Create domain filters for patterns without filters

[chrmod]

Those patterns come from whotracks.me tracker database which had domain association only. For those patterns that had no filter, we create domain filters based on the domains that were already assigned to the pattern.

To prevent breakage all domain filters are scoped to third-parties only.

[chrmod]

script used to update the files

import { readFileSync, writeFileSync } from 'fs';
import { getSpecs } from './scripts/helpers.js';

const template = (spec, filters) => `${spec}
---filters
${filters.map((filter) => `${filter}`).join('\n')}
---filters
`;

const specs = getSpecs('patterns').filter(([id, spec]) => {
  if (!spec.field('filters').optionalStringValue()) {
    return true;
  }
});

specs.forEach(([id, spec]) => {
  const filters = [];
  const domains = spec.field('domains').optionalStringValue();
  if (domains) {
    for (const line of domains.split(/[\r\n]+/g)) {
      const trimmed = line.trim();
      filters.push(`||${trimmed}^$3p`);
    }

    const filename = `./db/patterns/${id}.eno`;
    const rawSpec = readFileSync(filename, { encoding: 'utf-8' });
    writeFileSync(filename, template(rawSpec, filters));
  }
});