MinApiLib.Hypermedia 8.0.0

MinApiLib.Hypermedia

This package contains extensions to use hypermedia in your projects.

Installation

You can install this package using the NuGet package manager:

Install-Package MinApiLib.Hypermedia

Or using the .NET CLI:

dotnet add package MinApiLib.Hypermedia

Usage

To use hypermedia, you need to add the following code in your Program.cs:

global using MinApiLib.Hypermedia;
// ...
builder.Services.AddHypermedia();
// ...
app.MapEndpoints()
   .WithHypermedia();

It will use "application/vnd.hypermedia+json" as default mime type, but you can change it by adding the contentType parameter:

builder.Services.AddHypermedia(contentType: "application/vnd.my.format+json");

Then you should create your hypermedia providers for your response models:

public record struct Response(HashedId Id, string Name);

public class ResponseHypermediaProvider : HypermediaProvider<Response>
{
    protected override IEnumerable<HypermediaLink> GetLinksFor(Response @object)
    {
        yield return new HypermediaLink("self", "/things/" + @object.Id, "GET");
        yield return new HypermediaLink("update", "/things/" + @object.Id, "PUT");
        yield return new HypermediaLink("delete", "/things/" + @object.Id, "DELETE");
        yield return new HypermediaLink("beers", "/things", "GET");
    }
}

public record GetThing() : GetEndpoint("/things/{id}")
{
    public IResult Handle(int id)
        => Results.Ok(new Response(id, "John Doe"));
}

You should add "application/vnd.hypermedia+json" as "Accept" header in order to get hypermedia links:

$ curl -H "Accept: application/vnd.hypermedia+json" "http://localhost:5000/things/1"
{"value":{"id":"Wk","name":"John Doe"},"links":[{"href":"http://localhost:5000/things/Wk","rel":"self","method":"GET"},{"href":"http://localhost:5000/things/Wk","rel":"update","method":"PUT"},{"href":"http://localhost:5000/things/Wk","rel":"delete","method":"DELETE"},{"href":"http://localhost:5000/things","rel":"beers","method":"GET"}]}%