feat: ratelimit

OnlyOneAccessTemplate/Attributes/RateLimitAttribute.cs

@@ -0,0 +1,28 @@
+using Microsoft.AspNetCore.Mvc.Filters;
+using OnlyOneAccessTemplate.Services;
+
+namespace OnlyOneAccessTemplate.Attributes
+{
+    public class RateLimitAttribute : ActionFilterAttribute
+    {
+        public override async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
+        {
+            var rateLimitService = context.HttpContext.RequestServices.GetRequiredService<IRateLimitService>();
+            var ipAddress = context.HttpContext.Connection.RemoteIpAddress?.ToString();
+
+            if (!string.IsNullOrEmpty(ipAddress))
+            {
+                await rateLimitService.RecordRequestAsync(ipAddress);
+
+                if (await rateLimitService.ShouldShowCaptchaAsync(ipAddress))
+                {
+                    var captcha = await rateLimitService.GenerateCaptchaAsync();
+                    context.HttpContext.Items["ShowCaptcha"] = true;
+                    context.HttpContext.Items["CaptchaChallenge"] = captcha.Challenge;
+                }
+            }
+
+            await next();
+        }
+    }
+}

OnlyOneAccessTemplate/Models/ConverterConfig.cs

@@ -0,0 +1,29 @@
+using MongoDB.Bson.Serialization.Attributes;
+using MongoDB.Bson;
+
+namespace OnlyOneAccessTemplate.Models
+{
+    public class ConverterConfig
+    {
+        [BsonId]
+        [BsonRepresentation(BsonType.ObjectId)]
+        public string Id { get; set; } = string.Empty;
+
+        public string Name { get; set; } = string.Empty;
+        public string Route { get; set; } = string.Empty; // ex: "converter-pdf-para-word"
+        public string Title { get; set; } = string.Empty; // SEO title
+        public string Description { get; set; } = string.Empty; // SEO description
+        public string Keywords { get; set; } = string.Empty; // SEO keywords
+        public bool IsActive { get; set; } = true;
+        public string InputType { get; set; } = string.Empty; // "pdf", "image", "text"
+        public string OutputType { get; set; } = string.Empty; // "word", "jpg", "uppercase"
+        public string Icon { get; set; } = string.Empty;
+        public string Language { get; set; } = string.Empty; // "pt", "en", "es"
+
+        // Configurações específicas do conversor
+        public Dictionary<string, object> Settings { get; set; } = new();
+
+        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+        public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+    }
+}

OnlyOneAccessTemplate/Models/RateLimits/RateLimitEntry.cs

@@ -0,0 +1,11 @@
+namespace OnlyOneAccessTemplate.Models.RateLimits
+{
+    public class RateLimitEntry
+    {
+        public string IpAddress { get; set; } = string.Empty;
+        public int RequestCount { get; set; }
+        public DateTime LastRequest { get; set; }
+        public bool RequiresCaptcha { get; set; }
+        public DateTime? CaptchaExpiry { get; set; }
+    }
+}

OnlyOneAccessTemplate/Models/SiteConfiguration.cs

@@ -31,6 +31,9 @@ namespace OnlyOneAccessTemplate.Models
         
         public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
         public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+        public string Domain { get; set; } = string.Empty;
+        public string TwitterHandle { get; set; } = string.Empty;
+        public Dictionary<string, string> CustomMeta { get; set; } = new();
     }
 
     public class HomePageContent

OnlyOneAccessTemplate/OnlyOneAccessTemplate.csproj

@@ -19,6 +19,8 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Localization" Version="2.3.0" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="10.0.0-preview.4.25258.110" />
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.20.1" />
     <PackageReference Include="MongoDB.Driver" Version="3.4.0" />
     <PackageReference Include="Polly" Version="8.4.0" />

OnlyOneAccessTemplate/Program.cs

@@ -70,6 +70,22 @@ builder.Services.AddSingleton<IMongoClient>(sp =>
     return new MongoClient(connectionString);
 });
 
+
+// Rate Limiting Service
+builder.Services.AddScoped<IRateLimitService, RateLimitService>();
+
+// Configuration Service (para substituir o ISiteConfigurationService se necessário)
+builder.Services.AddScoped<IConfigurationService, ConfigurationService>();
+
+// Configuração de localização para SEO multi-idioma
+builder.Services.Configure<RequestLocalizationOptions>(options =>
+{
+    var supportedCultures = new[] { "pt-BR", "en-US", "es-ES" };
+    options.SetDefaultCulture(supportedCultures[0])
+           .AddSupportedCultures(supportedCultures)
+           .AddSupportedUICultures(supportedCultures);
+}); 
+
 builder.Services.AddScoped(sp =>
 {
     var client = sp.GetRequiredService<IMongoClient>();
@@ -138,6 +154,37 @@ app.UseSession();
 app.UseResponseCompression();
 app.UseResponseCaching();
 
