Authorize New User.md

Authorize New User (Token Retrieval)

Author

Kris Craig

Required libraries

Reddit.NET Auth Token Retriever

Overview

Authorize a new Reddit user for your app and return the refresh token.

Library Installation

In the NuGet Package Manager console:

Install-Package Reddit.AuthTokenRetrieverLib

The Code

using Reddit.AuthTokenRetriever;
using System.Diagnostics;

...

public static string AuthorizeUser(string appId, string appSecret = null, int port = 8080)
{
	// Create a new instance of the auth token retrieval library.  --Kris
	AuthTokenRetrieverLib authTokenRetrieverLib = new AuthTokenRetrieverLib(appId, appSecret, port);
	
	// Start the callback listener.  --Kris
	// Note - Ignore the logging exception message if you see it.  You can use Console.Clear() after this call to get rid of it if you're running a console app.
	authTokenRetrieverLib.AwaitCallback();
	
	// Open the browser to the Reddit authentication page.  Once the user clicks "accept", Reddit will redirect the browser to localhost:8080, where AwaitCallback will take over.  --Kris
	OpenBrowser(authTokenRetrieverLib.AuthURL());
	
	// Replace this with whatever you want the app to do while it waits for the user to load the auth page and click Accept.  --Kris
	while (true) { }
	
	// Cleanup.  --Kris
	authTokenRetrieverLib.StopListening();
	
	return authTokenRetrieverLib.RefreshToken;
}

public static void OpenBrowser(string authUrl, string browserPath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe")
{
    try
    {
        ProcessStartInfo processStartInfo = new ProcessStartInfo(authUrl);
        Process.Start(processStartInfo);
    }
    catch (System.ComponentModel.Win32Exception)
    {
        // This typically occurs if the runtime doesn't know where your browser is.  Use BrowserPath for when this happens.  --Kris
        ProcessStartInfo processStartInfo = new ProcessStartInfo(browserPath)
        {
            Arguments = authUrl
        };
        Process.Start(processStartInfo);
    }
}

Source File

Authorize New User.cs