var formChecker = null;
function swfUploadLoaded() {
  var btnSubmit = document.getElementById("btn_submit");
  
  btnSubmit.onclick = doSubmit;
  btnSubmit.disabled = true;
  
  /*txtLastName.onchange = validateForm;
  txtFirstName.onchange = validateForm;
  txtEducation.onchange = validateForm;
  txtReferences.onchange = validateForm;
  */
  formChecker = window.setInterval(validateForm, 1000);
  
  validateForm();
}

function validateForm() {
  
  var version= jQuery("#wiki_version").val();
  var type= jQuery("#wiki_fileType").val();
  var filename = jQuery("#txtFileName").val();
  
  var isValid = true;
  if (version === "") {
    isValid = false;
  }
  if (type === "") {
    isValid = false;
  }
  if (filename === "") {
    isValid = false;
  }
  
  document.getElementById("btn_submit").disabled = !isValid;
}

// Called by the submit button to start the upload
function doSubmit(e) {
  if (formChecker != null) {
    clearInterval(formChecker);
    formChecker = null;
  }
  
  e = e || window.event;
  if (e.stopPropagation) {
    e.stopPropagation();
  }
  e.cancelBubble = true;
  
  try {
    swfu.startUpload();
  } catch (ex) {

  }
  
  return false;
}

 // Called by the queue complete handler to submit the form
function uploadDone() {
  try {
    document.forms[0].submit();
  } catch (ex) {
    alert("Error submitting form");
  }
}

function fileDialogStart() {
  var txtFileName = document.getElementById("txtFileName");
  txtFileName.value = "";

  this.cancelUpload();
}



function fileQueueError(file, errorCode, message)  {
  try {
    // Handle this error separately because we don't want to create a FileProgress element for it.
    switch (errorCode) {
    case SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED:
      alert("You have attempted to queue too many files.\n" + (message === 0 ? "You have reached the upload limit." : "You may select " + (message > 1 ? "up to " + message + " files." : "one file.")));
      return;
    case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
      alert("The file you selected is too big.");
      this.debug("Error Code: File too big, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
      return;
    case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
      alert("The file you selected is empty.  Please select another file.");
      this.debug("Error Code: Zero byte file, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
      return;
    case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:
      alert("The file you choose is not an allowed file type.");
      this.debug("Error Code: Invalid File Type, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
      return;
    default:
      alert("An error occurred in the upload. Try again later.");
      this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
      return;
    }
  } catch (e) {
  }
}

function fileQueued(file) {
  try {
    var txtFileName = document.getElementById("txtFileName");
    txtFileName.value = file.name;
  } catch (e) {
  }

}
function fileDialogComplete(numFilesSelected, numFilesQueued) {
  validateForm();
}

function uploadProgress(file, bytesLoaded, bytesTotal) {

  try {
    var percent = Math.ceil((bytesLoaded / bytesTotal) * 100);

    file.id = "singlefile";  // This makes it so FileProgress only makes a single UI element, instead of one for each file
    var progress = new FileProgress(file, this.customSettings.progress_target);
    progress.setProgress(percent);
    progress.setStatus("Uploading...");
  } catch (e) {
  }
}

function uploadSuccess(file, serverData) {
  try {
    file.id = "singlefile";  // This makes it so FileProgress only makes a single UI element, instead of one for each file
    var progress = new FileProgress(file, this.customSettings.progress_target);
    progress.setComplete();
    progress.setStatus("Complete.");
    progress.toggleCancel(false);
    
    if (serverData === " ") {
      this.customSettings.upload_successful = false;
    } else {
      this.customSettings.upload_successful = true;
      document.getElementById("hidFileID").value = serverData;
    }
    
  } catch (e) {
  }
}

function uploadComplete(file) {
  try {
    if (this.customSettings.upload_successful) {
      this.setButtonDisabled(true);
      uploadDone();
    } else {
      file.id = "singlefile";  // This makes it so FileProgress only makes a single UI element, instead of one for each file
      var progress = new FileProgress(file, this.customSettings.progress_target);
      progress.setError();
      progress.setStatus("File rejected");
      progress.toggleCancel(false);
      
      var txtFileName = document.getElementById("txtFileName");
      txtFileName.value = "";
      validateForm();

      alert("There was a problem with the upload.\nThe server did not accept it.");
    }
  } catch (e) {
  }
}

function uploadError(file, errorCode, message) {
  try {
    
    if (errorCode === SWFUpload.UPLOAD_ERROR.FILE_CANCELLED) {
      // Don't show cancelled error boxes
      return;
    }
    
    var txtFileName = document.getElementById("txtFileName");
    txtFileName.value = "";
    validateForm();
    
    // Handle this error separately because we don't want to create a FileProgress element for it.
    switch (errorCode) {
    case SWFUpload.UPLOAD_ERROR.MISSING_UPLOAD_URL:
      alert("There was a configuration error.  You will not be able to upload a resume at this time.");
      this.debug("Error Code: No backend file, File name: " + file.name + ", Message: " + message);
      return;
    case SWFUpload.UPLOAD_ERROR.UPLOAD_LIMIT_EXCEEDED:
      alert("You may only upload 1 file.");
      this.debug("Error Code: Upload Limit Exceeded, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
      return;
    case SWFUpload.UPLOAD_ERROR.FILE_CANCELLED:
    case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:
      break;
    default:
      alert("An error occurred in the upload. Try again later.");
      this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
      return;
    }

    file.id = "singlefile";  // This makes it so FileProgress only makes a single UI element, instead of one for each file
    var progress = new FileProgress(file, this.customSettings.progress_target);
    progress.setError();
    progress.toggleCancel(false);

    switch (errorCode) {
    case SWFUpload.UPLOAD_ERROR.HTTP_ERROR:
      progress.setStatus("Upload Error");
      this.debug("Error Code: HTTP Error, File name: " + file.name + ", Message: " + message);
      break;
    case SWFUpload.UPLOAD_ERROR.UPLOAD_FAILED:
      progress.setStatus("Upload Failed.");
      this.debug("Error Code: Upload Failed, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
      break;
    case SWFUpload.UPLOAD_ERROR.IO_ERROR:
      progress.setStatus("Server (IO) Error");
      this.debug("Error Code: IO Error, File name: " + file.name + ", Message: " + message);
      break;
    case SWFUpload.UPLOAD_ERROR.SECURITY_ERROR:
      progress.setStatus("Security Error");
      this.debug("Error Code: Security Error, File name: " + file.name + ", Message: " + message);
      break;
    case SWFUpload.UPLOAD_ERROR.FILE_CANCELLED:
      progress.setStatus("Upload Cancelled");
      this.debug("Error Code: Upload Cancelled, File name: " + file.name + ", Message: " + message);
      break;
    case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:
      progress.setStatus("Upload Stopped");
      this.debug("Error Code: Upload Stopped, File name: " + file.name + ", Message: " + message);
      break;
    }
  } catch (ex) {
  }
}