/* **********************
   Event Handlers
   ********************** */
var formChecker = null;
var fileReady = false;

// Called when SWFUpload is loaded
function swfUploadLoaded() {
	var btnSubmit = document.getElementById("btnSubmit");
	
	btnSubmit.onclick = doSubmit;
	btnSubmit.disabled = true;

	formChecker = window.setInterval(validateForm, 1000);
	
	validateForm();
}

function swfUploadPreLoad() {
	// Hide Flash warning
	document.getElementById("divAlternateContent").style.display = "none";
	document.getElementById("custom_msg").style.display = "";
}
   
function swfUploadLoadFailed() {
	// Show Flash warning
	document.getElementById("divAlternateContent").style.display = "block";
}

// Called to validate the form
function validateForm() {
	var txtName = document.getElementById("name");
	var txtEmail = document.getElementById("email");
	var txtRep = document.getElementById("rep");
	
	var isValid = true;
	if (txtName.value === "") {
		isValid = false;
	}
	if (txtEmail.value === "") {
		isValid = false;
	}
	if (txtRep.value === "Please Select") {
		isValid = false;
	}
	if (!fileReady) {
		isValid = false;	
	}
	
	document.getElementById("btnSubmit").disabled = !isValid;
}

// Called when selecting a file
function fileQueued(file) {
	try {
		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setStatus("Pending...");
		progress.toggleCancel(true, this);

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

// Called if there is an error
function fileQueueError(file, errorCode, message) {
	try {
		if (errorCode === 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;
		}

		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setError();
		progress.toggleCancel(false);

		switch (errorCode) {
		case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
			progress.setStatus("File is too big.");
			this.debug("Error Code: File too big, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
			progress.setStatus("Cannot upload Zero Byte files.");
			this.debug("Error Code: Zero byte file, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:
			progress.setStatus("Invalid File Type.");
			this.debug("Error Code: Invalid File Type, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		default:
			if (file !== null) {
				progress.setStatus("Unhandled Error");
			}
			this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		}
	} catch (ex) {
        this.debug(ex);
    }
}

// Called when all files are selected
function fileDialogComplete(numFilesSelected, numFilesQueued) {
	if (this.getStats().files_queued === 0) {
				fileReady = false;
		}
	else
		fileReady = true;
	validateForm();
}


// 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;
	
	var btnSubmit = document.getElementById("btnSubmit");
	btnSubmit.disabled = true;
	
	try {
		swfu.startUpload();
	} catch (ex) {

	}
	return false;
}

// Called when form is submitted
function uploadStart(file) {
	try {
		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setStatus("Uploading...");
		progress.toggleCancel(true, this);
	}
	catch (ex) {}
	
	return true;
}

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

		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setProgress(percent);
		progress.setStatus("Uploading...");
	} catch (ex) {
		this.debug(ex);
	}
}

// Called if there is an error uploading
function uploadError(file, errorCode, message) {
	try {
		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setError();
		progress.toggleCancel(false);

		switch (errorCode) {
		case SWFUpload.UPLOAD_ERROR.HTTP_ERROR:
			progress.setStatus("Upload Error: " + message);
			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.UPLOAD_LIMIT_EXCEEDED:
			progress.setStatus("Upload limit exceeded.");
			this.debug("Error Code: Upload Limit Exceeded, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		case SWFUpload.UPLOAD_ERROR.FILE_VALIDATION_FAILED:
			progress.setStatus("Failed Validation.  Upload skipped.");
			this.debug("Error Code: File Validation Failed, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		case SWFUpload.UPLOAD_ERROR.FILE_CANCELLED:
			// If there aren't any files left
			if (this.getStats().files_queued === 0) {
				fileReady = false;
			}
			progress.setStatus("Cancelled");
			progress.setCancelled();
			break;
		case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:
			progress.setStatus("Stopped");
			break;
		default:
			progress.setStatus("Unhandled Error: " + errorCode);
			this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		}
	} catch (ex) {
        this.debug(ex);
    }
}

// Called when upload is success
function uploadSuccess(file, serverData) {
	try {
		var progress = new FileProgress(file, this.customSettings.progressTarget);
		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 = document.getElementById("hidFileID").value + "," + serverData;
			document.getElementById("hidFileCount").value += 1;
		}

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



function uploadComplete(file) {
	try {
		if (this.customSettings.upload_successful) {
			//
		} 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);
			
			validateForm();

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


// Called by the queue complete handler to submit the form
function queueComplete(numFilesUploaded) {
	document.getElementById("hidFileCount").value = numFilesUploaded;
	if(numFilesUploaded > 0) {
	try {
		document.forms[0].submit();
	} catch (ex) {
		alert("Error submitting form");
	}
	}
}