baseURL = 'https://clients.elgg.com/';

/**
 * Show / hide the loader notification
 *
 * @param show
 */
function ajaxLoader(show) {
	var show = (typeof(show) == 'undefined') ? true : false;
	var loader = $('#ajax_loader');

	if (show) {
		// center
		var left = Math.floor(($(document).width() - loader.width()) / 2);
		loader.css('left', left);

		//loader.fadeIn();
		loader.slideDown();
	} else {
		//loader.fadeOut();
		loader.slideUp();
	}
}

function displayMessage(msg, timeout) {
	var timeout = timeout || 5000;
	var container = $('#ajax_messages');

	container.html(msg);

	// center it.
	var left = Math.floor(($(document).width() - container.width()) / 2);
	container.css('left', left);

	container.slideDown();
	setTimeout(function() { $('#ajax_messages').slideUp() }, timeout);
}

/**
 * Load content of url into element
 * @param element Element to load into
 * @param endpoint Ajax endpoint to call
 * @param params Extra params to pass
 * @param show Show element after loaded?
 */
function ajaxPutContent(element, endpoint, params, show) {
	// @todo check for element.
	ajaxLoader();

	var url = baseURL + 'ajax/index.php';
	var show = (typeof(show) == 'undefined') ? true : false;
	var data = {'endpoint': endpoint};

	for (i in params) {
		data[i] = params[i];
	}

	$(element).load(url, data, function(text, status, xhr) {
		ajaxLoader(false);
		// I mistakingly thought PHP returned a 500 error for syntax
		// and other fatal errors.  Guess not....
		if (status != 'success') {
			displayMessage("Network error.  Please try again.");
		} else {
			if (show) {
				$(element).slideDown();
			}
		}
	});
}

function ajaxSubmitForm(form) {
	var options = {
		success: function(txt) {
			if (ajaxIsSuccess(txt))
				displayMessage('Changes saved.');
			else
				displayMessage('Error saving changes.');
		}
	}
	$(form).ajaxSubmit(options);
	return false;
}

function ajaxIsSuccess(msg) {
	if (msg == '1') {
		return true;
	}
	return false;
}