#!/bin/bash

echo '' > pre-adblock.txt
touch errors.log

date=$(date '+%a, %d %b %Y %H:%M:%S %z')

#Adblock lists download
while read -r p; do
  echo "#!MARKER- Begin of $p" >> pre-adblock.txt

  wget -qO - "$p" >> pre-adblock.txt || echo "$date - Download failed: $p" >> errors.log
  sleep 2
done <adblocklists.txt

# Breaking before will cause trouble if a URL is not reachable
set -u

#Remove comments in lists and change marker to comment
sed -i -e 's/^!.*$//g' -e 's/#!MARKER-/!MARKER-/g' pre-adblock.txt

echo '' > compiled/all-adblock.txt

{
  #Create Header
  echo '! Title: Mainboarder compiled
! Description: Filters optimized for uBlock, for single list use, deduplicated
! Expires: 1 days
! Last modified: '"$date"'
! Homepage: https://git.mainboarder.de/Public/Adblocker
!'

  #Add own rules
  cat own-rules.txt

  #Remove duplicate lines
  awk '!seen[$0]++' pre-adblock.txt
} >> compiled/all-adblock.txt

cd compiled
git pull --quiet
git add all-adblock.txt
git commit --quiet -m "$date" 
git push --quiet --no-progress 2>&1 | grep -v "references"

lastcommit=$(git log --pretty=format:'%H' -n 3 | tail -n 1)
git checkout --quiet --orphan temp $lastcommit
git commit --quiet -m "Truncated history"
git rebase --quiet --onto temp $lastcommit main
git branch --quiet -D temp
git push --quiet --force --no-progress 2>&1 | grep -v "references"