/*******************************************************************************
 * Copyright (c) 2000, 2012 IBM Corporation and others.
 *
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.debug.tests.core;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.Path;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.debug.testplugin.JavaProjectHelper;
import org.eclipse.jdt.debug.tests.AbstractDebugTest;
import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
import org.eclipse.jdt.launching.IRuntimeClasspathEntry;
import org.eclipse.jdt.launching.JavaLaunchDelegate;
import org.eclipse.jdt.launching.JavaRuntime;

/**
 * Tests bootpath settings
 */
public class BootpathTests extends AbstractDebugTest {

	String mainClass;
	boolean isJava9Compatible;

	public BootpathTests(String name) {
		super(name);
		this.isJava9Compatible = JavaProjectHelper.isJava9Compatible();
		this.mainClass = this.isJava9Compatible ? "LogicalStructures" : "Breakpoints";
	}

	@Override
	protected IJavaProject getProjectContext() {
		return this.isJava9Compatible ? get9Project() : super.getProjectContext();
	}

	public void testDefaultBootpath() throws Exception {
		ILaunchConfiguration config = getLaunchConfiguration(this.mainClass);

		JavaLaunchDelegate delegate = new JavaLaunchDelegate();
		String[] path = delegate.getBootpath(config);
		assertNull("Default bootpath should be null", path);
		String[][] pathInfo= delegate.getBootpathExt(config);
		assertNotNull("Bootpath info shouldn't be null", pathInfo);
		assertEquals("Wrong bootpath info array size",3, pathInfo.length);
		assertNull("Prepend bootpath should be null", pathInfo[0]);
		assertNull("Main bootpath should be null", pathInfo[1]);
		assertNull("Append bootpath should be null", pathInfo[2]);
	}

	public void testEmptyBootpath() throws Exception {
		ILaunchConfiguration config = getLaunchConfiguration(this.mainClass);
		ILaunchConfigurationWorkingCopy wc = config.getWorkingCopy();

		wc.setAttribute(IJavaLaunchConfigurationConstants.ATTR_DEFAULT_CLASSPATH, false);

		JavaLaunchDelegate delegate = new JavaLaunchDelegate();
		String[] path = delegate.getBootpath(wc);
		if (this.isJava9Compatible) {
			// strange difference between versions
			assertNull("Empty bootpath should be null", path);
		} else {
			assertNotNull("Empty bootpath should be empty array", path);
			assertEquals("bootpath should be empty", 0, path.length);
		}
		String[][] pathInfo= delegate.getBootpathExt(config);
		assertNotNull("Bootpath info should'nt be null", pathInfo);
		assertEquals("Wrong bootpath info array size",3, pathInfo.length);
		assertNull("Prepend bootpath should be null", pathInfo[0]);
		assertNull("Main bootpath should be empty array", pathInfo[1]);
		assertNull("Append bootpath should be null", pathInfo[2]);
	}

	public void testPrependBootpath() throws Exception {
		ILaunchConfiguration config = getLaunchConfiguration(this.mainClass);
		ILaunchConfigurationWorkingCopy wc = config.getWorkingCopy();
		IRuntimeClasspathEntry[] classpath = JavaRuntime.computeUnresolvedRuntimeClasspath(wc);
		IRuntimeClasspathEntry[] newpath = new IRuntimeClasspathEntry[classpath.length + 1];
		IResource jar = get14Project().getProject().getFile(new Path("src/A.jar"));
		IRuntimeClasspathEntry pre = JavaRuntime.newArchiveRuntimeClasspathEntry(jar);
		pre.setClasspathProperty(IRuntimeClasspathEntry.BOOTSTRAP_CLASSES);
		newpath[0] = pre;
		System.arraycopy(classpath, 0, newpath, 1, classpath.length);
		List<String> mementos = new ArrayList<>(newpath.length);
		for (int i = 0; i < newpath.length; i++) {
			IRuntimeClasspathEntry entry = newpath[i];
			mementos.add(entry.getMemento());
		}

		wc.setAttribute(IJavaLaunchConfigurationConstants.ATTR_DEFAULT_CLASSPATH, false);
		wc.setAttribute(IJavaLaunchConfigurationConstants.ATTR_CLASSPATH, mementos);

		JavaLaunchDelegate delegate = new JavaLaunchDelegate();
		Map<String, Object> map = delegate.getVMSpecificAttributesMap(wc);
		assertNotNull("Missing VM specific attributes map", map);
		String[] prepath = (String[]) map.get(IJavaLaunchConfigurationConstants.ATTR_BOOTPATH_PREPEND);
		assertNotNull("Missing bootpath prepend", prepath);
		assertEquals("Incorrect number of prepends", 1, prepath.length);
		assertEquals("wrong prepended path", jar.getLocation().toOSString(), prepath[0]);
	}

	public void testAppendBootpathJava() throws Exception {
		IJavaProject project = getProjectContext();

		IResource jar = get14Project().getProject().getFile(new Path("src/A.jar"));

		List<String> mementos = new ArrayList<>(3);
		mementos.add(JavaRuntime.newDefaultProjectClasspathEntry(project).getMemento());
		if (this.isJava9Compatible) {
			mementos.add(JavaRuntime.computeModularJREEntry(project).getMemento());
		} else {
			mementos.add(JavaRuntime.computeJREEntry(project).getMemento());
		}
		IRuntimeClasspathEntry jarEntry = JavaRuntime.newArchiveRuntimeClasspathEntry(jar.getFullPath());
		jarEntry.setClasspathProperty(IRuntimeClasspathEntry.BOOTSTRAP_CLASSES);
		mementos.add(jarEntry.getMemento());

		ILaunchConfiguration config = getLaunchConfiguration(project, this.mainClass);
		ILaunchConfigurationWorkingCopy wc = config.getWorkingCopy();
		wc.setAttribute(IJavaLaunchConfigurationConstants.ATTR_DEFAULT_CLASSPATH, false);
		wc.setAttribute(IJavaLaunchConfigurationConstants.ATTR_CLASSPATH, mementos);

		JavaLaunchDelegate delegate = new JavaLaunchDelegate();
		Map<String, Object> map = delegate.getVMSpecificAttributesMap(wc);
		assertNotNull("Missing VM specific attributes map", map);
		String[] postpath = (String[]) map.get(IJavaLaunchConfigurationConstants.ATTR_BOOTPATH_APPEND);
		assertNotNull("Missing bootpath append", postpath);
		assertEquals("Incorrect number of appends", 1, postpath.length);
		assertEquals("wrong appended path", jar.getLocation().toOSString(), postpath[0]);
	}

}