using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.IO;

namespace Ant.Service.Common
{
    /// <summary>
    /// 文件上传
    /// </summary>
    public class FileUpload
    {
        /// <summary>
        /// 单个文件上传(只获取第一个文件,返回的文件名是文件的md5值),返回为json数据格式,成功返回{status:"success",website:"a.jpg"},失败,返回{status:"error",website:"error"}
        /// </summary>
        /// <param name="context">上下文</param>
        /// <param name="FilePath">文件路径</param>
        /// <param name="outFileName">返回文件的md5</param>
        /// <returns>返回json状态信息</returns>
        public static string FileUploadSingle(HttpContext context, string FilePath, out string outFileName)
        {
            string json = "";
            //找到目标文件对象
            HttpFileCollection hfc = context.Request.Files;
            HttpPostedFile hpf = hfc[0];

            if (hpf.ContentLength > 0)
            {
                //根据文件的md5的hash值做文件名,防止文件的重复和图片的浪费
                //string FileName = CreateFileForFileNameByMd5(hpf.FileName); //CreateDateTimeForFileName(hpf.FileName);//自动生成文件名
                string FileName = hpf.FileName;
                string file = System.IO.Path.Combine(FilePath,FileName);
                if (!Directory.Exists(Path.GetDirectoryName(file)))
                {
                    Directory.CreateDirectory(file);
                }
                hpf.SaveAs(file);
                json = "{status:\"success\",website:\"" + FileName + "\"}";
                outFileName = FileName;
            }
            else
            {
                json = "{status:\"error\",website:\"error\"}";
                outFileName = FilePath;
            }

            return json;

        }
        /// <summary>
        /// 单个文件上传(只获取第一个文件,返回的文件名是文件的md5值),返回为json数据格式,成功返回{status:"success",website:"a.jpg"},失败,返回{status:"error",website:"error"}
        /// </summary>
        /// <param name="context">上下文</param>
        /// <param name="FilePath">文件路径</param>
        /// <param name="outFileName">返回文件的md5</param>
        /// <returns>返回json状态信息</returns>
        public static string FileUploadMulti(HttpContext context, string FilePath, out string[] outFileName)
        {

            string json = "";
            //找到目标文件对象
            HttpFileCollection hfc = context.Request.Files;
            outFileName = new string[hfc.Count];
            for (int i = 0; i < hfc.Count; i++)
            {
                if (hfc[i].ContentLength > 0)
                {
                    //根据文件的md5的hash值做文件名,防止文件的重复和图片的浪费
                    string FileName = CreateFileForFileNameByMd5(hfc[i].FileName); //CreateDateTimeForFileName(hpf.FileName);//自动生成文件名

                    string file = System.IO.Path.Combine(FilePath,
                     FileName);
                    if (!Directory.Exists(Path.GetDirectoryName(file)))
                    {
                        Directory.CreateDirectory(file);
                    }
                    hfc[i].SaveAs(file);
                    outFileName[i] = FileName;
                }

            }
            //如果文件非空,就返回json数据
            if (outFileName.Count() > 0)
                json = "{status:\"success\",website:\"" + string.Join(",", outFileName) + "\"}";
            else
                json = "{status:\"error\",website:\"error\"}";


            return json;

        }
        /// <summary>
        /// 根据文件的md5值当作文件的文件名(
        /// </summary>
        /// <param name="FileName">文件名</param>
        /// <returns>文件的md5值</returns>
        public static string CreateFileForFileNameByMd5(string FileName)
        {
            return Common.MD5Provider.Hash(FileName+ DateTime.Now.ToString()) +Path.GetExtension(FileName);
        }
        /// <summary>
        /// 根据当前时间生成文件名
        /// </summary>
        /// <returns></returns>
        public static string CreateDateTimeForFileName(string FileName)
        {
            string datetime = DateTime.Now.ToString("yyyyMMddhhmmssffff");
            string FilePath = datetime + Path.GetExtension(FileName);
            return FilePath;
        }

        #region Mvc用上传文件
        public static void FileUploadSingle(HttpPostedFileBase file, string savePath, out string newName)
        {         
            newName = string.Empty;
            if (file.ContentLength > 0)
            {
                //根据文件的md5的hash值做文件名,防止文件的重复和图片的浪费
                string FileName = CreateFileForFileNameByMd5(file.FileName);
                //CreateDateTimeForFileName(hpf.FileName);//自动生成文件名
                //string FileName = Common.Enums.ClsDic.DicPhone["安卓程序"];
                string _newPath = System.IO.Path.Combine(savePath, FileName);
                if (!Directory.Exists(Path.GetDirectoryName(_newPath)))
                {
                    Directory.CreateDirectory(_newPath);
                }
                file.SaveAs(_newPath);
                newName = FileName;
            }
            else
            {
                newName = savePath;
            }
        }

        public static void FileUploadSingle(HttpPostedFileBase file, string savePath, out string newName,int type)
        {
            newName = string.Empty;
            if (file.ContentLength > 0)
            {
                //根据文件的md5的hash值做文件名,防止文件的重复和图片的浪费
                //string FileName = CreateFileForFileNameByMd5(file.FileName); //CreateDateTimeForFileName(hpf.FileName);//自动生成文件名
                string FileName ="";
                if(type==1)
                FileName =  Common.Enums.ClsDic.DicPhone["安卓程序"];
                else
                FileName =  Common.Enums.ClsDic.DicPhone["苹果程序"];
                string _newPath = System.IO.Path.Combine(savePath, FileName);
                if (!Directory.Exists(Path.GetDirectoryName(_newPath)))
                {
                    Directory.CreateDirectory(_newPath);
                }
                file.SaveAs(_newPath);
                newName = FileName;
            }
            else
            {
                newName = savePath;
            }
        }

        #endregion
    }
}