DotNetBrightener.SiteSettings 2025.0.9-preview-509

DotNetBrightener SiteSettings Module

Overview

The DotNetBrightener SiteSettings module provides a comprehensive solution for managing application-wide configuration settings in .NET applications. It offers a flexible, type-safe approach to storing and retrieving settings with built-in caching, database persistence, and RESTful API endpoints.

Key Features

• Type-safe settings management with strongly-typed setting classes
• Database persistence with support for SQL Server and PostgreSQL
• Built-in caching for optimal performance
• RESTful API endpoints for CRUD operations
• Automatic database migrations and schema management
• Localization support for error messages and descriptions
• Audit trail with creation/modification tracking
• Default value merging for backward compatibility

Architecture

The module follows a layered architecture:

• Controllers: RESTful API endpoints (SiteSettingsController)
• Services: Business logic (ISiteSettingService, SiteSettingService)
• Data Access: Repository pattern (ISiteSettingDataService)
• Models: Setting definitions (SiteSettingBase, SiteSettingWrapper<T>)
• Storage: Database-specific implementations (SQL Server, PostgreSQL)

Required Dependencies

Core NuGet Packages

<PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.7" />
<PackageReference Include="Microsoft.Extensions.Localization" Version="9.0.7" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />

Database-Specific Packages

For SQL Server:

<PackageReference Include="DotNetBrightener.SiteSettings.Data.Mssql" Version="[latest]" />

For PostgreSQL:

<PackageReference Include="DotNetBrightener.SiteSettings.Data.PostgreSql" Version="[latest]" />

Framework Dependencies

• DotNetBrightener.Caching.Abstractions: For caching functionality
• DotNetBrightener.DataAccess.Abstractions: For data access patterns

Integration Steps

Step 1: Install Required Packages

# Core package
dotnet add package DotNetBrightener.SiteSettings

# Choose your database provider
dotnet add package DotNetBrightener.SiteSettings.Data.Mssql
# OR
dotnet add package DotNetBrightener.SiteSettings.Data.PostgreSql

Step 2: Define Your Settings Classes

Create strongly-typed setting classes by inheriting from SiteSettingWrapper<T>:

using DotNetBrightener.SiteSettings.Models;

public class ApplicationSettings : SiteSettingWrapper<ApplicationSettings>
{
    public string ApplicationName { get; set; } = "My Application";
    public string SupportEmail { get; set; } = "support@example.com";
    public int MaxFileUploadSize { get; set; } = 10485760; // 10MB
    public bool EnableNotifications { get; set; } = true;

    public override string SettingName => "Application Settings";
    public override string Description => "General application configuration settings";
}

public class EmailSettings : SiteSettingWrapper<EmailSettings>
{
    public string SmtpServer { get; set; } = "localhost";
    public int SmtpPort { get; set; } = 587;
    public string Username { get; set; }
    public string Password { get; set; }
    public bool EnableSsl { get; set; } = true;

    public override string SettingName => "Email Settings";
    public override string Description => "SMTP configuration for email sending";
}

Step 3: Configure Services in Program.cs

using DotNetBrightener.SiteSettings;
using DotNetBrightener.SiteSettings.Extensions;

var builder = WebApplication.CreateBuilder(args);

// Add localization support
builder.Services.AddLocalization();

// Add MVC services
var mvcBuilder = builder.Services.AddControllersWithViews();

// Register SiteSettings API
mvcBuilder.RegisterSiteSettingApi();

// Configure database storage (choose one)
// For SQL Server:
builder.Services.AddSiteSettingsSqlServerStorage(
    builder.Configuration.GetConnectionString("DefaultConnection"));

// For PostgreSQL:
// builder.Services.AddSiteSettingsPostgreSqlStorage(
//     builder.Configuration.GetConnectionString("DefaultConnection"));

// Register your setting types
builder.Services.RegisterSettingType<ApplicationSettings>();
builder.Services.RegisterSettingType<EmailSettings>();

var app = builder.Build();

// Configure the HTTP request pipeline
app.MapControllers();

app.Run();

Step 4: Database Configuration

Add connection string to appsettings.json:

{
  "ConnectionStrings": {
    "DefaultConnection": "Server=localhost;Database=MyApp;Trusted_Connection=true;TrustServerCertificate=true;"
  }
}

The module will automatically create the required database schema and tables on first run.

