Chore: First step towards a github action that regularly notifies about feature toggle cleanup (#79912)

* playing around with csv parsing action

* switch to workflow dispatch

* working script

* add a check to not run on forks

* adding check comment

* no idea who should own, adding myself for now

* adding the cleanup script too

.github/CODEOWNERS

@@ -677,6 +677,8 @@ embed.go @grafana/grafana-as-code
 /.github/workflows/create-security-patch-from-security-mirror.yml @grafana/grafana-release-guild
 /.github/workflows/core-plugins-build-and-release.yml @grafana/plugins-platform-frontend @grafana/plugins-platform-backend
 /.github/workflows/i18n-crowdin-fix-files.yml @grafana/grafana-frontend-platform
+/.github/workflows/feature-toggle-cleanup.yml @tolzhabayev
+/.github/workflows/scripts/feature-toggle-cleanup/feature-toggle-cleanup.js @tolzhabayev
 
 # Generated files not requiring owner approval
 /packages/grafana-data/src/types/featureToggles.gen.ts @grafanabot

.github/workflows/feature-toggle-cleanup.yml

@@ -0,0 +1,28 @@
+name: Feature Toggle Cleanup
+
+on:
+  workflow_dispatch:
+  schedule:
+      # * is a special character in YAML so you have to quote this string
+      - cron:  '30 10 * * *'
+jobs:
+    feature-toggle-cleanup:
+        runs-on: ubuntu-latest
+        # This check is here to prevent this workflow from running on forks.    
+        if: github.repository == 'grafana/grafana'
+        steps:
+            - name: Check out the code
+              uses: actions/checkout@v3
+            - uses: actions/setup-node@v4
+              with:
+                node-version: "20.x"
+            - run: npm install csv-parse
+            - name: Parse CVS file to see which Feature Toggles should be notified about
+              id: parse-csv-file
+              uses: actions/github-script@v7
+              env:
+                    FEATURE_TOGGLES_CSV_FILE_PATH: "pkg/services/featuremgmt/toggles_gen.csv"
+              with:
+                    script: |
+                        const { default: cleanupFeatureFlags } = await import('${{ github.workspace }}/.github/workflows/scripts/feature-toggle-cleanup/feature-toggle-cleanup.mjs')                        
+                        await cleanupFeatureFlags({github, context, core})

.github/workflows/scripts/feature-toggle-cleanup/feature-toggle-cleanup.js

@@ -0,0 +1,38 @@
+import { parse } from 'csv-parse/sync';
+import fs from 'fs';
+
+/***
+ * Feauture Flag Structure example
+ *  Name: 'disableEnvelopeEncryption',
+    Stage: 'GA',
+    Owner: '@grafana/grafana-as-code',
+    Created: '2022-05-24',
+    requiresDevMode: 'false',
+    RequiresLicense: 'false',
+    RequiresRestart: 'false',
+    FrontendOnly: 'false'
+ * 
+ */
+
+
+export default function cleanupFeatureFlags() {
+	const today = new Date();
+	const sixMonthAgo = today.setMonth(today.getMonth() - 6);
+	const inputFileContents = fs.readFileSync(process.env.FEATURE_TOGGLES_CSV_FILE_PATH);
+	const parsedFeatureFlags = parse(inputFileContents, {
+		columns: true,
+		skip_empty_lines: true,
+		cast: true,
+		cast_date: true,
+	  });
+
+	// Here we can have the custom logic of how to handle what type of feature flag - e.g. GA can be treated differently than experimental and so on.
+	for (const flag of parsedFeatureFlags) {
+		if (flag.Created < sixMonthAgo) {
+			console.log(`The flag ${flag.Name} was created more than 6 months ago. It should be checked.`);
+			console.log(flag);
+		}
+	}
+	
+
+}