/*******************************************************************************
 * Copyright (c) 2005, 2013 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ant.internal.ui.launchConfigurations;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.ant.internal.core.IAntCoreConstants;
import org.eclipse.ant.internal.ui.AntUIImages;
import org.eclipse.ant.internal.ui.AntUIPlugin;
import org.eclipse.ant.internal.ui.AntUtil;
import org.eclipse.ant.internal.ui.IAntUIConstants;
import org.eclipse.ant.internal.ui.IAntUIHelpContextIds;
import org.eclipse.ant.launching.IAntLaunchConstants;
import org.eclipse.core.externaltools.internal.IExternalToolConstants;
import org.eclipse.core.externaltools.internal.model.BuilderCoreUtils;
import org.eclipse.core.resources.IncrementalProjectBuilder;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
import org.eclipse.debug.ui.AbstractLaunchConfigurationTab;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.PlatformUI;

public class AntBuilderTargetsTab extends AbstractLaunchConfigurationTab {

	private ILaunchConfiguration fConfiguration;

	private Button fAfterCleanTarget;
	private Button fManualBuildTarget;
	private Button fAutoBuildTarget;
	private Button fDuringCleanTarget;

	private Text fAfterCleanTargetText;
	private Text fManualBuildTargetText;
	private Text fAutoBuildTargetText;
	private Text fDuringCleanTargetText;

	private Map<String, String> fAttributeToTargets = new HashMap<>();

	private static final String NOT_ENABLED = AntLaunchConfigurationMessages.AntBuilderTargetsTab_0;
	private static final String DEFAULT_TARGET_SELECTED = AntLaunchConfigurationMessages.AntBuilderTargetsTab_10;

	private SelectionListener fSelectionListener = new SelectionAdapter() {
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
		 */
		@Override
		public void widgetSelected(SelectionEvent e) {
			String attribute = null;
			Object source = e.getSource();
			Text text = null;
			if (source == fAfterCleanTarget) {
				attribute = IAntLaunchConstants.ATTR_ANT_AFTER_CLEAN_TARGETS;
				text = fAfterCleanTargetText;
			} else if (source == fManualBuildTarget) {
				attribute = IAntLaunchConstants.ATTR_ANT_MANUAL_TARGETS;
				text = fManualBuildTargetText;
			} else if (source == fAutoBuildTarget) {
				attribute = IAntLaunchConstants.ATTR_ANT_AUTO_TARGETS;
				text = fAutoBuildTargetText;
			} else if (source == fDuringCleanTarget) {
				attribute = IAntLaunchConstants.ATTR_ANT_CLEAN_TARGETS;
				text = fDuringCleanTargetText;
			}

			setTargets(attribute, text);
			updateLaunchConfigurationDialog();
		}
	};

	public AntBuilderTargetsTab() {
		super();
	}

	protected void createTargetsComponent(Composite parent) {
		createLabel(AntLaunchConfigurationMessages.AntBuilderTargetsTab_1, parent);
		fAfterCleanTargetText = createText(parent);
		fAfterCleanTarget = createPushButton(parent, AntLaunchConfigurationMessages.AntBuilderTargetsTab_2, null);
		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
		fAfterCleanTarget.setLayoutData(gd);
		fAfterCleanTarget.addSelectionListener(fSelectionListener);

		createLabel(AntLaunchConfigurationMessages.AntBuilderTargetsTab_3, parent);
		fManualBuildTargetText = createText(parent);
		fManualBuildTarget = createPushButton(parent, AntLaunchConfigurationMessages.AntBuilderTargetsTab_4, null);
		gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
		fManualBuildTarget.setLayoutData(gd);
		fManualBuildTarget.addSelectionListener(fSelectionListener);

		createLabel(AntLaunchConfigurationMessages.AntBuilderTargetsTab_5, parent);
		fAutoBuildTargetText = createText(parent);
		fAutoBuildTarget = createPushButton(parent, AntLaunchConfigurationMessages.AntBuilderTargetsTab_6, null);
		gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
		fAutoBuildTarget.setLayoutData(gd);
		fAutoBuildTarget.addSelectionListener(fSelectionListener);

		createLabel(AntLaunchConfigurationMessages.AntBuilderTargetsTab_7, parent);
		fDuringCleanTargetText = createText(parent);
		fDuringCleanTarget = createPushButton(parent, AntLaunchConfigurationMessages.AntBuilderTargetsTab_8, null);
		gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
		fDuringCleanTarget.setLayoutData(gd);
		fDuringCleanTarget.addSelectionListener(fSelectionListener);
	}

	private Label createLabel(String text, Composite parent) {
		Label newLabel = new Label(parent, SWT.NONE);
		newLabel.setText(text);
		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalSpan = 2;
		newLabel.setLayoutData(gd);
		newLabel.setFont(parent.getFont());
		return newLabel;
	}

