/**
 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
 *
 * The contents of this file are subject to the terms of the Liferay Enterprise
 * Subscription License ("License"). You may not use this file except in
 * compliance with the License. You can obtain a copy of the License by
 * contacting Liferay, Inc. See the License for the specific language governing
 * permissions and limitations under the License, including but not limited to
 * distribution rights of the Software.
 *
 *
 *
 */

package com.liferay.portal.service.impl;

import com.liferay.portal.LayoutFriendlyURLException;
import com.liferay.portal.LayoutFriendlyURLsException;
import com.liferay.portal.LayoutNameException;
import com.liferay.portal.LayoutParentLayoutIdException;
import com.liferay.portal.LayoutTypeException;
import com.liferay.portal.NoSuchLayoutException;
import com.liferay.portal.kernel.bean.BeanReference;
import com.liferay.portal.kernel.bean.IdentifiableBean;
import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.language.LanguageUtil;
import com.liferay.portal.kernel.portlet.FriendlyURLMapper;
import com.liferay.portal.kernel.util.FriendlyURLNormalizerUtil;
import com.liferay.portal.kernel.util.LocaleUtil;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.kernel.util.Validator;
import com.liferay.portal.model.Group;
import com.liferay.portal.model.Layout;
import com.liferay.portal.model.LayoutConstants;
import com.liferay.portal.model.LayoutFriendlyURL;
import com.liferay.portal.model.LayoutSet;
import com.liferay.portal.model.LayoutSetPrototype;
import com.liferay.portal.model.ResourceConstants;
import com.liferay.portal.model.Role;
import com.liferay.portal.model.RoleConstants;
import com.liferay.portal.model.impl.LayoutImpl;
import com.liferay.portal.security.permission.ActionKeys;
import com.liferay.portal.service.PortletLocalServiceUtil;
import com.liferay.portal.service.ResourcePermissionLocalService;
import com.liferay.portal.service.RoleLocalServiceUtil;
import com.liferay.portal.service.persistence.LayoutFriendlyURLPersistence;
import com.liferay.portal.service.persistence.LayoutPersistence;
import com.liferay.portal.service.persistence.LayoutSetPersistence;
import com.liferay.portal.util.Portal;
import com.liferay.portal.util.PortalUtil;
import com.liferay.portal.util.comparator.LayoutPriorityComparator;
import com.liferay.portlet.sites.util.SitesUtil;

import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

/**
 * @author Raymond Augé
 */
public class LayoutLocalServiceHelper implements IdentifiableBean {

	@Override
	public String getBeanIdentifier() {
		return _beanIdentifier;
	}

	public String getFriendlyURL(
			long groupId, boolean privateLayout, long layoutId, String name,
			String friendlyURL)
		throws PortalException, SystemException {

		friendlyURL = getFriendlyURL(friendlyURL);

		if (Validator.isNotNull(friendlyURL)) {
			return friendlyURL;
		}

		friendlyURL = StringPool.SLASH + getFriendlyURL(name);

		String originalFriendlyURL = friendlyURL;

		for (int i = 1;; i++) {
			try {
				validateFriendlyURL(
					groupId, privateLayout, layoutId, friendlyURL);

				break;
			}
			catch (LayoutFriendlyURLException lfurle) {
				int type = lfurle.getType();

				if (type == LayoutFriendlyURLException.DUPLICATE) {
					friendlyURL = originalFriendlyURL + i;
				}
				else {
					friendlyURL = StringPool.SLASH + layoutId;

					break;
				}
			}
		}

		return friendlyURL;
	}

	public String getFriendlyURL(String friendlyURL) {
		return FriendlyURLNormalizerUtil.normalize(friendlyURL);
	}

	public Map<Locale, String> getFriendlyURLMap(
			long groupId, boolean privateLayout, long layoutId, String name,
			Map<Locale, String> friendlyURLMap)
		throws PortalException, SystemException {

		Map<Locale, String> newFriendlyURLMap = new HashMap<Locale, String>();

		Locale[] locales = LanguageUtil.getAvailableLocales(groupId);

		for (Locale locale : locales) {
			String friendlyURL = friendlyURLMap.get(locale);

			if (Validator.isNotNull(friendlyURL)) {
				friendlyURL = getFriendlyURL(
					groupId, privateLayout, layoutId, name, friendlyURL);

				newFriendlyURLMap.put(locale, friendlyURL);
			}
		}

		Locale siteDefaultLocale = LocaleUtil.getSiteDefault();

		if (newFriendlyURLMap.isEmpty() ||
			Validator.isNull(newFriendlyURLMap.get(siteDefaultLocale))) {

			String friendlyURL = getFriendlyURL(
				groupId, privateLayout, layoutId, name, StringPool.BLANK);

			newFriendlyURLMap.put(siteDefaultLocale, friendlyURL);
		}

		return newFriendlyURLMap;
	}

	public int getNextPriority(
			long groupId, boolean privateLayout, long parentLayoutId,
			String sourcePrototypeLayoutUuid, int defaultPriority)
		throws SystemException {

		try {
			int priority = defaultPriority;

			if (priority < 0) {
				Layout layout = layoutPersistence.findByG_P_P_First(
					groupId, privateLayout, parentLayoutId,
					new LayoutPriorityComparator(false));

				priority = layout.getPriority() + 1;
			}

			if ((priority < _PRIORITY_BUFFER) &&
				Validator.isNull(sourcePrototypeLayoutUuid)) {

				LayoutSet layoutSet = layoutSetPersistence.fetchByG_P(
					groupId, privateLayout);

				if (Validator.isNotNull(
						layoutSet.getLayoutSetPrototypeUuid()) &&
					layoutSet.isLayoutSetPrototypeLinkEnabled()) {

					priority = priority + _PRIORITY_BUFFER;
				}
			}

			return priority;
		}
		catch (NoSuchLayoutException nsle) {
			return 0;
		}
	}

	public long getParentLayoutId(
			long groupId, boolean privateLayout, long parentLayoutId)
		throws SystemException {

		if (parentLayoutId != LayoutConstants.DEFAULT_PARENT_LAYOUT_ID) {

			// Ensure parent layout exists

			Layout parentLayout = layoutPersistence.fetchByG_P_L(
				groupId, privateLayout, parentLayoutId);

			if (parentLayout == null) {
				parentLayoutId = LayoutConstants.DEFAULT_PARENT_LAYOUT_ID;
			}
		}

		return parentLayoutId;
	}

	public boolean hasLayoutSetPrototypeLayout(
			LayoutSetPrototype layoutSetPrototype, String layoutUuid)
		throws PortalException, SystemException {

		Layout layout = layoutPersistence.fetchByUUID_G_P(
			layoutUuid, layoutSetPrototype.getGroupId(), true);

		if (layout != null) {
			return true;
		}

		return false;
	}

	@Override
	public void setBeanIdentifier(String beanIdentifier) {
		_beanIdentifier = beanIdentifier;
	}

	public void validate(
			long groupId, boolean privateLayout, long layoutId,
			long parentLayoutId, String name, String type, boolean hidden,
			Map<Locale, String> friendlyURLMap)
		throws PortalException, SystemException {

		validateName(name);

		boolean firstLayout = false;

		if (parentLayoutId == LayoutConstants.DEFAULT_PARENT_LAYOUT_ID) {
			List<Layout> layouts = layoutPersistence.findByG_P_P(
				groupId, privateLayout, parentLayoutId, 0, 1);

			if (layouts.size() == 0) {
				firstLayout = true;
			}
			else {
				long firstLayoutId = layouts.get(0).getLayoutId();

				if (firstLayoutId == layoutId) {
					firstLayout = true;
				}
			}
		}
		else {

			// Layout cannot become a child of a layout that is not sortable
			// because it is linked to a layout set prototype

			Layout layout = layoutPersistence.fetchByG_P_L(
				groupId, privateLayout, layoutId);
			Layout parentLayout = layoutPersistence.findByG_P_L(
				groupId, privateLayout, parentLayoutId);

			if (((layout == null) ||
				 Validator.isNull(layout.getSourcePrototypeLayoutUuid())) &&
				!SitesUtil.isLayoutSortable(parentLayout)) {

				throw new LayoutParentLayoutIdException(
					LayoutParentLayoutIdException.NOT_SORTABLE);
			}
		}

		if (firstLayout) {
			validateFirstLayout(type);
		}

		if (!PortalUtil.isLayoutParentable(type)) {
			if (layoutPersistence.countByG_P_P(
					groupId, privateLayout, layoutId) > 0) {

				throw new LayoutTypeException(
					LayoutTypeException.NOT_PARENTABLE);
			}
		}

		validateFriendlyURLs(groupId, privateLayout, layoutId, friendlyURLMap);
	}

	public void validateFirstLayout(Layout layout)
		throws PortalException, SystemException {

		Group group = layout.getGroup();

		if (group.isGuest() && layout.isPublicLayout() &&
			!hasGuestViewPermission(layout)) {

			LayoutTypeException lte = new LayoutTypeException(
				LayoutTypeException.FIRST_LAYOUT_PERMISSION);

			throw lte;
		}

		validateFirstLayout(layout.getType());
	}

	public void validateFirstLayout(String type) throws PortalException {
		if (Validator.isNull(type) || !PortalUtil.isLayoutFirstPageable(type)) {
			LayoutTypeException lte = new LayoutTypeException(
				LayoutTypeException.FIRST_LAYOUT);

			lte.setLayoutType(type);

			throw lte;
		}
	}

	public void validateFriendlyURL(
			long groupId, boolean privateLayout, long layoutId,
			String friendlyURL)
		throws PortalException, SystemException {

		if (Validator.isNull(friendlyURL)) {
			return;
		}

		int exceptionType = LayoutImpl.validateFriendlyURL(friendlyURL);

		if (exceptionType != -1) {
			throw new LayoutFriendlyURLException(exceptionType);
		}

		List<LayoutFriendlyURL> layoutFriendlyURLs =
			layoutFriendlyURLPersistence.findByG_P_F(
				groupId, privateLayout, friendlyURL);

		for (LayoutFriendlyURL layoutFriendlyURL : layoutFriendlyURLs) {
			Layout layout = layoutPersistence.findByPrimaryKey(
				layoutFriendlyURL.getPlid());

			if (layout.getLayoutId() != layoutId) {
				throw new LayoutFriendlyURLException(
					LayoutFriendlyURLException.DUPLICATE);
			}
		}

		LayoutImpl.validateFriendlyURLKeyword(friendlyURL);

		if (friendlyURL.contains(Portal.FRIENDLY_URL_SEPARATOR)) {
			LayoutFriendlyURLException lfurle =
				new LayoutFriendlyURLException(
					LayoutFriendlyURLException.KEYWORD_CONFLICT);

			lfurle.setKeywordConflict(Portal.FRIENDLY_URL_SEPARATOR);

			throw lfurle;
		}

		List<FriendlyURLMapper> friendlyURLMappers =
			PortletLocalServiceUtil.getFriendlyURLMappers();

		for (FriendlyURLMapper friendlyURLMapper : friendlyURLMappers) {
			if (friendlyURLMapper.isCheckMappingWithPrefix()) {
				continue;
			}

			String mapping = StringPool.SLASH + friendlyURLMapper.getMapping();

			if (friendlyURL.contains(mapping + StringPool.SLASH) ||
				friendlyURL.endsWith(mapping)) {

				LayoutFriendlyURLException lfurle =
					new LayoutFriendlyURLException(
						LayoutFriendlyURLException.KEYWORD_CONFLICT);

				lfurle.setKeywordConflict(friendlyURLMapper.getMapping());

				throw lfurle;
			}
		}

		Locale[] availableLocales = LanguageUtil.getAvailableLocales();

		for (Locale locale : availableLocales) {
			String languageId = StringUtil.toLowerCase(
				LocaleUtil.toLanguageId(locale));

			String i18nPathLanguageId =
				StringPool.SLASH +
					PortalUtil.getI18nPathLanguageId(locale, languageId);

			if (friendlyURL.startsWith(i18nPathLanguageId + StringPool.SLASH) ||
				friendlyURL.startsWith(
					StringPool.SLASH + languageId + StringPool.SLASH) ||
				friendlyURL.endsWith(i18nPathLanguageId) ||
				friendlyURL.endsWith(StringPool.SLASH + languageId)) {

				LayoutFriendlyURLException lfurle =
					new LayoutFriendlyURLException(
						LayoutFriendlyURLException.KEYWORD_CONFLICT);

				lfurle.setKeywordConflict(i18nPathLanguageId);

				throw lfurle;
			}
		}

		String layoutIdFriendlyURL = friendlyURL.substring(1);

		if (Validator.isNumber(layoutIdFriendlyURL) &&
			!layoutIdFriendlyURL.equals(String.valueOf(layoutId))) {

			LayoutFriendlyURLException lfurle = new LayoutFriendlyURLException(
				LayoutFriendlyURLException.POSSIBLE_DUPLICATE);

			lfurle.setKeywordConflict(layoutIdFriendlyURL);

			throw lfurle;
		}
	}

	public void validateFriendlyURLs(
			long groupId, boolean privateLayout, long layoutId,
			Map<Locale, String> friendlyURLMap)
		throws PortalException, SystemException {

