#!/usr/bin/env bash

# Filter out the subdomains not pointing to a first-party tracker

cat subdomains/*.list | sort -u > temp/all_subdomains.list
./filter_subdomains.py temp/all_subdomains.list > temp/all_toblock.list
sort -u temp/all_toblock.list > dist/firstparty-trackers.txt

# Format the blocklist so it can be used as a hostlist

(
    echo "# First-party trackers host list"
    echo "#"
    echo "# About first-party trackers: https://git.frogeye.fr/geoffrey/eulaurarien#whats-a-first-party-tracker"
    echo "# Source code: https://git.frogeye.fr/geoffrey/eulaurarien"
    echo "# Latest version of this list: https://hostfiles.frogeye.fr/firstparty-trackers-hosts.txt"
    echo "#"
    echo "# Generation date: $(date -Isec)"
    echo "# Generation version: eulaurarien $(git describe --tags)"
    echo "# Number of source websites: $(wc -l temp/all_websites.list | cut -d' ' -f1)"
    echo "# Number of source subdomains: $(wc -l temp/all_subdomains.list | cut -d' ' -f1)"
    echo "# Number of known trackers : $(python -c 'import regexes; print(len(regexes.REGEXES))')"
    echo "# Number of blocked subdomains: $(wc -l dist/firstparty-trackers.txt | cut -d' ' -f1)"
    echo
    cat dist/firstparty-trackers.txt | while read host;
    do
        echo "0.0.0.0 $host"
    done
) > dist/firstparty-trackers-hosts.txt