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/**
 * Copyright (C) 2010-2018 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite 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 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite 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 Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see .
 */
package org.evosuite.assertion;

import org.evosuite.testcase.statements.Statement;
import org.evosuite.testcase.TestCase;
import org.evosuite.testcase.variable.VariableReference;
import org.evosuite.testcase.execution.CodeUnderTestException;
import org.evosuite.testcase.execution.Scope;
import org.evosuite.utils.NumberFormatter;
public class InspectorAssertion extends Assertion {

	private static final long serialVersionUID = -4080051661226820222L;

	// VariableReference value;
	protected Inspector inspector;

	public InspectorAssertion() {
				
	}
	
	public InspectorAssertion(Inspector inspector, Statement statement, VariableReference source, Object value) {
		this.inspector = inspector;
		this.source = source;
		this.statement = statement;
		this.value = value;
	}
	
	/**
	 * Getter for the field inspector.
	 *
	 * @return a {@link org.evosuite.assertion.Inspector} object.
	 */
	public Inspector getInspector() {
		return inspector;
	}

	/** {@inheritDoc} */
	@Override
	public Assertion copy(TestCase newTestCase, int offset) {
		InspectorAssertion s = new InspectorAssertion();
		s.source = newTestCase.getStatement(source.getStPosition() + offset).getReturnValue();
		s.inspector = inspector;
		s.value = value;
		s.comment = comment;
		s.killedMutants.addAll(killedMutants);
		return s;

	}

	/** {@inheritDoc} */
	@Override
	public String getCode() {
		if (value == null) {
			return "assertNull(" + source.getName() + "." + inspector.getMethodCall()
			        + "());";
		} else if (value.getClass().equals(Long.class)) {
			return "assertEquals(" + NumberFormatter.getNumberString(value) + ", "
			        + source.getName() + "." + inspector.getMethodCall() + "());";
		} else if (value.getClass().equals(Float.class)) {
			return "assertEquals(" + NumberFormatter.getNumberString(value) + ", "
			        + source.getName() + "." + inspector.getMethodCall() + "(), 0.01F);";
		} else if (value.getClass().equals(Double.class)) {
			return "assertEquals(" + NumberFormatter.getNumberString(value) + ", "
			        + source.getName() + "." + inspector.getMethodCall() + "(), 0.01D);";
		} else if (value.getClass().equals(Character.class)) {
			return "assertEquals(" + NumberFormatter.getNumberString(value) + ", "
			        + source.getName() + "." + inspector.getMethodCall() + "());";
		} else if (value.getClass().equals(String.class)) {
			return "assertEquals(" + NumberFormatter.getNumberString(value) + ", "
			        + source.getName() + "." + inspector.getMethodCall() + "());";
		} else if (value.getClass().isEnum()) {
			return "assertEquals(" + NumberFormatter.getNumberString(value) + ", "
			        + source.getName() + "." + inspector.getMethodCall() + "());";

		} else
			return "assertEquals(" + value + ", " + source.getName() + "."
			        + inspector.getMethodCall() + "());";
	}

	/** {@inheritDoc} */
	@Override
	public boolean evaluate(Scope scope) {
		try {
			if (source.getObject(scope) == null)
				return true; // TODO - true or false?
			else {
				try {
					Object val = inspector.getValue(source.getObject(scope));
					if (val == null)
						return value == null;
					else
						return val.equals(value);
				} catch (Exception e) {
					logger.error("* Exception during call to inspector",e);
					return true;
				}
			}
		} catch (CodeUnderTestException e) {
			throw new UnsupportedOperationException();
		}
	}

	/** {@inheritDoc} */
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = super.hashCode();
		result = prime * result + ((inspector == null) ? 0 : inspector.hashCode());
		return result;
	}

	/** {@inheritDoc} */
	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (!super.equals(obj))
			return false;
		if (getClass() != obj.getClass())
			return false;
		InspectorAssertion other = (InspectorAssertion) obj;
		if (inspector == null) {
			if (other.inspector != null)
				return false;
		} else if (!inspector.equals(other.inspector))
			return false;

		return true;
	}

	/* (non-Javadoc)
	 * @see org.evosuite.assertion.Assertion#isValid()
	 */
	/** {@inheritDoc} */
	@Override
	public boolean isValid() {
		return source != null;
	}
	
	@Override
	public void changeClassLoader(ClassLoader loader) {
		super.changeClassLoader(loader);
		inspector.changeClassLoader(loader);
	}
}