using Cksoft.Data;
using Cksoft.Unity;
using DllEapEntity;
using System;
using System.Collections.Generic;
using System.Linq;
using DllEapEntity.Dtos;
using System.IO;

namespace DllEapDal
{
    public class TFileInfoDal
    {
        private IDatabase CurrDb = null;
        private string commonFilter = null;
        public TFileInfoDal(IDatabase db)
        {
            CurrDb = db;
        }
        public TFileInfoDal(IDatabase db, string userCode)
        {
            CurrDb = db;
            var smDal = new StaffMachineDal(CurrDb);
            string errorinfo = string.Empty;
            var idFilter = smDal.GetFilter(userCode, ref errorinfo);
            commonFilter = idFilter;
        }
        public TFileInfo IUTFileInfo(TFileInfo mst, string usercode, ref string errorinfo)
        {
            try
            {
                int result = 0;
                int id = mst.ID;
                if (mst.EntityStatusID == 1)
                {
                    mst.RecCode = usercode;
                    mst.RecTime = DateTime.Now;
                    mst.ModCode = usercode;
                    mst.ModTime = DateTime.Now;
                    result = CurrDb.InsertFor(mst, usercode);
                    if (result < 0)
                    {
                        return null;
                    }
                    object objid = CurrDb.FindObject("select @@IDENTITY");
                    if (objid.ToString() == "")
                    {
                        return null;
                    }
                    id = int.Parse(objid.ToString());
                }
                else
                {
                    mst.ModCode = usercode;
                    mst.ModTime = DateTime.Now;
                    result = CurrDb.UpdateFor(mst, usercode);
                    if (result < 0)
                    {
                        return null;
                    }
                }
                mst = CurrDb.FindEntityFor<TFileInfo>(id);
                return mst;
            }
            catch (Exception e)
            {
                errorinfo = e.Message;
                return null;
            }

        }
        public TFileInfo AddTFileInfo(byte[] filedatas,string filedir,string filename,int macid,string remark, string usercode, ref string errorinfo)
        {
            try
            {
                string md5 = FileHelper.GetMD5HashFromFile(filedatas, ref errorinfo);
                if (md5 == "")
                    return null;
                string condition = $" and a.Md5Val='{md5}'";
                List<TFileInfo> list = CurrDb.FindListForCondition< TFileInfo>(condition, ref errorinfo).ToList();
                if (list.Count > 0)
                    return list[0];
                //没有此文件，则新增
                TFileInfo entity = new TFileInfo();
                entity.FName = filename;
                entity.FileSize = filedatas.Length;
                entity.Md5Val = md5;
                entity.UploadMacID = macid;
                entity.remark = remark;
                entity = IUTFileInfo(entity, usercode, ref errorinfo);
                if (entity == null)
                    return null;
                string dir = ComputerPath(entity);//文件相对路径
                //考虑到linux系统，这里只保存目录
                entity.FilePath = $"{dir}";
                entity.ModifyEntity();
                entity = IUTFileInfo(entity, usercode, ref errorinfo);
                if (entity == null)
                    return null;
                //添加实体文件
                string tempfiledir = $"{filedir}{Path.DirectorySeparatorChar}{dir}";
                int result = UnityHelper.WriteFile(tempfiledir, entity.ID.ToString(), filedatas, ref errorinfo);
                if (result <= 0)
                    return null;
                return entity;
            }
            catch (Exception e)
            {
                errorinfo = e.Message;
                return null;
            }

        }
        private string ComputerPath(TFileInfo entity)
        {
            int dir = entity.ID / 1000;
            return $"{dir}";
        }
    }
}