mirror of
https://github.com/Such-Software/wownerogue.git
synced 2026-10-27 18:18:52 +01:00
Feat: add IP-based rate limiting and house balance thresholds
This commit is contained in:
jwinterm
+114
-14
@@ -19,10 +19,17 @@ class AlertService {
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this.adminEmail = process.env.ADMIN_EMAIL;
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this.fromEmail = process.env.ALERT_FROM_EMAIL || 'alerts@monerogue.app';
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// Thresholds
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this.lowBalanceThreshold = parseInt(process.env.LOW_BALANCE_THRESHOLD) || 100000000000; // 0.1 XMR
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// Balance thresholds (atomic units)
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// BALANCE_WARN: sends email alert
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// BALANCE_CRITICAL: sends email AND halts new games
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this.balanceWarnThreshold = parseInt(process.env.BALANCE_WARN) || parseInt(process.env.LOW_BALANCE_THRESHOLD) || 100000000000; // 0.1 XMR default
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this.balanceCriticalThreshold = parseInt(process.env.BALANCE_CRITICAL) || 10000000000; // 0.01 XMR default
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this.highPendingThreshold = parseInt(process.env.HIGH_PENDING_THRESHOLD) || 10;
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// Track critical balance state for game halt
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this.isBalanceCritical = false;
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this.lastBalanceCheck = null;
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// Cooldowns (prevent alert spam)
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this.alertCooldown = parseInt(process.env.ALERT_COOLDOWN_MS) || 3600000; // 1 hour
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this.lastAlertSent = new Map();
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@@ -83,7 +90,9 @@ class AlertService {
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}
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/**
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* Check wallet balance and alert if low
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* Check wallet balance and alert if low or critical
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* BALANCE_WARN: sends email alert
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* BALANCE_CRITICAL: sends email AND sets isBalanceCritical flag (halts new games)
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*/
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async checkWalletBalance() {
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if (!this.walletService?.isHealthy) {
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@@ -92,23 +101,37 @@ class AlertService {
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try {
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const balance = await this.walletService.getBalance();
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const unlockedBalance = balance.unlocked_balance || 0;
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this.lastBalanceCheck = Date.now();
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if (balance.unlocked_balance < this.lowBalanceThreshold) {
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const balanceFormatted = (balance.unlocked_balance / 1e12).toFixed(6);
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const thresholdFormatted = (this.lowBalanceThreshold / 1e12).toFixed(6);
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const cryptoType = process.env.CRYPTO_TYPE || 'XMR';
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const cryptoType = process.env.CRYPTO_TYPE || 'XMR';
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const decimals = cryptoType === 'WOW' ? 11 : 12;
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const divisor = Math.pow(10, decimals);
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await this.sendAlert('low_balance', {
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subject: `⚠️ Wallet Balance Low - ${balanceFormatted} ${cryptoType}`,
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const balanceFormatted = (unlockedBalance / divisor).toFixed(6);
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// Check CRITICAL threshold first (more severe)
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if (unlockedBalance < this.balanceCriticalThreshold) {
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// Set critical flag - this will halt new games
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if (!this.isBalanceCritical) {
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this.isBalanceCritical = true;
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console.warn(`🚨 CRITICAL: Wallet balance is critically low (${balanceFormatted} ${cryptoType}). New games are HALTED.`);
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}
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const thresholdFormatted = (this.balanceCriticalThreshold / divisor).toFixed(6);
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await this.sendAlert('balance_critical', {
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subject: `🚨 CRITICAL: Wallet Balance Depleted - ${balanceFormatted} ${cryptoType}`,
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html: `
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<h2>Low Wallet Balance Warning</h2>
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<p>The payout wallet balance is running low:</p>
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<h2 style="color: #dc3545;">🚨 CRITICAL: Wallet Balance Depleted</h2>
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<p><strong>NEW GAMES HAVE BEEN HALTED.</strong></p>
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<p>The payout wallet balance is critically low:</p>
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<ul>
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<li><strong>Current Balance:</strong> ${balanceFormatted} ${cryptoType}</li>
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<li><strong>Unlocked:</strong> ${balanceFormatted} ${cryptoType}</li>
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<li><strong>Threshold:</strong> ${thresholdFormatted} ${cryptoType}</li>
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<li><strong>Critical Threshold:</strong> ${thresholdFormatted} ${cryptoType}</li>
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</ul>
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<p>Please top up the wallet to ensure payouts can continue.</p>
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<p style="color: #dc3545;"><strong>Users cannot start new paid games until the wallet is topped up.</strong></p>
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<p>Please add funds immediately to restore service.</p>
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<hr>
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<p style="color: #666; font-size: 12px;">
