Workplace Integration with Azure Bot Framework

This repository helps to resolve the Workplace / Facebook integration problem with Microsoft Bot Framework. Below are the steps followed in this repository for establising connection between Facebook /Workplace and Microsoft Bot Framework

1. Install the Facebook Adapter Nuget Package using the below script in the Package Manager Console

    Install-Package Microsoft.Bot.Builder.Adapters.Facebook
   

2. Create an Adapter Class for Handling requests from FB / Worplace like the one below.

    public class AdapterWithFBErrorHandler : FacebookAdapter
    {
    	public AdapterWithFBErrorHandler(IConfiguration configuration, ILogger<BotFrameworkHttpAdapter> logger)
    	    : base(configuration, logger)
    	{
    	    OnTurnError = async (turnContext, exception) =>
    	    {
    		// Log any leaked exception from the application.
    		logger.LogError(exception, $"[OnTurnError] unhandled error : {exception.Message}");
   
    		// Send a message to the user
    		await turnContext.SendActivityAsync("The bot encountered an error or bug.");
    		await turnContext.SendActivityAsync("To continue to run this bot, please fix the bot source code.");
   
    		// Send a trace activity, which will be displayed in the Bot Framework Emulator
    		await turnContext.TraceActivityAsync("OnTurnError Trace", exception.Message, "https://www.botframework.com/schemas/error", "TurnError");
    	    };
    	}
    	}
   

3. Register the created Adapter class in Startup.cs file as below.

    // Create the FB Adapter for handling requests from FB / Workplace
    services.AddSingleton<FacebookAdapter, AdapterWithFBErrorHandler>();
   

4. Next step is to create an endpoint for handling requests from FB / Workplace This can be achieved by creating a controller in BotController.cs file.

    [Route("api/facebook")]
    [ApiController]
    public class FBController : ControllerBase
    {
    private readonly IBotFrameworkHttpAdapter Adapter;
    private readonly IBot Bot;
   
    public FBController(IBotFrameworkHttpAdapter adapter, IBot bot)
    {
        Adapter = adapter;
        Bot = bot;
    }
   
    [HttpPost, HttpGet]
    public async Task PostAsync()
    {
        // Delegate the processing of the HTTP POST to the adapter.
        // The adapter will invoke the bot.
        await Adapter.ProcessAsync(Request, Response, Bot);
    }
   

   }

5. To establish connection between Facebook and Azure, create a verify token and store in appsetting.json file like below.

   "FacebookVerifyToken": "", // You can create an unique token which needs to be configured in Facebook / Workplace "FacebookAppSecret": "", // App Secret taken from FB when creating App in FB for Chatbot "FacebookAccessToken": ""// Access token taken from FB when creating App in FB for Chatbot

Note : In Facebook / Workplace configurations, specify your App Service end point as the one like below. https://yoursite.azurewebsites.net/api/facebook along with the FacebookVerifyToken you created in appsettings.json.

Happy Coding!!