+app.UseRequestLocalization();
+
+// Middleware para detectar configuração por domínio
+app.Use(async (context, next) =>
+{
+    var host = context.Request.Host.Host;
+    var configService = context.RequestServices.GetRequiredService<IConfigurationService>();
+    var config = await configService.GetConfigurationAsync(host);
+    context.Items["SiteConfig"] = config;
+
+    // Se não encontrou config por domínio, usar fallback baseado no idioma da URL
+    if (config == null)
+    {
+        var pathSegments = context.Request.Path.Value?.Split('/', StringSplitOptions.RemoveEmptyEntries);
+        var language = "pt"; // default
+
+        if (pathSegments?.Length > 0 && new[] { "en", "es", "pt" }.Contains(pathSegments[0]))
+        {
+            language = pathSegments[0];
+        }
+
+        // Usar seu serviço existente como fallback
+        var siteConfigService = context.RequestServices.GetRequiredService<ISiteConfigurationService>();
+        var fallbackConfig = await siteConfigService.GetConfigurationAsync(language);
+        context.Items["SiteConfig"] = fallbackConfig;
+    }
+
+    await next();
+});
+
+
 app.UseRouting();
 
 // Custom routing for multilingual support
@@ -153,9 +200,18 @@ app.MapControllerRoute(
 
 // Rotas específicas por idioma
 app.MapControllerRoute(
-    name: "multilingual",
-    pattern: "{language:regex(en|es)}/{controller=Home}/{action=Index}/{id?}");
+    name: "converter_localized_specific",
+    pattern: "{language:regex(^(pt|en|es)$)}/{converter}",
+    defaults: new { controller = "Converter", action = "Index" });
 
+// Rota para home localizada
+app.MapControllerRoute(
+    name: "home_localized",
+    pattern: "{language:regex(^(pt|en|es)$)}",
+    defaults: new { controller = "Home", action = "Index" });
+
+// Manter suas rotas de API existentes (não mexer)
+// Rota padrão para português (fallback)
 app.MapControllerRoute(
     name: "default",
     pattern: "{controller=Home}/{action=Index}/{id?}");

OnlyOneAccessTemplate/Services/ConfigurationService.cs

@@ -0,0 +1,45 @@
+using Microsoft.Extensions.Caching.Memory;
+using MongoDB.Driver;
+using OnlyOneAccessTemplate.Models;
+
+namespace OnlyOneAccessTemplate.Services
+{
+    public class ConfigurationService : IConfigurationService
+    {
+        private readonly IMongoDatabase _database;
+        private readonly IMemoryCache _cache;
+
+        public ConfigurationService(IMongoDatabase database, IMemoryCache cache)
+        {
+            _database = database;
+            _cache = cache;
+        }
+
+        public async Task<SiteConfiguration> GetConfigurationAsync(string domain)
+        {
+            var cacheKey = $"config_{domain}";
+            if (_cache.TryGetValue(cacheKey, out SiteConfiguration cachedConfig))
+                return cachedConfig;
+
+            var collection = _database.GetCollection<SiteConfiguration>("SiteConfigurations");
+            var config = await collection.Find(x => x.Domain == domain).FirstOrDefaultAsync();
+
+            if (config != null)
+                _cache.Set(cacheKey, config, TimeSpan.FromMinutes(30));
+
+            return config;
+        }
+
+        public async Task<List<ConverterConfig>> GetConvertersAsync(string language)
+        {
+            var collection = _database.GetCollection<ConverterConfig>("Converters");
+            return await collection.Find(x => x.IsActive).ToListAsync();
+        }
+
+        public async Task<ConverterConfig> GetConverterAsync(string id, string language)
+        {
+            var collection = _database.GetCollection<ConverterConfig>("Converters");
+            return await collection.Find(x => x.Id == id && x.IsActive).FirstOrDefaultAsync();
+        }
+    }
+}

OnlyOneAccessTemplate/Services/Interfaces.cs

@@ -112,6 +112,21 @@ namespace OnlyOneAccessTemplate.Services
         string GenerateAdHtml(string position, string adSlot, AdSize size = AdSize.Responsive);
     }
 
+    public interface IConfigurationService
+    {
+        Task<SiteConfiguration> GetConfigurationAsync(string domain);
+        Task<List<ConverterConfig>> GetConvertersAsync(string language);
+        Task<ConverterConfig> GetConverterAsync(string id, string language);
+    }
+
+    public interface IRateLimitService
+    {
+        Task<bool> ShouldShowCaptchaAsync(string ipAddress);
+        Task RecordRequestAsync(string ipAddress);
+        Task<(bool IsValid, string Challenge)> GenerateCaptchaAsync();
+        Task<bool> ValidateCaptchaAsync(string challenge, string response);
+    }
+
     public enum AdSize
     {
         Responsive,

