using dotnet_etcd;
using Etcdserverpb;
using Google.Protobuf;
using HealthMonitor.Model.Config;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace HealthMonitor.Service.Etcd
{
    public class EtcdService
    {
        private readonly ServiceConfig _configService;
        private readonly ILogger<EtcdService> _logger;
        private readonly EtcdClient _etcdClient;
        public EtcdService(IOptions<ServiceConfig> _optConfigService, ILogger<EtcdService> logger)
        {
            _configService = _optConfigService.Value;
            _logger = logger;
            _etcdClient = new EtcdClient(_configService.EtcdServerAddress);
        }

        public async Task<string> GetValAsync(string key)
        {
            return await _etcdClient.GetValAsync(key);
        }

        public async Task<RangeResponse> GetResponseAsync(string key)
        {
            return await _etcdClient.GetAsync(key);
        }

        public async Task<RangeResponse> GetValWithPrefixAsync(string keyWithPREFIX)
        {
            return await _etcdClient.GetRangeAsync(keyWithPREFIX);
        }

        //

        public async Task PutValAsync(string key, string value, long? ttl = null, bool? keepalived = false)
        {
            try
            {
                PutRequest request = new()
                {
                    Key = ByteString.CopyFromUtf8(key),
                    Value = ByteString.CopyFromUtf8(value),
                };

                if (ttl != null)
                {
                    long leaseId = _etcdClient.LeaseGrant(new LeaseGrantRequest { TTL = (long)ttl }).ID;
                    request = new PutRequest
                    {
                        Key = ByteString.CopyFromUtf8(key),
                        Value = ByteString.CopyFromUtf8(value),
                        Lease = leaseId
                    };

                    if ((bool)keepalived!)
                    {
                        //await _etcdClient.PutAsync(request);

                        _ = _etcdClient.LeaseKeepAlive(leaseId, CancellationToken.None);
                        //await _etcdClient.LeaseKeepAlive(leaseId, CancellationToken.None);
                        request = new PutRequest
                        {
                            Key = ByteString.CopyFromUtf8(key),
                            Value = ByteString.CopyFromUtf8(value),
                            Lease = leaseId
                        };
                        //await _etcdClient.PutAsync(request);
                        //return;
                    }
                }

                await _etcdClient.PutAsync(request);
            }
            catch (Exception ex)
            {
                _logger.LogInformation($"{nameof(EtcdService)} --- {nameof(PutValAsync)} 出错\n{ex.Message}\n{ex.StackTrace}");
            }

            // await _etcdClient.PutAsync(key, value,null);
        }

        public async Task PutValAsync(string key, string value, DateTime deadline)
        {
            PutRequest request = new()
            {
                Key = ByteString.CopyFromUtf8(key),
                Value = ByteString.CopyFromUtf8(value),
            };
            await _etcdClient.PutAsync(request, null, deadline);
            // await _etcdClient.PutAsync(key, value,null);
        }
        public async Task DeleteKeyValAsync(string key)
        {

            await _etcdClient.DeleteAsync(key);
        }

        public async Task DeleteKeyValWithPrefixAsync(string keyWithPREFIX)
        {

            await _etcdClient.DeleteRangeAsync(keyWithPREFIX);
        }

        public async Task WacthKeysWithPrefixAsync(string keyWithPREFIX, Action<WatchEvent[]> action)
        {
            await _etcdClient.WatchRangeAsync(keyWithPREFIX, action);

        }

        public async Task WacthKeysWithPrefixResponseAsync(string keyWithPREFIX, Action<WatchResponse> action)
        {
            await _etcdClient.WatchRangeAsync(keyWithPREFIX, action);

        }

    }
}