fix: auth scheduler env vars, concurrency and browser stability

src/lib/server/scheduler.ts

@@ -1,10 +1,11 @@
 import fs from 'fs';
 import path from 'path';
 import { getBrowser } from './browser';
+import { env } from '$env/dynamic/private';
 
 export interface SchedulerConfig {
 	enabled: boolean;
-	intervalHours: number;
+	intervalMinutes: number;
 }
 
 interface SchedulerState {
@@ -23,12 +24,19 @@ const state: SchedulerState = {
  * Get scheduler configuration from environment variables
  */
 function getConfig(): SchedulerConfig {
-	const enabled = process.env.AUTH_SCHEDULER_ENABLED === 'true';
-	const intervalHours = parseInt(process.env.AUTH_SCHEDULER_INTERVAL_HOURS || '12', 10);
+	const enabled = env.AUTH_SCHEDULER_ENABLED === 'true';
+	let intervalMinutes = parseInt(env.AUTH_SCHEDULER_INTERVAL_MINUTES || '720', 10);
+
+	if (isNaN(intervalMinutes) || intervalMinutes < 15) {
+		console.warn(
+			`[Scheduler] Invalid or too short interval '${env.AUTH_SCHEDULER_INTERVAL_MINUTES}'. Defaulting to 720 minutes.`
+		);
+		intervalMinutes = 720;
+	}
 
 	return {
 		enabled,
-		intervalHours
+		intervalMinutes
 	};
 }
 
@@ -70,14 +78,17 @@ async function renewInstagramAuth(): Promise<boolean> {
 
 	state.isRenewing = true;
 
+	let context = null;
+	let page = null;
+
 	try {
 		console.log('[Scheduler] Starting Instagram authentication renewal...');
 		console.log(`[Scheduler] Loading existing auth from: ${authPath}`);
 
 		const browser = await getBrowser();
 		// Load existing authentication state
-		const context = await browser.newContext({ storageState: authPath });
-		const page = await context.newPage();
+		context = await browser.newContext({ storageState: authPath });
+		page = await context.newPage();
 
 		// Navigate to Instagram homepage - the existing auth will be used automatically
 		await page.goto('https://www.instagram.com/', { waitUntil: 'domcontentloaded' });
@@ -88,9 +99,6 @@ async function renewInstagramAuth(): Promise<boolean> {
 			console.log('[Scheduler] Successfully authenticated with Instagram');
 		} catch (e) {
 			console.warn('[Scheduler] Home icon not found - session may be expired or invalid');
-			await page.close();
-			await context.close();
-			state.isRenewing = false;
 			return false;
 		}
 
@@ -105,9 +113,6 @@ async function renewInstagramAuth(): Promise<boolean> {
 		// Update auth.json with refreshed session
 		await context.storageState({ path: authPath });
 
-		await page.close();
-		await context.close();
-
 		state.lastRenewalTime = Date.now();
 		console.log(`[Scheduler] Instagram authentication renewed successfully at ${new Date().toISOString()}`);
 		console.log(`[Scheduler] Auth state updated at: ${authPath}`);
@@ -117,6 +122,12 @@ async function renewInstagramAuth(): Promise<boolean> {
 		console.error('[Scheduler] Instagram authentication renewal failed:', error);
 		return false;
 	} finally {
+		if (page) {
+			await page.close().catch(() => {});
+		}
+		if (context) {
+			await context.close().catch(() => {});
+		}
 		state.isRenewing = false;
 	}
 }
@@ -137,9 +148,9 @@ export async function startScheduler(): Promise<void> {
 		return;
 	}
 
-	const intervalMs = config.intervalHours * 60 * 60 * 1000;
+	const intervalMs = config.intervalMinutes * 60 * 1000;
 
-	console.log(`[Scheduler] Starting authentication scheduler with ${config.intervalHours}h interval`);
+	console.log(`[Scheduler] Starting authentication scheduler with ${config.intervalMinutes}min interval`);
 
 	// Schedule periodic renewals
 	state.intervalId = setInterval(async () => {