feat: ajustes do stripe

Controllers/QRController.cs

@@ -112,13 +112,21 @@ namespace QRRapidoApp.Controllers
                     _logger.LogInformation("QR code generated successfully - GenerationTime: {GenerationTimeMs}ms, FromCache: {FromCache}, Size: {Size}px",
                         generationStopwatch.ElapsedMilliseconds, result.FromCache, request.Size);
 
-                    // Update counter for free users
-                    if (!request.IsPremium && userId != null)
+                    // Update counter for all logged users
+                    if (userId != null)
                     {
-                        var remaining = await _userService.DecrementDailyQRCountAsync(userId);
-                        result.RemainingQRs = remaining;
-                        
-                        _logger.LogDebug("Updated QR count for free user - Remaining: {RemainingQRs}", remaining);
+                        if (request.IsPremium)
+                        {
+                            result.RemainingQRs = int.MaxValue; // Premium users have unlimited
+                            // Still increment the count for statistics
+                            await _userService.IncrementDailyQRCountAsync(userId);
+                        }
+                        else
+                        {
+                            var remaining = await _userService.IncrementDailyQRCountAsync(userId);
+                            result.RemainingQRs = remaining;
+                            _logger.LogDebug("Updated QR count for free user - Remaining: {RemainingQRs}", remaining);
+                        }
                     }
 
                     // Save to history if user is logged in (fire and forget)
@@ -467,11 +475,48 @@ namespace QRRapidoApp.Controllers
             }
         }
 
+        [HttpGet("GetUserStats")]
+        public async Task<IActionResult> GetUserStats()
+        {
+            try
+            {
+                var userId = User?.FindFirst(ClaimTypes.NameIdentifier)?.Value;
+                if (string.IsNullOrEmpty(userId))
+                {
+                    return Unauthorized();
+                }
+
+                var user = await _userService.GetUserAsync(userId);
+                var isPremium = user?.IsPremium ?? false;
+                
+                // For logged users (premium or not), return -1 to indicate unlimited
+                // For consistency with the frontend logic
+                var remainingCount = -1; // Unlimited for all logged users
+                
+                return Ok(new 
+                { 
+                    remainingCount = remainingCount,
+                    isPremium = isPremium,
+                    isUnlimited = true
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting user stats");
+                return StatusCode(500);
+            }
+        }
+
         private async Task<bool> CheckRateLimitAsync(string? userId, Models.User? user)
         {
+            // Premium users have unlimited QR codes
             if (user?.IsPremium == true) return true;
             
-            var dailyLimit = userId != null ? 50 : 10; // Logged in: 50/day, Anonymous: 10/day
+            // Logged users (non-premium) have unlimited QR codes
+            if (userId != null) return true;
+
+            // Anonymous users have 3 QR codes per day
+            var dailyLimit = 3;
             var currentCount = await _userService.GetDailyQRCountAsync(userId);
 
             return currentCount < dailyLimit;

Middleware/LanguageRedirectionMiddleware.cs

@@ -67,7 +67,8 @@ namespace QRRapidoApp.Middleware
                 "api/", "health", "_framework/", "lib/", "css/", "js/", "images/", 
                 "favicon.ico", "robots.txt", "sitemap.xml",
                 "signin-microsoft", "signin-google", "signout-callback-oidc",
-                "Account/ExternalLoginCallback", "Account/Logout"
+                "Account/ExternalLoginCallback", "Account/Logout", "Pagamento/CreateCheckout",
+                "Pagamento/StripeWebhook"
             };
 
             return specialRoutes.Any(route => path.StartsWith(route, StringComparison.OrdinalIgnoreCase));

QRRapidoApp.csproj

@@ -21,7 +21,7 @@
     <PackageReference Include="Serilog.Sinks.Async" Version="2.1.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="6.0.1-dev-00953" />
     <PackageReference Include="Serilog.Sinks.Seq" Version="9.0.0" />
-    <PackageReference Include="Stripe.net" Version="43.15.0" />
+    <PackageReference Include="Stripe.net" Version="48.4.0" />
     <PackageReference Include="StackExchange.Redis" Version="2.7.4" />
     <PackageReference Include="Microsoft.Extensions.Caching.StackExchangeRedis" Version="8.0.0" />
     <PackageReference Include="System.Drawing.Common" Version="8.0.0" />

