import { beforeEach, expect, test } from 'vitest';
import { MAX_VERSIONS, listNoteVersions, recordNoteVersion } from './noteHistory.js';

beforeEach(() => localStorage.clear());

test('versions are kept newest first, and blanks and repeats are skipped', () => {
  recordNoteVersion('c1', 'observation', 'first', 1);
  recordNoteVersion('c1', 'observation', 'first', 2); // same as the newest
  recordNoteVersion('c1', 'observation', '   ', 3); // blank
  recordNoteVersion('c1', 'observation', 'second', 4);
  expect(listNoteVersions('c1', 'observation').map((v) => v.text)).toEqual(['second', 'first']);
  expect(listNoteVersions('c1', 'application')).toEqual([]);
  expect(listNoteVersions('c2', 'observation')).toEqual([]);
});

test('only the latest versions are kept', () => {
  for (let i = 0; i < MAX_VERSIONS + 5; i += 1) recordNoteVersion('c1', 'observation', `v${i}`, i);
  const list = listNoteVersions('c1', 'observation');
  expect(list).toHaveLength(MAX_VERSIONS);
  expect(list[0].text).toBe(`v${MAX_VERSIONS + 4}`);
});

test('a damaged store reads as empty', () => {
  localStorage.setItem('note-history:c1:observation', '{nope');
  expect(listNoteVersions('c1', 'observation')).toEqual([]);
});