Files
2026-04-10 10:04:20 -04:00

859 lines
27 KiB
JavaScript

// Pokemon Stock Monitor - Background Service Worker
const DEFAULT_CONFIG = {
discordWebhook: "",
checkIntervalSeconds: 90, // Minimum 60 to avoid PokemonCenter bot detection
enabled: true,
urls: [
"https://www.pokemoncenter.com/category/tcg-cards?sort=relevance"
],
keywords: [], // Empty = all products, or ["chaos rising", "booster"] etc
notifyNewProducts: true,
notifyRestocks: true,
dashboardUrl: "http://localhost:5000", // Local dashboard URL
syncToDashboard: true // Enable syncing to local dashboard
};
// Store known products
let knownProducts = {};
let config = DEFAULT_CONFIG;
let persistentTabId = null; // Keep tab open for faster refreshes
let isChecking = false; // Prevent overlapping checks
let lastNotificationTime = 0; // Rate limiting for Discord
let botBackoffUntil = 0; // Timestamp (ms) until which checks are paused after bot detection
let consecutiveBotDetections = 0; // Track consecutive failures for exponential backoff
let captchaTabId = null; // Tab currently showing a captcha — kept open for user to solve
// API monitoring - track SKUs seen from backend API calls
let knownSkus = new Set();
let apiStats = {
lastApiResponse: null,
totalSkusTracked: 0,
newSkusDetected: 0,
apiResponseCount: 0
};
// Initialize
chrome.runtime.onInstalled.addListener(() => {
console.log("Pokemon Stock Monitor installed");
chrome.storage.local.remove(["persistentTabId", "captchaTabId"]);
loadConfig().then(() => {
loadProducts();
loadKnownSkus();
startCheckLoop();
});
});
// Load on startup
chrome.runtime.onStartup.addListener(async () => {
await loadConfig();
await loadPersistentTabId(); // must complete before any check runs
loadProducts();
loadKnownSkus();
startCheckLoop();
});
const ALARM_NAME = "stockCheck";
// Start the check loop using chrome.alarms so it survives service worker restarts
// Adds ±15s jitter to the first delay to avoid predictable bot-like cadence
function startCheckLoop() {
const intervalMinutes = Math.max(1, config.checkIntervalSeconds / 60);
const jitterMinutes = (Math.random() - 0.5) * 0.5; // ±15 seconds
const delayMinutes = Math.max(0.1, intervalMinutes + jitterMinutes);
chrome.alarms.get(ALARM_NAME, (existing) => {
if (!existing) {
chrome.alarms.create(ALARM_NAME, { delayInMinutes: delayMinutes, periodInMinutes: intervalMinutes });
console.log(`Check alarm created: every ${intervalMinutes} min (first in ~${delayMinutes.toFixed(2)} min)`);
}
});
}
function stopCheckLoop() {
chrome.alarms.clear(ALARM_NAME);
console.log("Check alarm cleared");
}
// Handle alarms
chrome.alarms.onAlarm.addListener(async (alarm) => {
if (alarm.name === ALARM_NAME) {
if (!isChecking && config.enabled) {
// Skip check if we're still in bot-detection backoff window
if (Date.now() < botBackoffUntil) {
const remainingSec = Math.round((botBackoffUntil - Date.now()) / 1000);
console.log(`[Backoff] Skipping check — bot backoff active for ${remainingSec}s more`);
return;
}
isChecking = true;
try {
// Service worker may have been killed and restarted since last check —
// restore state from storage before doing anything with tabs or config.