README.md

@@ -343,3 +343,7 @@ Este projeto está licenciado sob a licença MIT - veja o arquivo [LICENSE](LICE
 **QR Rapido** - Velocidade extrema meets experiência excepcional 🚀
 
 *Desenvolvido com ❤️ para a comunidade de desenvolvedores*
+
+No WSL - Para rodar o webhook do stripe local.
+```bash
+stripe listen --forward-to https://localhost:52428/pagamento/stripewebhook --skip-verify

Resources/SharedResource.en.resx

@@ -774,4 +774,13 @@
   <data name="AllRightsReserved" xml:space="preserve">
     <value>All rights reserved.</value>
   </data>
+  <data name="QRCodesRemainingToday" xml:space="preserve">
+    <value>QR codes remaining today</value>
+  </data>
+  <data name="RateLimitExceeded" xml:space="preserve">
+    <value>Daily limit reached! Login for unlimited access.</value>
+  </data>
+  <data name="AnonymousUserLimit" xml:space="preserve">
+    <value>Anonymous users: 3 QR codes per day</value>
+  </data>
 </root>

Resources/SharedResource.es.resx

@@ -774,4 +774,13 @@
   <data name="AllRightsReserved" xml:space="preserve">
     <value>Todos los derechos reservados.</value>
   </data>
+  <data name="QRCodesRemainingToday" xml:space="preserve">
+    <value>Códigos QR restantes hoy</value>
+  </data>
+  <data name="RateLimitExceeded" xml:space="preserve">
+    <value>¡Límite diario alcanzado! Inicia sesión para acceso ilimitado.</value>
+  </data>
+  <data name="AnonymousUserLimit" xml:space="preserve">
+    <value>Usuarios anónimos: 3 códigos QR por día</value>
+  </data>
 </root>

Resources/SharedResource.pt-BR.resx

@@ -774,4 +774,13 @@
   <data name="AllRightsReserved" xml:space="preserve">
     <value>Todos os direitos reservados.</value>
   </data>
+  <data name="QRCodesRemainingToday" xml:space="preserve">
+    <value>QR codes restantes hoje</value>
+  </data>
+  <data name="RateLimitExceeded" xml:space="preserve">
+    <value>Limite diário atingido! Faça login para acesso ilimitado.</value>
+  </data>
+  <data name="AnonymousUserLimit" xml:space="preserve">
+    <value>Usuários anônimos: 3 QR codes por dia</value>
+  </data>
 </root>

Services/IUserService.cs

@@ -16,7 +16,8 @@ namespace QRRapidoApp.Services
         Task<User?> GetUserByStripeCustomerIdAsync(string customerId);
         Task<bool> UpdateUserAsync(User user);
         Task<int> GetDailyQRCountAsync(string? userId);
-        Task<int> DecrementDailyQRCountAsync(string userId);
+        Task<int> IncrementDailyQRCountAsync(string userId);
+        Task<int> GetRemainingQRCountAsync(string userId);
         Task<bool> CanGenerateQRAsync(string? userId, bool isPremium);
         Task SaveQRToHistoryAsync(string? userId, QRGenerationResult qrResult);
         Task<List<QRCodeHistory>> GetUserQRHistoryAsync(string userId, int limit = 50);

Services/StripeService.cs

@@ -78,7 +78,7 @@ namespace QRRapidoApp.Services
 
             switch (stripeEvent.Type)
             {
-                case Events.CheckoutSessionCompleted:
+                case "checkout.session.completed":
                     var session = stripeEvent.Data.Object as Session;
                     if (session?.SubscriptionId != null)
                     {
@@ -88,12 +88,27 @@ namespace QRRapidoApp.Services
                     }
                     break;
 
