Sample Retrieving some Weather data from a 3rd party REST API

Sample - Retrieving some Weather data from a 3rd party REST API

What: retrieve some weather data from a 3rd party REST API

Why: to show all full, working end to end code scenario.

Here is the full code. It's also available as a gist.

using System;
using System.Net.Http;
using System.Threading.Tasks;
using WorldDomination.Net.Http;

namespace HttpClient.Helpers.SampleConsoleApplication
{
    public class Program
    {
        private static Uri MebourneWeatherApiEndpoint = new Uri(
            "http://api.openweathermap.org/data/2.5/weather?q=Melbourne,AU&APPID=e73e7e23d05a82823d68fbe5069766aa");


        // CONSOLE APP - ENTRY POINT. 
        // This just calls the real & fake methods, to compare both ways.
        private static void Main(string[] args)
        {
            Console.WriteLine("Starting sample console application.");
            Console.WriteLine("");
            Console.WriteLine("");

            Console.WriteLine("About to retrieve weather for Melbourne, Australia...");
            var json = GetCurrentWeather().Result;
            Console.WriteLine("Retrieved some result form the weather service ...");
            Console.WriteLine("");
            Console.WriteLine(json);
            Console.WriteLine("");

            Console.WriteLine("About to retrieve some fake weather result ...");
            var fakeResult = GetFakeWeather().Result;
            Console.WriteLine("Retrieved some fake result ...");
            Console.WriteLine("");
            Console.WriteLine(fakeResult);
            Console.WriteLine("");

            Console.WriteLine("End of sample console application. Thank you for trying this out :)");
            Console.WriteLine("");

        }

        // The main logic that _can_ call the real endpoint.
        // If no fake response is provided, then it does a REAL call. Otherwise, just return
        // the fake response.
        private static async Task<string> GetCurrentWeather(HttpMessageHandler fakeHttpMessageHandler = null)
        {
            string content;
            using (var httpClient = fakeHttpMessageHandler == null
                ? new System.Net.Http.HttpClient()
                : new System.Net.Http.HttpClient(fakeHttpMessageHandler))
            {
                content = await httpClient.GetStringAsync(MebourneWeatherApiEndpoint);
            }

            return content;
        }

        // How to create the fake response :)
        private static Task<string> GetFakeWeather()
        {
            // Set up the fake response for the Weather API Endpoint.
            var messageResponse = FakeHttpMessageHandler.GetStringHttpResponseMessage("I am some fake weather result");
            var options = new HttpMessageOptions
            {
                HttpResponseMessage = messageResponse,
                RequestUri = MebourneWeatherApiEndpoint
            };
            var messageHandler = new FakeHttpMessageHandler(options);

            // Now attempt to get the result. Only this time, the fake data will be returned and no network
            // traffic will leave your computer.
            return GetCurrentWeather(messageHandler);
        }
    }
}