text: const path = require('path')
  const { isPlainObject } = require('lodash')
  const supertest = require('supertest')
  const app = require('../../server')
  const enterpriseServerReleases = require('../../lib/enterprise-server-releases')
  const nonEnterpriseDefaultVersion = require('../../lib/non-enterprise-default-version')
  const Page = require('../../lib/page')
  const { get } = require('../helpers/supertest')
  
  describe('redirects', () => {
    jest.setTimeout(5 * 60 * 1000)
  
    let redirects
    beforeAll(async (done) => {
      const res = await get('/en?json=redirects')
      redirects = JSON.parse(res.text)
      done()
    })
  
    test('page.redirects is an array', async () => {
      const page = await Page.init({
        relativePath: 'github/collaborating-with-issues-and-pull-requests/about-branches.md',
        basePath: path.join(__dirname, '../../content'),
        languageCode: 'en'
      })
      page.buildRedirects()
      expect(isPlainObject(page.redirects)).toBe(true)
    })
  
    test('dotcom homepage page.redirects', async () => {
      const page = await Page.init({
        relativePath: 'github/index.md',
        basePath: path.join(__dirname, '../../content'),
        languageCode: 'en'
      })
      page.buildRedirects()
      expect(page.redirects[`/en/${nonEnterpriseDefaultVersion}/github`]).toBe('/en/github')
      expect(page.redirects['/articles']).toBe('/en/github')
      expect(page.redirects['/en/articles']).toBe('/en/github')
      expect(page.redirects[`/en/${nonEnterpriseDefaultVersion}/articles`]).toBe('/en/github')
      expect(page.redirects['/common-issues-and-questions']).toBe('/en/github')
      expect(page.redirects['/en/common-issues-and-questions']).toBe('/en/github')
      expect(page.redirects[`/en/enterprise/${enterpriseServerReleases.latest}/user/articles`]).toBe(`/en/enterprise-server@${enterpriseServerReleases.latest}/github`)
      expect(page.redirects[`/en/enterprise/${enterpriseServerReleases.latest}/user/common-issues-and-questions`]).toBe(`/en/enterprise-server@${enterpriseServerReleases.latest}/github`)
    })
  
    test('converts single `redirect_from` strings values into arrays', async () => {
      const page = await Page.init({
        relativePath: 'github/collaborating-with-issues-and-pull-requests/about-conversations-on-github.md',
        basePath: path.join(__dirname, '../../content'),
        languageCode: 'en'
      })
      page.buildRedirects()
      const expected = '/en/github/collaborating-with-issues-and-pull-requests/about-conversations-on-github'
      expect(page.redirects['/en/articles/about-discussions-in-issues-and-pull-requests']).toBe(expected)
    })
  
    describe('query params', () => {
      test('are preserved in redirected URLs', async () => {
        const res = await get('/enterprise/admin?query=pulls')
        expect(res.statusCode).toBe(301)
        const expected = `/en/enterprise-server@${enterpriseServerReleases.latest}/admin?query=pulls`
        expect(res.headers.location).toBe(expected)
      })
  
      test('have q= converted to query=', async () => {
        const res = await get('/en/enterprise/admin?q=pulls')
        expect(res.statusCode).toBe(301)
        const expected = `/en/enterprise-server@${enterpriseServerReleases.latest}/admin?query=pulls`
        expect(res.headers.location).toBe(expected)
      })
  
      test('work with redirected search paths', async () => {
        const res = await get('/en/enterprise/admin/search?utf8=%E2%9C%93&query=pulls')
        expect(res.statusCode).toBe(301)
        const expected = `/en/enterprise-server@${enterpriseServerReleases.latest}/admin?utf8=%E2%9C%93&query=pulls`
        expect(res.headers.location).toBe(expected)
      })
  
      test('do not work on other paths that include "search"', async () => {
        const reqPath = `/en/enterprise-server@${enterpriseServerReleases.latest}/admin/configuration/enabling-unified-search-between-github-enterprise-server-and-githubcom`
        const res = await get(reqPath)
        expect(res.statusCode).toBe(200)
      })
  
      test('work on deprecated versions', async () => {
        const res = await get('/enterprise/2.12/admin/search?utf8=%E2%9C%93&q=pulls')
        expect(res.statusCode).toBe(200)
      })
    })
  
    describe('trailing slashes', () => {
      test('are absent from all redirected URLs', async () => {
        const keys = Object.keys(redirects)
        expect(keys.length).toBeGreaterThan(100)
        expect(keys.every(key => !key.endsWith('/') || key === '/')).toBe(true)
      })
  