-                case Events.InvoicePaymentSucceeded:
+                case "invoice.finalized":
                     var invoice = stripeEvent.Data.Object as Invoice;
-                    if (invoice?.SubscriptionId != null)
+                    var subscriptionLineItem = invoice.Lines?.Data
+                        .FirstOrDefault(line =>
+                            !string.IsNullOrEmpty(line.SubscriptionId) ||
+                            line.Subscription != null
+                        );
+
+                    string subscriptionId = null;
+
+                    if (subscriptionLineItem != null)
+                    {
+                        // Tenta obter o ID da assinatura de duas formas diferentes
+                        subscriptionId = subscriptionLineItem.SubscriptionId
+                                      ?? subscriptionLineItem.Subscription?.Id;
+                    }
+
+                    if (subscriptionId != null)
                     {
                         var subscriptionService = new SubscriptionService();
-                        var subscription = await subscriptionService.GetAsync(invoice.SubscriptionId);
+                        var subscription = await subscriptionService.GetAsync(subscriptionId);
                         var user = await _userService.GetUserByStripeCustomerIdAsync(subscription.CustomerId);
                         if (user != null)
                         {
@@ -102,7 +117,7 @@ namespace QRRapidoApp.Services
                     }
                     break;
 
-                case Events.CustomerSubscriptionDeleted:
+                case "customer.subscription.deleted":
                     var deletedSubscription = stripeEvent.Data.Object as Subscription;
                     if (deletedSubscription != null)
                     {
@@ -118,6 +133,8 @@ namespace QRRapidoApp.Services
 
         private async Task ProcessSubscriptionActivation(string userId, Subscription subscription)
         {
+            var service = new SubscriptionItemService();
+            var subItem = service.Get(subscription.Items.Data[0].Id);
             if (string.IsNullOrEmpty(userId) || subscription == null)
             {
                 _logger.LogWarning("Could not process subscription activation due to missing userId or subscription data.");
@@ -136,7 +153,8 @@ namespace QRRapidoApp.Services
                 await _userService.UpdateUserStripeCustomerIdAsync(user.Id, subscription.CustomerId);
             }
 
-            await _userService.ActivatePremiumStatus(userId, subscription.Id, subscription.CurrentPeriodEnd);
+            await _userService.ActivatePremiumStatus(userId, subscription.Id, subItem.CurrentPeriodEnd);
+
             _logger.LogInformation($"Successfully processed premium activation/renewal for user {userId}.");
         }
 

Services/UserService.cs

@@ -142,7 +142,7 @@ namespace QRRapidoApp.Services
             }
         }
 
-        public async Task<int> DecrementDailyQRCountAsync(string userId)
+        public async Task<int> IncrementDailyQRCountAsync(string userId)
         {
             try
             {
@@ -163,23 +163,47 @@ namespace QRRapidoApp.Services
                 user.TotalQRGenerated++;
                 await UpdateUserAsync(user);
 
-                // Calculate remaining QRs for free users
-                var dailyLimit = user.IsPremium ? int.MaxValue : _config.GetValue<int>("Premium:FreeQRLimit", 50);
-                return Math.Max(0, dailyLimit - user.DailyQRCount);
+                // Premium and logged users have unlimited QR codes
+                return int.MaxValue;
             }
             catch (Exception ex)
             {
-                _logger.LogError(ex, $"Error decrementing daily QR count for user {userId}: {ex.Message}");
+                _logger.LogError(ex, $"Error incrementing daily QR count for user {userId}: {ex.Message}");
+                return 0;
+            }
+        }
+
+        public async Task<int> GetRemainingQRCountAsync(string userId)
+        {
+            try
+            {
+                var user = await GetUserAsync(userId);
+                if (user == null) return 0;
+
+                // Premium users have unlimited
+                if (user.IsPremium) return int.MaxValue;
+
+                // Logged users (non-premium) have unlimited
+                return int.MaxValue;
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, $"Error getting remaining QR count for user {userId}: {ex.Message}");
                 return 0;
             }
         }
 
         public async Task<bool> CanGenerateQRAsync(string? userId, bool isPremium)
         {
+            // Premium users have unlimited QR codes
             if (isPremium) return true;
             
