import {
  getFlatSideBarLinks,
  getSidebar,
  hasActiveLink
} from 'client/theme-default/support/sidebar'

describe('client/theme-default/support/sidebar', () => {
  describe('getSidebar', () => {
    const root = [
      {
        text: 'A',
        collapsible: true,
        items: [{ text: 'A', link: '' }]
      },
      {
        text: 'B',
        items: [{ text: 'B', link: '' }]
      }
    ]

    const another = [
      {
        text: 'C',
        items: [{ text: 'C', link: '' }]
      }
    ]

    describe('normal sidebar sort', () => {
      const normalSidebar = {
        '/': root,
        '/multi-sidebar/': another
      }

      test('gets `/` sidebar', () => {
        expect(getSidebar(normalSidebar, '/')).toStrictEqual(root)
      })

      test('gets `/multi-sidebar/` sidebar', () => {
        expect(getSidebar(normalSidebar, '/multi-sidebar/')).toStrictEqual(
          another
        )
      })

      test('gets `/` sidebar again', () => {
        expect(getSidebar(normalSidebar, '/some-entry.html')).toStrictEqual(
          root
        )
      })
    })

    describe('reversed sidebar sort', () => {
      const reversedSidebar = {
        '/multi-sidebar/': another,
        '/': root
      }

      test('gets `/` sidebar', () => {
        expect(getSidebar(reversedSidebar, '/')).toStrictEqual(root)
      })

      test('gets `/multi-sidebar/` sidebar', () => {
        expect(getSidebar(reversedSidebar, '/multi-sidebar/')).toStrictEqual(
          another
        )
      })

      test('gets `/` sidebar again', () => {
        expect(getSidebar(reversedSidebar, '/some-entry.html')).toStrictEqual(
          root
        )
      })
    })

    describe('nested sidebar sort', () => {
      const nested = [
        {
          text: 'D',
          items: [{ text: 'D', link: '' }]
        }
      ]

      const nestedSidebar = {
        '/': root,
        '/multi-sidebar/': another,
        '/multi-sidebar/nested/': nested
      }

      test('gets `/` sidebar', () => {
        expect(getSidebar(nestedSidebar, '/')).toStrictEqual(root)
      })

      test('gets `/multi-sidebar/` sidebar', () => {
        expect(getSidebar(nestedSidebar, '/multi-sidebar/')).toStrictEqual(
          another
        )
      })

      test('gets `/multi-sidebar/nested/` sidebar', () => {
        expect(
          getSidebar(nestedSidebar, '/multi-sidebar/nested/')
        ).toStrictEqual(nested)
      })

      test('gets `/` sidebar again', () => {
        expect(getSidebar(nestedSidebar, '/some-entry.html')).toStrictEqual(
          root
        )
      })
    })

    test('applies base only to internal links', () => {
      expect(
        getSidebar(
          {
            '/en/': {
              base: '/en/',
              items: [
                {
                  text: 'Guide',
                  items: [
                    { text: 'Intro', link: 'intro' },
                    { text: 'Root', link: '/root' },
                    { text: 'External', link: 'https://example.com/' }
                  ]
                }
              ]
            }
          },
          '/en/intro'
        )
      ).toStrictEqual([
        {
          text: 'Guide',
          items: [
            { text: 'Intro', link: '/en/intro' },
            { text: 'Root', link: '/en/root' },
            { text: 'External', link: 'https://example.com/' }
          ]
        }
      ])
    })
  })

  describe('getFlatSideBarLinks', () => {
    test('flattens nested items and preserves link metadata', () => {
      const sidebar = [
        {
          text: 'Group',
          items: [
            { text: 'Intro', link: '/intro' },
            {
              text: 'External',
              link: 'https://example.com/',
              target: '_self',
              rel: 'noopener',
              docFooterText: 'Go external'
            }
          ]
        }
      ]

      expect(getFlatSideBarLinks(sidebar)).toStrictEqual([
        {
          text: 'Intro',
          link: '/intro',
          docFooterText: undefined,
          rel: undefined,
          target: undefined
        },
        {
          text: 'External',
          link: 'https://example.com/',
          docFooterText: 'Go external',
          rel: 'noopener',
          target: '_self'
        }
      ])
    })
  })

  describe('hasActiveLink', () => {
    test('checks `SidebarItem`', () => {
      const item = {
        text: 'Item 001',
        items: [
          { text: 'Item 001', link: '/active-1' },
          { text: 'Item 002', link: '/active-2' }
        ]
      }

      expect(hasActiveLink('active-1', '', item)).toBe(true)
      expect(hasActiveLink('inactive', '', item)).toBe(false)
    })

    test('checks `SidebarItem[]`', () => {
      const item = [
        {
          text: 'Item 001',
          items: [
            { text: 'Item 001', link: '/active-1' },
            { text: 'Item 002', link: '/active-2' }
          ]
        },
        {
          text: 'Item 002',
          items: [
            { text: 'Item 003', link: '/active-3' },
            { text: 'Item 004', link: '/active-4' }
          ]
        }
      ]

      expect(hasActiveLink('active-1', '', item)).toBe(true)
      expect(hasActiveLink('active-3', '', item)).toBe(true)
      expect(hasActiveLink('inactive', '', item)).toBe(false)
    })
  })
})