Refit for Alma APIs

Program.cs

using Newtonsoft.Json;
using Refit;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace refitalma
{
  [Headers("Accept: application/json")]
  public interface IAlmaApi 
  {
    [Get("/almaws/v1/users/{userName}")]
    Task<AlmaUser> GetUser(string userName, [Header("Authorization")] string authorization);
  }

  public class AlmaUser
  {
    [JsonProperty(PropertyName = "first_name")]
    public string firstName {get; set;}

    [JsonProperty(PropertyName = "last_name")]
    public string lastName {get; set;}
  }

  class Program
  {
    public static string authHeader = 
      "apikey " + Environment.GetEnvironmentVariable("ALMA_APIKEY");

    public static async Task Main(string[] args)
    {
      var almaApi = RestService.For<IAlmaApi>("https://api-na.hosted.exlibrisgroup.com");
      var user = await almaApi.GetUser(args[0], authHeader);

      Console.WriteLine(
        String.Format("Successfully retrieved user: {0} ({1} {2})\n",
        args[0], user.firstName, user.lastName)
      );
    }
  }
}

To use:

dotnet new console
dotnet add package refit
wget https://gist.github.com/jweisman/c31048c7a88bd5e7580763b465a0de7a/raw/26cb60b4df1235d1c5bddeecc24d94f1afae2407/Program.cs -O Program.cs
export ALMA_APIKEY={API KEY}
dotnet run {user}

You may need to add <LangVersion>7.1</LangVersion> to the <PropertyGroup> in the .csproj.

See this blog for more details.