+            // Logged users (non-premium) have unlimited QR codes
+            if (!string.IsNullOrEmpty(userId)) return true;
+
+            // Anonymous users have 3 QR codes per day
             var dailyCount = await GetDailyQRCountAsync(userId);
-            var limit = string.IsNullOrEmpty(userId) ? 10 : _config.GetValue<int>("Premium:FreeQRLimit", 50);
+            var limit = 3;
 
             return dailyCount < limit;
         }

Views/Home/Index.cshtml

@@ -12,7 +12,22 @@
 
 <div class="container">
     <!-- Hidden input for JavaScript premium status check -->
-    <input type="hidden" id="user-premium-status" value="@(ViewBag.IsPremium == true ? "true" : "false")" />
+    @{
+        var statusValue = "anonymous";
+        if (User.Identity.IsAuthenticated)
+        {
+            var isPremium = await AdService.HasValidPremiumSubscription(userId);
+            statusValue = isPremium ? "premium" : "logged-in";
+        }
+    }
+    <input type="hidden" id="user-premium-status" value="@statusValue" />
+    
+    <!-- Hidden localized strings for rate limiting -->
+    <div style="display: none;">
+        <span data-localized="RateLimitExceeded">@Localizer["RateLimitExceeded"]</span>
+        <span data-localized="QRCodesRemainingToday">@Localizer["QRCodesRemainingToday"]</span>
+        <span data-localized="UnlimitedToday">@Localizer["UnlimitedToday"]</span>
+    </div>
     
     <div class="row">
         <!-- QR Generator Form -->
@@ -55,18 +70,9 @@
                                 </div>
                             </div>
                             <div class="col-md-4 text-end">
-                                @if (User.Identity.IsAuthenticated)
-                                {
-                                    <small class="text-muted">
-                                        <span class="qr-counter">@Localizer["UnlimitedToday"]</span>
-                                    </small>
-                                }
-                                else
-                                {
-                                    <small class="text-muted">
-                                        <span class="qr-counter">@Localizer["QRCodesRemaining"]</span>
-                                    </small>
-                                }
+                                <small class="text-muted">
+                                    <span class="qr-counter">Carregando...</span>
+                                </small>
                             </div>
                         </div>
 

Views/Pagamento/Sucesso.cshtml

@@ -1,6 +1,7 @@
 @using Microsoft.Extensions.Localization
 @inject IStringLocalizer<QRRapidoApp.Resources.SharedResource> Localizer
 @{
+    Layout = "~/Views/Shared/_Layout.cshtml";
     ViewData["Title"] = "Sucesso";
 }
 

appsettings.json

@@ -21,10 +21,10 @@
     }
   },
   "Stripe": {
-    "PublishableKey": "pk_test_xxxxx",
-    "SecretKey": "sk_test_xxxxx",
-    "WebhookSecret": "whsec_xxxxx",
-    "PriceId": "price_xxxxx"
+    "PublishableKey": "pk_test_51Rs42tBeR5IFYUsBooapyDwQTgh6CFuKbya5R3MVDTrdOUKmgiHQYipU0pgOdG5iKogH77RUYIKBJzbCt5BghUOY00xitV5KiN",
+    "SecretKey": "sk_test_51Rs42tBeR5IFYUsBtycRlJJcdwgoMbh8MfQIKIGelBPTQFwDcOn2iCCbw5uG6hnqlpgNAUuFgWRAUUMA8qkABKun00EIx4odDF",
+    "WebhookSecret": "whsec_2e828803ceb48e7865458b0cf332b68535fdff8753d26d69b1c88ea55cb0e482",
+    "PriceId": "prod_SnfQTxwE3i8r5L"
   },
   "AdSense": {
     "ClientId": "ca-pub-XXXXXXXXXX",
@@ -41,7 +41,7 @@
   },
   "Premium": {
     "FreeQRLimit": 10,
-    "PremiumPrice": 19.90,
+    "PremiumPrice": 12.90,
     "Features": {
       "UnlimitedQR": true,
       "DynamicQR": true,

wwwroot/js/qr-speed-generator.js

@@ -1,4 +1,4 @@
-// QR Rapido Speed Generator
+// QR Rapido Speed Generator
 class QRRapidoGenerator { 
     constructor() {
         this.startTime = 0;
@@ -49,7 +49,9 @@ class QRRapidoGenerator {
         this.checkAdFreeStatus();
         this.updateLanguage();
         this.updateStatsCounters();
+        this.initializeUserCounter();
         this.initializeProgressiveFlow();
+        this.initializeRateLimiting();
         