await loadConfig();
await loadPersistentTabId();
await loadBackoffState();
await loadCaptchaTabState();
await runStockCheck();
} finally {
isChecking = false;
}
}
}
});
// Load config from storage
async function loadConfig() {
const stored = await chrome.storage.local.get("config");
if (stored.config) {
config = { ...DEFAULT_CONFIG, ...stored.config };
}
console.log("Config loaded:", config);
}
// Save config to storage
async function saveConfig() {
await chrome.storage.local.set({ config });
// Recreate alarm with updated interval
stopCheckLoop();
if (config.enabled) {
startCheckLoop();
}
}
// Load known products from storage
async function loadProducts() {
const stored = await chrome.storage.local.get("knownProducts");
if (stored.knownProducts) {
knownProducts = stored.knownProducts;
}
console.log(`Loaded ${Object.keys(knownProducts).length} known products`);
}
// Save known products to storage
async function saveProducts() {
await chrome.storage.local.set({ knownProducts });
}
// Load/save persistent tab ID from storage so it survives service worker restarts
async function loadPersistentTabId() {
const stored = await chrome.storage.local.get("persistentTabId");
if (stored.persistentTabId) {
try {
await chrome.tabs.get(stored.persistentTabId);
persistentTabId = stored.persistentTabId;
console.log(`Restored persistent tab ${persistentTabId}`);
} catch (e) {
persistentTabId = null;
await chrome.storage.local.remove("persistentTabId");
}
}
}
async function savePersistentTabId(tabId) {
persistentTabId = tabId;
await chrome.storage.local.set({ persistentTabId: tabId });
}
async function clearPersistentTab() {
const idToRemove = persistentTabId;
// Null out state immediately so a concurrent call doesn't double-remove
persistentTabId = null;
await chrome.storage.local.remove("persistentTabId");
if (idToRemove) {
try {
await chrome.tabs.remove(idToRemove);
console.log(`Closed persistent tab ${idToRemove}`);
} catch (e) {
// Tab was already closed externally — that's fine
console.log(`Tab ${idToRemove} already gone: ${e.message}`);
}
}
}
// Backoff state survives service worker restarts via storage
async function loadBackoffState() {
const stored = await chrome.storage.local.get(["botBackoffUntil", "consecutiveBotDetections"]);
botBackoffUntil = stored.botBackoffUntil || 0;
consecutiveBotDetections = stored.consecutiveBotDetections || 0;
}
async function saveBackoffState() {
await chrome.storage.local.set({ botBackoffUntil, consecutiveBotDetections });
}
async function applyBotBackoff() {
consecutiveBotDetections++;
// Exponential backoff: 2^n minutes, capped at 30 minutes, with ±30s jitter
const backoffMinutes = Math.min(30, Math.pow(2, consecutiveBotDetections));
const jitterMs = (Math.random() - 0.5) * 60000; // ±30 seconds
botBackoffUntil = Date.now() + backoffMinutes * 60000 + jitterMs;
await saveBackoffState();
console.log(`[Backoff] Bot detected (${consecutiveBotDetections}x) — pausing checks for ~${backoffMinutes} min`);
}
function resetBotBackoff() {
if (consecutiveBotDetections > 0) {
console.log("[Backoff] Successful check — resetting bot detection counter");
consecutiveBotDetections = 0;
botBackoffUntil = 0;
chrome.storage.local.remove(["botBackoffUntil", "consecutiveBotDetections"]);
}
}
// --- Captcha tab tracking ---
// Persists the tab ID of the open captcha page across service worker restarts.
async function loadCaptchaTabState() {
const stored = await chrome.storage.local.get("captchaTabId");
if (stored.captchaTabId) {
try {
await chrome.tabs.get(stored.captchaTabId);
captchaTabId = stored.captchaTabId;
console.log(`[Captcha] Restored captcha tab ${captchaTabId}`);
} catch (e) {
captchaTabId = null;
await chrome.storage.local.remove("captchaTabId");
}
}
}
async function saveCaptchaTabId(tabId) {
captchaTabId = tabId;
if (tabId) {
await chrome.storage.local.set({ captchaTabId: tabId });
} else {
await chrome.storage.local.remove("captchaTabId");
}
}
// Returns 'solved' | 'still_captcha' | 'gone'
async function checkCaptchaTabStatus() {
if (!captchaTabId) return 'gone';
try {
const tab = await chrome.tabs.get(captchaTabId);
// If still loading or on a known captcha URL, not solved yet
if (!tab.url || tab.status === 'loading' || isCaptchaUrl(tab.url)) {
return 'still_captcha';