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Server: ${process.env.NODE_ENV || 'development'}<br>
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@@ -117,11 +140,88 @@ class AlertService {
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`
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});
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}
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// Check WARN threshold (less severe)
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else if (unlockedBalance < this.balanceWarnThreshold) {
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// Clear critical flag if we were critical but now just warning
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if (this.isBalanceCritical) {
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this.isBalanceCritical = false;
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console.log(`✅ Wallet balance restored above critical threshold. Games can resume.`);
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}
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const thresholdFormatted = (this.balanceWarnThreshold / divisor).toFixed(6);
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await this.sendAlert('balance_warn', {
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subject: `⚠️ Wallet Balance Low - ${balanceFormatted} ${cryptoType}`,
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html: `
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<h2>⚠️ Low Wallet Balance Warning</h2>
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<p>The payout wallet balance is running low:</p>
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<ul>
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<li><strong>Current Balance:</strong> ${balanceFormatted} ${cryptoType}</li>
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<li><strong>Warning Threshold:</strong> ${thresholdFormatted} ${cryptoType}</li>
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<li><strong>Critical Threshold:</strong> ${(this.balanceCriticalThreshold / divisor).toFixed(6)} ${cryptoType}</li>
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</ul>
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<p>Please top up the wallet soon to avoid service interruption.</p>
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<p>If balance drops below the critical threshold, new games will be automatically halted.</p>
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<hr>
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<p style="color: #666; font-size: 12px;">
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Server: ${process.env.NODE_ENV || 'development'}<br>
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Time: ${new Date().toISOString()}
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</p>
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`
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});
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} else {
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// Balance is healthy - clear critical flag if set
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if (this.isBalanceCritical) {
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this.isBalanceCritical = false;
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console.log(`✅ Wallet balance restored above thresholds. Games can resume.`);
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}
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}
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} catch (error) {
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console.error('Failed to check wallet balance for alerts:', error.message);
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}
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}
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/**
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* Check if new paid games should be halted due to critical balance
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* @returns {boolean} true if games should be halted
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*/
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shouldHaltGames() {
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return this.isBalanceCritical;
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}
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/**
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* Force refresh the balance check (useful when called before game start)
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* @returns {Object} { halted: boolean, reason?: string }
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*/
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async checkBalanceForGameStart() {
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if (!this.walletService?.isHealthy) {
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return { halted: true, reason: 'Wallet service is unavailable. Please try again later.' };
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}
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try {
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const balance = await this.walletService.getBalance();
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const unlockedBalance = balance.unlocked_balance || 0;
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if (unlockedBalance < this.balanceCriticalThreshold) {
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this.isBalanceCritical = true;
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const cryptoType = process.env.CRYPTO_TYPE || 'XMR';
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const decimals = cryptoType === 'WOW' ? 11 : 12;
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const balanceFormatted = (unlockedBalance / Math.pow(10, decimals)).toFixed(4);
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return {
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halted: true,
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reason: `Sorry, the house balance is too low to initiate new games (${balanceFormatted} ${cryptoType}). Please try again later.`
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};
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}
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this.isBalanceCritical = false;
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return { halted: false };
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} catch (error) {
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console.error('Failed to check balance for game start:', error.message);
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// On error, don't halt games - let them proceed
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return { halted: false };
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}
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}
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/**
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* Check for wallet disconnection
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*/
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