fix: Only enable the scheduler where it's desired

.env.development.sample

@@ -10,5 +10,6 @@ APP_ENVIRONMENT_OVERRIDE="stewards.team"
 APP_PASSRESET_PASSWORD="my_password"
 APP_PASSWORD_SALT="my_salt"
 APP_REGISTRATION_PASSWORD="my_password"
+APP_SCHEDULER_ENABLED="0"
 APP_SCHEDULER_PASSWORD="my_password"
 NEXT_PUBLIC_MUI_LICENSE_KEY="YOUR_LICENSE_KEY"

.env.production.sample

@@ -9,5 +9,6 @@ APP_DATABASE_NAME="database_name"
 APP_PASSRESET_PASSWORD="my_password"
 APP_PASSWORD_SALT="my_salt"
 APP_REGISTRATION_PASSWORD="my_password"
+APP_SCHEDULER_ENABLED="1"
 APP_SCHEDULER_PASSWORD="my_password"
 NEXT_PUBLIC_MUI_LICENSE_KEY="YOUR_LICENSE_KEY"

app/admin/system/scheduler/page.tsx

@@ -3,6 +3,8 @@
 
 import type { Metadata } from 'next';
 
+import Alert from '@mui/material/Alert';
+
 import { SchedulerCreateTaskPanel } from './SchedulerCreateTaskPanel';
 import { SchedulerTaskTable } from './SchedulerTaskTable';
 import { requireAuthenticationContext } from '@lib/auth/AuthenticationContext';
@@ -19,6 +21,10 @@ export default async function SchedulerPage() {
 
     return (
         <>
+            { process.env.APP_SCHEDULER_ENABLED !== '1' &&
+                <Alert severity="error" variant="filled">
+                    The scheduler is not running on this Volunteer Manager instance.
+                </Alert> }
             <SchedulerTaskTable />
             <SchedulerCreateTaskPanel />
         </>

instrumentation.ts

@@ -16,7 +16,7 @@ export async function register() {
         return;
     }
 
-    if (process.env.NODE_ENV !== 'production' && !process.env.APP_USE_SCHEDULER) {
+    if (process.env.NODE_ENV !== 'production' && process.env.APP_SCHEDULER_ENABLED !== '1') {
         // Fail silent: this is intentionally done by the developer.
         return;
     }

package.json

@@ -9,7 +9,7 @@
     "build-staging": "node Docker.build.js 3002 volunteer-manager-staging",
     "build-with-bundle-analyzer": "cross-env ANALYZE=true next build",
     "serve": "next dev --turbo",
-    "serve-with-scheduler": "cross-env APP_USE_SCHEDULER=1 next dev --turbo",
+    "serve-with-scheduler": "cross-env APP_SCHEDULER_ENABLED=1 next dev --turbo",
     "lint": "next lint",
     "test": "jest",
     "test:e2e": "playwright test --reporter=html"