#!/usr/bin/env bash
  
cript_name="$(basename $(realpath $0))"
working_dir="$(dirname $(realpath $0))"

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

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

DIST="ubuntu"
DIST_RELEASE="xenial"

FQDN_HOSTNAME="bbb.oopen.de"
HOSTNAME=" ${FQDN_HOSTNAME%%.*}"


# ----------
# 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 ""
}

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

echo_ok() {
   if $terminal ; then
      echo -e "\033[85G[ \033[32mok\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
}



# ----------
# - 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
   fatal "Script must run in a terminal."
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"
fi


# Make the HTML5 client default
#
if $terminal ; then
   echo ""
   echo -e "   \033[1mMake the HTML5 client the default client\033[m (no longer load the Flash client)"
   echo ""
fi
echononl "Set 'attendeesJoinViaHTML5Client=true'.."
if $(grep -q -E "^\s*attendeesJoinViaHTML5Client=true" \
     /usr/share/bbb-web/WEB-INF/classes/bigbluebutton.properties 2> /dev/null) ; then
   echo_skipped
else
   perl -i -n -p -e "s/^(attendeesJoinViaHTML5Client=.*)/##!\1\nattendeesJoinViaHTML5Client=true/" \
      /usr/share/bbb-web/WEB-INF/classes/bigbluebutton.properties > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
fi

echononl "Set 'moderatorsJoinViaHTML5Client=true'.."
if $(grep -q -E "^\s*moderatorsJoinViaHTML5Client=true" \
     /usr/share/bbb-web/WEB-INF/classes/bigbluebutton.properties 2> /dev/null) ; then
   echo_skipped
else
   perl -i -n -p -e "s/^(moderatorsJoinViaHTML5Client=.*)/##!\1\nmoderatorsJoinViaHTML5Client=true/" \
      /usr/share/bbb-web/WEB-INF/classes/bigbluebutton.properties >> "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
fi

blank_line

# Assign the server a hostname
#
if $terminal ; then
   echo ""
   echo -e "   \033[1mAssign the server a hostname '$FQDN_HOSTNAME'\033[m"
   echo ""
fi
echononl "Trigger command 'bbb-conf --setip $FQDN_HOSTNAME'"
echo_wait
bbb-conf --setip $FQDN_HOSTNAME > "$log_file" 2>&1
if [[ $? -ne 0 ]]; then
   echo_failed
   error "$(cat "$log_file")"
else
   echo_ok
   echo -e  "
\033[32m----------\033[m
\033[1mOutput from assigning a hostname 'bbb-conf --setip $FQDN_HOSTNAME' was:\033[m

$(cat "$log_file")
\033[32m----------\033[m
"
fi


clean_up 0