/**
 *                                                                            
 *  Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany) 
 *                                                                            
 *  All rights reserved. This program and the accompanying materials           
 *  are made available under the terms of the Eclipse Public License 2.0        
 *  which accompanies this distribution, and is available at                  
 *  https://www.eclipse.org/legal/epl-2.0/                                 
 *                                 
 *  SPDX-License-Identifier: EPL-2.0                                 
 *                                                                            
 *  Contributors:                                                      
 * 	   Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
 * 
 * 
 *  This copyright notice shows up in the generated Java code
 *
 */
 
package org.eclipse.osbp.xtext.chart.validation

import org.eclipse.osbp.xtext.chart.Chart
import org.eclipse.osbp.xtext.chart.ChartPackage
import org.eclipse.osbp.xtext.chart.ChartDSLPackage
import org.eclipse.emf.common.util.EList
import org.eclipse.xtext.validation.Check
import org.eclipse.osbp.xtext.chart.ChartAxis

//import org.eclipse.xtext.validation.Check

/**
 * Custom validation rules. 
 *
 * see http://www.eclipse.org/Xtext/documentation.html#validation
 */
class ChartDSLValidator extends AbstractChartDSLValidator {

//  public static val INVALID_NAME = 'invalidName'
//
//	@Check
//	def checkGreetingStartsWithCapital(Greeting greeting) {
//		if (!Character.isUpperCase(greeting.name.charAt(0))) {
//			warning('Name should start with a capital', 
//					MyDslPackage.Literals.GREETING__NAME,
//					INVALID_NAME)
//		}
//	}

	@Check
	def void checkAxis(ChartAxis chartAxis){ 
		var axis = chartAxis.axis
		var axisName = axis.name
		if (axis.eContainer===null && axisName.literal==="default"){
			error("Datamart has no attribute definitions anymore. This axis is not available.", ChartDSLPackage.Literals.CHART_AXIS__AXIS)
		}
	}
	
	@Check
	def void checkDuplicateChartNames(Chart chart){ 
		var eObj = chart.eContainer()
		while (!(eObj instanceof ChartPackage)) {
			eObj = eObj.eContainer
		}
		if (eObj!==null){
			var chartPackage = eObj as ChartPackage;
			if (findDuplicateChartNames(chartPackage.charts, chart.getName()) !== null){
				error("Duplicate chart name '".concat(chart.getName()).concat("'!"), ChartDSLPackage.Literals.CHART_BASE__NAME)
			}
		}
	}
		
	def private Chart findDuplicateChartNames(
			EList<Chart> charts, String chartName) {
		var tempSet = <String>newHashSet()
		for (Chart chart : charts){
		   if (!tempSet.add(chart.name) && (chart.name.equals(chartName))){
			   return chart
		   }
		}
		return null
	}

}