// @vitest-environment node
import { test, expect } from 'vitest';
import { buildAccountExport, accountExportName, BACKUP_APP } from './accountExport.js';
import { listSnapshots, pruneSnapshots } from './backups.js';
import { mkdtempSync, writeFileSync, readdirSync } from 'fs';
import { tmpdir } from 'os';
import { join } from 'path';

test('the account export has the same shape as the in-app backup', () => {
  const out = buildAccountExport({ email: 'a@b.co' }, {
    projects: () => [{ id: 'p', title: 'T', chapters: [] }],
    prefs: () => ({ colorLabels: { v: { '#fef08a': 'Promises' }, at: 1 } }),
    marks: () => ({ bookmarks: { 'JHN-3-16': '#fff' }, highlights: [{ id: 'h' }] }),
    ink: () => ({ JHN_3: [[1, 2]] }),
    plans: () => ({ progress: [{ id: 'x' }] }),
  }, new Date('2026-10-06T10:00:00Z'));
  expect(out.app).toBe(BACKUP_APP);
  expect(out.account).toBe('a@b.co');
  expect(out.reader.colorLabels).toEqual({ '#fef08a': 'Promises' });
  expect(out.reader.bookmarks['JHN-3-16']).toBe('#fff');
  expect(out.readingPlans).toEqual({ progress: [{ id: 'x' }], customPlans: [], activity: [] });
  expect(accountExportName(new Date('2026-10-06T10:00:00Z'))).toBe('bible-study-account-2026-10-06.json');
});

test('only the newest snapshots are kept, and always at least one', () => {
  const dir = mkdtempSync(join(tmpdir(), 'snap-'));
  ['2026-10-01-03-00', '2026-10-02-03-00', '2026-10-03-03-00', '2026-10-04-03-00'].forEach((d) => writeFileSync(join(dir, `projects-${d}.db`), 'x'));
  writeFileSync(join(dir, 'notes.txt'), 'not a snapshot');
  expect(listSnapshots(dir).map((s) => s.name)[0]).toBe('projects-2026-10-04-03-00.db');
  expect(pruneSnapshots(2, dir)).toEqual(['projects-2026-10-02-03-00.db', 'projects-2026-10-01-03-00.db']);
  expect(pruneSnapshots(0, dir)).toHaveLength(1); // keep at least the newest
  expect(readdirSync(dir).sort()).toEqual(['notes.txt', 'projects-2026-10-04-03-00.db']);
});