docs: add Helm chart installation

* Use built-in Docusaurus tabs for the Helm and kubectl install methods
* Rename the Helm release to plugin-barman-cloud, matching the chart's README and making the rollout verification command work
* Drop --create-namespace: the operator prerequisite guarantees the namespace exists
* Give each method its own verification step and example output

Signed-off-by: Krypton <root@krypton.ninja>
Signed-off-by: danishedb <danish.khan@enterprisedb.com>
Co-authored-by: danishedb <danish.khan@enterprisedb.com>

web/docs/installation.mdx

@@ -59,12 +59,10 @@ import TabItem from '@theme/TabItem';
 import { InstallationSnippet, ManifestVersion } from '@site/src/components/Installation';
 import { HelmInstallationSnippet } from '@site/src/components/HelmInstallation';
 
-<Tabs groupId="install-method" queryString>
+<Tabs groupId="install-method">
   <TabItem value="helm" label="Helm Chart" default>
 
-The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud).
-This installs the latest published chart release; to test an unreleased
-development snapshot instead, switch to the [**Manifest (kubectl)**](./?install-method=kubectl#installing-the-barman-cloud-plugin) tab.
+The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud):
 
 <HelmInstallationSnippet />
 

web/src/components/HelmInstallation/index.tsx

@@ -1,36 +1,22 @@
-import {ReactElement} from 'react';
-import CodeBlock from '@theme/CodeBlock';
-import {useActiveVersion, useLatestVersion} from '@docusaurus/plugin-content-docs/client';
+import { ReactElement } from "react";
+import CodeBlock from "@theme/CodeBlock";
 
-// HelmInstallationSnippet is the Helm command to install the plugin.
-//
-// - Latest release: no override. The chart already defaults to
-//   itself.
-// - Older release: pin image.tag and sidecarImage.tag to that
-//   version. We check this again on every build using
-//   useLatestVersion, so an old page updates itself once a newer
-//   version ships.
-// - Dev docs: also no override, but this does NOT install a dev
-//   build. Setting the tag alone would not be enough, since the
-//   chart's own templates (CRDs, RBAC...) can be older than what
-//   main needs. Use the kubectl method to test a dev build.
-export function HelmInstallationSnippet(): ReactElement<null> {
-    const activeVersion = useActiveVersion('default');
-    const latestVersion = useLatestVersion('default');
-    const isOlderRelease = activeVersion
-        && activeVersion.name !== 'current'
-        && activeVersion.name !== latestVersion.name;
-    const setArgs = isOlderRelease
-        ? ` \\
-  --set image.tag=v${activeVersion.name} \\
-  --set sidecarImage.tag=v${activeVersion.name}`
-        : '';
-    return (
-        <CodeBlock language="sh">
-            {`helm repo add cnpg https://cloudnative-pg.github.io/charts --force-update
+type HelmInstallationProps = {
+  chartVersion?: string;
+};
+
+// HelmInstallationSnippet is the Helm incantation to install a specific
+// or latest available version of the Barman Cloud Plugin.
+export function HelmInstallationSnippet({
+  chartVersion,
+}: HelmInstallationProps): ReactElement<null> {
+  const versionArg = chartVersion ? `\n  --version ${chartVersion} \\` : "";
+  return (
+    <CodeBlock language="sh">
+      {`helm repo add cnpg https://cloudnative-pg.github.io/charts --force-update
 helm upgrade --install plugin-barman-cloud \\
-  --namespace cnpg-system${setArgs} \\
+  --namespace cnpg-system \\${versionArg}
   cnpg/plugin-barman-cloud`}
-        </CodeBlock>
-    );
+    </CodeBlock>
+  );
 }

web/src/components/Installation/index.tsx

@@ -1,7 +1,5 @@
 import {ReactElement} from 'react';
 import CodeBlock from '@theme/CodeBlock';
-import Link from '@docusaurus/Link';
-import {useLocation} from '@docusaurus/router';
 import {useActiveVersion} from '@docusaurus/plugin-content-docs/client';
 
 // DEV_MANIFEST_URL is the URL of the manifest.yaml on the main branch of the plugin repo.
@@ -33,17 +31,14 @@ export function ManifestVersion(): ReactElement<null> {
         : <>the latest development snapshot from the <code>main</code> branch</>;
 }
 
-// DevSnapshotSection shows how to test the main-branch manifest. On
-// the Dev docs, the kubectl install above already does that, so we
-// hide this section there. (The Helm tab there installs the latest
-// release, not a dev build.)
+// DevSnapshotSection offers the main-branch manifest as an alternative;
+// on the Dev docs the main install already is that manifest, so hide it.
 export function DevSnapshotSection(): ReactElement {
     const activeVersion = useActiveVersion('default');
-    const {pathname} = useLocation();
     if (!activeVersion || activeVersion.name === 'current') {
         return (
-            <p>The <Link to={`${pathname}?install-method=kubectl#installing-the-barman-cloud-plugin`}>kubectl
-                install command above</Link> already applies the latest development
+            <p>The <a href="#installing-the-barman-cloud-plugin">install
+                command above</a> already applies the latest development
                 snapshot from the <code>main</code> branch.</p>
         );
     }

web/versioned_docs/version-0.13.0/installation.mdx

@@ -64,7 +64,7 @@ import { HelmInstallationSnippet } from '@site/src/components/HelmInstallation';
 
 The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud):
 
-<HelmInstallationSnippet />
+<HelmInstallationSnippet chartVersion="0.7.0" />
 
 Example output:
 

web/versioned_docs/version-0.14.0/installation.mdx

@@ -64,7 +64,7 @@ import { HelmInstallationSnippet } from '@site/src/components/HelmInstallation';
 
 The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud):
 
-<HelmInstallationSnippet />
+<HelmInstallationSnippet chartVersion="0.7.1" />
 
 Example output: