/*******************************************************************************
 * Copyright (c) 2003, 2004, 2005 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.wst.common.componentcore.internal.operation;

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

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
import org.eclipse.wst.common.componentcore.internal.StructureEdit;
import org.eclipse.wst.common.componentcore.internal.WorkbenchComponent;
import org.eclipse.wst.common.componentcore.internal.util.IModuleConstants;
import org.eclipse.wst.common.frameworks.internal.operations.WTPOperationDataModel;
import org.eclipse.wst.common.frameworks.internal.operations.WTPOperationDataModelEvent;
import org.eclipse.wst.common.frameworks.internal.operations.WTPPropertyDescriptor;
import org.eclipse.wst.common.frameworks.internal.plugin.WTPCommonMessages;
import org.eclipse.wst.common.frameworks.internal.plugin.WTPCommonPlugin;
import org.eclipse.wst.server.core.IModuleType;
import org.eclipse.wst.server.core.IProjectProperties;
import org.eclipse.wst.server.core.IRuntimeType;
import org.eclipse.wst.server.core.ServerCore;

/**
 * This dataModel is a common super class used for creation of WTP Components.
 * 
 * This class (and all its fields and methods) is likely to change during the WTP 1.0 milestones as
 * the new project structures are adopted. Use at your own risk.
 * 
 * @since WTP 1.0
 */
public abstract class ComponentCreationDataModel extends WTPOperationDataModel {

	/**
	 * Required
	 */
	public static final String PROJECT_NAME = "ComponentCreationDataModel.PROJECT_NAME"; //$NON-NLS-1$

	/**
	 * Required
	 */
	public static final String COMPONENT_NAME = "ComponentCreationDataModel.COMPONENT_NAME"; //$NON-NLS-1$
	/**
	 * Required
	 */

	public static final String COMPONENT_DEPLOY_NAME = "ComponentCreationDataModel.MODULE_DEPLOY_NAME"; //$NON-NLS-1$

	/**
	 * An optional dataModel propertyName for a <code>Boolean</code> type. The default value is
	 * <code>Boolean.TRUE</code>. If this property is set to <code>Boolean.TRUE</code> then a
	 * default deployment descriptor and supporting bindings files will be generated.
	 */
	public static final String CREATE_DEFAULT_FILES = "ComponentCreationDataModel.CREATE_DEFAULT_FILES"; //$NON-NLS-1$

	/**
	 * An optional dataModel propertyName for a <code>Boolean</code> type. The default value is
	 * <code>Boolean.TRUE</code>. If this property is set to <code>Boolean.TRUE</code> then a
	 * default deployment descriptor and supporting bindings files will be generated.
	 */
	public static final String SHOULD_CREATE_PROJECT = "ComponentCreationDataModel.SHOULD_CREATE_PROJECT"; //$NON-NLS-1$

	/**
	 * Optional, type String
	 */
	public static final String FINAL_PERSPECTIVE = "ComponentCreationDataModel.FINAL_PERSPECTIVE"; //$NON-NLS-1$

	protected static final String IS_ENABLED = "ComponentCreationDataModel.IS_ENABLED"; //$NON-NLS-1$

	/**
	 * type Integer
	 */
	public static final String COMPONENT_VERSION = "ComponentCreationDataModel.COMPONENT_VERSION"; //$NON-NLS-1$

	/**
	 * type Integer
	 */
	public static final String VALID_MODULE_VERSIONS_FOR_PROJECT_RUNTIME = "ComponentCreationDataModel.VALID_MODULE_VERSIONS_FOR_PROJECT_RUNTIME"; //$NON-NLS-1$

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.wst.common.frameworks.operations.WTPOperationDataModel#init()
	 */
	protected void init() {
		super.init();
		setProperty(COMPONENT_VERSION, getDefaultProperty(COMPONENT_VERSION));
	}

	protected void initValidBaseProperties() {
		addValidBaseProperty(PROJECT_NAME);
		addValidBaseProperty(COMPONENT_NAME);
		addValidBaseProperty(COMPONENT_DEPLOY_NAME);
		addValidBaseProperty(CREATE_DEFAULT_FILES);
		addValidBaseProperty(IS_ENABLED);
		addValidBaseProperty(FINAL_PERSPECTIVE);
		addValidBaseProperty(COMPONENT_VERSION);
		addValidBaseProperty(VALID_MODULE_VERSIONS_FOR_PROJECT_RUNTIME);
	}

	protected Boolean basicIsEnabled(String propertyName) {
		return (Boolean) getProperty(IS_ENABLED);
	}

	public void propertyChanged(WTPOperationDataModelEvent event) {
		if (event.getFlag() == WTPOperationDataModelEvent.PROPERTY_CHG) {
			event.getDataModel();
		}
		super.propertyChanged(event);
	}

	protected boolean doSetProperty(String propertyName, Object propertyValue) {
		if(propertyValue != null && COMPONENT_VERSION.equals(propertyName)){
			if(!(propertyValue instanceof Integer)){
				return false;
			}
		}
		super.doSetProperty(propertyName, propertyValue);
		if (PROJECT_NAME.equals(propertyName) && propertyValue != null && ((String) propertyValue).length() != 0) {
			IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject((String) propertyValue);
			if (project != null) {
				IProjectProperties projProperties = ServerCore.getProjectProperties(project);
				if (projProperties.getRuntimeTarget() != null) {
					String[] validModuleVersions = getServerVersions(getComponentID(), projProperties.getRuntimeTarget().getRuntimeType());
					setProperty(VALID_MODULE_VERSIONS_FOR_PROJECT_RUNTIME, validModuleVersions);
				}
			}
		} else if (IS_ENABLED.equals(propertyName)) {
			notifyEnablementChange(PROJECT_NAME);
		} else if (COMPONENT_NAME.equals(propertyName))
			setProperty(COMPONENT_DEPLOY_NAME, propertyValue);
		return true;
	}

	protected WTPPropertyDescriptor[] doGetValidPropertyDescriptors(String propertyName) {
		if (propertyName.equals(COMPONENT_VERSION)) {
			return getValidComponentVersionDescriptors();
		}
		return super.doGetValidPropertyDescriptors(propertyName);
	}

	protected IStatus doValidateProperty(String propertyName) {
		if (propertyName.equals(COMPONENT_NAME)) {
			IStatus status = OK_STATUS;
			String moduleName = getStringProperty(COMPONENT_NAME);
			if (status.isOK()) {
				if (moduleName.indexOf("#") != -1) { //$NON-NLS-1$
					String errorMessage = WTPCommonPlugin.getResourceString(WTPCommonMessages.ERR_INVALID_CHARS); //$NON-NLS-1$
					return WTPCommonPlugin.createErrorStatus(errorMessage);
				} else if (moduleName == null || moduleName.equals("")) { //$NON-NLS-1$
					String errorMessage = WTPCommonPlugin.getResourceString(WTPCommonMessages.ERR_EMPTY_MODULE_NAME);
					return WTPCommonPlugin.createErrorStatus(errorMessage);
				}
				return checkForDuplicateName(moduleName);
			} else
				return status;

		} else if (propertyName.equals(NESTED_MODEL_VALIDATION_HOOK)) {
			return OK_STATUS;
		} else if (COMPONENT_VERSION.equals(propertyName)) {
			return validateComponentVersionProperty();
		} else if (propertyName.equals(PROJECT_NAME)) {
			String projectName = getStringProperty(PROJECT_NAME);
			if (projectName == null || projectName.length() == 0) {
				String errorMessage = WTPCommonPlugin.getResourceString(WTPCommonMessages.PROJECT_NAME_EMPTY);
				return WTPCommonPlugin.createErrorStatus(errorMessage);
			}
		}
		return super.doValidateProperty(propertyName);
	}

	protected IStatus checkForDuplicateName(String componentName) {

		IStatus status = OK_STATUS;
		StructureEdit structureEdit = null;
		try {

			structureEdit = StructureEdit.getStructureEditForRead(getProject());
			WorkbenchComponent component = structureEdit.findComponentByName(componentName);
			if (component != null) {

				String errorMessage = WTPCommonPlugin.getResourceString(WTPCommonMessages.DUPLICATE_COMPONENT_NAME);
				status = WTPCommonPlugin.createErrorStatus(errorMessage);
			}

		} finally {
			if (null != structureEdit) {
				structureEdit.dispose();
			}
		}
		return status;
	}

	private IStatus validateComponentVersionProperty() {
		int componentVersion = getIntProperty(COMPONENT_VERSION);

		if (componentVersion == -1)
			return WTPCommonPlugin.createErrorStatus(WTPCommonPlugin.getResourceString(WTPCommonMessages.SPEC_LEVEL_NOT_FOUND));
		return OK_STATUS;
	}

	protected Object getDefaultProperty(String propertyName) {
		if (propertyName.equals(CREATE_DEFAULT_FILES) || propertyName.equals(IS_ENABLED)) {
			return Boolean.TRUE;
		} else if (propertyName.equals(COMPONENT_VERSION)) {
			return getDefaultComponentVersion();
		}
		return super.getDefaultProperty(propertyName);
	}

	protected boolean isResultProperty(String propertyName) {
		if (propertyName.equals(FINAL_PERSPECTIVE))
			return true;
		return super.isResultProperty(propertyName);
	}

	protected abstract WTPPropertyDescriptor[] getValidComponentVersionDescriptors();

	protected abstract EClass getComponentType();

	protected abstract String getComponentExtension();

	protected abstract Integer getDefaultComponentVersion();

	protected abstract String getComponentID();

	public static String[] getServerVersions(String moduleID, IRuntimeType type) {
		List list = new ArrayList();
		if (type == null)
			return null;
		IModuleType[] moduleTypes = type.getModuleTypes();
		if (moduleTypes != null) {
			int size = moduleTypes.length;
			for (int i = 0; i < size; i++) {
				IModuleType moduleType = moduleTypes[i];
				if (matches(moduleType.getId(), moduleID)) {
					list.add(moduleType.getVersion());
				}

			}
		}
		String[] versions = null;
		if (!list.isEmpty()) {
			versions = new String[list.size()];
			list.toArray(versions);
		}
		return versions;
	}

	// private static boolean matches(String a, String b) {
	// if (a == null || b == null || "*".equals(a) || "*".equals(b) || a.startsWith(b) ||
	// b.startsWith(a)) //$NON-NLS-1$ //$NON-NLS-2$
	// return true;
	// return false;
	// }

	// To do: remove hard coded string being compared.
	private static boolean matches(String serverTypeID, String j2eeModuleID) {

		if (serverTypeID.equals("j2ee")) {
			if (j2eeModuleID.equals(IModuleConstants.JST_WEB_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_EJB_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_EAR_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_APPCLIENT_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_CONNECTOR_MODULE)) {
				return true;
			}
		}else if (serverTypeID.equals("j2ee.*")) {
			if (j2eeModuleID.equals(IModuleConstants.JST_WEB_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_EJB_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_EAR_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_APPCLIENT_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_CONNECTOR_MODULE)) {
				return true;
			}
		} else if (serverTypeID.equals("j2ee.web")) {//$NON-NLS-1$
			if (j2eeModuleID.equals(IModuleConstants.JST_WEB_MODULE)) {
				return true;
			}
		} else if (serverTypeID.equals("j2ee.ejb")) {//$NON-NLS-1$
			if (j2eeModuleID.equals(IModuleConstants.JST_EJB_MODULE)) {
				return true;
			}
		} else if (serverTypeID.equals("j2ee.ear")) {//$NON-NLS-1$
			if (j2eeModuleID.equals(IModuleConstants.JST_EAR_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_APPCLIENT_MODULE) || j2eeModuleID.equals(IModuleConstants.JST_CONNECTOR_MODULE)) {
				return true;
			}
		}
		return false;
	}

	public IProject getProject() {
		String projName = getStringProperty(PROJECT_NAME);
		return ProjectUtilities.getProject(projName);
	}

	public String getComponentName() {
		return getStringProperty(COMPONENT_NAME);
	}

	public String getComponentDeployName() {
		return getStringProperty(COMPONENT_DEPLOY_NAME);
	}

	protected abstract String getVersion();

	protected abstract List getProperties();
}