feat(openapi): support versioned docs (#2177)

* fix: width style issue with version switcher

* feat: add versionSwitcherSlot in OpenApiOverview

* feat: implement get-version-switcher-props

* feat: generate versionSwitcherProps, pass to view

* chore: rename prop for clarity

* feat: add NoIndexTagIfVersioned

* refactor: rethink and clarify missing versionData

* fix: consolidated ApiDocsVersionData type use

src/components/version-switcher/version-switcher.module.css

@@ -28,7 +28,8 @@ https://app.asana.com/0/1202097197789424/1204412156894162/f
 
 	/* Make dropdown list fill container */
 	& > div {
-		width: 100%;
+		min-width: 100%;
+		width: max-content;
 	}
 
 	/* Make dropdown list fill container */

src/lib/api-docs/fetch-cloud-api-version-data/index.ts

@@ -61,6 +61,25 @@ async function fetchCloudApiVersionData(
 		}
 		return { versionId, releaseStage, sourceFile }
 	})
+
+	/**
+	 * If we can't find _any version data at all_, this is unexpected. It means
+	 * that while the target directory may exist in `hcp-specs` (since Octokit
+	 * itself didn't 404 during the call to `getJsonFilesFromGithubDir), the
+	 * `.json` OpenAPI files we need weren't found.
+	 *
+	 * If this is the case, we throw an error! We want to know when this route is
+	 * completely failing to fetch the expected OpenAPI spec data.
+	 *
+	 * Note that within `getOpenApiDocsStaticProps`, we handle the subtler case
+	 * of _specific version data_ not existing, and 404 rather than error.
+	 */
+	if (!versionData || versionData.length === 0) {
+		throw new Error(
+			`Unexpected error fetching HCP OpenAPI spec data from "${githubDir.path}" in the "${githubDir.owner}${githubDir.repo}" repo, at ref "${githubDir.ref}". The configured "githubDir" did not seem to return any OpenAPI "*.json" specs in the expected location or folder structure. Please ensure the "githubDir" points to the correct owner, repo, path, and ref. Under the target path, specs should be found in folders structured like "<releaseStage>/<versionId>/*.json".`
+		)
+	}
+
 	// Return the version data, sorted in descending order
 	return sortDateVersionData(versionData)
 }

src/pages/hcp/api-docs/vault-secrets/[[...page]].tsx

@@ -92,15 +92,9 @@ export const getStaticProps: GetStaticProps<
 	const versionData = await fetchCloudApiVersionData(
 		PAGE_CONFIG.githubSourceDirectory
 	)
-	// If we can't find any version data at all, render a 404 page.
-	if (!versionData) {
-		return { notFound: true }
-	}
-
+	// Generate static props based on page configuration, params, and versionData
 	return await getOpenApiDocsStaticProps({
-		// Pass page configuration
 		...PAGE_CONFIG,
-		// Pass context and versionData to getStaticProps, needed for versioning
 		context: { params },
 		versionData,
 	})

src/views/open-api-docs-view/components/open-api-overview/index.tsx

@@ -33,6 +33,7 @@ export interface OpenApiOverviewProps {
 	serviceProductSlug: ProductSlug
 	statusIndicatorConfig?: StatusIndicatorConfig
 	contentSlot?: ReactNode
+	versionSwitcherSlot?: ReactNode
 	className?: string
 }
 
@@ -42,31 +43,37 @@ export function OpenApiOverview({
 	serviceProductSlug,
 	statusIndicatorConfig,
 	contentSlot,
+	versionSwitcherSlot,
 }: OpenApiOverviewProps) {
 	return (
 		<div className={s.overviewWrapper}>
-			<header className={s.header}>
-				<IconTile size="medium" className={s.icon}>
-					<ProductIcon productSlug={serviceProductSlug} />
-				</IconTile>
-				<span>
-					<h1 id={heading.id} className={s.heading}>
-						{heading.text}
-					</h1>
-					{statusIndicatorConfig ? (
-						<Status
-							endpointUrl={statusIndicatorConfig.endpointUrl}
-							pageUrl={statusIndicatorConfig.pageUrl}
-						/>
-					) : null}
-				</span>
-				<Badge
-					className={s.releaseStageBadge}
-					text={badgeText}
-					type="outlined"
-					size="small"
-				/>
-			</header>
+			<div className={s.headerAndVersionSwitcher}>
+				<header className={s.header}>
+					<IconTile size="medium" className={s.icon}>
+						<ProductIcon productSlug={serviceProductSlug} />
+					</IconTile>
+					<span>
+						<h1 id={heading.id} className={s.heading}>
+							{heading.text}
+						</h1>
+						{statusIndicatorConfig ? (
+							<Status
+								endpointUrl={statusIndicatorConfig.endpointUrl}
+								pageUrl={statusIndicatorConfig.pageUrl}
+							/>
+						) : null}
+					</span>
+					<Badge
+						className={s.releaseStageBadge}
+						text={badgeText}
+						type="outlined"
+						size="small"
+					/>
+				</header>
+				{versionSwitcherSlot ? (
+					<div className={s.versionSwitcherSlot}>{versionSwitcherSlot}</div>
+				) : null}
+			</div>
 			{contentSlot ? <section>{contentSlot}</section> : null}
 		</div>
 	)

src/views/open-api-docs-view/components/open-api-overview/open-api-overview.module.css

