using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using Common;
using Common.Utils;
using CommonDomain;
using Microsoft.AspNetCore.SignalR;
using Microsoft.Extensions.Logging;
using RedisService;
using StackExchange.Redis;

namespace CommonService
{
    public class HubSend<T> : IHubSend<T> where T : Hub
    {
        private readonly ILogger<HubSend<T>> _logger;
        private readonly IHubContext<T> _pushHub;
        private readonly IRedisService _cache;

        public HubSend(ILogger<HubSend<T>> logger, IHubContext<T> pushHub, IRedisService cache)
        {
            _logger = logger;
            _pushHub = pushHub;
            _cache = cache;
        }

        public void SendUserUserId(string userId, string methon, object obj)
        {
            var userRedis = _cache.GetRedisUserCId(userId);
            if (userRedis != null)
            {
                SendUserCId(userRedis.CId, methon, obj);
            }
        }

        public void SendUserUserIds(List<string> userIds, string methon, object obj)
        {
            foreach (var item in userIds)
            {
                var userRedis = _cache.GetRedisUserCId(item);
                if (userRedis != null)
                {
                    SendUserCId(userRedis.CId, methon, obj);
                }
            }
        }

        public void SendUserCId(string cid, string methon, object obj)
        {
            ObserveSend(_pushHub.Clients.Client(cid).SendAsync(methon, obj), methon);
        }

        public Task SendUserCIdAsync(string cid, string method, object obj)
        {
            return _pushHub.Clients.Client(cid).SendAsync(method, obj);
        }

        public void SendUserCIds(List<string> cids, string methon, object obj)
        {
            ObserveSend(_pushHub.Clients.Clients(cids).SendAsync(methon, obj), methon);
        }

        public void SendGroup(string groupId, string method, object obj)
        {
            ObserveSend(_pushHub.Clients.Group(groupId).SendAsync(method, obj), method);
        }

        public Task SendGroupAsync(string groupId, string method, object obj)
        {
            return _pushHub.Clients.Group(groupId).SendAsync(method, obj);
        }

        public void RemoveGroup(string cid, string groupId)
        {
            _pushHub.Groups.RemoveFromGroupAsync(cid, groupId).GetAwaiter().GetResult();
        }

        public void GroupExcept(string cid, string groupId, string method, object obj)
        {
            ObserveSend(_pushHub.Clients.GroupExcept(groupId, cid).SendAsync(method, obj), method);
        }

        public Task GroupExceptAsync(string cid, string groupId, string method, object obj)
        {
            return _pushHub.Clients.GroupExcept(groupId, cid).SendAsync(method, obj);
        }

        public void AddGroup(string cid, string groupId)
        {
            _pushHub.Groups.AddToGroupAsync(cid, groupId).GetAwaiter().GetResult();
        }

        public void SendAll(string method, object obj)
        {
            ObserveSend(_pushHub.Clients.All.SendAsync(method, obj), method);
        }

        private void ObserveSend(Task sendTask, string method)
        {
            if (sendTask.IsCompletedSuccessfully)
                return;

            _ = sendTask.ContinueWith(
                task => _logger.LogWarning(task.Exception, "SignalR 消息发送失败: {Method}", method),
                CancellationToken.None,
                TaskContinuationOptions.OnlyOnFaulted | TaskContinuationOptions.ExecuteSynchronously,
                TaskScheduler.Default);
        }
    }
}