import { extractReadingWords, readNcloudSessionToken } from './external-reading';
import { normalizeReadingParams } from '../features/english-reading/reading.utils';

describe('external reading migration', () => {
  it('extracts source Title values from serialized xxqs data', () => {
    expect(extractReadingWords('[{"Title":"apple"},{"Title":" book "}]')).toEqual(['apple', 'book']);
    expect(extractReadingWords('{"0":{"Title":"cat"}}')).toEqual(['cat']);
    expect(extractReadingWords('not-json')).toEqual([]);
  });

  it('reads the original NCloud cache key without failing on invalid data', () => {
    const storage = { getItem: () => JSON.stringify({ sessionToken: 'session-123' }) };
    expect(readNcloudSessionToken(storage)).toBe('session-123');
    expect(readNcloudSessionToken({ getItem: () => '{' })).toBe('');
  });

  it('accepts packed legacy params in the internal reading route', () => {
    const value = JSON.stringify({ wordList: ['one'], token: 'token' });
    expect(normalizeReadingParams({ params: value }).wordList).toEqual(['one']);
    expect(normalizeReadingParams({ params: encodeURIComponent(value) }).token).toBe('token');
  });
});