Slackbot.Net.Endpoints 6.0.4

Slackbot.NET

What?

An opinionated ASP.NET Core middleware to create simple Slackbots using the Slack event API.

Install

Download it from NuGet:

$ dotnet add package slackbot.net.endpoints

Supported events

• challenge
• app_mention
• view_submission
• member_joined_channel

Configuration

A slack app can be distributed either as a single-workspace application (1 single Slack token), or as a distributed Slack application where other workspaces can install it them self either via a web page, or via the Slack App Store.

Single workspace Slack app

var builder = WebApplication.CreateBuilder(args);

// Needed to verify that incoming event payloads are from Slack
builder.Services.AddAuthentication()
                .AddSlackbotEvents(c =>
                    c.SigningSecret = Environment.GetEnvironmentVariable("SIGNING_SECRET")
                );

// Setup event handlers
builder.Services.AddSlackBotEvents()
                .AddAppMentionHandler<DoStuff>()


var app = builder.Build();
app.UseSlackbot(); // event endpoint
app.Run();

class DoStuff : IHandleAppMentions
{
    public bool ShouldHandle(AppMentionEvent slackEvent) => slackEvent.Text.Contains("hi");

    public Task<EventHandledResponse> Handle(EventMetaData meta, AppMentionEvent @evt)
    {
        Console.WriteLine("Doing stuff!");
        return Task.FromResult(new EventHandledResponse("yolo"));
    }
}

Advanced: Distributed Slack app

Implement the ITokenStore to store/remote on install/uninstall flows.

var builder = WebApplication.CreateBuilder(args);

// Needed to verify that incoming event payloads are from Slack
builder.Services.AddAuthentication()
               .AddSlackbotEvents(c => c.
                   SigningSecret = Environment.GetEnvironmentVariable("SIGNING_SECRET")
               );

builder.Services.AddSlackbotDistribution(c => {
   c.CLIENT_ID = Environment.GetEnvironmentVariable("CLIENT_ID");
   c.CLIENT_SECRET = Environment.GetEnvironmentVariable("CLIENT_SECRET");
});

// Setup event handlers
builder.Services.AddSlackBotEvents<MyTokenStore>()
               .AddAppMentionHandler<DoStuff>()


var app = builder.Build();
app.Map("/authorize", a => a.UseSlackbotDistribution()); // OAuth callback endpoint
app.Map("/events", a => a.UseSlackbot()); // event endpoint
app.Run();


/// Bring-your-own-token-store:
class MyTokenStore : ITokenStore
{
   // _db is some persistance technology you choose (sql, mongo, whatever)
   public Task<Workspace Delete(string teamId) => _db.DeleteByTeamId(teamId);
   public Task Insert(Workspace slackTeam) => _db.Insert(slackTeam);
}

Samples

Check the samples.