import assert from 'node:assert/strict';
import {
  applyVocabularySummaryItemFilters,
  buildVocabularySummaryFilters
} from './vocabularyAuditFilters';

const uniqueWordFilter = buildVocabularySummaryFilters({ minUniqueWords: '40' });
assert.deepEqual(uniqueWordFilter, {
  minUniqueWords: 40,
  userMatchStages: [],
  baseMatch: {}
});

const legacyFilter = buildVocabularySummaryFilters({ minCorrectWords: '35' });
assert.deepEqual(legacyFilter, {
  minUniqueWords: 35,
  userMatchStages: [],
  baseMatch: {}
});

const emptyFilter = buildVocabularySummaryFilters({});
assert.deepEqual(emptyFilter, {
  minUniqueWords: undefined,
  userMatchStages: [],
  baseMatch: {}
});

const studentFilter = buildVocabularySummaryFilters({ studentNo: 'A.12' });
assert.deepEqual(studentFilter.userMatchStages, [{
  $match: {
    'user.username': {
      $regex: 'A\\.12',
      $options: 'i'
    }
  }
}]);

const invalidFilter = buildVocabularySummaryFilters({ minUniqueWords: '4.5' });
assert.deepEqual(invalidFilter, { error: '去重单词数量必须是正整数' });

const filteredItems = applyVocabularySummaryItemFilters([
  { userId: 'below', uniqueWords: 39 },
  { userId: 'equal', uniqueWords: 40 },
  { userId: 'above', uniqueWords: 41 }
], 40);
assert.deepEqual(filteredItems.map(item => item.userId), ['equal', 'above']);

console.log('vocabularyAuditFilters tests passed');