      test('are absent from all destination URLs', async () => {
        const values = Object.values(redirects)
        expect(values.length).toBeGreaterThan(100)
        expect(values.every(value => !value.endsWith('/'))).toBe(true)
      })
  
      test('are redirected for HEAD requests (not just GET requests)', async () => {
        const res = await supertest(app).head('/articles/closing-issues-via-commit-messages/')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe('/articles/closing-issues-via-commit-messages')
      })
    })
  
    describe('external redirects', () => {
      test('work for top-level request paths', async () => {
        const res = await get('/git-ready')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe('http://gitready.com/')
      })
  
      test('work for article-level request paths', async () => {
        const res = await get('/articles/testing-webhooks')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe('http://developer.github.com/webhooks/testing/')
      })
    })
  
    describe('localized redirects', () => {
      test('redirect_from for renamed pages', async () => {
        const { res } = await get('/ja/desktop/contributing-to-projects/changing-a-remote-s-url-from-github-desktop')
        expect(res.statusCode).toBe(301)
        const expected = '/ja/desktop/contributing-and-collaborating-using-github-desktop/changing-a-remotes-url-from-github-desktop'
        expect(res.headers.location).toBe(expected)
      })
    })
  
    describe('enterprise home page', () => {
      const enterpriseHome = `/en/enterprise-server@${enterpriseServerReleases.latest}`
      const japaneseEnterpriseHome = enterpriseHome.replace('/en/', '/ja/')
  
      test('/enterprise', async () => {
        const res = await get('/enterprise')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseHome)
      })
  
      test('no language code redirects to english', async () => {
        const res = await get(`/enterprise/${enterpriseServerReleases.latest}`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseHome)
      })
  
      test('no version redirects to latest version', async () => {
        const res = await get('/en/enterprise')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseHome)
      })
  
      test('no version redirects to latest version (japanese)', async () => {
        const res = await get('/ja/enterprise')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(japaneseEnterpriseHome)
      })
  
      test('hardcoded @latest redirects to latest version', async () => {
        const res = await get('/en/enterprise-server@latest')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseHome)
      })
    })
  
    describe('2.13+ deprecated enterprise', () => {
      test('no language code redirects to english', async () => {
        const res = await get('/enterprise/2.13')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe('/en/enterprise/2.13')
      })
  
      test('admin/guides redirects to admin', async () => {
        const res = await get('/en/enterprise/2.13/admin/guides')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe('/en/enterprise/2.13/admin')
      })
    })
  
    describe('<2.12 deprecated enterprise', () => {
      test('english language code redirects to no language code', async () => {
        const res = await get('/en/enterprise/2.12')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe('/enterprise/2.12')
      })
  
      test('frontmatter redirect', async () => {
        const res = await get('/enterprise/2.12/user/articles/github-flavored-markdown')
        expect(res.statusCode).toBe(301)
        expect(res.text).toContain('location=\'/enterprise/2.12/user/categories/writing-on-github/\'')
      })
    })
  
    describe('enterprise admin', () => {
      const enterpriseAdmin = `/en/enterprise-server@${enterpriseServerReleases.latest}/admin`
      const japaneseEnterpriseAdmin = enterpriseAdmin.replace('/en/', '/ja/')
  
      test('no language code redirects to english', async () => {
        const res = await get(`/enterprise/${enterpriseServerReleases.latest}/admin`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseAdmin)
      })
  
      test('no version redirects to latest version', async () => {
        const res = await get('/en/enterprise/admin')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseAdmin)
      })
  
      test('admin/guides redirects to admin', async () => {
        const res = await get(`/en/enterprise/${enterpriseServerReleases.latest}/admin/guides`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseAdmin)
      })
  
      test('no version plus admin/guides redirects to admin on latest version', async () => {
        const res = await get('/en/enterprise/admin/guides')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseAdmin)
      })
  
      test('admin/guides redirects to admin in redirects', async () => {
        const res = await get(`/en/enterprise/${enterpriseServerReleases.latest}/admin/guides/installation/upgrading-github-enterprise`)
        expect(res.statusCode).toBe(301)
        const redirectRes = await get(res.headers.location)
        expect(redirectRes.statusCode).toBe(200)
        const expected = `/en/enterprise-server@${enterpriseServerReleases.latest}/admin/enterprise-management/upgrading-github-enterprise-server`
        expect(res.headers.location).toBe(expected)
      })
  
      test('no version redirects to latest version (japanese)', async () => {
        const res = await get('/ja/enterprise/admin')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(japaneseEnterpriseAdmin)
      })
  
