'use strict';

const test = require('node:test');
const assert = require('node:assert/strict');
const { hasBuyingIntent, looksLikeLead, missingLeadContacts, detectLanguage, appendLeadFollowup, alreadyAsksForLead } = require('../src/lead-intent');

test('lead-intent: product + quantity is buying intent', () => {
  assert.equal(hasBuyingIntent('I want 500 pieces of stainless steel rings'), true);
  assert.equal(hasBuyingIntent('Do you have rings?'), false);
});

test('lead-intent: missing company/contact', () => {
  assert.deepEqual(missingLeadContacts({}), ['company', 'contact']);
  assert.deepEqual(missingLeadContacts({ company: 'ACME', email: 'a@b.com' }), []);
});

test('lead-intent: localized followup appended once', () => {
  const lang = detectLanguage('我想采购500件戒指');
  assert.equal(lang, 'zh');
  const out = appendLeadFollowup('好的，这里有几款戒指。', lang);
  assert.match(out, /公司名称/);
  assert.equal(appendLeadFollowup(out, lang), out);
});

test('lead-intent: detects existing ask in reply', () => {
  assert.equal(alreadyAsksForLead('Could you share your company name and email?'), true);
  assert.equal(alreadyAsksForLead('Here are some rings.'), false);
});

test('lead-intent: company/contact signal counts as a lead even without unit-quantity', () => {
  // 单位不规整（500 stainless steel rings）时 hasBuyingIntent 为 false，但已是明确线索
  assert.equal(hasBuyingIntent('We are Acme GmbH, contact Anna Klein. We need 500 stainless steel rings.'), false);
  assert.equal(looksLikeLead('We are Acme GmbH, contact Anna Klein. We need 500 stainless steel rings.'), true);
  assert.equal(looksLikeLead('Our company is Test Buyer BV, contact name Jan Jansen.'), false); // 没有商品词
  assert.equal(looksLikeLead('Do you have rings?'), false); // 没有公司/联系人信号
});