using System;
using System.Reflection;
using NewLife.Reflection;
using XCode;

namespace NewLife.CommonEntity
{
    /// <summary>系统设置。提供系统名称、版本等基本设置。</summary>
    /// <remarks>
    /// 由<see cref="Setting"/>支撑，也可自己扩展<see cref="Setting"/>，然后修改这里的<see cref="Sys"/>。
    /// </remarks>
    public static class SysSetting
    {
        #region 属性
        private static ISetting _Sys;
        /// <summary>系统设置</summary>
        public static ISetting Sys
        {
            get
            {
                if (_Sys != null) return _Sys;
                lock (typeof(SysSetting))
                {
                    if (_Sys != null) return _Sys;

                    return _Sys = Setting.Root.Ensure<String>("Sys", "", "系统设置").Create("Sys");
                }
            }
            set { _Sys = value; }
        }

        /// <summary>获取设置</summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="name"></param>
        /// <returns></returns>
        public static T Get<T>(String name)
        {
            return Sys.Create(name).Get<T>();
        }

        /// <summary>设置设定项</summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="name"></param>
        /// <param name="val"></param>
        public static void Set<T>(String name, T val)
        {
            Sys.Create(name).Set<T>(val);
        }
        #endregion

        #region 静态构造
        static SysSetting()
        {
            var asmx = AssemblyX.Entry;
            var eop = EntityFactory.CreateOperate(Sys.GetType());
            eop.BeginTransaction();
            try
            {
                Sys
                    .Ensure<String>("Name", asmx != null ? asmx.Name : "NewLifePlatform", "系统名称")
                    .Ensure<String>("Version", asmx != null ? asmx.Version : "0.1", "系统版本")
                    .Ensure<String>("DisplayName", asmx != null ? (asmx.Title ?? asmx.Name) : "新生命管理平台", "显示名称")
                    .Ensure<String>("Company", asmx != null ? asmx.Company : "新生命开发团队", "公司")
                    .Ensure<String>("Address", "新生命开发团队", "地址")
                    .Ensure<String>("Tel", null, "电话")
                    .Ensure<String>("Fax", null, "传真")
                    .Ensure<String>("EMail", null, "电子邮件");

                if (String.IsNullOrEmpty(Sys.DisplayName))
                {
                    Sys.DisplayName = "系统设置";
                    Sys.Save();
                }

                eop.Commit();
            }
            catch
            {
                eop.Rollback();
                throw;
            }
        }
        #endregion

        #region 业务属性
        /// <summary>系统名称</summary>
        public static String Name { get { return Get<String>("Name"); } set { Set<String>("Name", value); } }

        /// <summary>系统版本</summary>
        public static String Version { get { return Get<String>("Version"); } set { Set<String>("Version", value); } }

        /// <summary>显示名称</summary>
        public static String DisplayName { get { return Get<String>("DisplayName"); } set { Set<String>("DisplayName", value); } }

        /// <summary>公司</summary>
        public static String Company { get { return Get<String>("Company"); } set { Set<String>("Company", value); } }

        /// <summary>地址</summary>
        public static String Address { get { return Get<String>("Address"); } set { Set<String>("Address", value); } }

        /// <summary>电话</summary>
        public static String Tel { get { return Get<String>("Tel"); } set { Set<String>("Tel", value); } }

        /// <summary>传真</summary>
        public static String Fax { get { return Get<String>("Fax"); } set { Set<String>("Fax", value); } }

        /// <summary>电子邮件</summary>
        public static String EMail { get { return Get<String>("EMail"); } set { Set<String>("EMail", value); } }
        #endregion

        #region 方法
        #endregion
    }
}