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import { test, expect } from '@playwright/test'
import {
  checkWordPress,
  WORDPRESS_PLUGIN_VERSION_SELECTOR
} from '../../installation_support/check-wordpress'

function mockDocument(html, hasMetaTag) {
  return {
    documentElement: { outerHTML: `<html>${html}</html>` },
    querySelector: (selector) => {
      if (selector === WORDPRESS_PLUGIN_VERSION_SELECTOR) {
        return hasMetaTag ? {} : null
      }
      return null
    }
  }
}

test.describe('checkWordPress (wordpressPlugin, wordPressLikely)', () => {
  test('handles document undefined', () => {
    const result = checkWordPress(undefined)

    expect(result.wordpressPlugin).toBe(false)
    expect(result.wordpressLikely).toBe(false)
  })

  test('handles document.querySelector undefined', () => {
    const document = { documentElement: { outerHTML: '<html></html>' } }
    const result = checkWordPress(document)

    expect(result.wordpressPlugin).toBe(false)
    expect(result.wordpressLikely).toBe(false)
  })

  test('handles document.documentElement undefined', () => {
    const document = { documentElement: undefined, querySelector: (_) => null }
    const result = checkWordPress(document)

    expect(result.wordpressPlugin).toBe(false)
    expect(result.wordpressLikely).toBe(false)
  })

  test('both false when no WordPress indicators present', () => {
    const document = mockDocument('<head></head><body></body>', false)
    const result = checkWordPress(document)

    expect(result.wordpressPlugin).toBe(false)
    expect(result.wordpressLikely).toBe(false)
  })

  test('both true if WordPress plugin version meta tag detected', () => {
    const document = mockDocument('<head></head><body></body>', true)
    const result = checkWordPress(document)

    expect(result.wordpressPlugin).toBe(true)
    expect(result.wordpressLikely).toBe(true)
  })

  test('detects wordpressLikely by wp-content signature', () => {
    const document = mockDocument(
      '<head><script src="/wp-content/themes/mytheme/script.js"></script></head>',
      false
    )
    const result = checkWordPress(document)

    expect(result.wordpressPlugin).toBe(false)
    expect(result.wordpressLikely).toBe(true)
  })

  test('detects wordpressLikely by wp-includes signature', () => {
    const document = mockDocument(
      '<head><link rel="stylesheet" href="/wp-includes/css/style.css"></head>',
      false
    )
    const result = checkWordPress(document)

    expect(result.wordpressPlugin).toBe(false)
    expect(result.wordpressLikely).toBe(true)
  })

  test('detects wordpressLikely by wp-json signature', () => {
    const document = mockDocument(
      '<body><script>fetch("/wp-json/wp/v2/posts")</script></body>',
      false
    )
    const result = checkWordPress(document)

    expect(result.wordpressPlugin).toBe(false)
    expect(result.wordpressLikely).toBe(true)
  })

  test('detects wordpressLikely by multiple signatures', () => {
    const document = mockDocument(
      `
        <head>
          <script src="/wp-content/themes/mytheme/script.js"></script>
        </head>
        <body>
          <script>fetch("/wp-json/wp/v2/posts")</script>
        </body>
      `,
      false
    )

    const result = checkWordPress(document)

    expect(result.wordpressPlugin).toBe(false)
    expect(result.wordpressLikely).toBe(true)
  })
})