Homely - ASP.NET Core MVC Helpers

This library contains a collection of helpers, models and extension methods that help reduce the time and ceremony to improve an ASP.NET-Core MVC WebApi/RESTful API.

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Samples / highlights

• Simple HomeController [HTTP-GET /] which can show a banner + assembly/build info.
• Json response-output to default with some common JsonSerializerOptions settings.
• Custom OpenAPI (aka. Swagger) wired up
• Simple, single way to do all of the above

Quick Start, do everything, simple and quick.

This adds all the items, using Default settings (as listed below). Simple, quick and awesome.
Add both of these.

public void ConfigureServices(IServiceCollection services)
{
    // - Home controller but no banner.
    // - Default json options: camel casing, no indention, nulls ignored and enums as strings.
    // - OpenApi adeed.
    services.AddControllers()
            .AddDefaultWebApiSettings(); // Can also be totally customized.
}

public void Configure(IApplicationBuilder app)
{
    // - Problem details
    // - OpenAPI
    // - Authorisation
    // - Endpoints (with MapControllers)
    app.UseDefaultWebApiSettings();
}

or a more customized version:

public void ConfigureServices(IServiceCollection services)
{
    // - Home controller but no banner.
    // - Default json options: camel casing, no indention, nulls ignored and enums as strings.
    // - OpenApi adeed.

    var banner = " -- ascii art --";
    var isStackTraceDisplayed = _webHostEnvironment.IsDevelopment();
    var isJsonIndented = _webHostEnvironment.IsDevelopment();
    var jsonDateTimeFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssZ" // No milliseconds.
    var openAPITitle = "My API";
    var openAPIVersion = "v1";
    var openAPICustomOperationIdSelector = new Func<ApiDescription, string>((apiDescrption, string) => { .. // refer to sample code in website } );

    services.AddControllers()
            .AddDefaultWebApiSettings(banner,
                                      isStackTraceDisplayed,
                                      isJsonIndented,
                                      jsonDateTimeFormat,
                                      openAPITitle,
                                      openAPIVersion,
                                      openAPICustomOperationIdSelector)
}

public void Configure(IApplicationBuilder app)
{
    // - Problem details
    // - OpenAPI (Customised)
    // - Authorisation
    // - Endpoints (with MapControllers)
    
    var useAuthorizatoin = true;
    var openAPITitle = "My API";
    var openAPIVersion = "v1";
    var openAPIRoutePrefix = "swagger";

    app.UseDefaultWebApiSettings(useAuthorization,
                                 openAPITitle,
                                 openAPIVersion,
                                 openAPIRoutePrefix);
}

Otherwise, you can pick and choose which items you want.

Simple HomeController [HTTP-GET /] which can show a banner + assembly/build info.

Great for API's, this will create the default "root/home" route => HTTP GET / with:

✅ Optional banner - some text (like ASCII ART)
✅ Build information about the an assembly.

public void ConfigureServices(IServiceCollection services)
{
    var someASCIIArt = "... blah .."; // Optional.

    services.AddControllers()
            .AddAHomeController(services, someASCIIArt);
}

E.g. output

      ___           ___           ___           ___           ___           ___                    ___           ___                 
     /\__\         /\  \         /\  \         /\__\         /\  \         /\  \                  /\  \         /\  \          ___   
    /:/  /        /::\  \       /::\  \       /::|  |       /::\  \        \:\  \                /::\  \       /::\  \        /\  \  
   /:/__/        /:/\:\  \     /:/\:\  \     /:|:|  |      /:/\:\  \        \:\  \              /:/\:\  \     /:/\:\  \       \:\  \ 
  /::\  \ ___   /:/  \:\  \   /::\~\:\  \   /:/|:|  |__   /::\~\:\  \       /::\  \            /::\~\:\  \   /::\~\:\  \      /::\__\
 /:/\:\  /\__\ /:/__/ \:\__\ /:/\:\ \:\__\ /:/ |:| /\__\ /:/\:\ \:\__\     /:/\:\__\          /:/\:\ \:\__\ /:/\:\ \:\__\  __/:/\/__/
 \/__\:\/:/  / \:\  \ /:/  / \/_|::\/:/  / \/__|:|/:/  / \:\~\:\ \/__/    /:/  \/__/          \/__\:\/:/  / \/__\:\/:/  / /\/:/  /   
      \::/  /   \:\  /:/  /     |:|::/  /      |:/:/  /   \:\ \:\__\     /:/  /                    \::/  /       \::/  /  \::/__/    
      /:/  /     \:\/:/  /      |:|\/__/       |::/  /     \:\ \/__/     \/__/                     /:/  /         \/__/    \:\__\    
     /:/  /       \::/  /       |:|  |         /:/  /       \:\__\                                /:/  /                    \/__/    
     \/__/         \/__/         \|__|         \/__/         \/__/                                \/__/                              

                                                                                                      S E R V I C E  ->  A C C O U N T S

Name: ApiGateway.Web
Version: 3.1.0.0
Build Date : Sunday, 7 June 2020 2:41:53 PM
Application Started: Monday, 8 June 2020 12:02:37 PM
Server name: PUREKROME-PC

Json output default to use the common JsonSerializerSettings.

All responses are JSON and formatted using the common JSON settings:

✅ CamelCase property names.
✅ Indented formatting.
✅ Ignore null properties which have values.
✅ Enums are rendered as string's ... not their backing number-value.
❤️ Can specify a custom DateTime format template.

// Simplest : i
public void ConfigureServices(IServiceCollection services)
{
    services.AddControllers()
            .AddDefaultJsonOptions();
}

or 

// All options...
public void ConfigureServices(IServiceCollection services)
{
    var isIndented = true;
    string dateTimeFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssZ" // No milliseconds.

    services.AddControllers()
            .AddDefaultJsonOptions(isIndented, dateTimeFormat);
}

Sample Model/Domain object:

new FakeVehicle
{
    Id = 1,
    Name = "Name1",
    RegistrationNumber = "RegistrationNumber1",
    Colour = ColourType.Grey,
    VIN = null
});

Result JSON text:

{
  "id": 1,
  "name": "Name1",
  "registrationNumber": "RegistrationNumber1",
  "colour": "Grey"
}

🖊️ Note on the default .NET Core DateTime formatting.
By default, it uses the ISO 8601-1:2019 format. This means if there is some microseconds, then they are rendered. If there's none -> no micrseconds are rendered. This might make it hard for some consumers of this data (e.g. iOS Swift apps consuming a .NET Core API) so you can hardcode a specific format template to get a consistent output.

Custom OpenAPI (aka. Swagger) wired up

OpenAPI (using the Swashbuckle library) has been wired up and allows for you to define the title and version of this API and also a custom route prefix (which is good for a gateway API with multiple OpenAPI endpoints because each microservice has their own OpenAPI doc).

public void ConfigureServices(IServiceCollection services)
{
    services.AddControllers()
            .AddCustomOpenApi("Test API", "v2");
}

public void Configure(IApplicationBuilder app)
{
    app.UseCustomOpenApi("accounts/swagger", "Test API", "v2")
       .UseRouting()
       .UseEndpoints(endpoints => endpoints.MapControllers());
}

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Contributing

Discussions and pull requests are encouraged :) Please ask all general questions in this repo or pick a specialized repo for specific, targetted issues. We also have a contributing document which goes into detail about how to do this.

Code of Conduct

Yep, we also have a code of conduct which applies to all repositories in the (GitHub) Homely organisation.

Feedback

Yep, refer to the contributing page about how best to give feedback - either good or needs-improvement :)

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