#!/bin/bash 

# Filterlist, uncomment to download lists, mutliple lists are supported, but
# don't choose too many lists since it will slow down the adblocker
URLS=(

# Easylist
# Easylist English
https://easylist-downloads.adblockplus.org/easylist.txt

# Easylist Privacy, blocks tracking
https://easylist-downloads.adblockplus.org/easyprivacy.txt

# Easylist Without element hiding
#https://easylist-downloads.adblockplus.org/easylist_noelemhide.txt

# Easylist additional subscriptions
# Easylist Germany
https://easylist-downloads.adblockplus.org/easylistgermany.txt

# Easylist Italy
#https://easylist-downloads.adblockplus.org/easylistitaly.txt

# Easylist Dutch
#http://dutchadblockfilters.googlecode.com/svn/trunk/AdBlock_Dutch_hide.txt

# Easylist French
#http://lian.info.tm/liste_fr.txt

# Easylist China
#http://adblock-chinalist.googlecode.com/svn/trunk/adblock.txt

# Easylist Bulgaria
#http://stanev.org/abp/adblock_bg.txt

# Easylist Indonesia
#http://indonesianadblockrules.googlecode.com/hg/subscriptions/abpindo.txt

# Easylist Finland
#http://www.wiltteri.net/wiltteri.txt

# Easylist Greece 
#http://www.void.gr/kargig/void-gr-filters.txt

# Adversity
# Adversity English list
#https://adversity.googlecode.com/hg/Adversity.txt  

# Adversity Privacy
#https://adversity.googlecode.com/hg/Adversity-Tracking.txt

# Fanboy
# Fanboy English list
#http://www.fanboy.co.nz/adblock/fanboy-adblock.txt

# Fanboy Tracking list
#http://www.fanboy.co.nz/adblock/fanboy-tracking.txt

)

if [ ${#URLS[@]} -eq 0 ]; then 
  echo "No urls specified, you must uncomment at least one url." 
  exit 1
fi
UNSUPPORTED="[\$,~]{1}(xbl|ping|xmlhttprequest|dtd|elemhide|other|collapse|donottrack|popup)(,|$)|[\$,]object-subrequest(,|$)"
CONFIG=${XDG_CONFIG_HOME}/dwb/settings

declare PROFILE
# Parse settings
while read; do 
  if [[ ${REPLY} =~ ^\[ ]]; then 
    PROFILE=${REPLY:1:$((${#REPLY}-2))}
  fi
  if [ "${PROFILE}" = "default" ]  && [[ ${REPLY} =~ ^adblocker-filterlist ]]; then 
    DEST=${REPLY//*=/}
    break
  fi
done < ${CONFIG}

if [ ! ${DEST} ]; then 
  DEST=${XDG_CONFIG_HOME}/dwb/adblock_default
  echo "No setting 'adblocker-filterlist' found for profile default, using '${DEST}'"
  sed -i "0,/adblocker-filterlist/s#^adblocker-filterlist=.*#adblocker-filterlist=${DEST}#" ${CONFIG}
fi

echo "Saving filterlist as ${DEST}"

if [ -e  ${DEST} ]; then 
  rm ${DEST}
fi

AFTER=0
BEFORE=0
REMOVED=0
TOTAL=0

# Download the filterlists
for URL in ${URLS[@]}; do 
  TMP=$(mktemp)
  echo "Grabbing ${URL}"
  wget -O ${TMP} ${URL} &>/dev/null
  BEFORE=( $(wc -l "${TMP}") )

  ((BEFORE+=TOTAL))
  sed -r "/${UNSUPPORTED}/d" "${TMP}" >> ${DEST}
  rm ${TMP}
  AFTER=( $(wc -l "${DEST}") )
  ((REMOVED=BEFORE-AFTER))
  TOTAL=${BEFORE}
done
echo "Removed ${REMOVED} unsupported of ${BEFORE} filters."
echo "Removing comments."
sed -i "/^[!\[]/d" "${DEST}"
echo "Done."