using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using QMFrameWork.Data;

namespace Common.Config
{
    public static class ConfigSetting
    {
        private static Dictionary<string, string> SettingList = null;

        /// <summary>
        /// 初始化配置信息
        /// </summary>
        public static void InitSettings()
        {
            Data.SqlLite.SqlLiteHelper dal = new Data.SqlLite.SqlLiteHelper();
            string sql = "SELECT * FROM T_QM_HISCONFIG";
            DataTable dt = null;
            try
            {                
                using (IDataSession session = DataFactory.CreateSession())
                {
                    dt = session.GetTable(sql,new List<DataParameter>().ToArray());
                }

                SettingList = new Dictionary<string, string>();
                foreach (DataRow row in dt.Rows)
                {
                    SettingList.Add(row["KEYCODE"].ToString(), row["CONFIGVALUE"].ToString());
                }

            }
            catch (Exception ex)
            {
                throw new Exceptions.CannotInitConfigException();
            }
        }

        /// <summary>
        /// 修改配置信息
        /// </summary>
        /// <param name="key">配置项</param>
        /// <param name="value">值</param>
        public static void SetSetting(string key, string value)
        {
            Data.SqlLite.SqlLiteHelper dal = new Data.SqlLite.SqlLiteHelper();
            try
            {
                using (System.Data.IDbConnection conn = dal.OpenConnection(GetConnectionString()))
                {
                    dal.ExecuteSql(conn, "UPDATE T_CONFIG SET CONFIGVALUE='" + value + "' WHERE KEYCODE='" + key + "'");
                }
                SettingList[key] = value;
            }
            catch (Exception ex)
            {
                throw new Exceptions.ExcuteFailsException();
            }
        }

        /// <summary>
        /// 获取配置值
        /// </summary>
        /// <param name="key">配置项</param>
        /// <returns></returns>
        public static string GetSetting(string key)
        {
            return SettingList[key];
        }

        /// <summary>
        /// 获取数据库连接字符串
        /// </summary>
        /// <param name="index">数据库编号</param>
        /// <returns></returns>
        public static string GetDBConnString(int index)
        {
            return IO.Security.DES.Decrypt(GetSetting("Z" + index.ToString().PadLeft(3, '0')));
        }

        /// <summary>
        /// 获取配置数据库连接字符串
        /// </summary>
        /// <returns></returns>
        public static string GetConnectionString()
        { 
            return string.Format(@"Data Source={0}\bds.dsf;",
                System.Windows.Forms.Application.StartupPath);
        }
    }
}