using System;
using System.Data;
using DSWeb.Models;
using DSWeb.EntityDA;


namespace DSWeb.Log
{
    public class Logger
    {
        public readonly static Logger Instance = new Logger();
        private LogTypes _log_type;
        
        public Logger()
        {
        }

        
        public void WriteLog(LogEntity tempLogEntity)
        {
            LogDA logDA = new LogDA();
            LogEntity logEntity = tempLogEntity;

            int iResult = logDA.InsertLog(tempLogEntity);
        }
        //#region 获取详细日志SQL操作 
        ///// <summary>
        ///// 获取详细日志SQL操作
        ///// INSERT-"INSERT INTO {0} ({1}) VALUES ({2})"    @{0}-所要插入记录的表;{1}-记录新值@
        ///// DELETE-"将 {0} 记录  删除" @{0}-记录所删记录名称@
        ///// </summary>
        ///// <param name="logType"></param>
        ///// <returns></returns>
        //public string GetLogTemplate(LogTypes logType)
        //{
        //    _log_type = logType;
        //    string strSql = "";
        //    switch (_log_type)
        //    {
        //        case LogTypes.INSERT:
        //            //strSql = " INSERT INTO {0} ({1}) VALUES ({2})";
        //            strSql = " LOGCONTENT = '{}'"
        //            break;
        //        case LogTypes.DELETE:
        //            strSql = " DELETE FROM {0} WHERE 0 > 1 OR {2} ";
        //            break;
        //        default:
        //            strSql = " ";
        //            break;
        //    }

        //    return strSql;
        //}
        //#endregion

        #region 获取日志详细操作记录内容模板
        /// <summary>
        /// 获取日志详细操作记录内容模板
        /// UPDATE-"将 {0} 值 {1} 更改为 {2}" @{0}-记录所更新页面字段名称;{1}-记录原值;{2}-记录更新值@
        /// INSERT-"增加 {0} 值 {1} " @{0}-记录所插入页面字段名称;{1}-记录新值@
        /// DELETE-"将 {0} 记录  删除" @{0}-记录所删记录名称@
        /// </summary>
        /// <param name="logType"></param>
        /// <returns></returns>
        public string GetLogContentTemplate(LogTypes logType)
        {
            _log_type = logType;
            string strSql = "";
            switch (_log_type)
            {
                case LogTypes.UPDATE:
                    strSql = " 将 {0} 值 {1} 更改为 {2} ";
                    break;
                case LogTypes.INSERT:
                    strSql = " 增加 {0} 值 {1} ";
                    break;
                case LogTypes.DELETE:
                    strSql = " 将 {0} 记录 {1} 删除 ";
                    break;
                case LogTypes.CANCEL:
                    strSql = " 将 {0} 记录 {1} 撤销 ";
                    break;
                default:
                    strSql = " ";
                    break;
            }

            return strSql;
        }
        #endregion

        /// <summary>
        /// 日志类型(读写属性)
        /// </summary>
        public LogTypes LogType
        {
            get { return _log_type; }
            set { _log_type = value; }
        }

        /// <summary>
        /// 日志类型
        /// </summary>
        public enum LogTypes
        {
            UPDATE = 0,//更新操作
            INSERT = 1,//插入操作
            DELETE = 2,//删除操作
            CANCEL = 3//撤销操作
        }

        /// <summary>
        /// 日志消息类型
        /// </summary>
        public enum LogMessageTypes
        {
            Info,       // 通知消息
            Warning,    // 警告消息
            Excepiton,  // 异常消息
            Error,      // 非致命错误消息
            Fatal,      // 致命错误消息
        }
    }
}