Add project files.

.dockerignore

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+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/azds.yaml
+**/bin
+**/charts
+**/docker-compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md

Validador.API/Controllers/ValidadorController.cs

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+using Microsoft.AspNetCore.Mvc;
+using Validador.API.Models;
+
+namespace Validador.API.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class ValidadorController : ControllerBase
+    {
+        [HttpPost]
+        public IActionResult Validate([FromForm] ValidadorModel model)
+        {
+            var validador = Application.Factory.Create(model.CollectionName);
+            var errorList =validador.ValidateSchema(model.XmlText);
+            if (errorList.Count > 0)
+            {
+                return BadRequest(errorList);
+            }
+            return Ok();
+        }
+    }
+}

Validador.API/Dockerfile

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+#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging.
+
+FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
+WORKDIR /app
+EXPOSE 80
+EXPOSE 443
+
+FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+WORKDIR /src
+COPY ["Validador.API/Validador.API.csproj", "Validador.API/"]
+RUN dotnet restore "Validador.API/Validador.API.csproj"
+COPY . .
+WORKDIR "/src/Validador.API"
+RUN dotnet build "Validador.API.csproj" -c Release -o /app/build
+
+FROM build AS publish
+RUN dotnet publish "Validador.API.csproj" -c Release -o /app/publish
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "Validador.API.dll"]

Validador.API/Models/ValidadorModel.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace Validador.API.Models
+{
+    public class ValidadorModel
+    {
+        [Required]
+        public string CollectionName { get; set; }
+        [Required]
+        public string XmlText { get; set; }
+    }
+}

Validador.API/Program.cs

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+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+
+builder.Services.AddControllers();
+// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
+
+app.UseHttpsRedirection();
+
+app.UseAuthorization();
+
+app.MapControllers();
+
+app.Run();

Validador.API/Properties/launchSettings.json

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+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:17700",
+      "sslPort": 44325
+    }
+  },
+  "profiles": {
+    "Validador.API": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "applicationUrl": "https://localhost:7077;http://localhost:5077",
+      "dotnetRunMessages": true
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "Docker": {
+      "commandName": "Docker",
+      "launchBrowser": true,
+      "launchUrl": "{Scheme}://{ServiceHost}:{ServicePort}/swagger",
+      "publishAllPorts": true,
+      "useSSL": true
+    }
+  }
+}

Validador.API/Validador.API.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>b19b3e5b-3f96-4c84-a094-a766d2305d1f</UserSecretsId>
+    <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.14.0" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Validador\Validador.Application.csproj" />
+  </ItemGroup>
+
+</Project>

Validador.API/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

Validador.API/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}

Validador/Collections/Abrasf.cs

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+namespace Validador.Application
+{
+    public class Abrasf : Collection
+    {
+        public Abrasf()
+        {
+            CollectionName = "Abrasf";
+        }
+
+        public override void SetSchemas()
+        {
+            Schema.Add(null, Path.Combine(SchemaDirectoryPath, "nfse_v2-03 2016.xsd"));
+            Schema.Add(null, Path.Combine(SchemaDirectoryPath, "xmldsig-core-schema20020212.xsd"));
+        }
+    }
+}

Validador/Collections/Betha.cs

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+using System.Xml;
+
+namespace Validador.Application
+{
+    public class Betha : Collection
+    {
+        public Betha()
+        {
+            CollectionName = "Betha";
+        }
+
+        public override void SetSchemas()
+        {
+            Schema.Add(null, Path.Combine(SchemaDirectoryPath, "nfse_v01.xsd"));
+            XmlReader reader = XmlReader.Create(Path.Combine(SchemaDirectoryPath, "xmldsig-core-schema_v01.xsd"));
+            Schema.Add(null, reader);
+        }
+    }
+}

Validador/Collections/Collection.cs

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+using System.Reflection;
+using System.Xml;
+using System.Xml.Linq;
+using System.Xml.Schema;
+
+namespace Validador.Application
+{
+    public abstract class Collection
+    {
+        private static readonly string DirectoryPath = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
+        public string CollectionName { get; set; }
+        public XmlSchemaSet Schema { get; set; }
+        public string SchemaDirectoryPath
+        {
+            get
+            {
+                return Path.Combine(DirectoryPath, "Schemas", this.CollectionName);
+            }
+        }
+
+        public Collection()
+        {
+            Schema = new XmlSchemaSet();
+            CollectionName = "Abrasf";
+        }
+
+        private readonly List<string> ValidationErrors = new();
+
+        public List<string> ValidateSchema(string xmlString)
+        {
+            SetSchemas();
+            XmlReader reader = XmlReader.Create(new StringReader(xmlString));
+            XDocument document = XDocument.Load(reader);
+            document.Validate(Schema, ValidationEventHandler);
+            return ValidationErrors;
+        }
+
+        private void ValidationEventHandler(object sender, ValidationEventArgs e)
+        {
+            ValidationErrors.Add(e.Message);
+        }
+
+        public abstract void SetSchemas();
+    }
+}

Validador/Collections/ECollections.cs

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+
+namespace Validador.Application
+{
+    public enum ECollections
+    {
+        Abrasf,
+        Ginfes,
+        Betha
+    }
+}

Validador/Collections/Ginfes.cs

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+namespace Validador.Application
+{
+    public class Ginfes : Collection
+    {
+        public Ginfes()
+        {
+            CollectionName = "Ginfes";
+        }
+
+        public override void SetSchemas()
+        {
+            Schema.Add(null, Path.Combine(SchemaDirectoryPath, "tipos_v03.xsd"));
+            Schema.Add(null, Path.Combine(SchemaDirectoryPath, "cabecalho_v03.xsd"));
+            Schema.Add(null, Path.Combine(SchemaDirectoryPath, "servico_enviar_lote_rps_envio_v03.xsd"));
+            Schema.Add(null, Path.Combine(SchemaDirectoryPath, "servico_consultar_situacao_lote_rps_envio_v03.xsd"));
+            Schema.Add(null, Path.Combine(SchemaDirectoryPath, "xmldsig-core-schema20020212_v03.xsd"));
+        }
+    }
+}

Validador/Factory.cs

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+namespace Validador.Application
+{
+    public static class Factory
+    {
+        public static Collection Create(ECollections collection)
+        {
+            return Create(collection.ToString());
+        }
+
+        public static Collection Create(string collection)
+        {
+            switch (collection)
+            {
+                default:
+                    return new Abrasf();
+                case "Ginfes":
+                    return new Ginfes();
+                case "Betha":
+                    return new Betha();
+            }
+        }
+    }
+}