      test('admin/guides redirects to admin (japanese)', async () => {
        const res = await get(`/ja/enterprise/${enterpriseServerReleases.latest}/admin/guides`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(japaneseEnterpriseAdmin)
      })
    })
  
    describe('enterprise user homepage', () => {
      const enterpriseUser = `/en/enterprise-server@${enterpriseServerReleases.latest}/github`
      const japaneseEnterpriseUser = enterpriseUser.replace('/en/', '/ja/')
  
      test('no product redirects to GitHub.com product', async () => {
        const res = await get(`/en/enterprise/${enterpriseServerReleases.latest}/user`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseUser)
      })
  
      test('no language code redirects to english', async () => {
        const res = await get(`/enterprise/${enterpriseServerReleases.latest}/user/github`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseUser)
      })
  
      test('no version redirects to latest version', async () => {
        const res = await get('/en/enterprise/user/github')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(enterpriseUser)
      })
  
      test('no version redirects to latest version (japanese)', async () => {
        const res = await get('/ja/enterprise/user/github')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(japaneseEnterpriseUser)
      })
    })
  
    describe('enterprise user article', () => {
      const userArticle = `/en/enterprise-server@${enterpriseServerReleases.latest}/github/getting-started-with-github/set-up-git`
      const japaneseUserArticle = userArticle.replace('/en/', '/ja/')
  
      test('no product redirects to GitHub.com product on the latest version', async () => {
        const res = await get(`/en/enterprise/${enterpriseServerReleases.latest}/user/articles/set-up-git`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(userArticle)
      })
  
      // 2.16 was the first version where we moved /articles/foo to /github/<category>/foo
      test('no product does not redirect to GitHub.com product in <=2.15', async () => {
        const res = await get('/en/enterprise/2.15/user/articles/set-up-git')
        expect(res.statusCode).toBe(200)
      })
  
      test('no language code redirects to english', async () => {
        const res = await get(`/enterprise/${enterpriseServerReleases.latest}/user/github/getting-started-with-github/set-up-git`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(userArticle)
      })
  
      test('no version redirects to latest version', async () => {
        const res = await get('/en/enterprise/user/github/getting-started-with-github/set-up-git')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(userArticle)
      })
  
      test('no version redirects to latest version (japanese)', async () => {
        const res = await get('/ja/enterprise/user/github/getting-started-with-github/set-up-git')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(japaneseUserArticle)
      })
    })
  
    describe('enterprise user article with frontmatter redirect', () => {
      const userArticle = `/en/enterprise-server@${enterpriseServerReleases.latest}/github/getting-started-with-github/access-permissions-on-github`
      const redirectFromPath = '/articles/what-are-the-different-access-permissions'
      const japaneseUserArticle = userArticle.replace('/en/', '/ja/')
  
      test('redirects to expected article', async () => {
        const res = await get(`/en/enterprise/${enterpriseServerReleases.latest}/user${redirectFromPath}`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(userArticle)
      })
  
      test('no language code redirects to english', async () => {
        const res = await get(`/enterprise/${enterpriseServerReleases.latest}/user${redirectFromPath}`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(userArticle)
      })
  
      test('no version redirects to latest version', async () => {
        const res = await get(`/en/enterprise/user${redirectFromPath}`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(userArticle)
      })
  
      test('no version redirects to latest version (japanese)', async () => {
        const res = await get(`/ja/enterprise/user${redirectFromPath}`)
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(japaneseUserArticle)
      })
    })
  
    describe('desktop guide', () => {
      const desktopGuide = '/en/desktop/contributing-and-collaborating-using-github-desktop/creating-an-issue-or-pull-request'
      const japaneseDesktopGuides = desktopGuide.replace('/en/', '/ja/')
  
      test('no language code redirects to english', async () => {
        const res = await get('/desktop/contributing-and-collaborating-using-github-desktop/creating-an-issue-or-pull-request')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(desktopGuide)
      })
  
      test('desktop/guides redirects to desktop', async () => {
        const res = await get('/en/desktop/guides/contributing-and-collaborating-using-github-desktop/creating-an-issue-or-pull-request')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(desktopGuide)
      })
  
      test('desktop/guides redirects to desktop (japanese)', async () => {
        const res = await get('/ja/desktop/guides/contributing-and-collaborating-using-github-desktop/creating-an-issue-or-pull-request')
        expect(res.statusCode).toBe(301)
        expect(res.headers.location).toBe(japaneseDesktopGuides)
      })
    })
  })
  