import { test } from '@japa/runner'
import {
  ancestorPaths,
  ancestorsAlreadyLoaded,
  BREADCRUMB_PARENT_GROUP_KEYS,
} from '#base_modules/WebManager/services/breadcrumb_paths'
import { BREADCRUMB_PAGE_TYPE_PARENTS } from '#base_modules/WebManager/config/general'

/**
 * These decide which rows the breadcrumb query asks for. Miss a path here and the trail
 * silently loses a level, because the walk can only choose from what was loaded.
 */
test.group('Web Manager breadcrumb candidate paths', () => {
  test('climbs every shorter prefix, longest first, then home', ({ assert }) => {
    assert.deepEqual(ancestorPaths('blog/post/hello'), ['blog/post', 'blog', ''])
  })

  test('never offers the page itself as its own parent', ({ assert }) => {
    assert.notInclude(ancestorPaths('about'), 'about')
    assert.notInclude(ancestorPaths('blog/post'), 'blog/post')
  })

  test('a top-level page and the home page both fall back to home', ({ assert }) => {
    assert.deepEqual(ancestorPaths('about'), [''])
    assert.deepEqual(ancestorPaths(''), [''])
  })

  test('tolerates stray slashes in a stored path', ({ assert }) => {
    assert.deepEqual(ancestorPaths('/blog/post/'), ancestorPaths('blog/post'))
    assert.deepEqual(ancestorPaths('/blog/post/'), ['blog', ''])
  })

  test('covers the group keys a page type can be re-parented onto', ({ assert }) => {
    assert.includeMembers(BREADCRUMB_PARENT_GROUP_KEYS, Object.values(BREADCRUMB_PAGE_TYPE_PARENTS))
    assert.equal(
      BREADCRUMB_PARENT_GROUP_KEYS.length,
      new Set(BREADCRUMB_PARENT_GROUP_KEYS).size,
      'duplicate group keys would widen the query for nothing'
    )
  })
})

test.group('Web Manager breadcrumb candidate reuse', () => {
  test('walking up a prefix reuses the rows already loaded', ({ assert }) => {
    assert.isTrue(ancestorsAlreadyLoaded('blog/post', ['blog/post/hello']))
    assert.isTrue(ancestorsAlreadyLoaded('blog', ['blog/post/hello']))
    assert.isTrue(ancestorsAlreadyLoaded('', ['blog/post/hello']))
    assert.isTrue(ancestorsAlreadyLoaded('blog/post/hello', ['blog/post/hello']))
  })

  test('a jump to an unrelated branch needs its own query', ({ assert }) => {
    assert.isFalse(ancestorsAlreadyLoaded('company/blog', ['news/hello']))
    assert.isFalse(ancestorsAlreadyLoaded('blog', []))
  })

  test('does not mistake a shared name prefix for an ancestor', ({ assert }) => {
    assert.isFalse(ancestorsAlreadyLoaded('blogging', ['blog/post']))
  })
})