OnlyOneAccessTemplate/Services/RateLimitService.cs

@@ -0,0 +1,96 @@
+using Microsoft.Extensions.Caching.Memory;
+using OnlyOneAccessTemplate.Models.RateLimits;
+
+namespace OnlyOneAccessTemplate.Services
+{
+    public class RateLimitService : IRateLimitService
+    {
+        private readonly IMemoryCache _cache;
+        private readonly IConfiguration _configuration;
+        private const int MAX_REQUESTS_PER_HOUR = 50;
+        private const int CAPTCHA_THRESHOLD = 20;
+
+        public RateLimitService(IMemoryCache cache, IConfiguration configuration)
+        {
+            _cache = cache;
+            _configuration = configuration;
+        }
+
+        public async Task<bool> ShouldShowCaptchaAsync(string ipAddress)
+        {
+            var key = $"rate_limit_{ipAddress}";
+            if (_cache.TryGetValue(key, out RateLimitEntry entry))
+            {
+                // Resetar contador se passou mais de 1 hora
+                if (DateTime.UtcNow.Subtract(entry.LastRequest).TotalHours > 1)
+                {
+                    entry.RequestCount = 0;
+                }
+
+                return entry.RequestCount >= CAPTCHA_THRESHOLD;
+            }
+            return false;
+        }
+
+        public async Task RecordRequestAsync(string ipAddress)
+        {
+            var key = $"rate_limit_{ipAddress}";
+            if (_cache.TryGetValue(key, out RateLimitEntry entry))
+            {
+                entry.RequestCount++;
+                entry.LastRequest = DateTime.UtcNow;
+            }
+            else
+            {
+                entry = new RateLimitEntry
+                {
+                    IpAddress = ipAddress,
+                    RequestCount = 1,
+                    LastRequest = DateTime.UtcNow
+                };
+            }
+
+            _cache.Set(key, entry, TimeSpan.FromHours(2));
+        }
+
+        public async Task<(bool IsValid, string Challenge)> GenerateCaptchaAsync()
+        {
+            // Captcha matemático simples
+            var random = new Random();
+            var num1 = random.Next(1, 10);
+            var num2 = random.Next(1, 10);
+            var operation = random.Next(0, 2) == 0 ? "+" : "-";
+
+            var challenge = $"{num1} {operation} {num2}";
+            var answer = operation == "+" ? num1 + num2 : num1 - num2;
+
+            var challengeKey = Guid.NewGuid().ToString();
+            _cache.Set($"captcha_{challengeKey}", answer, TimeSpan.FromMinutes(10));
+
+            return (true, $"{challenge}|{challengeKey}");
+        }
+
+        public async Task<bool> ValidateCaptchaAsync(string challenge, string response)
+        {
+            if (string.IsNullOrEmpty(challenge) || string.IsNullOrEmpty(response))
+                return false;
+
+            var parts = challenge.Split('|');
+            if (parts.Length != 2) return false;
+
+            var challengeKey = parts[1];
+            var cacheKey = $"captcha_{challengeKey}";
+
+            if (_cache.TryGetValue(cacheKey, out int expectedAnswer))
+            {
+                _cache.Remove(cacheKey);
+                if (int.TryParse(response, out int userAnswer))
+                {
+                    return userAnswer == expectedAnswer;
+                }
+            }
+
+            return false;
+        }
+    }
+}

OnlyOneAccessTemplate/Views/BaseViewModel.cs

@@ -0,0 +1,26 @@
+using OnlyOneAccessTemplate.Models;
+
+namespace OnlyOneAccessTemplate.Views
+{
+    public class BaseViewModel
+    {
+        public SiteConfiguration SiteConfig { get; set; }
+        public string CurrentLanguage { get; set; }
+        public bool ShowCaptcha { get; set; }
+        public string CaptchaChallenge { get; set; }
+    }
+
+    public class HomeViewModel : BaseViewModel
+    {
+        public List<ConverterConfig> AvailableConverters { get; set; } = new();
+    }
+
+    public class ConverterViewModel : BaseViewModel
+    {
+        public ConverterConfig Converter { get; set; }
+        public string InputContent { get; set; } = string.Empty;
+        public string OutputContent { get; set; } = string.Empty;
+        public bool HasError { get; set; }
+        public string ErrorMessage { get; set; } = string.Empty;
+    }
+}

OnlyOneAccessTemplate/appsettings.Production.json

@@ -51,5 +51,9 @@
       "RectanglePre": "SEU_SLOT_ID_2"
     }
   },
+  "RateLimiting": {
+    "MaxRequestsPerHour": 50,
+    "CaptchaThreshold": 20
+  },
   "AllowedHosts": "*"
 }

OnlyOneAccessTemplate/appsettings.json

@@ -52,5 +52,9 @@
       "RectanglePre": "SEU_SLOT_ID_2"
     }
   },
+  "RateLimiting": {
+    "MaxRequestsPerHour": 50,
+    "CaptchaThreshold": 20
+  },
   "AllowedHosts": "*"
 }