/// <summary>
/// This method gets called by the runtime. Use this method to add services to the container.
/// </summary>
/// <param name="services">Specifies the contract for a <see cref="IServiceCollection"/> of service descriptors.</param>
/// <seealso cref="IStatePropertyAccessor{T}"/>
/// <seealso cref="https://docs.microsoft.com/en-us/aspnet/web-api/overview/advanced/dependency-injection"/>
/// <seealso cref="https://docs.microsoft.com/en-us/azure/bot-service/bot-service-manage-channels?view=azure-bot-service-4.0"/>
public void ConfigureServices(IServiceCollection services)
{
services.AddBot <CardsBot>(options =>
{
var secretKey = Configuration.GetSection("botFileSecret")?.Value;
var botFilePath = Configuration.GetSection("botFilePath")?.Value;
if (!File.Exists(botFilePath))
{
throw new FileNotFoundException($"The .bot configuration file was not found. botFilePath: {botFilePath}");
}
// Loads .bot configuration file and adds a singleton that your Bot can access through dependency injection.
var botConfig = BotConfiguration.Load(botFilePath ?? @".\using-cards.bot", secretKey);
services.AddSingleton(sp => botConfig ?? throw new InvalidOperationException($"The .bot configuration file could not be loaded. botFilePath: {botFilePath}"));
// Retrieve current endpoint.
var environment = _isProduction ? "production" : "development";
var service = botConfig.Services.FirstOrDefault(s => s.Type == "endpoint" && s.Name == environment);
if (!(service is EndpointService endpointService))
{
throw new InvalidOperationException($"The .bot file does not contain an endpoint with name '{environment}'.");
}
options.CredentialProvider = new SimpleCredentialProvider(endpointService.AppId, endpointService.AppPassword);
// Creates a logger for the application to use.
ILogger logger = _loggerFactory.CreateLogger <CardsBot>();
// Catches any errors that occur during a conversation turn and logs them.
options.OnTurnError = async(context, exception) =>
{
logger.LogError($"Exception caught : {exception}");
await context.SendActivityAsync("Sorry, it looks like something went wrong.");
};
// The Memory Storage used here is for local bot debugging only. When the bot
// is restarted, everything stored in memory will be gone.
IStorage dataStore = new MemoryStorage();
// For production bots use the Azure Blob or
// Azure CosmosDB storage providers. For the Azure
// based storage providers, add the Microsoft.Bot.Builder.Azure
// Nuget package to your solution. That package is found at:
// https://www.nuget.org/packages/Microsoft.Bot.Builder.Azure/
// Uncomment the following lines to use Azure Blob Storage
// //Storage configuration name or ID from the .bot file.
// const string StorageConfigurationId = "<STORAGE-NAME-OR-ID-FROM-BOT-FILE>";
// var blobConfig = botConfig.FindServiceByNameOrId(StorageConfigurationId);
// if (!(blobConfig is BlobStorageService blobStorageConfig))
// {
// throw new InvalidOperationException($"The .bot file does not contain an blob storage with name '{StorageConfigurationId}'.");
// }
// // Default container name.
// const string DefaultBotContainer = "<DEFAULT-CONTAINER>";
// var storageContainer = string.IsNullOrWhiteSpace(blobStorageConfig.Container) ? DefaultBotContainer : blobStorageConfig.Container;
// IStorage dataStore = new Microsoft.Bot.Builder.Azure.AzureBlobStorage(blobStorageConfig.ConnectionString, storageContainer);
// Create Conversation State object.
// The Conversation State object is where we persist anything at the conversation-scope.
var conversationState = new ConversationState(dataStore);
options.State.Add(conversationState);
});
// Create and register state accessors.
// Accessors created here are passed into the IBot-derived class on every turn.
services.AddSingleton <CardsBotAccessors>(sp =>
{
var options = sp.GetRequiredService <IOptions <BotFrameworkOptions> >().Value;
if (options == null)
{
throw new InvalidOperationException(
"BotFrameworkOptions must be configured prior to setting up the State Accessors");
}
var conversationState = options.State.OfType <ConversationState>().FirstOrDefault();
if (conversationState == null)
{
throw new InvalidOperationException(
"ConversationState must be defined and added before adding conversation-scoped state accessors.");
}
// Create custom state property accessors.
// State property accessors enable components to read and write individual properties,
// without having to pass the entire state object.
var accessors = new CardsBotAccessors(conversationState)
{
ConversationDialogState = conversationState.CreateProperty <DialogState>(CardsBotAccessors.DialogStateName),
};
return(accessors);
});
}
/// <summary>
/// Initializes a new instance of the <see cref="CardsBot"/> class.
/// In the constructor for the bot we are instantiating our <see cref="DialogSet"/>, giving our field a value,
/// and adding our <see cref="WaterfallDialog"/> and <see cref="ChoicePrompt"/> to the dialog set.
/// </summary>
/// <param name="accessors">A class containing <see cref="IStatePropertyAccessor{T}"/> used to manage state.</param>
public CardsBot(CardsBotAccessors accessors)
{
this._accessors = accessors ?? throw new ArgumentNullException(nameof(accessors));
this._dialogs = new DialogSet(accessors.ConversationDialogState);
this._dialogs.Add(new WaterfallDialog("cardSelector", new WaterfallStep[] { ShowCardStepAsync }));
}