@@ -7,6 +7,22 @@
 	display: flex;
 	flex-direction: column;
 	gap: 24px;
+
+	/* stylelint-disable-next-line property-no-unknown */
+	container-type: inline-size;
+}
+
+.headerAndVersionSwitcher {
+	display: flex;
+	flex-direction: column-reverse;
+	gap: 24px;
+
+	/* stylelint-disable-next-line at-rule-no-unknown */
+	@container (min-width: 640px) {
+		flex-direction: row;
+		justify-content: space-between;
+		gap: 16px;
+	}
 }
 
 .header {
@@ -15,7 +31,8 @@
 	flex-direction: column-reverse;
 	gap: 8px;
 
-	@media (--dev-dot-tablet-up) {
+	/* stylelint-disable-next-line at-rule-no-unknown */
+	@container (min-width: 640px) {
 		flex-direction: row;
 		gap: 16px;
 	}
@@ -34,7 +51,8 @@
 .icon {
 	display: none;
 
-	@media (--dev-dot-tablet-up) {
+	/* stylelint-disable-next-line at-rule-no-unknown */
+	@container (min-width: 640px) {
 		display: block;
 		margin-top: 3px;
 	}
@@ -43,7 +61,12 @@
 .releaseStageBadge {
 	text-transform: capitalize;
 
-	@media (--dev-dot-tablet-up) {
+	/* stylelint-disable-next-line at-rule-no-unknown */
+	@container (min-width: 640px) {
 		margin-top: 13px;
 	}
 }
+
+.versionSwitcherSlot {
+	flex-shrink: 0;
+}

src/views/open-api-docs-view/index.tsx

@@ -7,7 +7,9 @@
 import SidebarLayout from 'layouts/sidebar-layout'
 // Components
 import BreadcrumbBar from 'components/breadcrumb-bar'
+import NoIndexTagIfVersioned from 'components/no-index-tag-if-versioned'
 import SidebarBackToLink from 'components/sidebar/components/sidebar-back-to-link'
+import VersionSwitcher from 'components/version-switcher'
 // Local
 import {
 	OpenApiDocsMobileMenuLevels,
@@ -34,6 +36,8 @@ function OpenApiDocsView({
 	breadcrumbLinks,
 	statusIndicatorConfig,
 	serviceProductSlug,
+	versionSwitcherProps,
+	isVersionedUrl,
 }: OpenApiDocsViewProps) {
 	return (
 		<SidebarLayout
@@ -57,11 +61,20 @@ function OpenApiDocsView({
 			<div className={s.paddedContainer}>
 				<div className={s.spaceBreadcrumbsOverview}>
 					<BreadcrumbBar links={breadcrumbLinks} />
+					<NoIndexTagIfVersioned isVersioned={isVersionedUrl} />
 					<OpenApiOverview
 						heading={topOfPageHeading}
 						badgeText={releaseStage}
 						serviceProductSlug={serviceProductSlug}
 						statusIndicatorConfig={statusIndicatorConfig}
+						versionSwitcherSlot={
+							versionSwitcherProps ? (
+								<VersionSwitcher
+									label={versionSwitcherProps.label}
+									options={versionSwitcherProps.options}
+								/>
+							) : null
+						}
 						contentSlot={
 							descriptionMdx ? (
 								<DescriptionMdx mdxRemoteProps={descriptionMdx} />

src/views/open-api-docs-view/server.ts

@@ -17,6 +17,7 @@ import {
 	getOperationProps,
 	groupOperations,
 	parseAndValidateOpenApiSchema,
+	getVersionSwitcherProps,
 } from './utils'
 // Types
 import type {
@@ -47,10 +48,11 @@ export const getStaticPaths: GetStaticPaths<OpenApiDocsParams> = async () => {
 	if (isDeployPreview()) {
 		return { paths: [], fallback: 'blocking' }
 	}
-	// If we're in production, statically render the single view.
+	// If we're in production, statically render the single view,
+	// and use `fallback: blocking` for versioned views.
 	return {
 		paths: [{ params: { page: [] } }],
-		fallback: false,
+		fallback: 'blocking',
 	}
 }
 
