using SteamWare;
using System;
using System.IO;

namespace NKC_WF.WebUserContols
{
  public class FileUploadEventArgs : EventArgs
  {
    /// <summary>
    /// Evento con argomenti soppevato post fileUpload
    /// </summary>
    /// <param name="localPath"></param>
    /// <param name="fileName"></param>
    /// <param name="batchName"></param>
    public FileUploadEventArgs(string localPath, string fileName, string batchName)
    {
      _localPath = localPath;
      _fileName = fileName;
      _batchName = batchName;
    }
    private string _localPath;
    private string _fileName;
    private string _batchName;

    public string LocalPath
    {
      get { return _localPath; }
      set { _localPath = value; }
    }
    public string FileName
    {
      get { return _fileName; }
      set { _fileName = value; }
    }
    public string BatchName
    {
      get { return _batchName; }
      set { _batchName = value; }
    }
  }


  public partial class cmp_fileUpload : BaseUserControl
  {
    /// <summary>
    /// Evento upload e salvataggio su server IIS del file...
    /// </summary>
    public event EventHandler<FileUploadEventArgs> eh_FileUploaded;
    /// <summary>
    /// Solelva evento salvataggio file con messaggio path/nome
    /// </summary>
    /// <param name="localPath"></param>
    /// <param name="fileName"></param>
    public void reportFileUploaded(FileUploadEventArgs e)
    {
      EventHandler<FileUploadEventArgs> handler = eh_FileUploaded;
      if (handler != null)
      {
        handler(this, e);
      }
    }

    /// <summary>
    /// Folder di upload temporaneo files
    /// </summary>
    protected string _tempUploadDir = memLayer.ML.CRS("_tempUploadDir");
    /// <summary>
    /// Folder REMOTA x copia verso SQL
    /// </summary>
    protected string _SqlCopyDir = memLayer.ML.CRS("_SqlCopyDir");
    /// <summary>
    /// Folder x SQL import
    /// </summary>
    protected string _SqlImportDir = memLayer.ML.CRS("_SqlImportDir");


    /// <summary>
    /// permesso scrittura SE E' abilitato a aprtire dalla tab diritti...
    /// </summary>
    public bool userIsAuth
    {
      get
      {
        return true;
        //return (idxAmm + idxFornitore > 0);
      }
    }
    public bool isWriteEnabled
    {
      get
      {
        bool answ = false;
        bool.TryParse(hfWriteEnabled.Value, out answ);
        return answ;
      }
      set
      {
        hfWriteEnabled.Value = value.ToString();
      }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
      if (!IsPostBack)
      {
        fisVisFU(false);
        deleteOldFiles();
      }
      divNewEdit.Visible = userIsAuth && isWriteEnabled;
    }
    /// <summary>
    ///  Procedee a bonificare la cartella di upload dei files + vecchi di 3 mesi
    /// </summary>
    private void deleteOldFiles()
    {
      string dirPath = Server.MapPath(_tempUploadDir);
      // elenco files nella directory
      string[] files = Directory.GetFiles(dirPath);
      // li guardo tutti e se vecchi li elimino...
      foreach (string file in files)
      {
        FileInfo fi = new FileInfo(file);
        if (fi.LastAccessTime < DateTime.Now.AddMonths(-3))
          fi.Delete();
      }
    }

    protected void Upload(object sender, EventArgs e)
    {
      string csvFileName = "";
      string uploadedFilename = "";
      string batchName = "";
      string savedFilename = "";
      string contentType = "";
      DateTime adesso = DateTime.Now;
      string dirFrom = Server.MapPath(_tempUploadDir);
      string dirTo = $"{_SqlCopyDir}{adesso.ToString("yyyy-MM")}\\";
      string dirImport = $"{_SqlImportDir}{adesso.ToString("yyyy-MM")}\\";
      // se c'è un file
      if (FileUpload1.PostedFile != null)
      {
        uploadedFilename = Path.GetFileName(FileUpload1.PostedFile.FileName.Replace(" ", "_"));
        csvFileName = $"{adesso.ToString("dd-HHmmss")}_{uploadedFilename}";
        batchName = uploadedFilename.Replace(".csv", "");
        savedFilename = Server.MapPath($"{_tempUploadDir}{csvFileName}");
        contentType = FileUpload1.PostedFile.ContentType;
        // accedo allo stream del file allegato
        using (Stream fs = FileUpload1.PostedFile.InputStream)
        {
          // scrivo su file
          FileStream file = new FileStream(savedFilename, FileMode.Create, FileAccess.Write);
          fs.CopyTo(file);
          file.Close();
        }

        reportFileUploaded(new FileUploadEventArgs(dirFrom, csvFileName, batchName));

#if false
        try
        {
          // copio su SQL...
          fileMover.obj.copiaFile(dirFrom, dirTo, csvFileName);
          // chiamo procedura SQL x import... 
          DataLayer.man.taImpLog.importCsvOrd($"{dirImport}", csvFileName, batchName, ";", "\n", "2", 0, 0, 0);
          raiseEvent();
        }
        catch (Exception exc)
        {
          logger.lg.scriviLog($"Eccezione in Upload file:{Environment.NewLine}{exc}");
        } 
#endif
      }
      Response.Redirect(Request.RawUrl);
    }



    protected void btnAdd_Click(object sender, EventArgs e)
    {
      fisVisFU(true);
      btnUpload.Text = "Carica Nuovo";
    }
    /// <summary>
    /// fix visibilità controllo file upload
    /// </summary>
    /// <param name="showAdd">mostra controlli add=true oppure nasconde = false</param>
    private void fisVisFU(bool showAdd)
    {
      divFileUpl.Visible = showAdd;
      btnAdd.Visible = !showAdd;
      btnCancel.Visible = showAdd;
    }

    protected void btnCancel_Click(object sender, EventArgs e)
    {
      fisVisFU(false);
    }

  }
}