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51 lines
2.0 KiB
JavaScript
51 lines
2.0 KiB
JavaScript
const findPage = require('../lib/find-page')
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const getApplicableVersions = require('../lib/get-applicable-versions')
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const { getVersionedPathWithLanguage } = require('../lib/path-utils')
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// this middleware adds properties to the context object
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module.exports = async (req, res, next) => {
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if (!req.context.page) return next()
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if (!(req.context.page.relativePath.endsWith('index.md') || req.context.page.layout === 'product-landing')) return next()
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req.context.gettingStartedLinks = await getLinkData(req.context.page.rawGettingStartedLinks, req.context)
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req.context.popularLinks = await getLinkData(req.context.page.rawPopularLinks, req.context)
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req.context.guideLinks = await getLinkData(req.context.page.rawGuideLinks, req.context)
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return next()
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}
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// rawLinks is an array of paths: [ '/foo' ]
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// we need to convert it to an array of localized objects: [ { href: '/en/foo', title: 'Foo', intro: 'Description here' } ]
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async function getLinkData (rawLinks, context) {
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if (!rawLinks) return
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const links = []
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for (const link of rawLinks) {
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const href = link.href
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? getVersionedPathWithLanguage(link.href, context.currentVersion, context.currentLanguage)
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: getVersionedPathWithLanguage(link, context.currentVersion, context.currentLanguage)
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const linkedPage = findPage(href, context.pages, context.redirects, context.currentLanguage)
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if (!linkedPage) continue
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const applicableVersions = process.env.FEATURE_NEW_VERSIONS
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? getApplicableVersions(linkedPage.versions, linkedPage.fullPath)
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: getApplicableVersions(linkedPage.productVersions, linkedPage.fullPath)
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// skip link if this is not the homepage and the link's versions do not include the current version
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if (context.currentVersion !== 'homepage' && !applicableVersions.includes(context.currentVersion)) continue
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const opts = { textOnly: true, encodeEntities: true }
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links.push({
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href,
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title: await linkedPage.renderTitle(context, opts),
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intro: await linkedPage.renderProp('intro', context, opts)
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})
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}
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return links
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}
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