         // Validar segurança dos dados após carregamento
         setTimeout(() => {
@@ -345,6 +347,9 @@ class QRRapidoGenerator {
     async generateQRWithTimer(e) {
         e.preventDefault();
         
+        // Check rate limit for anonymous users
+        if (!this.checkRateLimit()) return;
+        
         // Validation
         if (!this.validateForm()) return;
         
@@ -708,9 +713,17 @@ class QRRapidoGenerator {
             generationTime: generationTime
         };
 
-        // Update counter for free users
+        // Increment rate limit counter after successful generation
+        this.incrementRateLimit();
+        
+        // Update counter for logged users
         if (result.remainingQRs !== undefined) {
-            this.updateRemainingCounter(result.remainingQRs);
+            if (result.remainingQRs === -1 || result.remainingQRs === 2147483647 || result.remainingQRs >= 1000000) {
+                // Logged user - show unlimited
+                this.showUnlimitedCounter();
+            } else {
+                this.updateRemainingCounter(result.remainingQRs);
+            }
         }
     }
 
@@ -965,6 +978,27 @@ class QRRapidoGenerator {
         }, 30000); // Update every 30 seconds
     }
 
+    async initializeUserCounter() {
+        try {
+            const response = await fetch('/api/QR/GetUserStats');
+            if (response.ok) {
+                const stats = await response.json();
+                console.log('User stats loaded:', stats);
+                console.log('remainingCount:', stats.remainingCount, 'type:', typeof stats.remainingCount);
+                console.log('isUnlimited:', stats.isUnlimited);
+                
+                // For logged users, always show unlimited (they all have unlimited QR codes)
+                console.log('Calling showUnlimitedCounter directly for logged user');
+                this.showUnlimitedCounter();
+            } else {
+                console.log('GetUserStats response not ok:', response.status);
+            }
+        } catch (error) {
+            // If not authenticated or error, keep the default "Carregando..." text
+            console.debug('User not authenticated or error loading stats:', error);
+        }
+    }
+
     trackGenerationEvent(type, time) {
         // Google Analytics
         if (typeof gtag !== 'undefined') {
@@ -1332,8 +1366,15 @@ class QRRapidoGenerator {
 
     updateRemainingCounter(remaining) {
         const counterElement = document.querySelector('.qr-counter');
-        if (counterElement) {
-            counterElement.textContent = `${remaining} QR codes restantes hoje`;
+        if (counterElement && remaining !== null && remaining !== undefined) {
+            // If it's unlimited (any special value indicating unlimited)
+            if (remaining === -1 || remaining >= 2147483647 || remaining > 1000000) {
+                this.showUnlimitedCounter();
+                return;
+            }
+            
+            const remainingText = this.getLocalizedString('QRCodesRemainingToday');
+            counterElement.textContent = `${remaining} ${remainingText}`;
             
             if (remaining <= 3) {
                 counterElement.className = 'badge bg-warning qr-counter';
@@ -1344,6 +1385,18 @@ class QRRapidoGenerator {
         }
     }
 
+    showUnlimitedCounter() {
+        console.log('showUnlimitedCounter called');
+        const counterElement = document.querySelector('.qr-counter');
+        if (counterElement) {
+            counterElement.textContent = 'QR Codes ilimitados';
+            counterElement.className = 'badge bg-success qr-counter';
+            console.log('Set counter to: QR Codes ilimitados');
+        } else {
+            console.log('Counter element not found');
+        }
+    }
+
     showError(message) {
         this.showAlert(message, 'danger');
     }
@@ -1996,6 +2049,258 @@ class QRRapidoGenerator {
         
