/*-
 * ============LICENSE_START=======================================================
 * org.openecomp.aai
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
 * ============LICENSE_END=========================================================
 */

package org.openecomp.aai.introspection.generator;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import org.openecomp.aai.exceptions.AAIException;
import org.openecomp.aai.introspection.Introspector;
import org.openecomp.aai.introspection.IntrospectorWalker;
import org.openecomp.aai.introspection.Loader;
import org.openecomp.aai.introspection.PropertyPredicates;
import org.openecomp.aai.introspection.Wanderer;

public class CreateExample implements Wanderer {

	private Random rand = new Random();
	private final long range = 100000000L;
	private Loader loader = null;
	private Introspector result = null;
	private String objectName = null;
	private List<String> blacklist = null;
	
	/**
	 * Instantiates a new creates the example.
	 *
	 * @param loader the loader
	 * @param objectName the object name
	 */
	public CreateExample(Loader loader, String objectName) {

		this.loader = loader;
		this.objectName = objectName;
		this.blacklist = new ArrayList<>();
		
	}

	/**
	 * Gets the example object.
	 *
	 * @return the example object
	 * @throws AAIException 
	 */
	public Introspector getExampleObject() throws AAIException {
		result = loader.introspectorFromName(objectName);
		blacklist = new ArrayList<>();
		blacklist.add("any");
		blacklist.add("relationship-list");
		if (!result.isContainer()) {
			blacklist.add("resource-version");
		}
		IntrospectorWalker walker = new IntrospectorWalker(this, PropertyPredicates.includeInExamples());
		
		walker.preventCycles(true);
		walker.setBlacklist(blacklist);
		walker.walk(result);
		//this.getExampleObject(result);
		
		return result;
	}
	
	/**
	 * Gets the value.
	 *
	 * @param property the property
	 * @param type the type
	 * @param suffix the suffix
	 * @return the value
	 */
	private Object getValue(String property, String type, String suffix) {
		long randLong = (long)(rand.nextDouble()*range);
		Integer randInt = rand.nextInt(100000);
		Integer randShrt = rand.nextInt(20000);
		short randShort = randShrt.shortValue();
	
		Object newObj = null;
		if (type.contains("java.lang.String")) {
			newObj = "example-" + property + "-val-" + randInt + suffix;
		} else if ( type.toLowerCase().equals("long") ||type.contains("java.lang.Long")) {
			newObj = randLong;
		} else if(type.toLowerCase().equals("boolean") || type.contains("java.lang.Boolean")){
			newObj = Boolean.TRUE;
		} else if ( type.toLowerCase().equals("int") || type.contains("java.lang.Integer")){
			newObj = randInt;
		}  else if ( type.toLowerCase().equals("short") || type.contains("java.lang.Short")){
			newObj = randShort;
		}
		
		return newObj;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void processPrimitive(String propName, Introspector obj) {
		String 	propType = obj.getType(propName);

		Object val = this.getValue(propName, propType, "");
		obj.setValue(propName, val);		
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void processPrimitiveList(String propName, Introspector obj) {
		int listSize = 2;
		String propType = "";
		List<Object> list = new ArrayList<>();
		for (int i = 0; i < listSize; i++) {
			propType = obj.getGenericType(propName);
			Object val = this.getValue(propName, propType, "-" + (i + 1));
			list.add(val);
		}
		obj.setValue(propName, list);		
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void processComplexObj(Introspector obj) {

	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void modifyComplexList(List<Introspector> list, List<Object> listReference, Introspector parent, Introspector child) {
		// TODO Auto-generated method stub
		
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public boolean createComplexObjIfNull() {
		return true;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public int createComplexListSize(Introspector parent, Introspector child) {
		return 1;
	}
}