@@ -84,14 +86,15 @@ export async function getStaticProps({
 	 * Parse the version to render, or 404 if a non-existent version is requested.
 	 */
 	const pathParts = context.params?.page
-	const versionId = pathParts?.length > 1 ? pathParts[0] : null
+	const versionId = pathParts?.length > 0 ? pathParts[0] : null
 	const isVersionedUrl = typeof versionId === 'string'
+	const defaultVersion = findDefaultVersion(versionData)
 	// Resolve the current version
 	let targetVersion: ApiDocsVersionData | undefined
 	if (isVersionedUrl) {
 		targetVersion = versionData.find((v) => v.versionId === versionId)
 	} else {
-		targetVersion = findDefaultVersion(versionData)
+		targetVersion = defaultVersion
 	}
 	// If we can't resolve the current version, render a 404 page
 	if (!targetVersion) {
@@ -147,6 +150,14 @@ export async function getStaticProps({
 			},
 			releaseStage: targetVersion.releaseStage,
 			descriptionMdx,
+			isVersionedUrl,
+			versionSwitcherProps: getVersionSwitcherProps({
+				projectName: schemaData.info.title,
+				versionData,
+				targetVersion,
+				defaultVersion,
+				basePath,
+			}),
 			operationGroups: stripUndefinedProperties(operationGroups),
 			navItems,
 			navResourceItems,

src/views/open-api-docs-view/types.ts

@@ -12,6 +12,7 @@ import type { ProductData, ProductSlug } from 'types/products'
 import type { GithubFile } from 'lib/fetch-github-file'
 import type { GithubDir } from 'lib/fetch-github-file-tree'
 import type { BreadcrumbLink } from 'components/breadcrumb-bar'
+import type { VersionSwitcherProps } from 'components/version-switcher'
 // Local
 import type { PropertyDetailsSectionProps } from './components/operation-details'
 
@@ -158,6 +159,18 @@ export interface OpenApiDocsViewProps {
 	 * `productData` for `hcp`, and a different `serviceProductSlug` here.
 	 */
 	serviceProductSlug: ProductSlug
+
+	/**
+	 * Boolean to indicate whether the URL being rendered is a versioned URL,
+	 * in which case we want to no-index the page.
+	 */
+	isVersionedUrl: boolean
+
+	/**
+	 * Optional version data. Use this for API docs with multiple versions, the
+	 * `label` and `options` here will be passed directly to `VersionSwitcher`.
+	 */
+	versionSwitcherProps?: VersionSwitcherProps
 }
 
 /**

src/views/open-api-docs-view/utils/get-version-switcher-props.ts

@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) HashiCorp, Inc.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+
+// Types
+import type { VersionSwitcherProps } from 'components/version-switcher'
+import type { ApiDocsVersionData } from 'lib/api-docs/types'
+
+/**
+ * Given version data and other OpenAPI docs details,
+ * Return version switcher dropdown props for use in `OpenApiDocsView`.
+ *
+ * Note: If there is only one version, we return null.
+ */
+export function getVersionSwitcherProps({
+	projectName,
+	versionData,
+	targetVersion,
+	defaultVersion,
+	basePath,
+}: {
+	projectName: string
+	versionData: ApiDocsVersionData[]
+	targetVersion: ApiDocsVersionData
+	defaultVersion: ApiDocsVersionData
+	basePath: string
+}): VersionSwitcherProps | null {
+	// Return null early if we only have one version
+	if (versionData.length === 1) {
+		return null
+	}
+
+	// Otherwise, we have multiple versions, we need to build dropdown props
+	const label = projectName
+
+	// Each version becomes an option in the dropdown
+	const options = versionData.map(
+		({ versionId, releaseStage }: ApiDocsVersionData) => {
+			/**
+			 * Determine the version label suffix to show.
+			 * - Default case is to show the version only, no (suffix)
+			 * - If this is the default version, show 'latest'. For information on
+			 *   what "default version" means, see `findDefaultVersion`.
+			 * - If we have a defined releaseStage that isn't 'stable', show it
+			 */
+			const isLatest = versionId === defaultVersion.versionId
+			let versionLabelSuffix = ''
+			if (isLatest) {
+				versionLabelSuffix = ' (latest)'
+			} else if (releaseStage && releaseStage !== 'stable') {
+				versionLabelSuffix = ` (${releaseStage})`
+			}
+			// Construct the label to show in the dropdown
+			const label = versionId + versionLabelSuffix
+			// Construct the aria-label for the version dropdown.
+			const ariaLabel = `Choose a version of the API docs for ${projectName}. Currently viewing version ${label}.`
+			// Construct the `href` for this version, which is special if latest
+			const href = isLatest ? basePath : `${basePath}/${versionId}`
+			// Mark this version option as selected if it's the current option
+			const isSelected = versionId === targetVersion.versionId
+			// Return all the props
+			return { ariaLabel, href, isLatest, isSelected, label }
+		}
+	)
+
+	// Return the dropdown props
+	return { label, options }
+}

src/views/open-api-docs-view/utils/index.ts

@@ -16,3 +16,4 @@ export { groupOperations } from './group-operations'
 export { parseAndValidateOpenApiSchema } from './parse-and-validate-schema'
 export { sortDateVersionData } from './sort-date-version-data'
 export { truncateHcpOperationPath } from './truncate-hcp-operation-path'
+export { getVersionSwitcherProps } from './get-version-switcher-props'