/*******************************************************************************
 * Copyright (c) 2012-2013 University of Stuttgart.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and the Apache License 2.0 which both accompany this distribution,
 * and are available at http://www.eclipse.org/legal/epl-v10.html
 * and http://www.apache.org/licenses/LICENSE-2.0
 *
 * Contributors:
 *    Oliver Kopp - initial API and implementation and/or initial documentation
 *******************************************************************************/

 // also loaded from the repository

// TODO: winery-common should be required -> encodeID; typing could be required (but that is no AMD module)
define([], function() {
	$("#artifactTemplateName").typing({
		start: function(event, $elem) {
			flagArtifactTemplateNameAsUpdating();
		},
		stop: function(event, $elem) {
			checkArtifactTemplateName();
		}
	});

	$("#artifactTemplateNS").on("blur", checkArtifactTemplateName).on("change", checkArtifactTemplateName).on("focus", flagArtifactTemplateNameAsUpdating);

	var repositoryURL;

	return {
		setRepositoryURL: function(url) {
			repositoryURL = url;
		},
		checkArtifactTemplateName: checkArtifactTemplateName,
		flagArtifactTemplateNameAsUpdating: flagArtifactTemplateNameAsUpdating
	};

	function checkArtifactTemplateName() {
		var ns = $("#artifactTemplateNS").val();
		var name = $("#artifactTemplateName").val();
		var url = repositoryURL + "/artifacttemplates/" + encodeID(ns) + "/" + encodeID(name) + "/";
		if (name == "") {
			var valid = false;
			var invalidReason = "No name provided";
			setValidityStatus(valid, invalidReason);
		} else {
			$.ajax(url, {
				type: 'HEAD',
				dataType: 'html',
				error: function(jqXHR, textStatus, errorThrown) {
					if (jqXHR.status == 404) {
						// artifact template does not exist: everything is allright
						setValidityStatus(true, null);
					} else {
						setValidityStatus(false, textStatus);
					}
				},
				success: function(data, textStatus, jqXHR) {
					setValidityStatus(false, "artifact template already exists");
				}
			});
		}
	}

	function flagArtifactTemplateNameAsUpdating() {
		$("#artifactTemplateNameIsValid").removeClass("invalid").removeClass("valid").addClass("unknown");
		$("#artifactTemplateNameIsInvalidReason").text("");
	}

	function setValidityStatus(valid, invalidReason) {
		$("#artifactTemplateNameIsValid").removeClass("unknown");
		if (valid) {
			$("#artifactTemplateNameIsValid").addClass("valid");
			$("#artifactTemplateNameIsInvalidReason").text("Ok");
		} else {
			$("#artifactTemplateNameIsValid").addClass("invalid");
			$("#artifactTemplateNameIsInvalidReason").text(invalidReason);
		}
	}


});