	private Text createText(Composite parent) {
		GridData gd;
		Text newText = new Text(parent, SWT.MULTI | SWT.WRAP | SWT.BORDER | SWT.V_SCROLL | SWT.READ_ONLY);
		newText.setFont(parent.getFont());
		gd = new GridData(GridData.FILL_HORIZONTAL);
		gd.heightHint = 40;
		gd.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
		newText.setLayoutData(gd);
		return newText;
	}

	protected void setTargets(String attribute, Text text) {
		ILaunchConfigurationWorkingCopy copy = null;
		try {
			copy = fConfiguration.getWorkingCopy();
		}
		catch (CoreException e) {
			return;
		}
		copy.setAttribute(IAntLaunchConstants.ATTR_ANT_TARGETS, fAttributeToTargets.get(attribute));
		SetTargetsDialog dialog = new SetTargetsDialog(getShell(), copy);
		if (dialog.open() != Window.OK) {
			return;
		}
		String targetsSelected = dialog.getTargetsSelected();

		if (targetsSelected == null) {// default
			text.setEnabled(true);
			fAttributeToTargets.remove(attribute);
			setTargetsForUser(text, DEFAULT_TARGET_SELECTED, null);
		} else if (targetsSelected.length() == 0) {
			text.setEnabled(false);
			fAttributeToTargets.remove(attribute);
			text.setText(NOT_ENABLED);
		} else {
			text.setEnabled(true);
			fAttributeToTargets.put(attribute, targetsSelected);
			setTargetsForUser(text, targetsSelected, null);
		}
	}

	private void setTargetsForUser(Text text, String targetsSelected, String configTargets) {
		if (!text.isEnabled()) {
			text.setText(NOT_ENABLED);
			return;
		}
		if (targetsSelected == null) {
			if (configTargets == null) {
				// build kind has been specified..see initializeBuildKinds
				text.setText(DEFAULT_TARGET_SELECTED);
				return;
			}
			targetsSelected = configTargets;
		}
		String[] targets = AntUtil.parseRunTargets(targetsSelected);
		StringBuffer result = new StringBuffer(targets[0]);
		for (int i = 1; i < targets.length; i++) {
			result.append(", "); //$NON-NLS-1$
			result.append(targets[i]);
		}
		text.setText(result.toString());
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#createControl(org.eclipse.swt.widgets.Composite)
	 */
	@Override
	public void createControl(Composite parent) {
		Composite mainComposite = new Composite(parent, SWT.NONE);
		setControl(mainComposite);
		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IAntUIHelpContextIds.ANT_BUILDER_TAB);

		GridLayout layout = new GridLayout();
		GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
		gridData.horizontalSpan = 2;
		layout.numColumns = 2;
		layout.makeColumnsEqualWidth = false;
		layout.horizontalSpacing = 0;
		layout.verticalSpacing = 0;
		mainComposite.setLayout(layout);
		mainComposite.setLayoutData(gridData);
		mainComposite.setFont(parent.getFont());
		createTargetsComponent(mainComposite);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#setDefaults(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
	 */
	@Override
	public void setDefaults(ILaunchConfigurationWorkingCopy configuration) {
		configuration.setAttribute(IExternalToolConstants.ATTR_TRIGGERS_CONFIGURED, true);
		configuration.setAttribute(IAntLaunchConstants.ATTR_TARGETS_UPDATED, true);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#initializeFrom(org.eclipse.debug.core.ILaunchConfiguration)
	 */
	@Override
	public void initializeFrom(ILaunchConfiguration configuration) {
		fConfiguration = configuration;

		fAfterCleanTargetText.setEnabled(false);
		fManualBuildTargetText.setEnabled(false);
		fAutoBuildTargetText.setEnabled(false);
		fDuringCleanTargetText.setEnabled(false);

		initializeBuildKinds(configuration);
		intializeTargets(configuration);
	}

	private void intializeTargets(ILaunchConfiguration configuration) {
		String configTargets = null;
		String autoTargets = null;
		String manualTargets = null;
		String afterCleanTargets = null;
		String duringCleanTargets = null;
		try {
			if (!configuration.getAttribute(IAntLaunchConstants.ATTR_TARGETS_UPDATED, false)) {
				// not yet migrated to new format
				configTargets = configuration.getAttribute(IAntLaunchConstants.ATTR_ANT_TARGETS, (String) null);
			}

			autoTargets = configuration.getAttribute(IAntLaunchConstants.ATTR_ANT_AUTO_TARGETS, (String) null);
			manualTargets = configuration.getAttribute(IAntLaunchConstants.ATTR_ANT_MANUAL_TARGETS, (String) null);
			afterCleanTargets = configuration.getAttribute(IAntLaunchConstants.ATTR_ANT_AFTER_CLEAN_TARGETS, (String) null);
			duringCleanTargets = configuration.getAttribute(IAntLaunchConstants.ATTR_ANT_CLEAN_TARGETS, (String) null);
			initializeAttributeToTargets(fAutoBuildTargetText, autoTargets, configTargets, IAntLaunchConstants.ATTR_ANT_AUTO_TARGETS);
			initializeAttributeToTargets(fManualBuildTargetText, manualTargets, configTargets, IAntLaunchConstants.ATTR_ANT_MANUAL_TARGETS);
			initializeAttributeToTargets(fDuringCleanTargetText, duringCleanTargets, configTargets, IAntLaunchConstants.ATTR_ANT_CLEAN_TARGETS);
			initializeAttributeToTargets(fAfterCleanTargetText, afterCleanTargets, configTargets, IAntLaunchConstants.ATTR_ANT_AFTER_CLEAN_TARGETS);
		}
		catch (CoreException ce) {
			AntUIPlugin.log("Error reading configuration", ce); //$NON-NLS-1$
		}

