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docs/lib/render-content/plugins/rewrite-local-links.js
Kevin Heis a92d820888 Remove remaining JSON requires (#20110)
* Remove remaining JSON requires

* Lint

* Update feature-flags.js
2021-06-23 14:57:50 -07:00

105 lines
4.3 KiB
JavaScript

const path = require('path')
const visit = require('unist-util-visit')
const { getPathWithoutLanguage, getVersionStringFromPath } = require('../../path-utils')
const { getNewVersionedPath } = require('../../old-versions-utils')
const patterns = require('../../patterns')
const { deprecated, latest } = require('../../enterprise-server-releases')
const nonEnterpriseDefaultVersion = require('../../non-enterprise-default-version')
const allVersions = require('../../all-versions')
const removeFPTFromPath = require('../../remove-fpt-from-path')
const supportedVersions = Object.keys(allVersions)
const supportedPlans = Object.values(allVersions).map(v => v.plan)
const readJsonFile = require('../../read-json-file')
const externalRedirects = Object.keys(readJsonFile('./lib/redirects/external-sites.json'))
// Matches any <a> tags with an href that starts with `/`
const matcher = node => (
node.type === 'element' &&
node.tagName === 'a' &&
node.properties &&
node.properties.href &&
node.properties.href.startsWith('/')
)
// Content authors write links like `/some/article/path`, but they need to be
// rewritten on the fly to match the current language and page version
module.exports = function rewriteLocalLinks ({ languageCode, version }) {
// There's no languageCode or version passed, so nothing to do
if (!languageCode || !version) return
return tree => {
visit(tree, matcher, node => {
const newHref = getNewHref(node, languageCode, version)
if (newHref) {
node.properties.href = newHref
}
})
}
}
function getNewHref (node, languageCode, version) {
const { href } = node.properties
// Exceptions to link rewriting
if (href.startsWith('/assets')) return
if (href.startsWith('/public')) return
if (externalRedirects.includes(href)) return
let newHref = href
// If the link has a hardcoded plan or version in it, do not update other than adding a language code
// Examples:
// /enterprise-server@2.20/rest/reference/oauth-authorizations
// /enterprise-server/rest/reference/oauth-authorizations (this redirects to the latest version)
// /enterprise-server@latest/rest/reference/oauth-authorizations (this redirects to the latest version)
const firstLinkSegment = href.split('/')[1]
if ([...supportedPlans, ...supportedVersions, 'enterprise-server@latest'].some(v => firstLinkSegment.startsWith(v))) {
newHref = path.join('/', languageCode, href)
}
// If the link includes a deprecated version, do not update other than adding a language code
// Example: /enterprise/11.10.340/admin/articles/upgrading-to-the-latest-release
const oldEnterpriseVersionNumber = href.match(patterns.getEnterpriseVersionNumber)
if (oldEnterpriseVersionNumber && deprecated.includes(oldEnterpriseVersionNumber[1])) {
newHref = path.join('/', languageCode, href)
}
if (newHref === href) {
// start clean with no language (TOC pages already include the lang codes via lib/liquid-tags/link.js)
const hrefWithoutLang = getPathWithoutLanguage(href)
// normalize any legacy links so they conform to new link structure
newHref = path.posix.join('/', languageCode, getNewVersionedPath(hrefWithoutLang))
// get the current version from the link
const versionFromHref = getVersionStringFromPath(newHref)
// ------ BEGIN ONE-OFF OVERRIDES ------//
// dotcom-only links always point to dotcom
if (node.properties.className && node.properties.className.includes('dotcom-only')) {
version = nonEnterpriseDefaultVersion
}
// desktop links always point to dotcom
if (patterns.desktop.test(hrefWithoutLang)) {
version = nonEnterpriseDefaultVersion
}
// admin links on dotcom always point to Enterprise
if (patterns.adminProduct.test(hrefWithoutLang) && version === nonEnterpriseDefaultVersion) {
version = `enterprise-server@${latest}`
}
// insights links on dotcom always point to Enterprise
if (patterns.insightsProduct.test(hrefWithoutLang) && version === nonEnterpriseDefaultVersion) {
version = `enterprise-server@${latest}`
}
// ------ END ONE-OFF OVERRIDES ------//
// update the version in the link
newHref = removeFPTFromPath(newHref.replace(versionFromHref, version))
}
newHref = newHref.replace(patterns.trailingSlash, '$1')
return newHref
}