// 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;
using Aspire.Hosting.Azure;
using Azure.Provisioning;
using Azure.Provisioning.OperationalInsights;
 
namespace Aspire.Hosting;
 
/// <summary>
/// Provides extension methods for adding the Azure Log Analytics Workspace resources to the application model.
/// </summary>
public static class AzureLogAnalyticsWorkspaceExtensions
{
    /// <summary>
    /// Adds an Azure Log Analytics Workspace resource to the application model.
    /// </summary>
    /// <param name="builder">The <see cref="IDistributedApplicationBuilder"/>.</param>
    /// <param name="name">The name of the resource. This name will be used as the connection string name when referenced in a dependency.</param>
    /// <returns>A reference to the <see cref="IResourceBuilder{T}"/>.</returns>
    [AspireExport("addAzureLogAnalyticsWorkspace", Description = "Adds an Azure Log Analytics Workspace resource")]
    public static IResourceBuilder<AzureLogAnalyticsWorkspaceResource> AddAzureLogAnalyticsWorkspace(this IDistributedApplicationBuilder builder, [ResourceName] string name)
    {
        ArgumentNullException.ThrowIfNull(builder);
        ArgumentNullException.ThrowIfNull(name);
 
        builder.AddAzureProvisioning();
 
        var configureInfrastructure = (AzureResourceInfrastructure infrastructure) =>
        {
            var workspace = AzureProvisioningResource.CreateExistingOrNewProvisionableResource(infrastructure,
                (identifier, name) =>
                {
                    var resource = OperationalInsightsWorkspace.FromExisting(identifier);
                    resource.Name = name;
                    return resource;
                },
                (infrastructure) => new OperationalInsightsWorkspace(infrastructure.AspireResource.GetBicepIdentifier())
                {
                    Sku = new OperationalInsightsWorkspaceSku()
                    {
                        Name = OperationalInsightsWorkspaceSkuName.PerGB2018
                    },
                    Tags = { { "aspire-resource-name", name } }
                });
 
            infrastructure.Add(new ProvisioningOutput("logAnalyticsWorkspaceId", typeof(string))
            {
                Value = workspace.Id.ToBicepExpression()
            });
            
            // Add name output for the resource to externalize role assignments
            infrastructure.Add(new ProvisioningOutput("name", typeof(string))
            {
                Value = workspace.Name.ToBicepExpression()
            });
        };
 
        var resource = new AzureLogAnalyticsWorkspaceResource(name, configureInfrastructure);
        return builder.AddResource(resource);
    }
}