}
// Tab is back on pokemoncenter — user likely solved it
return 'solved';
} catch (e) {
return 'gone'; // Tab was closed
}
}
// Load known SKUs from storage (for API monitoring)
async function loadKnownSkus() {
const stored = await chrome.storage.local.get("knownSkus");
if (stored.knownSkus) {
knownSkus = new Set(stored.knownSkus);
}
console.log(`[API Monitor] Loaded ${knownSkus.size} known SKUs`);
}
// Save known SKUs to storage
async function saveKnownSkus() {
await chrome.storage.local.set({ knownSkus: Array.from(knownSkus) });
}
// Handle API data from content script interceptor
async function handleApiData(data) {
apiStats.apiResponseCount++;
apiStats.lastApiResponse = new Date().toISOString();
if (!data.skus || data.skus.length === 0) return;
const newSkus = [];
for (const sku of data.skus) {
if (!knownSkus.has(sku)) {
knownSkus.add(sku);
newSkus.push(sku);
apiStats.newSkusDetected++;
}
}
apiStats.totalSkusTracked = knownSkus.size;
if (newSkus.length > 0) {
console.log(`[API Monitor] NEW SKUs detected: ${newSkus.join(', ')}`);
// Send Discord alert for new SKUs
if (config.discordWebhook && config.notifyNewProducts) {
for (const sku of newSkus.slice(0, 3)) { // Limit to 3 to avoid spam
await sendSkuAlert(sku, data.url);
await new Promise(r => setTimeout(r, 1000));
}
}
await saveKnownSkus();
}
}
// Send alert for new SKU detected via API
async function sendSkuAlert(sku, sourceUrl) {
const productUrl = `https://www.pokemoncenter.com/product/${sku}`;
const embed = {
title: "NEW SKU DETECTED (API)",
description: `**SKU: ${sku}**\n\nDetected in backend API before public listing!`,
url: productUrl,
color: 0xFF00FF, // Magenta for API detections
fields: [
{ name: "SKU", value: sku, inline: true },
{ name: "Source", value: "API Intercept", inline: true },
{ name: "Link", value: `[VIEW PRODUCT](${productUrl})`, inline: false }
],
footer: { text: "Pokemon Monitor - API Detection" },
timestamp: new Date().toISOString()
};
try {
const response = await fetch(config.discordWebhook, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
content: "@everyone NEW SKU FROM API!",
embeds: [embed]
})
});
if (response.ok) {
console.log(`[API Monitor] Discord alert sent for SKU: ${sku}`);
chrome.notifications.create({
type: "basic",
iconUrl: "icon128.png",
title: "NEW SKU DETECTED!",
message: `SKU: ${sku} - Check Discord!`
});
}
} catch (error) {
console.error("[API Monitor] Error sending alert:", error);
}
}
// Main stock check function
async function runStockCheck() {
if (!config.enabled) {
console.log("Stock check disabled");
return;
}
// If we have a captcha tab open, check whether the user has solved it
// before opening any new tabs or sending more warnings.
if (captchaTabId) {
const status = await checkCaptchaTabStatus();
if (status === 'still_captcha') {
console.log(`[Captcha] Tab ${captchaTabId} still showing captcha — waiting for user`);
await applyBotBackoff(); // Re-arm backoff silently; no Discord ping
return;
}
if (status === 'solved') {
console.log(`[Captcha] Tab ${captchaTabId} looks resolved — resuming normal checks`);
// Reclaim the solved tab as the persistent tab so we don't open a new one
await savePersistentTabId(captchaTabId);
await saveCaptchaTabId(null);
resetBotBackoff();
} else { // 'gone' — user closed the tab themselves
console.log('[Captcha] Captcha tab was closed — resuming normal checks');
await saveCaptchaTabId(null);
resetBotBackoff();
}
}
console.log("Running stock check...");
for (const url of config.urls) {
try {
const products = await fetchAndParseProducts(url);
// Alert if 0 products found — likely captcha or bot protection
if (products.length === 0) {
console.warn("WARNING: 0 products found - possible bot protection or captcha!");
botProtectionDetected = true;
const isFirstDetection = consecutiveBotDetections === 0;
await applyBotBackoff();
if (isFirstDetection) {
// Only ping Discord on the first detection — not on every retry
const backoffMin = Math.round((botBackoffUntil - Date.now()) / 60000);
await sendWarningNotification("Bot Protection Detected",
`Found 0 products — captcha may be active. Pausing checks for ~${backoffMin} min. Check the open PokemonCenter tab and solve the captcha if prompted.`);
}
// Keep the tab open so the user can solve the captcha.
