using SqlSugar;
using SqlSugar.IOC;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

using VideoAnalysisCore.Model;

namespace VideoAnalysisCore.Common
{
    public class Repository<T> : SimpleClient<T> where T : class, new()
    {
        readonly Dictionary<Type, object?> CID = new Dictionary<Type, object?>();
        public Repository()
        {
            SwitchConnection();
        }
        public void SwitchConnection()
        {
            var t = typeof(T);
            if (CID.ContainsKey(t))
            {
                base.Context = CID[t] != null
                    ? DbScoped.Sugar.GetConnectionScope(CID[t])
                    : DbScoped.Sugar;
                return;
            }
            else
            {
                var c = t.GetCustomAttribute<TenantAttribute>();
                if (!CID.ContainsKey(t))
                    CID.Add(t, c?.configId);
                base.Context = c != null
                    ? DbScoped.Sugar.GetConnectionScope(c.configId)
                     : DbScoped.Sugar;
                //这个变量也要保证是线程安全的，尽量CopyNew在方法中使用
                base.Context = base.Context.CopyNew();
            }
        }
    }
}