DigitalData.Auth/DigitalData.Auth.Client/ClientParams.cs

using DigitalData.Auth.Client;
using Microsoft.AspNetCore.SignalR.Client;
using Microsoft.Extensions.Logging;

namespace DigitalData.Auth.Client;

public class ClientParams
{
    public string Url { get; set; } = string.Empty;

    private readonly Lazy<IRetryPolicy?> _lazyRetryPolicy;

    /// <summary>
    /// Controls when the client attempts to reconnect and how many times it does so.
    /// </summary>
    public IRetryPolicy? RetryPolicy => _lazyRetryPolicy.Value;

    /// <summary>
    /// To simplify the assignment of <seealso cref="RetryPolicy"/>
    /// </summary>
    public Func<RetryContext, TimeSpan?>? NextRetryDelay { get; set; }

    /// <summary>
    /// To be able to serilize the simple <seealso cref="RetryPolicy"/>
    /// </summary>
    public TimeSpan? RetryDelay { get; set; }

    public event ClientEvent OnMessageReceived = delegate { };

    internal void TriggerOnMessageReceived(AuthClient client, string issuer, string audience, string key, ILogger? logger = null)
        => OnMessageReceived(client, issuer, audience, key, logger);

    public ClientParams()
    {
        _lazyRetryPolicy = new(() =>
        {
            if (RetryDelay is not null)
                return new RetryPolicy(ctx => RetryDelay);
            else if(NextRetryDelay is not null)
                return new RetryPolicy(NextRetryDelay);
            return null;
        });
    }

    public IEnumerable<AsymmetricPublicKey> PublicKeys { get; init; } = new List<AsymmetricPublicKey>();
}