// If fetchAndParseProducts already saved it as captchaTabId (URL-detected),
// use that; otherwise promote the current persistentTabId so we track it.
if (!captchaTabId && persistentTabId) {
await saveCaptchaTabId(persistentTabId);
}
persistentTabId = null;
await chrome.storage.local.remove("persistentTabId");
continue;
}
// Successful product load — reset any backoff state
resetBotBackoff();
const { newProducts, restockedProducts } = processProducts(products);
// Send notifications with rate limiting
// Limit new product notifications to 5 per check to avoid Discord rate limits
const MAX_NEW_NOTIFICATIONS = 5;
let notificationsSent = 0;
if (config.notifyNewProducts && newProducts.length > 0) {
const inStockNew = newProducts.filter(p => p.inStock);
if (inStockNew.length > MAX_NEW_NOTIFICATIONS) {
console.log(`Limiting notifications: ${inStockNew.length} new products, only sending ${MAX_NEW_NOTIFICATIONS}`);
}
for (const product of inStockNew.slice(0, MAX_NEW_NOTIFICATIONS)) {
await sendDiscordNotification(product, "new_drop");
notificationsSent++;
if (notificationsSent > 1) await new Promise(r => setTimeout(r, 1000)); // 1 sec delay between notifications
}
}
// Always notify restocks (these are high priority)
if (config.notifyRestocks) {
for (const product of restockedProducts) {
await sendDiscordNotification(product, "restock");
await new Promise(r => setTimeout(r, 1000)); // 1 sec delay
}
}
console.log(`Check complete: ${products.length} products, ${newProducts.length} new, ${restockedProducts.length} restocks`);
} catch (error) {
console.error(`Error checking ${url}:`, error);
}
}
await saveProducts();
// Sync to dashboard after every run
if (config.syncToDashboard) {
await syncToDashboard();
}
}
// Detect captcha/challenge pages by URL patterns (all lowercase comparisons)
function isCaptchaUrl(url) {
if (!url) return false;
const lower = url.toLowerCase();
// Known bot-protection URL signatures
if (lower.includes('_incapsula_resource')) return true;
if (lower.includes('/cdn-cgi/challenge')) return true;
if (lower.includes('imperva')) return true;
if (lower.includes('incapsula')) return true;
if (lower.includes('distil')) return true;
// "challenge" or "verify" only flag if we've left the pokemoncenter domain entirely
if (!lower.includes('pokemoncenter.com')) return true;
return false;
}
// Fetch and parse products from a URL using content script
async function fetchAndParseProducts(url) {
let tabId;
try {
// Reuse existing tab or create a new one
if (persistentTabId) {
try {
await chrome.tabs.get(persistentTabId);
tabId = persistentTabId;
console.log(`Reusing tab ${tabId}, navigating...`);
await chrome.tabs.update(tabId, { url });
} catch (e) {
// Tab is gone — clear it and fall through to create a new one
await clearPersistentTab();
tabId = null;
}
}
if (!tabId) {
const tab = await chrome.tabs.create({ url, active: false });
tabId = tab.id;
await savePersistentTabId(tabId);
console.log(`Created new tab ${tabId}`);
}
// Wait for tab to finish loading
await new Promise((res) => {
const listener = (tid, changeInfo) => {
if (tid === tabId && changeInfo.status === "complete") {
chrome.tabs.onUpdated.removeListener(listener);
res();
}
};
chrome.tabs.onUpdated.addListener(listener);
setTimeout(() => {
chrome.tabs.onUpdated.removeListener(listener);
res();
}, 20000);
});
// Check if the tab landed on a captcha/challenge page
try {
const tab = await chrome.tabs.get(tabId);
if (isCaptchaUrl(tab.url)) {
console.warn(`[Captcha] Tab ${tabId} landed on challenge page: ${tab.url}`);
// Keep tab open for user; track it so we can poll for resolution
await saveCaptchaTabId(tabId);
persistentTabId = null;
await chrome.storage.local.remove("persistentTabId");
return []; // Caller will handle backoff + single ping
}
} catch (e) { /* tab may have been closed */ }
console.log(`Tab ${tabId} loaded`);
// Poll for products — PokemonCenter is a React SPA so status:"complete" fires
// on the HTML shell before products are rendered via API calls.
