/*
    * Cloudformation Plugin for SonarQube
    * Copyright (C) 2019 James Pether Sörling
    * james@hack23.com
    *
    * This program is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Lesser General Public
    * License as published by the Free Software Foundation; either
    * version 3 of the License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with this program; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
   */
  package com.hack23.sonar.cloudformation.reports;
  
  import java.util.List;
  
  import org.junit.Assert;
  import org.junit.Test;
  
  import com.hack23.sonar.cloudformation.reports.cfnnag.CfnNagScanReport;
  import com.hack23.sonar.cloudformation.reports.checkov.CheckovReport;
  import com.openpojo.random.RandomFactory;
  import com.openpojo.reflection.PojoClass;
  import com.openpojo.reflection.PojoClassFilter;
  import com.openpojo.reflection.PojoField;
  import com.openpojo.reflection.filters.FilterPackageInfo;
  import com.openpojo.reflection.impl.PojoClassFactory;
  import com.openpojo.validation.Validator;
  import com.openpojo.validation.ValidatorBuilder;
  import com.openpojo.validation.affirm.Affirm;
  import com.openpojo.validation.rule.impl.EqualsAndHashCodeMatchRule;
  import com.openpojo.validation.rule.impl.GetterMustExistRule;
  import com.openpojo.validation.rule.impl.SetterMustExistRule;
  import com.openpojo.validation.test.Tester;
  import com.openpojo.validation.test.impl.GetterTester;
  import com.openpojo.validation.test.impl.SetterTester;
  
  /**
   * The Class ModelSanityTest.
   */
  public final class ModelSanityTest extends Assert {
  
  	/** The Constant FilterPackageInfo. */
  	private static final FilterPackageInfo FilterPackageInfo = new FilterPackageInfo();
  
  	/** The Constant EXPECT_CLASSES_IN_PACKAGE. */
  	private static final String EXPECT_CLASSES_IN_PACKAGE = "Expect classes in package";
  
  
  	/**
  	 * Check cfn nag report package test.
  	 */
  	@Test
  	public void checkCfnNagReportPackageTest() {
  		assertTrue(EXPECT_CLASSES_IN_PACKAGE,
  				checkAllClassesInPackage(CfnNagScanReport.class.getPackage().getName()));
  
  	}
  
  	/**
  	 * Check checkov report package test.
  	 */
  	@Test
  	public void checkCheckovReportPackageTest() {
  		assertTrue(EXPECT_CLASSES_IN_PACKAGE,
  				checkAllClassesInPackage(CheckovReport.class.getPackage().getName()));
  
  	}
  
  	/**
  	 * Check all classes in package.
  	 *
  	 * @param string the string
  	 * @return true, if successful
  	 */
  	protected boolean checkAllClassesInPackage(final String string) {
  		final List<PojoClass> pojoClassesRecursively = PojoClassFactory.getPojoClassesRecursively(string,
  				new FilterTestClasses());
  
  		final Validator validator = ValidatorBuilder.create().with(new SetterMustExistRule(), new GetterMustExistRule())
  				.with(new SetterTester(), new GetterTester()).with(new InvokeToStringTester())
  				.with(new InvokeHashcodeTester()).with(new DummyEqualsTester()).with(new EqualsAndHashCodeMatchRule()).build();
  		validator.validate(pojoClassesRecursively);
  
  
  		return true;
  	}
  
  	/**
  	 * The Class FilterTestClasses.
  	 */
  	private static class FilterTestClasses implements PojoClassFilter {
 
 		/**
 		 * Include.
 		 *
 		 * @param pojoClass the pojo class
 		 * @return true, if successful
 		 */
 		@Override
 		public boolean include(final PojoClass pojoClass) {
 			return (!pojoClass.getSourcePath().contains("/test-classes/") && !pojoClass.getClazz().getName().contains("_") && !pojoClass.isEnum() && !pojoClass.isAbstract())
 					&& FilterPackageInfo.include(pojoClass);
 		}
 	}
 
 	/**
 	 * The Class InvokeToStringTester.
 	 */
 	private static class InvokeToStringTester implements Tester {
 
 		/**
 		 * Run.
 		 *
 		 * @param pojoClass the pojo class
 		 */
 		@Override
 		public void run(final PojoClass pojoClass) {
 			final Object instance = RandomFactory.getRandomValue(pojoClass.getClazz());
 			Affirm.affirmNotNull("toStringFailure", instance.toString());
 		}
 	}
 
 	/**
 	 * The Class InvokeHashcodeTester.
 	 */
 	private static class InvokeHashcodeTester implements Tester {
 
 		/**
 		 * Run.
 		 *
 		 * @param pojoClass the pojo class
 		 */
 		@Override
 		public void run(final PojoClass pojoClass) {
 			final Object instance = RandomFactory.getRandomValue(pojoClass.getClazz());
 			Affirm.affirmFalse("hashCodeFailure", 0 == instance.hashCode());
 		}
 	}
 
 	/**
 	 * The Class DummyEqualsTester.
 	 */
 	private static class DummyEqualsTester implements Tester {
 
 		/**
 		 * Run.
 		 *
 		 * @param pojoClass the pojo class
 		 */
 		@Override
 		public void run(final PojoClass pojoClass) {
 			final Object instance = randomValues(pojoClass);
 
 			Affirm.affirmFalse("EqualsCompareNullFailure", instance.equals(null));
 			Affirm.affirmFalse("EqualsCompareWrongClassFailure", "WrongClass".equals(instance));
 			Affirm.affirmTrue("EqualsCompareSelfFailure", instance.equals(instance));
 
 			final Object instance2 = randomValues(pojoClass);
 
 			instance.equals(instance2);
 		}
 
 		/**
 		 * Random values.
 		 *
 		 * @param pojoClass the pojo class
 		 * @return the object
 		 */
 		private Object randomValues(final PojoClass pojoClass) {
 			final Object instance = RandomFactory.getRandomValue(pojoClass.getClazz());
 			randomValues(instance, pojoClass);
 
 			return instance;
 		}
 
 		/**
 		 * Random values.
 		 *
 		 * @param instance the instance
 		 * @param pojoClass the pojo class
 		 */
 		private static void randomValues(final Object instance, final PojoClass pojoClass) {
 			if (pojoClass == null) {
 				return;
 			}
 
 			for (final PojoField fieldEntry : pojoClass.getPojoFields()) {
 				if (fieldEntry.hasSetter()) {
 					final Object value;
 
 					value = RandomFactory.getRandomValue(fieldEntry);
 					fieldEntry.invokeSetter(instance, value);
 				}
 			}
 			randomValues(instance, pojoClass.getSuperClass());
 		}
 	}
 
 }