		LayoutFriendlyURLsException layoutFriendlyURLsException = null;

		for (Map.Entry<Locale, String> entry : friendlyURLMap.entrySet()) {
			try {
				String friendlyURL = entry.getValue();

				validateFriendlyURL(
					groupId, privateLayout, layoutId, friendlyURL);
			}
			catch (LayoutFriendlyURLException lfurle) {
				Locale locale = entry.getKey();

				if (layoutFriendlyURLsException == null) {
					layoutFriendlyURLsException =
						new LayoutFriendlyURLsException();
				}

				layoutFriendlyURLsException.addLocalizedException(
					locale, lfurle);
			}
		}

		if (layoutFriendlyURLsException != null) {
			throw layoutFriendlyURLsException;
		}
	}

	public void validateName(String name) throws PortalException {
		if (Validator.isNull(name)) {
			throw new LayoutNameException();
		}
	}

	public void validateName(String name, String languageId)
		throws PortalException {

		String defaultLanguageId = LocaleUtil.toLanguageId(
			LocaleUtil.getSiteDefault());

		if (defaultLanguageId.equals(languageId)) {
			validateName(name);
		}
	}

	public void validateParentLayoutId(
			long groupId, boolean privateLayout, long layoutId,
			long parentLayoutId)
		throws PortalException, SystemException {

		Layout layout = layoutPersistence.findByG_P_L(
			groupId, privateLayout, layoutId);

		if (parentLayoutId == layout.getParentLayoutId()) {
			return;
		}

		// Layouts can always be moved to the root level

		if (parentLayoutId == LayoutConstants.DEFAULT_PARENT_LAYOUT_ID) {
			return;
		}

		// Layout cannot become a child of a layout that is not parentable

		Layout parentLayout = layoutPersistence.findByG_P_L(
			groupId, privateLayout, parentLayoutId);

		if (!PortalUtil.isLayoutParentable(parentLayout)) {
			throw new LayoutParentLayoutIdException(
				LayoutParentLayoutIdException.NOT_PARENTABLE);
		}

		// Layout cannot become a child of a layout that is not sortable because
		// it is linked to a layout set prototype

		if (Validator.isNull(layout.getSourcePrototypeLayoutUuid()) &&
			!SitesUtil.isLayoutSortable(parentLayout)) {

			throw new LayoutParentLayoutIdException(
				LayoutParentLayoutIdException.NOT_SORTABLE);
		}

		// Layout cannot become descendant of itself

		if (PortalUtil.isLayoutDescendant(layout, parentLayoutId)) {
			throw new LayoutParentLayoutIdException(
				LayoutParentLayoutIdException.SELF_DESCENDANT);
		}

		// If layout is moved, the new first layout must be valid

		if (layout.getParentLayoutId() ==
				LayoutConstants.DEFAULT_PARENT_LAYOUT_ID) {

			List<Layout> layouts = layoutPersistence.findByG_P_P(
				groupId, privateLayout,
				LayoutConstants.DEFAULT_PARENT_LAYOUT_ID, 0, 2);

			// You can only reach this point if there are more than two layouts
			// at the root level because of the descendant check

			long firstLayoutId = layouts.get(0).getLayoutId();

			if (firstLayoutId == layoutId) {
				Layout secondLayout = layouts.get(1);

				if (Validator.isNull(secondLayout.getType()) ||
					!PortalUtil.isLayoutFirstPageable(secondLayout.getType())) {

					throw new LayoutParentLayoutIdException(
						LayoutParentLayoutIdException.FIRST_LAYOUT_TYPE);
				}
			}
		}
	}

	protected boolean hasGuestViewPermission(Layout layout)
		throws PortalException, SystemException {

		Role role = RoleLocalServiceUtil.getRole(
			layout.getCompanyId(), RoleConstants.GUEST);

		return resourcePermissionLocalService.hasResourcePermission(
			layout.getCompanyId(), Layout.class.getName(),
			ResourceConstants.SCOPE_INDIVIDUAL,
			String.valueOf(layout.getPlid()), role.getRoleId(),
			ActionKeys.VIEW);
	}

	@BeanReference(type = LayoutFriendlyURLPersistence.class)
	protected LayoutFriendlyURLPersistence layoutFriendlyURLPersistence;

	@BeanReference(type = LayoutPersistence.class)
	protected LayoutPersistence layoutPersistence;

	@BeanReference(type = LayoutSetPersistence.class)
	protected LayoutSetPersistence layoutSetPersistence;

	@BeanReference(type = ResourcePermissionLocalService.class)
	protected ResourcePermissionLocalService resourcePermissionLocalService;

	private static final int _PRIORITY_BUFFER = 1000000;

	private String _beanIdentifier;

}