// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Aspire.Hosting.ApplicationModel;
 
namespace Aspire.Hosting.Azure;
 
/// <summary>
/// A resource that represents an Azure Blob Storage account.
/// </summary>
/// <param name="name">The name of the resource.</param>
/// <param name="storage">The <see cref="AzureStorageResource"/> that the resource is stored in.</param>
public class AzureBlobStorageResource(string name, AzureStorageResource storage) : Resource(name),
    IResourceWithConnectionString,
    IResourceWithParent<AzureStorageResource>,
    IResourceWithAzureFunctionsConfig
{
    /// <summary>
    /// Gets the parent AzureStorageResource of this AzureBlobStorageResource.
    /// </summary>
    public AzureStorageResource Parent => storage;
 
    /// <summary>
    /// Gets the connection string template for the manifest for the Azure Blob Storage resource.
    /// </summary>
    public ReferenceExpression ConnectionStringExpression =>
       Parent.GetBlobConnectionString();
 
    void IResourceWithAzureFunctionsConfig.ApplyAzureFunctionsConfiguration(IDictionary<string, object> target, string connectionName)
    {
        if (Parent.IsEmulator)
        {
            var connectionString = Parent.GetBlobConnectionString();
            target[connectionName] = connectionString;
            // Injected to support Aspire client integration for Azure Storage.
            target[$"{AzureStorageResource.BlobsConnectionKeyPrefix}__{connectionName}__ConnectionString"] = connectionString;
        }
        else
        {
            // Injected to support Azure Functions listener initialization and bookkeeping.
            // We inject both the blob service and queue service URIs since Functions
            // uses the queue service for its internal bookkeeping on blob triggers.
            target[$"{connectionName}__blobServiceUri"] = Parent.BlobEndpoint;
            target[$"{connectionName}__queueServiceUri"] = Parent.QueueEndpoint;
            // Injected to support Aspire client integration for Azure Storage.
            // We don't inject the queue resource here since we on;y want it to
            // be accessible by the Functions host.
            target[$"{AzureStorageResource.BlobsConnectionKeyPrefix}__{connectionName}__ServiceUri"] = Parent.BlobEndpoint;
        }
    }
}