#!/bin/bash

#
# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/
#
# Copyright (c) 2012 BigBlueButton Inc. and by respective authors (see below).
#
# This program is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free Software
# Foundation; either version 3.0 of the License, or (at your option) any later
# version.
#
# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
#

test -x /var/bigbluebutton || exit 0

#
# Defaults to decide how many days back to keep files
# If you need to change them, do so in /etc/default/bigbluebutton-cron-config
#
history=5
unrecorded_days=14
published_days=14
log_history=28

# Load variables from /etc/default/bigbluebutton-cron-config if it exists
if [ -r /etc/default/bigbluebutton-cron-config ]; then
  . /etc/default/bigbluebutton-cron-config
fi

#
# Delete presentations older than N days
#
find /var/bigbluebutton/ -maxdepth 1 -type d -name "*-[0-9]*" -mtime +$history -exec rm -rf '{}' +

#
# Delete streams from Kurento and mediasoup older than N days
#
kurento_dir=/var/kurento/
mediasoup_dir=/var/mediasoup/
bbb_webrtc_recorder_dir=/var/lib/bbb-webrtc-recorder/

remove_stale_sfu_raw_files() {
  for app in recordings screenshare; do
      app_dir="${1}${app}"
      if [[ -d $app_dir ]]; then
          find "$app_dir" -name "*.mkv" -o -name "*.webm" -mtime +"$history" -delete
          find "$app_dir" -type d -empty -mtime +"$history" -exec rmdir '{}' +
      fi
  done
}

remove_stale_sfu_raw_files "$kurento_dir"
remove_stale_sfu_raw_files "$mediasoup_dir"
remove_stale_sfu_raw_files "$bbb_webrtc_recorder_dir"

#
# Delete FreeSWITCH wav/opus recordings older than N days
#
find /var/freeswitch/meetings/ -name "*.wav"  -mtime +$history -delete
find /var/freeswitch/meetings/ -name "*.opus" -mtime +$history -delete

#
# Delete old/rotated log files
#
find /opt/freeswitch/var/log/freeswitch -type f -mtime +$log_history -delete
find /var/log/bigbluebutton -type f -mtime +$log_history -delete
find /var/log/bbb-webrtc-sfu -type f -mtime +$log_history -delete
find /var/log/kurento-media-server -name "*.pid*.log" -type f -mtime +$log_history -delete

#
# Delete raw files of recordings without recording marks older than N days
#
remove_raw_of_recordings_without_marks() {
        logger "Removing old raw directory of recordings without marks"
        find /var/bigbluebutton/recording/status -name '*.norecord' -mtime +$unrecorded_days | while read archived_norecord; do
                recording_id=${archived_norecord%.norecord}
                recording_id=${recording_id##*/}
                bbb-record --delete $recording_id 2>&1 | logger
        done
}

# Enabled by default; comment to disable.
remove_raw_of_recordings_without_marks

#
# Delete old raw dirs from recordings properly published using 'presentation' scripts.
#

remove_raw_of_published_recordings(){
    TYPES=$(cd /usr/local/bigbluebutton/core/scripts/process; ls *.rb | sed s/.rb//g)
    logger "Removing raw directory of old recordings:"
    if [ "$TYPES" == "" ]; then
        TYPES="presentation"
    fi
    cd /var/bigbluebutton/recording/raw/
    old_meetings=$(find . -name events.xml -mtime +$published_days | cut -d"/" -f2 )
    for meeting in $old_meetings
    do
        PROPERLY_PUBLISHED="true"
        FAILED_TYPES=""
        for type in $TYPES
        do
            file="/var/bigbluebutton/recording/status/published/$meeting-$type.done"
            if ! [ -f "$file" ]; then
                PROPERLY_PUBLISHED="false"
                FAILED_TYPES="$FAILED_TYPES $type"
            fi
        done
        if [ "$PROPERLY_PUBLISHED" == "true" ]; then
            logger "$meeting properly published, removing raw dir."
            rm -r /var/bigbluebutton/recording/raw/$meeting/
        else
            logger "$meeting was not properly published in [ $FAILED_TYPES ]"
        fi
    done
}

remove_raw_of_published_recordings

#
# Remove untagged and unamed docker images, cleanning /var/lib/docker/overlay2
#
docker image prune -f

#
# Remove old *.afm and *.pfb files from /tmp directory (if any exist)
#
find /tmp -name "*.afm" -mtime +$history -delete
find /tmp -name "*.pfb" -mtime +$history -delete