/*
 * Licensed under the Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
 * See https://github.com/openiddict/openiddict-core for more information concerning
 * the license and the contributors participating to this project.
 */

namespace OpenIddict.Client;

/// <summary>
/// Represents a handler able to process <typeparamref name="TContext"/> events.
/// </summary>
/// <typeparam name="TContext">The type of the events handled by this instance.</typeparam>
public sealed class OpenIddictClientHandler<TContext> : IOpenIddictClientHandler<TContext> where TContext : BaseContext
{
    private readonly Func<TContext, ValueTask> _handler;

    /// <summary>
    /// Creates a new event using the specified handler delegate.
    /// </summary>
    /// <param name="handler">The event handler delegate.</param>
    public OpenIddictClientHandler(Func<TContext, ValueTask> handler)
        => _handler = handler ?? throw new ArgumentNullException(nameof(handler));

    /// <summary>
    /// Processes the event.
    /// </summary>
    /// <param name="context">The event to process.</param>
    /// <returns>
    /// A <see cref="ValueTask"/> that can be used to monitor the asynchronous operation.
    /// </returns>
    public ValueTask HandleAsync(TContext context)
        => _handler(context ?? throw new ArgumentNullException(nameof(context)));
}