		setTargetsForUser(fManualBuildTargetText, manualTargets, configTargets);
		setTargetsForUser(fAfterCleanTargetText, afterCleanTargets, configTargets);
		setTargetsForUser(fDuringCleanTargetText, duringCleanTargets, configTargets);
		setTargetsForUser(fAutoBuildTargetText, autoTargets, configTargets);
	}

	private void initializeAttributeToTargets(Text textComponent, String specificTargets, String configTargets, String attribute) {
		if (textComponent.isEnabled()) {
			if (specificTargets == null && configTargets != null) {
				fAttributeToTargets.put(attribute, configTargets);
			} else {
				fAttributeToTargets.put(attribute, specificTargets);
			}
		}
	}

	private void initializeBuildKinds(ILaunchConfiguration configuration) {
		String buildKindString = null;
		try {
			buildKindString = configuration.getAttribute(IExternalToolConstants.ATTR_RUN_BUILD_KINDS, IAntCoreConstants.EMPTY_STRING);
		}
		catch (CoreException e) {
			AntUIPlugin.log("Error reading configuration", e); //$NON-NLS-1$
		}
		int buildTypes[] = BuilderCoreUtils.buildTypesToArray(buildKindString);
		for (int i = 0; i < buildTypes.length; i++) {
			switch (buildTypes[i]) {
				case IncrementalProjectBuilder.FULL_BUILD:
					fAfterCleanTargetText.setEnabled(true);
					break;
				case IncrementalProjectBuilder.INCREMENTAL_BUILD:
					fManualBuildTargetText.setEnabled(true);
					break;
				case IncrementalProjectBuilder.AUTO_BUILD:
					fAutoBuildTargetText.setEnabled(true);
					break;
				case IncrementalProjectBuilder.CLEAN_BUILD:
					fDuringCleanTargetText.setEnabled(true);
					break;
				default:
					break;
			}
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#performApply(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
	 */
	@Override
	public void performApply(ILaunchConfigurationWorkingCopy configuration) {
		StringBuffer buffer = new StringBuffer();
		if (!fAfterCleanTargetText.getText().equals(NOT_ENABLED)) {
			buffer.append(IExternalToolConstants.BUILD_TYPE_FULL).append(',');
		}
		if (!fManualBuildTargetText.getText().equals(NOT_ENABLED)) {
			buffer.append(IExternalToolConstants.BUILD_TYPE_INCREMENTAL).append(',');
		}
		if (!fAutoBuildTargetText.getText().equals(NOT_ENABLED)) {
			buffer.append(IExternalToolConstants.BUILD_TYPE_AUTO).append(',');
		}
		if (!fDuringCleanTargetText.getText().equals(NOT_ENABLED)) {
			buffer.append(IExternalToolConstants.BUILD_TYPE_CLEAN);
		}
		configuration.setAttribute(IExternalToolConstants.ATTR_RUN_BUILD_KINDS, buffer.toString());

		String targets = fAttributeToTargets.get(IAntLaunchConstants.ATTR_ANT_AFTER_CLEAN_TARGETS);
		configuration.setAttribute(IAntLaunchConstants.ATTR_ANT_AFTER_CLEAN_TARGETS, targets);
		targets = fAttributeToTargets.get(IAntLaunchConstants.ATTR_ANT_AUTO_TARGETS);
		configuration.setAttribute(IAntLaunchConstants.ATTR_ANT_AUTO_TARGETS, targets);
		targets = fAttributeToTargets.get(IAntLaunchConstants.ATTR_ANT_MANUAL_TARGETS);
		configuration.setAttribute(IAntLaunchConstants.ATTR_ANT_MANUAL_TARGETS, targets);
		targets = fAttributeToTargets.get(IAntLaunchConstants.ATTR_ANT_CLEAN_TARGETS);
		configuration.setAttribute(IAntLaunchConstants.ATTR_ANT_CLEAN_TARGETS, targets);
		configuration.setAttribute(IAntLaunchConstants.ATTR_TARGETS_UPDATED, true);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getName()
	 */
	@Override
	public String getName() {
		return AntLaunchConfigurationMessages.AntTargetsTab_Tar_gets_14;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getImage()
	 */
	@Override
	public Image getImage() {
		return AntUIImages.getImage(IAntUIConstants.IMG_TAB_ANT_TARGETS);
	}
}