using dodohold.core;
using molilian.core;
using System;
using System.Collections.Concurrent;
using System.Linq;
using YunhuiKit;
using static molilian.core.TkPoolCore;

public partial class TkEndpointCore
{
    private static SemaphoreSlim _semaphore = new SemaphoreSlim(1, 1);

    private static IEnumerable<TkEndpointConfigDTO> _cached;

    // 添加到 TkEndpointCore 类中
    private static readonly ConcurrentDictionary<int, List<TkEndpointConfigDTO>> _accountEndpointCache = new();


    private static async Task<IEnumerable<TkEndpointConfigDTO>> ListAsync(bool force = false)
    {
        // 内存缓存检查
        if (!force && _cached != null) return _cached;
        string cache_key = "cache:tk_endpoint_config";

        if (!force)
        {
            var cachedList = await RedisHelper.GetAsync<IEnumerable<TkEndpointConfigDTO>>(cache_key);
            if (cachedList != null)
            {
                _cached = cachedList;
                return cachedList;
            }
        }
        // 获取新数据
        await _semaphore.WaitAsync();
        try
        {
            // 双重检查，防止并发情况下重复加载
            if (!force)
            {
                var cachedList = await RedisHelper.GetAsync<IEnumerable<TkEndpointConfigDTO>>(cache_key);
                if (cachedList != null)
                {
                    _cached = cachedList;
                    return cachedList;
                }
            }

            // 从数据库加载数据
            var list = new DBContext.Table("tk_endpoint_config")
                .Where("status=@status", new { status = 1 })
                .Select<TkEndpointConfigDTO>();

            if (list == null) return default;

            // 更新调用次数
            //foreach (var item in list)
            //{
            //    item.current_daily_calls = await RiskControlCore.GetAllNodesTkEndpointCallsAsync(item.id, DateTime.Now.ToString("yyyyMMdd"));
            //    item.current_hourly_calls = await RiskControlCore.GetAllNodesTkEndpointCallsAsync(item.id, DateTime.Now.ToString("yyyyMMddHH"));
            //}

            // 更新缓存
            await RedisHelper.SetAsync(cache_key, list, 30 * 86400);
            _cached = list;
            _accountEndpointCache.Clear();
            return list;
        }
        finally
        {
            _semaphore.Release();
        }
    }


    public static async Task<List<TkEndpointConfigDTO>> GetEndpointsByAccountAsync(int accountId)
    {
        // 1. 从缓存读取（直接返回副本）
        if (_accountEndpointCache.TryGetValue(accountId, out var cached))
            return cached.Select(x => x.DeepCopy()).ToList();

        // 2. 获取所有端点（包含全局和专属）
        var allEndpoints = (await ListAsync())?.Where(e => e.status).ToList() ?? [];

        // 3. 合并逻辑：专属配置覆盖全局配置（关键！）
        var mergedEndpoints = allEndpoints
            .GroupBy(e => e.endpoint)
            .Select(g =>
            {
                // 优先取专属配置
                var accountSpecific = g.FirstOrDefault(e => e.tk_pool_id == accountId);
                if (accountSpecific != null)
                    return accountSpecific.DeepCopy(); // 深拷贝专属配置

                // 否则取全局配置（tk_pool_id=0）
                var global = g.FirstOrDefault(e => e.tk_pool_id == 0);
                return global?.DeepCopy(); // 深拷贝全局配置
            })
            .Where(e => e != null)
            .ToList();

        // 4. 存入缓存（存储深拷贝后的组合配置）
        _accountEndpointCache.TryAdd(accountId, mergedEndpoints.Select(x => x.DeepCopy()).ToList());

        return mergedEndpoints;
    }



    // 添加缓存清理方法
    public static void ClearEndpointCache(int accountId)
    {
        _accountEndpointCache.TryRemove(accountId, out _);
    }



    public static void Refresh()
    {
        _ = AllListAsync(true);
        _ = ListAsync(true);
        _accountEndpointCache.Clear();
    }

}