feat: show deprecation notification

README.md

@@ -1,11 +1,14 @@
+# Latest update 🗞️ (start here first 👇)
+Vuln Cost is no longer being actively maintained. While you can continue to use this extension until it is officially deprecated, we recommend you install the official Snyk extension. This new extension provides all the functionality supported by Vuln Cost and enables you to find and fix issues in both your open source dependencies AND your custom code.
+
 <p align="center"><a href="https://github.com/snyk/vulncost"><img src="https://raw.githubusercontent.com/snyk/vulncost/master/images/vuln_cost_logo_animated.gif" alt="Vuln Cost Animated Logo" height="60"/></a></p>
 <h1 align="center">Vuln Cost</h1>
 <p align="center">The world's easiest, Security Scanner for VS Code</p>
 
 <p align="center">
 	<a href="https://snyk.io/test/github/snyk/vulncost"><img src="https://snyk.io/test/github/snyk/vulncost/badge.svg"/></a>
   <a href="https://marketplace.visualstudio.com/items?itemName=snyk-security.vscode-vuln-cost"><img src="https://vsmarketplacebadge.apphb.com/installs-short/snyk-security.vscode-vuln-cost.svg"/></a>  <a href="https://marketplace.visualstudio.com/items?itemName=snyk-security.vscode-vuln-cost"><img alt="Visual Studio Marketplace Version" src="https://img.shields.io/visual-studio-marketplace/v/snyk-security.vscode-vuln-cost?label=Marketplace&logo=visual-studio-code"></a>
-	
+
 </p><br/><br/>
 
 <p align="center">

src/extension.js

@@ -18,6 +18,7 @@ import utm from './utm';
 import statistics from './statistics';
 
 const { window, workspace, commands } = vscode;
+const deprecationNoteKey = 'deepcode.deprecationNoteMonth';
 
 let isActive = true;
 let packageWatcher = {};
@@ -27,6 +28,8 @@ export function activate(context) {
     logger.init(context);
     statistics.init(context);
 
+    void showDeprecationNotification(context);
+
     if (isAuthed()) {
       logger.log('🔒 Using Snyk credentials');
     } else {
@@ -242,3 +245,20 @@ function language({ fileName, languageId }) {
 
   return undefined;
 }
+
+async function showDeprecationNotification(context) {
+  const currentMonth = new Date().getMonth();
+  const lastMessageMonth = context.globalState.get(deprecationNoteKey);
+
+  if (!lastMessageMonth || currentMonth != lastMessageMonth) {
+    context.globalState.update(deprecationNoteKey, currentMonth);
+
+    const deprecationMessage = `The VulnCost extension is deprecated. Please use [Snyk Vulnerability Scanner](command:workbench.extensions.search?%22snyk-security.snyk-vulnerability-scanner%22) with included VulnCost's functionality and more.`;
+    const installCommandText = 'Install Snyk Vulnerability Scanner';
+
+    const selected = await vscode.window.showInformationMessage(deprecationMessage, installCommandText);
+    if (selected === installCommandText) {
+      vscode.commands.executeCommand('workbench.extensions.search', 'snyk-security.snyk-vulnerability-scanner');
+    }
+  }
+}