// 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 System.Threading;
using System.Threading.Tasks;
using Newtonsoft.Json.Linq;
 
namespace Microsoft.VisualStudio.LanguageServer.ContainedLanguage.MessageInterception;
 
public abstract class InterceptorManager
{
    /// <summary>
    /// Returns whether there is an interceptor available for the given message name.
    /// </summary>
    public abstract bool HasInterceptor(string messageName, string contentType);
 
    /// <summary>
    /// Takes a message token and returns it with any transforms applied.  To block the message completely, return null.
    /// </summary>
    /// <param name="methodName">The LSP method being intercepted</param>
    /// <param name="message">The LSP message payload</param>
    /// <param name="contentType">The content type name of the contained language where the message originated</param>
    /// <param name="cancellationToken">Cancellation token</param>
    /// <returns>The message token with any applicable modifications, or null to block the message.</returns>
    [Obsolete("Please move to GenericInterceptionMiddleLayer and generic interceptors.")]
    public abstract Task<JToken?> ProcessInterceptorsAsync(string methodName, JToken message, string contentType, CancellationToken cancellationToken);
 
    public virtual Task<TJsonToken?> ProcessGenericInterceptorsAsync<TJsonToken>(string methodName, TJsonToken message, string contentType, CancellationToken cancellationToken)
    {
        throw new NotImplementedException("When providing a custom InterceptorManager and calling ProcessGenericInterceptorsAsync, you must also provide the implementation.");
    }
}