API Endpoints

The module exposes the following RESTful endpoints:

Get All Available Settings

GET /api/SiteSettings/allSettings

Response:

[
  {
    "settingName": "Application Settings",
    "description": "General application configuration settings",
    "settingType": "MyApp.ApplicationSettings"
  }
]

Get Setting Values

GET /api/SiteSettings/{settingKey}

Example:

GET /api/SiteSettings/MyApp.ApplicationSettings

Response:

{
  "applicationName": "My Application",
  "supportEmail": "support@example.com",
  "maxFileUploadSize": 10485760,
  "enableNotifications": true
}

Get Default Setting Values

GET /api/SiteSettings/{settingKey}/default

Save Setting Values

POST /api/SiteSettings/{settingKey}
Content-Type: application/json

{
  "applicationName": "Updated App Name",
  "supportEmail": "newsupport@example.com",
  "maxFileUploadSize": 20971520,
  "enableNotifications": false
}

Programmatic Usage

Inject and Use Settings Service

using DotNetBrightener.SiteSettings.Abstractions;

[ApiController]
[Route("api/[controller]")]
public class MyController : ControllerBase
{
    private readonly ISiteSettingService _settingService;

    public MyController(ISiteSettingService settingService)
    {
        _settingService = settingService;
    }

    [HttpGet("app-info")]
    public IActionResult GetAppInfo()
    {
        var appSettings = _settingService.GetSetting<ApplicationSettings>();
        
        return Ok(new
        {
            Name = appSettings.ApplicationName,
            Support = appSettings.SupportEmail,
            MaxUpload = appSettings.MaxFileUploadSize
        });
    }

    [HttpPost("update-settings")]
    public IActionResult UpdateSettings([FromBody] ApplicationSettings settings)
    {
        _settingService.SaveSetting(settings);
        return Ok();
    }
}

Configuration Options

Caching Configuration

The module uses the DotNetBrightener caching system. Settings are cached for 10 minutes by default. Configure caching in your startup:

// Add memory caching
builder.Services.AddMemoryCache();

// Or Redis caching
builder.Services.AddStackExchangeRedisCache(options =>
{
    options.Configuration = "localhost:6379";
});

Database Schema

The module creates tables in the following schema:

SQL Server: SiteSettings.SiteSettingRecord PostgreSQL: site_settings.site_setting_record

Table Structure:

• Id (bigint, primary key)
• SettingType (nvarchar(1024)) - Fully qualified type name
• SettingContent (nvarchar(max)) - JSON serialized settings
• Audit fields: CreatedDate, CreatedBy, ModifiedDate, ModifiedBy
• Soft delete fields: IsDeleted, DeletedDate, DeletedBy, DeletionReason

Error Handling

The module provides localized error messages. Common error scenarios:

Setting Type Not Found

{
  "errorMessage": "Setting 'InvalidType' not found"
}

Invalid Setting Type

{
  "errorMessage": "Setting type must inherit from SiteSettingBase"
}

Advanced Features

Custom Contract Resolver

The module uses a custom JSON contract resolver (SiteSettingsContractResolver) for consistent serialization.

Default Value Merging

When retrieving settings, the module automatically merges saved values with default values, ensuring backward compatibility when new properties are added to setting classes.

Audit Trail

All setting changes are automatically tracked with creation and modification timestamps and user information.

Testing

Unit Testing Example

[Test]
public void Should_Save_And_Retrieve_Settings()
{
    // Arrange
    var settings = new ApplicationSettings
    {
        ApplicationName = "Test App",
        SupportEmail = "test@example.com"
    };

    // Act
    _settingService.SaveSetting(settings);
    var retrieved = _settingService.GetSetting<ApplicationSettings>();

    // Assert
    Assert.AreEqual("Test App", retrieved.ApplicationName);
    Assert.AreEqual("test@example.com", retrieved.SupportEmail);
}

Troubleshooting

Common Issues

1. Database Connection Issues

   • Verify connection string format
   • Ensure database server is accessible
   • Check firewall settings

2. Migration Issues

   • Ensure proper permissions for schema creation
   • Check if migrations are enabled in configuration

3. Caching Issues

   • Verify caching service is properly registered
   • Check cache key conflicts

4. Serialization Issues

   • Ensure setting properties have public getters/setters
   • Avoid circular references in setting objects

Performance Considerations

• Settings are cached for 10 minutes by default
• Use appropriate database indexes for SettingType column
• Consider using Redis for distributed caching in multi-instance deployments

Migration from Other Configuration Systems

From appsettings.json

1. Create setting classes for your configuration sections
2. Register setting types in DI container
3. Migrate values using the API or programmatically
4. Update code to use ISiteSettingService instead of IConfiguration

From Custom Configuration Tables

1. Create migration scripts to transform existing data
2. Map existing columns to setting class properties
3. Use the SaveSetting method to populate the new system

This integration guide provides everything needed to successfully implement the DotNetBrightener SiteSettings module in your .NET applications.