// Inject content.js once, then poll via messaging.
let products = [];
const startTime = Date.now();
const maxWait = 25000;
const pollInterval = 1000; // Reduced polling frequency
let injected = false;
while (Date.now() - startTime < maxWait) {
try {
if (!injected) {
try {
await chrome.scripting.executeScript({ target: { tabId }, files: ["content.js"] });
injected = true;
} catch (e) {
injected = true; // Already injected — treat as done
}
}
await new Promise(r => setTimeout(r, pollInterval));
const response = await chrome.tabs.sendMessage(tabId, { type: "extractProducts" });
products = response || [];
if (products.length > 0) {
console.log(`Found ${products.length} products after ${Date.now() - startTime}ms`);
break;
}
} catch (e) {
// Content script not ready yet
}
}
if (products.length === 0) {
console.log(`No products found after ${maxWait}ms — assuming captcha/bot block`);
// Keep the tab open and track it so runStockCheck can poll for resolution
await saveCaptchaTabId(tabId);
persistentTabId = null;
await chrome.storage.local.remove("persistentTabId");
}
// Apply keyword filter
if (config.keywords && config.keywords.length > 0) {
products = products.filter(p =>
config.keywords.some(kw => p.name.toLowerCase().includes(kw.toLowerCase()))
);
console.log(`After keyword filter: ${products.length} products`);
}
// Keep tab open for reuse next check
return products;
} catch (error) {
// On any error, close the tab so we don't leave an untracked orphan
await clearPersistentTab();
tabId = null;
throw error;
}
}
// Note: Product parsing is now done by the content script (content.js)
// Process products - detect new and restocked
function processProducts(products) {
const newProducts = [];
const restockedProducts = [];
const now = new Date().toISOString();
for (const product of products) {
const existing = knownProducts[product.url];
if (!existing) {
// New product
newProducts.push(product);
knownProducts[product.url] = {
...product,
firstSeen: now,
lastSeen: now,
lastInStock: product.inStock ? now : null
};
// Queue new_drop event for dashboard sync
pendingEvents.push({
type: 'new_drop',
url: product.url,
name: product.name,
price: product.price,
inStock: product.inStock,
timestamp: now
});
} else {
// Existing product - check for restock
if (product.inStock && !existing.inStock) {
restockedProducts.push(product);
existing.lastInStock = now;
// Queue restock event for dashboard sync
pendingEvents.push({
type: 'restock',
url: product.url,
name: product.name,
price: product.price,
previousPrice: existing.price,
timestamp: now
});
}
// Track when items go OUT of stock (for selling rate calculation)
if (!product.inStock && existing.inStock) {
pendingEvents.push({
type: 'out_of_stock',
url: product.url,
name: product.name,
price: product.price,
lastInStock: existing.lastInStock, // When it came in stock
timestamp: now // When it sold out
});
}
// Track price changes
if (product.price && existing.price && product.price !== existing.price) {
pendingEvents.push({
type: 'price_change',
url: product.url,
name: product.name,
oldPrice: existing.price,
newPrice: product.price,
timestamp: now
});
}
// Update
existing.inStock = product.inStock;
existing.price = product.price || existing.price;
existing.lastSeen = now;
}
}
return { newProducts, restockedProducts };
}
// Send warning notification (for bot protection, errors, etc.)
