const { matchAttendeeToPersons, loadPersons } = require('./person-matcher.js');

function matchSpeakers(speakers, personsList) {
  const persons = personsList || loadPersons();
  const map = new Map();
  for (const speaker of speakers) {
    const attendee = { name: speaker.name, email: speaker.email || '' };
    const match = matchAttendeeToPersons(attendee, persons);
    if (match.matched) {
      const personName = match.file.replace('.md', '');
      map.set(speaker.name, `[[00 Kontext/Personen/${personName}]]`);
    } else {
      map.set(speaker.name, null);
    }
  }
  return map;
}

function escapeRegex(s) {
  return s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
}

function replaceSpeakerNames(text, map) {
  const entries = [...map.entries()]
    .filter(([_, link]) => link !== null)
    .sort((a, b) => b[0].length - a[0].length);

  if (entries.length === 0) return text;

  const pattern = entries.map(([name]) => escapeRegex(name)).join('|');
  const re = new RegExp(pattern, 'g');

  return text.replace(re, (match) => {
    return map.get(match) || match;
  });
}

module.exports = { matchSpeakers, replaceSpeakerNames };