// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Aspire.Azure.Messaging.EventHubs;
using Azure.Core.Extensions;
using Azure.Messaging.EventHubs.Producer;
using Microsoft.Extensions.Azure;
using Microsoft.Extensions.Configuration;
 
namespace Microsoft.Extensions.Hosting;
 
internal sealed class EventHubBufferedProducerClientComponent : EventHubsComponent<AzureMessagingEventHubsBufferedProducerSettings, EventHubBufferedProducerClient, EventHubBufferedProducerClientOptions>
{
    protected override void BindSettingsToConfiguration(AzureMessagingEventHubsBufferedProducerSettings settings,
        IConfiguration configuration)
    {
        configuration.Bind(settings);
    }
 
    protected override void BindClientOptionsToConfiguration(IAzureClientBuilder<EventHubBufferedProducerClient, EventHubBufferedProducerClientOptions> clientBuilder, IConfiguration configuration)
    {
#pragma warning disable IDE0200 // Remove unnecessary lambda expression - needed so the ConfigBinder Source Generator works
        clientBuilder.ConfigureOptions(options => configuration.Bind(options));
#pragma warning restore IDE0200
    }
 
    protected override IAzureClientBuilder<EventHubBufferedProducerClient, EventHubBufferedProducerClientOptions> AddClient(AzureClientFactoryBuilder azureFactoryBuilder,
        AzureMessagingEventHubsBufferedProducerSettings settings, string connectionName, string configurationSectionName)
    {
        return ((IAzureClientFactoryBuilderWithCredential) azureFactoryBuilder)
            .RegisterClientFactory<EventHubBufferedProducerClient, EventHubBufferedProducerClientOptions>(
                (options, cred) =>
                {
                    // ensure that the connection string or namespace+eventhubname is provided 
                    EnsureConnectionStringOrNamespaceProvided(settings, connectionName, configurationSectionName);
 
                    // If no connection is provided use TokenCredential
                    if (string.IsNullOrEmpty(settings.ConnectionString))
                    {
                        return new EventHubBufferedProducerClient(settings.FullyQualifiedNamespace, settings.EventHubName, cred, options);
                    }
 
                    // If no specific EventHubName is provided, it has to be in the connection string
                    if (string.IsNullOrEmpty(settings.EventHubName))
                    {
                        return new EventHubBufferedProducerClient(settings.ConnectionString, options);
                    }
 
                    return new EventHubBufferedProducerClient(settings.ConnectionString, settings.EventHubName, options);
 
                }, requiresCredential: false);
    }
}