using System.Net.Http;
using System.Security.Cryptography.X509Certificates;
using Grpc.Net.Client;
using Microsoft.Extensions.Options;
using ScrapperAPI.AgentGrpc;

namespace VoyagerAgent;

public sealed class GrpcAgentClient
{
    private readonly AgentClientOptions _opts;

    public GrpcAgentClient(IOptions<AgentClientOptions> options)
    {
        _opts = options.Value;
    }

    public AgentService.AgentServiceClient CreateClient()
    {
        var handler = new HttpClientHandler();

        if (!string.IsNullOrWhiteSpace(_opts.ClientCertificatePath))
        {
            var cert = new X509Certificate2(_opts.ClientCertificatePath, _opts.ClientCertificatePassword);
            handler.ClientCertificates.Add(cert);
        }

        if (_opts.InsecureSkipServerCertificateValidation)
        {
            handler.ServerCertificateCustomValidationCallback = HttpClientHandler.DangerousAcceptAnyServerCertificateValidator;
        }

        var httpClient = new HttpClient(handler);
        var channel = GrpcChannel.ForAddress(_opts.CentralGrpcAddress, new GrpcChannelOptions { HttpClient = httpClient });
        return new AgentService.AgentServiceClient(channel);
    }
}