// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.Diagnostics.Latency;
using Microsoft.Extensions.Diagnostics.Latency.Internal;
using Microsoft.Shared.Diagnostics;
 
namespace Microsoft.Extensions.DependencyInjection;
 
/// <summary>
/// Extensions to add latency context.
/// </summary>
public static class LatencyContextExtensions
{
    /// <summary>
    /// Adds latency context.
    /// </summary>
    /// <param name="services">The dependency injection container.</param>
    /// <returns>The value of <paramref name="services" />.</returns>
    public static IServiceCollection AddLatencyContext(this IServiceCollection services)
    {
        _ = Throw.IfNull(services);
        _ = services.AddOptions<LatencyContextOptions>();
        services.TryAddSingleton<LatencyContextRegistrySet>();
        services.TryAddSingleton<LatencyInstrumentProvider>();
        services.TryAddSingleton<ILatencyContextProvider, LatencyContextProvider>();
        services.TryAddSingleton<ILatencyContextTokenIssuer, LatencyContextTokenIssuer>();
        return services;
    }
 
    /// <summary>
    /// Adds latency context.
    /// </summary>
    /// <param name="services">The dependency injection container.</param>
    /// <param name="configure">The <see cref="LatencyContextOptions"/> configuration delegate.</param>
    /// <returns>The value of <paramref name="services" />.</returns>
    public static IServiceCollection AddLatencyContext(this IServiceCollection services, Action<LatencyContextOptions> configure)
    {
        _ = Throw.IfNull(services);
        _ = Throw.IfNull(configure);
 
        _ = services.Configure(configure);
 
        return services.AddLatencyContext();
    }
 
    /// <summary>
    /// Adds latency context.
    /// </summary>
    /// <param name="services">The dependency injection container.</param>
    /// <param name="section">The configuration of <see cref="LatencyContextOptions"/>.</param>
    /// <returns>The value of <paramref name="services" />.</returns>
    public static IServiceCollection AddLatencyContext(this IServiceCollection services, IConfigurationSection section)
    {
        _ = Throw.IfNull(services);
        _ = Throw.IfNull(section);
 
        _ = services.Configure<LatencyContextOptions>(section);
 
        return services.AddLatencyContext();
    }
}