Notify users if there's a pre-release version available. (#11569)

* Notify users if there's a pre-release version available

Author: spebl

Extension/src/LanguageServer/extension.ts

@@ -11,6 +11,7 @@ import * as path from 'path';
 import * as vscode from 'vscode';
 import { Range } from 'vscode-languageclient';
 import * as nls from 'vscode-nls';
+import { TargetPopulation } from 'vscode-tas-client';
 import { logAndReturn } from '../Utility/Async/returns';
 import * as util from '../common';
 import { PlatformInformation } from '../platform';
@@ -1162,3 +1163,36 @@ export function UpdateInsidersAccess(): void {
         void vscode.commands.executeCommand("workbench.extensions.installExtension", "ms-vscode.cpptools", { installPreReleaseVersion: true }).then(undefined, logAndReturn.undefined);
     }
 }
+
+export async function preReleaseCheck(): Promise<void> {
+    const displayedPreReleasePrompt: PersistentState<boolean> = new PersistentState<boolean>("CPP.displayedPreReleasePrompt", false);
+
+    // First we need to make sure the user isn't already on a pre-release version and hasn't dismissed this prompt before.
+    if (!displayedPreReleasePrompt.Value && util.getCppToolsTargetPopulation() === TargetPopulation.Public) {
+        // Get the info on the latest version from the marketplace to check if there is a pre-release version available.
+        const response = await fetch('https://marketplace.visualstudio.com/_apis/public/gallery/extensionquery', {
+            method: 'POST',
+            headers: {
+                Accept : 'application/json; api-version=3.0-preview',
+                'Content-Type' : 'application/json'
+            },
+            body: '{"filters": [{"criteria": [{"filterType": 7, "value": "ms-vscode.cpptools"}]}], "flags": 529}'
+        });
+
+        const data = await response.json();
+        const preReleaseAvailable = data.results[0].extensions[0].versions[0].properties.some((e: object) => Object.values(e).includes("Microsoft.VisualStudio.Code.PreRelease"));
+
+        // If the user isn't on the pre-release version, but one is available, prompt them to install it.
+        if (preReleaseAvailable) {
+            displayedPreReleasePrompt.Value = true;
+            const message: string = localize("prerelease.message", "A pre-release version of the C/C++ extension is available. Would you like to switch to it?");
+            const yes: string = localize("yes.button", "Yes");
+            const no: string = localize("no.button", "No");
+            void vscode.window.showInformationMessage(message, yes, no).then((selection) => {
+                if (selection === yes) {
+                    void vscode.commands.executeCommand("workbench.extensions.installExtension", "ms-vscode.cpptools", { installPreReleaseVersion: true }).then(undefined, logAndReturn.undefined);
+                }
+            });
+        }
+    }
+}

Extension/src/main.ts

@@ -70,6 +70,7 @@ export async function activate(context: vscode.ExtensionContext): Promise<CppToo
     util.checkDistro(info);
     await checkVsixCompatibility();
     LanguageServer.UpdateInsidersAccess();
+    await LanguageServer.preReleaseCheck();
 
     const settings: CppSettings = new CppSettings((vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders.length > 0) ? vscode.workspace.workspaceFolders[0]?.uri : undefined);
     let isOldMacOs: boolean = false;