/*
 * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
 *
 * SPDX-License-Identifier: EPL-2.0
 */
package tools.refinery.store.query.tests;

import org.hamcrest.Description;
import org.hamcrest.TypeSafeMatcher;
import tools.refinery.store.query.dnf.Dnf;
import tools.refinery.store.query.equality.DeepDnfEqualityChecker;

public class StructurallyEqualTo extends TypeSafeMatcher<Dnf> {
	private final Dnf expected;

	public StructurallyEqualTo(Dnf expected) {
		this.expected = expected;
	}

	@Override
	protected boolean matchesSafely(Dnf item) {
		var checker = new DeepDnfEqualityChecker();
		return checker.dnfEqual(expected, item);
	}

	@Override
	protected void describeMismatchSafely(Dnf item, Description mismatchDescription) {
		var describingChecker = new MismatchDescribingDnfEqualityChecker(mismatchDescription);
		if (describingChecker.dnfEqual(expected, item)) {
			throw new IllegalStateException("Mismatched Dnf was matching on repeated comparison");
		}
		if (describingChecker.needsDescription()) {
			super.describeMismatchSafely(item, mismatchDescription);
		}
	}

	@Override
	public void describeTo(Description description) {
		description.appendText("structurally equal to ").appendText(expected.toDefinitionString());
	}
}