docs/src/components/LayoutDocs.js

import * as React from 'react'
import { MDXProvider } from '@mdx-js/react'
import { Nav } from 'components/Nav'
import { Sidebar } from 'components/Sidebar'
import { SidebarCategory } from 'components/SidebarCategory'
import { SidebarHeading } from 'components/SidebarHeading'
import { SidebarMobile } from 'components/SidebarMobile'
import { SidebarPost } from 'components/SidebarPost'
import { Sticky } from 'components/Sticky'
import { useIsMobile } from 'components/useIsMobile'
import { findRouteByPath } from 'lib/docs/findRouteByPath'
import { removeFromLast } from 'lib/docs/utils'
import { getRouteContext } from 'lib/get-route-context'
import { useRouter } from 'next/router'
import { Toc } from './Toc'
import s from './markdown.module.css'
import { Footer } from './Footer'
import { DocsPageFooter } from './DocsPageFooter'
import { Seo } from './Seo'
import MDXComponents from './MDXComponents'
import Head from 'next/head'
import { getManifest } from 'manifests/getManifest'

const getSlugAndTag = path => {
  const parts = path.split('/')

  if (parts[2] === '1.5.8' || parts[2] === '2.1.4') {
    return {
      tag: parts[2],
      slug: `/docs/${parts.slice(2).join('/')}`,
    }
  }

  return {
    slug: path,
  }
}

const addTagToSlug = (slug, tag) => {
  return tag ? `/docs/${tag}/${slug.replace('/docs/', '')}` : slug
}

export const LayoutDocs = props => {
  const router = useRouter()
  const { slug, tag } = getSlugAndTag(router.asPath)
  const { routes } = getManifest(tag)

  const _route = findRouteByPath(removeFromLast(slug, '#'), routes) // @ts-ignore

  const isMobile = useIsMobile()
  const { route, prevRoute, nextRoute } = getRouteContext(_route, routes)
  const title = route && `${route.title}`

  return (
    <>
      {tag && (
        <Head>
          <meta name="robots" content="noindex" />
        </Head>
      )}
      <div>
        {isMobile ? (
          <>
            <Nav />
            <Sticky shadow>
              <SidebarMobile>
                <SidebarRoutes isMobile={true} routes={routes} />
              </SidebarMobile>
            </Sticky>
          </>
        ) : (
          <Sticky>
            <Nav />
          </Sticky>
        )}
        <Seo
          title={props.meta.title || title}
          description={props.meta.description}
        />
        <div className="block">
          <>
            <div className="container mx-auto pb-12 pt-6 content">
              <div className="flex relative">
                {!isMobile && (
                  <Sidebar fixed>
                    <SidebarRoutes routes={routes} />
                  </Sidebar>
                )}

                <div className={s['markdown'] + ' w-full docs'}>
                  <h1 id="_top">{props.meta.title}</h1>
                  <MDXProvider components={MDXComponents}>
                    {props.children}
                  </MDXProvider>
                  <DocsPageFooter
                    href={route?.path || ''}
                    route={route}
                    prevRoute={prevRoute}
                    nextRoute={nextRoute}
                  />
                </div>
                {props.meta.toc === false ? null : (
                  <div
                    className="hidden xl:block ml-10 flex-shrink-0"
                    style={{
                      width: 200,
                    }}
                  >
                    <div className="sticky top-24">
                      <h4 className="font-semibold uppercase text-sm mb-2 mt-2 text-gray-500">
                        On this page
                      </h4>
                      <Toc title={props.meta.title} />
                    </div>
                  </div>
                )}
              </div>
            </div>
          </>
        </div>
      </div>
      <Footer />
      <style jsx>{`
        .docs {
          min-width: calc(100% - 300px - 1rem - 200px);
        }
      `}</style>
    </>
  )
}

function getCategoryPath(routes) {
  const route = routes.find(r => r.path)
  return route && removeFromLast(route.path, '/')
}

function SidebarRoutes({ isMobile, routes: currentRoutes, level = 1 }) {
  const { asPath } = useRouter()
  let { slug, tag } = getSlugAndTag(asPath)
  return currentRoutes.map(({ path, title, routes, heading, open }) => {
    if (routes) {
      const pathname = getCategoryPath(routes)
      const selected = slug.startsWith(pathname)
      const opened = selected || isMobile ? false : open

      if (heading) {
        return (
          <SidebarHeading key={'parent' + pathname} title={title}>
            <SidebarRoutes
              isMobile={isMobile}
              routes={routes}
              level={level + 1}
            />
          </SidebarHeading>
        )
      }

      return (
        <SidebarCategory
          key={pathname}
          isMobile={isMobile}
          level={level}
          title={title}
          selected={selected}
          opened={opened}
        >
          <SidebarRoutes
            isMobile={isMobile}
            routes={routes}
            level={level + 1}
          />
        </SidebarCategory>
      )
    }

    const pagePath = removeFromLast(path, '.')
    const pathname = addTagToSlug(pagePath, tag)
    const selected = slug === pagePath
    const route = {
      href: pagePath,
      path,
      title,
      pathname,
      selected,
    }
    return (
      <SidebarPost
        key={title}
        isMobile={isMobile}
        level={level}
        route={route}
      />
    )
  })
}

LayoutDocs.displayName = 'LayoutDocs'