async function sendWarningNotification(title, message) {
if (!config.discordWebhook) {
console.log("No Discord webhook configured");
return;
}
const embed = {
title: `⚠️ ${title}`,
description: message,
color: 0xFF6600, // Orange for warnings
footer: { text: "Pokemon Stock Monitor (Chrome Extension)" },
timestamp: new Date().toISOString()
};
try {
const response = await fetch(config.discordWebhook, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
content: "@everyone",
embeds: [embed]
})
});
if (response.ok) {
console.log(`Warning notification sent: ${title}`);
}
} catch (error) {
console.error("Error sending warning notification:", error);
}
}
// Send Discord notification
async function sendDiscordNotification(product, alertType) {
if (!config.discordWebhook) {
console.log("No Discord webhook configured");
return;
}
const color = alertType === "restock" ? 0x00FF00 : 0x0099FF;
const title = alertType === "restock" ? "RESTOCK ALERT" : "NEW DROP";
const embed = {
title: title,
description: `**${product.name}**`,
url: product.url,
color: color,
fields: [
{ name: "Price", value: product.price || "See link", inline: true },
{ name: "Store", value: "Pokemon Center", inline: true },
{ name: "Link", value: `[BUY NOW](${product.url})`, inline: false }
],
footer: { text: "Pokemon Stock Monitor (Chrome Extension)" },
timestamp: new Date().toISOString()
};
if (product.imageUrl) {
embed.thumbnail = { url: product.imageUrl };
}
try {
const response = await fetch(config.discordWebhook, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
content: "@everyone",
embeds: [embed]
})
});
if (response.ok) {
console.log(`Discord notification sent for: ${product.name}`);
// Also show browser notification
chrome.notifications.create({
type: "basic",
iconUrl: "icon128.png",
title: title,
message: product.name
});
} else {
console.error("Discord notification failed:", response.status);
}
} catch (error) {
console.error("Error sending Discord notification:", error);
}
}
// Track pending events to sync (restocks, new drops)
let pendingEvents = [];
let botProtectionDetected = false;
// Sync data to local dashboard
async function syncToDashboard() {
if (!config.syncToDashboard || !config.dashboardUrl) {
return { success: false, reason: 'sync disabled' };
}
// Build products array with all tracking data
const productsToSync = Object.values(knownProducts).map(p => ({
...p,
site: 'pokemoncenter',
sku: p.productId || extractSkuFromUrl(p.url)
}));
const syncData = {
skus: Array.from(knownSkus),
products: productsToSync,
apiStats: apiStats,
events: pendingEvents,
bot_protection_detected: botProtectionDetected
};
try {
const response = await fetch(`${config.dashboardUrl}/api/extension/sync`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(syncData)
});
if (response.ok) {
const result = await response.json();
console.log(`[Dashboard Sync] Success - ${result.total_skus} SKUs, ${result.total_products} products`);
// Clear pending events and flags after successful sync
pendingEvents = [];
botProtectionDetected = false;
return { success: true, ...result };
} else {
console.warn(`[Dashboard Sync] Failed: ${response.status}`);
return { success: false, status: response.status };
}
} catch (error) {
// Dashboard might not be running - silently fail
console.debug(`[Dashboard Sync] Dashboard not available: ${error.message}`);
return { success: false, error: error.message };
}
}
// Helper to extract SKU from Pokemon Center URL
function extractSkuFromUrl(url) {
if (!url) return null;
const match = url.match(/\/product\/([^\/\?]+)/);
return match ? match[1] : null;
}
// Listen for messages from popup and content scripts
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
if (message.type === "getConfig") {
sendResponse(config);
} else if (message.type === "saveConfig") {
config = { ...config, ...message.config };
saveConfig();
sendResponse({ success: true });
} else if (message.type === "runCheck") {
runStockCheck();
sendResponse({ success: true });
} else if (message.type === "getStats") {
sendResponse({
totalProducts: Object.keys(knownProducts).length,
enabled: config.enabled,
apiStats: apiStats,
knownSkuCount: knownSkus.size
});
} else if (message.type === "clearProducts") {
knownProducts = {};
saveProducts();
sendResponse({ success: true });
} else if (message.type === "clearSkus") {
knownSkus = new Set();
apiStats.totalSkusTracked = 0;
saveKnownSkus();
sendResponse({ success: true });
} else if (message.type === "apiData") {
// Handle API data from content script interceptor
handleApiData(message.data);
sendResponse({ success: true });
} else if (message.type === "syncToDashboard") {
// Manual sync to local dashboard
syncToDashboard().then(result => sendResponse(result));
return true; // Keep channel open for async response
}
return true;
});
// Run initial check after a short delay
setTimeout(async () => {
await loadConfig();
await loadPersistentTabId(); // must complete before any check runs
await loadBackoffState();
await loadCaptchaTabState();
loadProducts();
await loadKnownSkus();
console.log("[API Monitor] Ready - will intercept API calls when you browse Pokemon Center");
if (config.enabled) {
console.log(`Check interval: ${config.checkIntervalSeconds} seconds`);
startCheckLoop();
// Skip initial check if still in backoff window
if (Date.now() < botBackoffUntil) {
const remainingSec = Math.round((botBackoffUntil - Date.now()) / 1000);
console.log(`[Backoff] Startup — skipping initial check, backoff active for ${remainingSec}s more`);
} else if (!isChecking) {
isChecking = true;
runStockCheck().finally(() => { isChecking = false; });
}
}
}, 3000);