import test from 'node:test';
import assert from 'node:assert/strict';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const lookup = require('../chrome-extension/ltjt-order-assistant/product-lookup.js');
const sourceRegion = require('../chrome-extension/ltjt-order-assistant/source-region.js');

function candidate(cpid, label) {
  return { cpid, label, name: lookup.productNameAndDuration(label).name, duration: lookup.productNameAndDuration(label).duration };
}

test('matches the ERP product name and duration as separate fields', () => {
  const row = candidate('365', '江西老挝 10D9N');
  const result = lookup.productQueryMatch(row, '江西老挝10D');
  assert.equal(result.matched, true);
  assert.equal(row.name, '江西老挝');
  assert.equal(row.duration, '10D9N');
  assert.match(result.rule, /^unique_(contiguous|name_duration_tokens)$/);
});

test('does not confuse a reversed route fragment with the 江西 product', () => {
  const result = lookup.productQueryMatch(candidate('419', '尊享邂逅老挝--江西--9.10月份 8D7N'), '江西老挝10D');
  assert.equal(result.matched, false);
});

test('matches punctuation-separated Chinese fragments and Chinese duration aliases', () => {
  const result = lookup.productQueryMatch(candidate('412', '老挝行程--广东 8D7N'), '老挝广东8天');
  assert.equal(result.matched, true);
  assert.equal(result.rule, 'unique_name_duration_tokens');
});

test('preserves numeric product names while matching a duration suffix', () => {
  const result = lookup.productQueryMatch(candidate('368', '尊享老挝3.10 8D7N'), '尊享老挝3.10');
  assert.equal(result.matched, true);
  assert.equal(result.rule, 'unique_contiguous');
});

test('keeps unique-match safety when multiple candidates satisfy a shorthand', () => {
  const matches = lookup.matchProductCandidates([
    candidate('401', '老挝广东 8D7N'),
    candidate('402', '老挝广东 8D6N')
  ], '老挝广东8D');
  assert.equal(matches.length, 2);
});

test('keeps source-region tokens as a customer-only fallback, not a product/customer gate', () => {
  const result = sourceRegion.uniqueSourceRegionCandidate([
    { id: '661', name: 'LW衡阳国旅云南分社（广东市场）' }
  ], { name: '广东衡阳客户' });
  assert.equal(result.ok, true);
  assert.equal(result.reason, 'unique_source_region_candidate');
  assert.deepEqual(result.source_tokens, ['广东', '衡阳']);
  assert.equal(result.candidate.id, '661');
});

test('resolves a non-canonical customer phrase by all source-region tokens only when unique', () => {
  const candidates = [
    { id: '518', name: 'LW衡阳国旅（北京市场）' },
    { id: '661', name: 'LW衡阳国旅云南分社（广东市场）' },
    { id: '272', name: '广东光大国际正东分公司' }
  ];
  const result = sourceRegion.uniqueSourceRegionCandidate(candidates, { name: '广东衡阳客户' });
  assert.equal(result.ok, true);
  assert.equal(result.match_count, 1);
  assert.deepEqual(result.source_tokens, ['广东', '衡阳']);
  assert.equal(result.candidate.id, '661');
});

test('does not guess when source-region keywords match multiple customer masters', () => {
  const result = sourceRegion.uniqueSourceRegionCandidate([
    { id: '661', name: 'LW衡阳国旅云南分社（广东市场）' },
    { id: '1661', name: 'LW衡阳国旅深圳分社（广东市场）' }
  ], { name: '广东衡阳客户' });
  assert.equal(result.ok, false);
  assert.equal(result.reason, 'ambiguous_source_region_candidates');
  assert.equal(result.match_count, 2);
  assert.equal(result.candidate, null);
});