using Learun.Cache.Redis;
using Learun.Util;
using Learun.Util.SqlSugar;
using SqlSugar;
using System;
using System.Linq;
using System.Reflection;
using System.Windows.Documents;

namespace Learun.Application.TwoDevelopment.ZZDT_EC
{
    public class ProjectSugar //不能是泛型类
    {

        private static string redisKey = "_ec_project";//不需要后缀
        /// <summary>
        /// 按项目取表名
        /// </summary>
        /// <typeparam name="T">实体类Entity</typeparam>
        /// <param name="projectIdOrIndex">项目ID或Index</param>
        /// <returns></returns>
        public static string TableName<T>(string projectIdOrIndex) where T : class, new()
        {
            //按项目取表名公用方法
            string tableName = SqlSugarHelper.Db.EntityMaintenance.GetTableName<T>();
            if (int.TryParse(projectIdOrIndex, out int ProjIndex))
            {
                tableName += "_" + projectIdOrIndex;//免得再去查一下数据库,直接给index的情况下
            }
            else if (!projectIdOrIndex.IsEmpty())
            { 
                //var project = SqlSugarHelper.Db.Queryable<ec_projectEntity>().First(x => x.ProjectId == projectIdOrIndex);
                var list = new CacheByRedis().GetRedisOrDBData(redisKey,"", () => SqlSugarHelper.Db.Queryable<ec_projectEntity>().ToList());
                if (list != null)
                {
                    var project = list.FirstOrDefault(x=>x.ProjectId == projectIdOrIndex);
                    if (project != null)
                    {
                        tableName += "_" + project.ProjectIndex.Value;
                    }
                    else
                    {
                        throw ExceptionEx.ThrowServiceException(new System.Exception(), "无效的ProjectId");
                    }
                }
               
            }
            return tableName;//空就返回原表名
        }

        public static Type FindEntityTypeByTableName(string tableName)
        {
            // 假设所有实体类都在这个命名空间或者程序集
            var allTypes = Assembly.GetExecutingAssembly().GetTypes();

            foreach (var type in allTypes)
            {
                if (!type.IsClass) continue;

                var attr = type.GetCustomAttribute<SugarTable>();
                if (attr != null && string.Equals(attr.TableName, tableName, StringComparison.OrdinalIgnoreCase))
                {
                    return type;
                }

                // 或者类名就等于表名（如果没加特性）
                if (attr == null && string.Equals(type.Name, tableName, StringComparison.OrdinalIgnoreCase))
                {
                    return type;
                }
            }

            return null; // 没找到
        }
    }
}