         console.groupEnd();
     }
+
+    // Rate Limiting Methods
+    initializeRateLimiting() {
+        // Wait a bit for DOM to be fully ready
+        setTimeout(() => {
+            this.updateRateDisplayCounter();
+        }, 100);
+    }
+
+    checkRateLimit() {
+        // Check if user is logged in (unlimited access)
+        const userStatus = document.getElementById('user-premium-status');
+        console.log('🔍 Rate limit check - User status:', userStatus ? userStatus.value : 'not found');
+        
+        if (userStatus && userStatus.value === 'logged-in') {
+            console.log('✅ User is logged in - unlimited access');
+            return true; // Unlimited for logged users
+        }
+
+        // For anonymous users, check daily limit
+        const today = new Date().toDateString();
+        const cookieName = 'qr_daily_count';
+        const rateLimitData = this.getCookie(cookieName);
+        
+        console.log('📅 Today:', today);
+        console.log('🍪 Cookie data:', rateLimitData);
+
+        let currentData = { date: today, count: 0 };
+        
+        if (rateLimitData) {
+            try {
+                currentData = JSON.parse(rateLimitData);
+                console.log('📊 Parsed data:', currentData);
+                
+                // Reset count if it's a new day
+                if (currentData.date !== today) {
+                    console.log('🔄 New day detected, resetting count');
+                    currentData = { date: today, count: 0 };
+                }
+            } catch (e) {
+                console.log('❌ Error parsing cookie:', e);
+                currentData = { date: today, count: 0 };
+            }
+        } else {
+            console.log('🆕 No cookie found, starting fresh');
+        }
+
+        console.log('📈 Current count:', currentData.count);
+
+        // Check if limit exceeded (don't increment here)
+        if (currentData.count >= 3) {
+            console.log('🚫 Rate limit exceeded');
+            this.showRateLimitError();
+            return false;
+        }
+
+        console.log('✅ Rate limit check passed');
+        return true;
+    }
+
+    incrementRateLimit() {
+        // Only increment after successful QR generation
+        const userStatus = document.getElementById('user-premium-status');
+        if (userStatus && userStatus.value === 'logged-in') {
+            return; // No limits for logged users
+        }
+
+        const today = new Date().toDateString();
+        const cookieName = 'qr_daily_count';
+        const rateLimitData = this.getCookie(cookieName);
+
+        let currentData = { date: today, count: 0 };
+        
+        if (rateLimitData) {
+            try {
+                currentData = JSON.parse(rateLimitData);
+                if (currentData.date !== today) {
+                    currentData = { date: today, count: 0 };
+                }
+            } catch (e) {
+                currentData = { date: today, count: 0 };
+            }
+        }
+
+        // Increment count and save
+        currentData.count++;
+        this.setCookie(cookieName, JSON.stringify(currentData), 1);
+        
+        // Update display counter
+        this.updateRateDisplayCounter();
+    }
+
+    showRateLimitError() {
+        const message = this.getLocalizedString('RateLimitExceeded') || 'Daily limit reached! Login for unlimited access.';
+        this.showError(message);
+    }
+
+    updateRateDisplayCounter() {
+        const counterElement = document.querySelector('.qr-counter');
+        if (!counterElement) return;
+
+        // Check user status
+        const userStatus = document.getElementById('user-premium-status');
+        
+        if (userStatus && userStatus.value === 'premium') {
+            // Premium users have unlimited QRs
+            const unlimitedText = this.getLocalizedString('UnlimitedToday');
+            counterElement.textContent = unlimitedText;
+            counterElement.className = 'badge bg-success qr-counter';
+            return;
+        } else if (userStatus && userStatus.value === 'logged-in') {
+            // Free logged users - we need to get their actual remaining count
+            this.updateLoggedUserCounter();
+            return;
+        }
+
+        // For anonymous users, show remaining count
+        const today = new Date().toDateString();
+        const cookieName = 'qr_daily_count';
+        const rateLimitData = this.getCookie(cookieName);
+
+        let remaining = 3;
+        
+        if (rateLimitData) {
+            try {
+                const currentData = JSON.parse(rateLimitData);
+                if (currentData.date === today) {
+                    remaining = Math.max(0, 3 - currentData.count);
+                }
+            } catch (e) {
+                remaining = 3;
+            }
+        }
+
+        const remainingText = this.getLocalizedString('QRCodesRemainingToday');
+        counterElement.textContent = `${remaining} ${remainingText}`;
+    }
+
+    async updateLoggedUserCounter() {
