using Microsoft.Extensions.Options;
using Nacos.V2;
using Ocelot.Provider.Nacos.NacosClient.V2;
using Ocelot.ServiceDiscovery.Providers;
using Ocelot.Values;
using NacosConstants = Nacos.V2.Common.Constants;

namespace Ocelot.Provider.Nacos;

public class Nacos : IServiceDiscoveryProvider
{
    private readonly INacosNamingService _client;
    private readonly string _serviceName;
    private readonly string _groupName;
    private readonly List<string> _clusters;

    public Nacos(string serviceName, INacosNamingService client, IOptions<NacosAspNetOptions> options)
    {
        _serviceName = serviceName;
        _client = client;
        _groupName = string.IsNullOrWhiteSpace(options.Value.GroupName) ? 
            NacosConstants.DEFAULT_GROUP : options.Value.GroupName;
        _clusters = (string.IsNullOrWhiteSpace(options.Value.ClusterName) ? NacosConstants.DEFAULT_CLUSTER_NAME : options.Value.ClusterName).Split(",").ToList();
    }

    public async Task<List<Service>> Get()
    {
        var services = new List<Service>();

        var instances = await _client.GetAllInstances(_serviceName, _groupName, _clusters);

        if (instances != null && instances.Any())
        {
            foreach (var Sitem in instances)
            {
                string sip = Sitem.Ip;
                int sport = Sitem.Port;
                if (Sitem.Metadata.ContainsKey("endpoint"))
                {
                    string[] ipport = Sitem.Metadata["endpoint"].Split(':');
                    sip = ipport[0];
                    sport =int.Parse( ipport[1]);
                }
                services.Add(new Service(Sitem.InstanceId, new ServiceHostAndPort(sip, sport), "", "", new List<string>()));
            }
           // services.AddRange(instances.Select(i => new Service(i.InstanceId, new ServiceHostAndPort(i.Ip, i.Port), "", "", new List<string>())));
        }

        return await Task.FromResult(services);
    }

    public Task<List<Service>> GetAsync()
    {
        throw new NotImplementedException();
    }
}