// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
namespace Microsoft.AspNetCore.Mvc.Filters;
 
/// <summary>
/// A filter that surrounds execution of action results successfully returned from an action.
/// </summary>
/// <remarks>
/// <para>
/// <see cref="IResultFilter"/> and <see cref="IAsyncResultFilter"/> implementations are executed around the action
/// result only when the action method (or action filters) complete successfully.
/// </para>
/// <para>
/// <see cref="IResultFilter"/> and <see cref="IAsyncResultFilter"/> instances are not executed in cases where
/// an authorization filter or resource filter short-circuits the request to prevent execution of the action.
/// <see cref="IResultFilter"/>. <see cref="IResultFilter"/> and <see cref="IAsyncResultFilter"/> implementations
/// are also not executed in cases where an exception filter handles an exception by producing an action result.
/// </para>
/// <para>
/// To create a result filter that surrounds the execution of all action results, implement
/// either the <see cref="IAlwaysRunResultFilter"/> or the <see cref="IAsyncAlwaysRunResultFilter"/> interface.
/// </para>
/// </remarks>
public interface IResultFilter : IFilterMetadata
{
    /// <summary>
    /// Called before the action result executes.
    /// </summary>
    /// <param name="context">The <see cref="ResultExecutingContext"/>.</param>
    void OnResultExecuting(ResultExecutingContext context);
 
    /// <summary>
    /// Called after the action result executes.
    /// </summary>
    /// <param name="context">The <see cref="ResultExecutedContext"/>.</param>
    void OnResultExecuted(ResultExecutedContext context);
}