+        const counterElement = document.querySelector('.qr-counter');
+        if (!counterElement) return;
+
+        try {
+            // Fetch user's remaining QR count from the server
+            const response = await fetch('/api/QR/GetUserStats', {
+                method: 'GET',
+                headers: {
+                    'Content-Type': 'application/json',
+                }
+            });
+
+            if (response.ok) {
+                const data = await response.json();
+                
+                if (data.isPremium) {
+                    // Premium user - show unlimited
+                    const unlimitedText = this.getLocalizedString('UnlimitedToday');
+                    counterElement.textContent = unlimitedText;
+                    counterElement.className = 'badge bg-success qr-counter';
+                } else {
+                    // Free user - show remaining count
+                    const remaining = data.remainingCount || 0;
+                    const remainingText = this.getLocalizedString('QRCodesRemainingToday');
+                    if (remaining !== -1) { 
+                        counterElement.textContent = `${remaining} ${remainingText}`;
+
+                        counterElement.className = 'badge bg-primary qr-counter';
+                        if (remaining <= 3) {
+                            counterElement.className = 'badge bg-warning qr-counter';
+                        }
+                        if (remaining === 0) {
+                            counterElement.className = 'badge bg-danger qr-counter';
+                        }
+                    }
+                    else {
+                        const unlimitedText = this.getLocalizedString('UnlimitedToday');
+                        counterElement.textContent = unlimitedText;
+                        counterElement.className = 'badge bg-success qr-counter';
+                    }
+                }
+            } else {
+                // Fallback to showing 50 remaining if API fails
+                const remainingText = this.getLocalizedString('QRCodesRemainingToday');
+                counterElement.textContent = `50 ${remainingText}`;
+                counterElement.className = 'badge bg-primary qr-counter';
+            }
+        } catch (error) {
+            console.warn('Failed to fetch user stats:', error);
+            // Fallback to showing 50 remaining if API fails
+            const remainingText = this.getLocalizedString('QRCodesRemainingToday');
+            counterElement.textContent = `50 ${remainingText}`;
+            counterElement.className = 'badge bg-primary qr-counter';
+        }
+    }
+
+    getLocalizedString(key) {
+        // Try to get from server-side localization first
+        const element = document.querySelector(`[data-localized="${key}"]`);
+        if (element) {
+            const text = element.textContent.trim() || element.value;
+            if (text) return text;
+        }
+        
+        // Fallback to client-side strings
+        if (this.languageStrings[this.currentLang] && this.languageStrings[this.currentLang][key]) {
+            return this.languageStrings[this.currentLang][key];
+        }
+        
+        // Default fallbacks based on key
+        const defaults = {
+            'UnlimitedToday': 'Ilimitado hoje',
+            'QRCodesRemainingToday': 'QR codes restantes hoje',
+            'RateLimitExceeded': 'Limite diário atingido! Faça login para acesso ilimitado.'
+        };
+        
+        return defaults[key] || key;
+    }
+
+    setCookie(name, value, days) {
+        const expires = new Date();
+        expires.setTime(expires.getTime() + (days * 24 * 60 * 60 * 1000));
+        document.cookie = `${name}=${value};expires=${expires.toUTCString()};path=/;SameSite=Strict`;
+    }
+
+    getCookie(name) {
+        const nameEQ = name + "=";
+        const ca = document.cookie.split(';');
+        for (let i = 0; i < ca.length; i++) {
+            let c = ca[i];
+            while (c.charAt(0) === ' ') c = c.substring(1, c.length);
+            if (c.indexOf(nameEQ) === 0) return c.substring(nameEQ.length, c.length);
+        }
+        return null;
+    }
+
+    // Debug/reset function - call from console if needed
+    resetRateLimit() {
+        // Multiple ways to clear the cookie
+        document.cookie = 'qr_daily_count=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;';
+        document.cookie = 'qr_daily_count=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/; domain=' + window.location.hostname + ';';
+        document.cookie = 'qr_daily_count=; max-age=0; path=/;';
+        
+        // Also clear from storage if exists
+        if (typeof Storage !== "undefined") {
+            localStorage.removeItem('qr_daily_count');
+            sessionStorage.removeItem('qr_daily_count');
+        }
+        
+        this.updateRateDisplayCounter();
+        console.log('🧹 Rate limit completely reset!');
+        console.log('🍪 All cookies:', document.cookie);
+    }
 }
 
 // Initialize when DOM loads