using System;
using System.Collections.Generic;
using System.Text;

namespace Estsh.Client.Common.FileUtil
{
    /// <summary>
    /// 文件列表封装类
    /// </summary>
    [Serializable]
    public class FileInfos
    {
        /// <summary>
        /// 文件信息列表
        /// </summary>
        public List<FileInfo> Infos;

        // private long _totalBytes;

        /// <summary>
        /// 构造方法
        /// </summary>
        public FileInfos()
        {
            Infos = new List<FileInfo>();
        }

        public long TotalBytes
        {
            get
            {
                long totals = 0;

                foreach (FileInfo fi in Infos)
                {
                    totals += fi.Size;
                }

                return totals;
            }
        }
    }

    /// <summary>
    /// 自定义文件信息类
    /// </summary>
    [Serializable]
    public class FileInfo : IComparable<FileInfo>
    {
        /// <summary>
        /// 文件名称
        /// </summary>
        private string _name;
        /// <summary>
        /// 文件大小
        /// </summary>
        private long _size;
        /// <summary>
        /// 最后更新时间
        /// </summary>
        private DateTime _lastWriteTime;
        /// <summary>
        /// 文件版本
        /// </summary>
        private string _version;

        /// <summary>
        /// 文件名称
        /// </summary>
        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }
        /// <summary>
        /// 文件大小
        /// </summary>
        public long Size
        {
            get { return _size; }
            set { _size = value; }
        }
        /// <summary>
        /// 最后更新时间
        /// </summary>
        public DateTime LastWriteTime
        {
            get { return _lastWriteTime; }
            set { _lastWriteTime = value; }
        }
        /// <summary>
        /// 文件版本
        /// </summary>
        public string Version
        {
            get { return _version; }
            set { _version = value; }
        }

        #region IComparable<FileInfo> Θ

        /// <summary>
        /// 文件比对
        /// </summary>
        /// <param name="other"></param>
        /// <returns></returns>
        public int CompareTo(FileInfo other)
        {
            if (null == Version || null == other.Version)
            {
                return LastWriteTime.CompareTo(other.LastWriteTime);
            }
            else if (Version.IndexOf('.') < 0 || other.Version.IndexOf('.') < 0)
            {
                return LastWriteTime.CompareTo(other.LastWriteTime);
            }
            else
            {
                //return Version.CompareTo(other.Version);
                string[] vers = Version.Split('.');
                string[] vers_other = other.Version.Split('.');
                
                int iVer = 0, iVer_other = 0;
                
                for (int index=0; index < vers.Length; index++)
                {
                	iVer = Convert.ToInt32(vers[index]);
                	iVer_other = Convert.ToInt32(vers_other[index]);
                	
                	if (iVer != iVer_other)
                		return iVer.CompareTo(iVer_other);
                }
                
                return iVer.CompareTo(iVer_other);
            }
        }

        #endregion
    }
}