#!/usr/bin/env bash

# =============================================================================
#
# To allow normal users using this script to disable recording, then add
#
#    ALL ALL = (root) NOPASSWD: /usr/local/src/jitsi/jitsi_disable_recording.sh
#
# to file '/etc/sudoers.d/50-user'
#
# =============================================================================

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

#conf_file="${working_dir}/conf/${script_name%%.*}.conf"
conf_file="${working_dir}/conf/jitsi.conf"

LOCK_DIR="/tmp/$(basename $0).$$.LOCK"
log_file="${LOCK_DIR}/${script_name%%.*}.log"


# ----------
# Base Function(s)
# ----------

clean_up() {

   # Perform program exit housekeeping
   rm -rf "$LOCK_DIR"
   blank_line
   exit $1
}

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
}
fatal(){
   echo ""
   if $terminal ; then
      echo -e "   [ \033[31m\033[1mFatal\033[m ] $*"
   else
      echo -e "   [ Fatal ] $*"
   fi
   echo ""
   if $terminal ; then
      echo -e "             \033[1mScript terminated\033[m.."
   else
      echo -e "             Script terminated.."
   fi
   echo ""
   rm -rf $LOCK_DIR
   exit 1
}
error (){
   echo ""
   if $terminal ; then
      echo -e "   [ \033[31m\033[1mError\033[m ] $*"
   else
      echo "   [ Error ] $*"
   fi
   echo ""
}

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

notice (){
   if $terminal ; then
      echo ""
      echo -e "   [ \033[33m\033[1mNotice\033[m ] $*"
      echo ""
   else
      echo ""
      echo "   [ Notice ]  $*" 
      echo ""
   fi
}

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

echo_ok() {
   if $terminal ; then
      echo -e "\033[85G[ \033[32mok\033[m ]"
   fi
}
echo_done() {
   if $terminal ; then
      echo -e "\033[85G[ \033[32mdone\033[m ]"
   fi
}
echo_failed(){
   if $terminal ; then
      echo -e "\033[85G[ \033[1;31mfailed\033[m ]"
   fi
}
echo_skipped() {
   if $terminal ; then
      echo -e "\033[85G[ \033[33m\033[1mskipped\033[m ]"
   fi
}
echo_wait(){
   if $terminal ; then
      echo -en "\033[85G[ \033[5m\033[1m..\033[m ]"
   fi
}

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
}

detect_os () {

   if $(which lsb_release > /dev/null 2>&1) ; then

      DIST="$(lsb_release -i | awk '{print tolower($3)}')"
      DIST_VERSION="$(lsb_release -r | awk '{print tolower($2)}')"
      DIST_CODENAME="$(lsb_release -c | awk '{print tolower($2)}')"

      if [[ "$DIST" = "debian" ]]; then
         if $(echo "$DIST_VERSION" | grep -q '\.') ; then
            DIST_VERSION=$(echo "$DIST_VERSION" | cut --delimiter='.' -f1)
         fi
      fi

   elif [[ -e "/etc/os-release" ]]; then

      . /etc/os-release

      DIST=$ID
      DIST_VERSION=${VERSION_ID}

   fi

   # remove whitespace from DIST and DIST_VERSION
   DIST="${DIST// /}"
   DIST_VERSION="${DIST_VERSION// /}"

}



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

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

# - Create lock directory '$LOCK_DIR"
#
mkdir "$LOCK_DIR"


# ----------
# - Some checks ..
# ----------

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


# ==========
# - Begin Main Script
# ==========

# ----------
# - Headline
# ----------

if $terminal ; then
   echo ""
   echo -e "\033[1m----------\033[m"
   echo -e "\033[32m\033[1mRunning script \033[m\033[1m$script_name\033[32m .. \033[m"
   echo -e "\033[1m----------\033[m"
   echo ""
fi



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


# - Give your default values here
# -
DEFAULT_FQHN_HOSTNAME="$(hostname -f)"


if [[ -f "$conf_file" ]]; then
   source "$conf_file"
else
   warn "No configuration file '$conf_file' present.\n
             Loading default values.."
fi

[[ -n "$FQHN_HOSTNAME" ]] || FQHN_HOSTNAME="$DEFAULT_FQHN_HOSTNAME"

JITSI_MEET_CONFIG_FILE="/etc/jitsi/meet/${FQHN_HOSTNAME}-config.js"

if [[ ! -f "$JITSI_MEET_CONFIG_FILE" ]] ; then
   fatal "Jitsi Meet Configuration '$JITSI_MEET_CONFIG_FILE' not found."
fi

echononl "Disable Recording Jitsi Meet Conference.."
if grep -q -E "^\s*fileRecordingsEnabled:\s+true\s*,\s*$" $JITSI_MEET_CONFIG_FILE 2> /dev/null ; then
   perl -i -n -p -e "s/^(\s*fileRecordingsEnabled:)\s+.*/\1 false,/" $JITSI_MEET_CONFIG_FILE 2> "$log_file"
   if [[ -s "$log_file" ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
      if ! $terminal ; then
         echo ""
         echo "   [ ok ] Recording disabled.."
         echo ""
      fi
   fi
else
   echo_skipped
   notice   "Recording already disabled"
fi


clean_up 0