/*
 * Copyright (c) 2022 Snowplow Analytics Ltd, 2010 Anthon Pang
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright notice, this
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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import { newTracker, getDomainSessionId } from '../src';

describe('Browser Tracker API: #getDomainSessionId', () => {
  let cookieJar: string;

  beforeAll(() => {
    cookieJar = '';
    jest.spyOn(document, 'cookie', 'set').mockImplementation((cookie) => {
      cookieJar += cookie;
    });
    jest.spyOn(document, 'cookie', 'get').mockImplementation(() => cookieJar);
  });

  afterEach(() => {
    cookieJar = '';
  });

  afterAll(() => {
    jest.restoreAllMocks();
  });

  it('exposes the domain session id of a named tracker', () => {
    const tracker = newTracker('sp-api-1', '', { stateStorageStrategy: 'cookie' });
    const sessionId = tracker?.getDomainSessionId();

    expect(sessionId).toMatch(/^[0-9a-f-]+$/);
    expect(getDomainSessionId('sp-api-1')).toEqual(sessionId);
  });

  it('defaults to the first initialised tracker when no id is provided', () => {
    // 'sp-api-1' is the only/first tracker registered in this module
    expect(getDomainSessionId()).toEqual(getDomainSessionId('sp-api-1'));
  });

  it('returns undefined for an unknown tracker id', () => {
    expect(getDomainSessionId('missing-tracker')).toBeUndefined();
  });
});