import { describe, it, expect } from 'vitest';
import { Anonymizer, presets } from '../src/index.js';

describe('generic preset', () => {
  const a = new Anonymizer({ patterns: presets.generic });

  it('redacts a Luhn-valid credit card', async () => {
    const r = await a.anonymize('Carte 4111 1111 1111 1111 acceptée'); // valid test Visa
    expect(r.anon).not.toContain('4111');
    expect(Object.values(r.mapping)).toContain('4111 1111 1111 1111');
    expect(Object.keys(r.mapping)[0]).toMatch(/^\[CREDIT_CARD_1\]$/);
  });

  it('leaves a Luhn-INVALID digit run intact (not tagged as a card)', async () => {
    // Unseparated run: no other generic pattern matches it either, so it stays verbatim.
    const r = await a.anonymize('Ref 1234567890123456 interne'); // fails Luhn
    expect(r.anon).toContain('1234567890123456');
    expect(r.mapping).toEqual({});
  });

  it('redacts an IPv4 address without mangling it as a phone or card', async () => {
    const r = await a.anonymize('Serveur 192.168.1.42 indisponible');
    expect(r.mapping).toEqual({ '[IPV4_1]': '192.168.1.42' });
    expect(a.deanonymize(r.anon, r.mapping)).toContain('192.168.1.42');
  });

  it('tags a date as DATE (not TEL) and keeps a phone separate', async () => {
    const r = await a.anonymize('Le 12.03.2024, appelez le +41 22 345 67 89.');
    const tags = Object.keys(r.mapping).map((p) => p.replace(/_\d+\]$/, ']'));
    expect(tags).toContain('[DATE]');
    expect(tags).toContain('[TEL]');
    expect(r.mapping['[DATE_1]']).toBe('12.03.2024');
    // round-trip is lossless
    expect(a.deanonymize(r.anon, r.mapping)).toBe('Le 12.03.2024, appelez le +41 22 345 67 89.');
  });
});

describe('nameHint stability', () => {
  it('a global-flagged custom nameHint yields the same result across repeated calls', async () => {
    // A naive `.test()` on a /g regex alternates true/false; the Anonymizer must strip the flag.
    const a = new Anonymizer({ nameHint: /\bDr\.\s\w+/g, patterns: presets.swiss });
    const text = 'Rendez-vous avec Dr. Meyer'; // no structured PII, only the name hint
    const r1 = await a.anonymize(text);
    const r2 = await a.anonymize(text);
    const r3 = await a.anonymize(text);
    // No LLM → nothing is actually redacted, but behavior must be identical every time.
    expect(r1).toEqual(r2);
    expect(r2).toEqual(r3);
  });
});