete \"$RESTORE_DIR\" \"${LOCAL_WEBSITE_BASE_DIR}/\""
         fatal "$(cat $log_file)"
      fi
   else
      echo_skipped
      error "Configuration file '${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}/htdocs/config/config.php' not found!"
   fi
fi


echononl "   Set Permissons on local website directory\n      '${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}'.."
if [[ -d "${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}" ]] ; then
   chown "$HTTP_USER":"$HTTP_GROUP" "${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}" > $log_file 2>&1
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      echo -e "\n   chown \"$HTTP_USER\":\"$HTTP_GROUP\" \"${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}\"" 
      error "$(cat $log_file)"
   fi
else
   echo_skipped
fi

blank_line

echononl "   Copy info file 'BACKUP-DATE' to Documentroot.."
if [[ -d "${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}" ]]; then
   echo "${BACKUP_DATE}" > "${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}/BACKUP-DATE" 2> $log_file 
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      fatal "$(cat $log_file)"
   fi
else
   echo_skipped
   warn "Local wbesite directory '${LOCAL_WEBSITE_BASE_DIR}/${WEBSITE}' does not exists!"
fi


# -----
# - Doing some post-script tasks
# -----

if $terminal ; then
   echo ""
   echo ""
   echo -e "\033[37m\033[1mDoing some post-script tasks..\033[m"
   echo ""
fi

echononl "   Set Autocommit to $CUR_AUTOCOMMIT"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL autocommit='$CUR_AUTOCOMMIT'" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
   CUR_AUTOCOMMIT=""
else
   echo_failed
   error "$(cat $log_file)"
fi

echononl "   Set foreign_key_checks to $CUR_FOREIGN_KEY_CHECKS"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL foreign_key_checks='$CUR_FOREIGN_KEY_CHECKS'" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
   CUR_FOREIGN_KEY_CHECKS=""
else
   echo_failed
   error "$(cat $log_file)"
fi

echononl "   Set unique_checks to $CUR_UNIQUE_CHECKS"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL unique_checks='$CUR_UNIQUE_CHECKS'" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
   CUR_UNIQUE_CHECKS=""
else
   echo_failed
   error "$(cat $log_file)"
fi

echononl "   Set innodb_flush_log_at_trx_commit to $CUR_INNODB_FLUSH_LOG_AT_TRX_COMMIT"
mysql $MYSQL_CREDENTIAL_ARGS -N -s -e "SET GLOBAL innodb_flush_log_at_trx_commit=$CUR_INNODB_FLUSH_LOG_AT_TRX_COMMIT" >> $log_file 2>&1
if [[ $? -eq 0 ]];then
   echo_ok
   CUR_INNODB_FLUSH_LOG_AT_TRX_COMMIT=""
else
   echo_failed
   error "$(cat $log_file)"
fi

blank_line

echononl "   Restart PHP engine.."
if [[ "$PHP_ENGINE" = "FPM" ]] && [[ -n "$PHP_VERSION" ]]; then
   if $SYSTEMD_EXISTS ; then
      systemctl restart php-${PHP_VERSION}-fpm > $log_file 2>&1
      if [[ $? -eq 0 ]]; then
         echo_ok
      else
         echo_failed
         error "$(cat $log_file)"
      fi
   else
      /etc/init.d/php-${PHP_VERSION}-fpm restart > $log_file 2>&1
      if [[ $? -eq 0 ]]; then
         echo_ok
      else
         echo_failed
         error "$(cat $log_file)"
      fi
   fi
else
   echo_skipped
fi

# - Start Apache Webserver
# -
blank_line
echononl "   Start Apache Webserver.."
if $SYSTEMD_EXISTS ; then
   systemctl start apache2 > $log_file 2>&1
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      error "$(cat $log_file)"
   fi
else
   /etc/init.d/apache2 start > $log_file 2>&1
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      error "$(cat $log_file)"
   fi
fi

_redis_cli_bin="$(which redis-cli)"
if [[ -z "$_redis_cli_bin" ]]; then
   if [[ -x "/usr/local/bin/redis-cli" ]]; then
      _redis_cli_bin="/usr/local/bin/redis-cli"
   fi
fi


echononl "   Flush redis cache.."
if [[ -x "$_redis_cli_bin" ]]; then
   $_redis_cli_bin flushall > $log_file 2>&1
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      error "$(cat $log_file)"
   fi
else
   echo_skipped
fi


echononl "   Restart redis server.."
if $SYSTEMD_EXISTS ; then
   systemctl restart redis-server > $log_file 2>&1
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      error "$(cat $log_file)"
   fi
else
   /etc/init.d/redis-server restart  > $log_file 2>&1
   if [[ $? -eq 0 ]]; then
      echo_ok
   else
      echo_failed
      error "$(cat $log_file)"
   fi
fi

blank_line

clean_up 0