var formChecker = null;

function cancelQueue(instance) {
	document.getElementById(instance.customSettings.cancelButtonId).disabled = true;
	instance.stopUpload();
	var stats;

	do {
		stats = instance.getStats();
		instance.cancelUpload();
	} while (stats.files_queued !== 0);

}

function swfUploadLoaded() {
	var btnSubmit = document.getElementById("btnSubmit");

	btnSubmit.onclick = doSubmit;
	btnSubmit.disabled = true;

	/*
      upload_date.onchange = validateForm;
      upload_name.onchange = validateForm;
	*/

	formChecker = window.setInterval(validateForm, 1000);

	validateForm();
}

function validateForm() {
  
	var upload_date = document.getElementById("input_upload_date");
	var upload_name = document.getElementById("input_upload_name");
	

	var isValid = true;
	if (upload_date.value === "") {
		isValid = false;
	}
	if (upload_name.value === "") {
		isValid = false;
	}

    if(upload.getStats().files_queued === 0){
      isValid = false;
    }

	document.getElementById("btnSubmit").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 {
        upload.addPostParam('upload_date', document.getElementById("input_upload_date").value);
        upload.addPostParam('upload_name', document.getElementById("input_upload_name").value);
		upload.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("Ошибка отправки формы");
	}
}

function fileDialogStart() {
	
}

function fileQueueError(file, errorCode, message)  {
	try {
		switch (errorCode) {
		case SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED:
			alert("Вы пытаетесь добавить слишком много файлов в очередь.\n" + (message === 0 ? "Установлен лимит на закачку." : "Вы можете выбрать " + (message > 1 ? "до " + message + " файлов." : "один файл.")));
			return;
		case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
			alert("Выбранный файл слишком большой.");
			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("Файл пустой. Выберите другой файл.");
			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("Неправильное расширение файла.");
			this.debug("Error Code: Invalid File Type, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			return;
		default:
			alert("Произошла ошибка при загрузке. Повторите попытку позже.");
			this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			return;
		}
	} catch (e) {
	}
}

function fileQueued(file) {

	try {
		var progress = new FileProgress(file, this.customSettings.progress_target);
		progress.setStatus("Ожидание...");
		progress.toggleCancel(true, this);
	} catch (ex) {
		this.debug(ex);
	}
}
function fileDialogComplete(numFilesSelected, numFilesQueued) {
	validateForm();
    if (this.getStats().files_queued > 0) {
      document.getElementById(this.customSettings.cancelButtonId).disabled = false;
    }
}

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

		var progress = new FileProgress(file, this.customSettings.progress_target);
		progress.setProgress(percent);
		progress.setStatus("Загрузка...");
	} catch (e) {
	}
}

function uploadSuccess(file, serverData) {
	try {
		var progress = new FileProgress(file, this.customSettings.progress_target);
		progress.setComplete();
		progress.setStatus("Загружено.");
		progress.toggleCancel(false);

	} catch (ex) {
		this.debug(ex);
	}
}

function uploadComplete(file) {

    try {
		if (this.getStats().files_queued === 0) {
          document.getElementById(this.customSettings.cancelButtonId).disabled = true;
          document.getElementById("btnSubmit").disabled = true;

          document.getElementById("input_upload_date").value = "";
          document.getElementById("input_upload_name").value = "";

		} else {
			this.startUpload();
		}
	} catch (ex) {
		this.debug(ex);
	}
}

function uploadError(file, errorCode, message) {
	try {

		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;
		}

		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) {
	}
}