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 *
 * ADOBE CONFIDENTIAL
 * __________________
 *
 *  Copyright 2011 Adobe Systems Incorporated
 *  All Rights Reserved.
 *
 * NOTICE:  All information contained herein is, and remains
 * the property of Adobe Systems Incorporated and its suppliers,
 * if any.  The intellectual and technical concepts contained
 * herein are proprietary to Adobe Systems Incorporated and its
 * suppliers and are protected by trade secret or copyright law.
 * Dissemination of this information or reproduction of this material
 * is strictly forbidden unless prior written permission is obtained
 * from Adobe Systems Incorporated.
 **************************************************************************/
package com.day.cq.mcm.api;

import com.day.cq.tagging.Tag;
import com.day.cq.wcm.api.Page;
import org.apache.jackrabbit.api.security.user.Authorizable;
import org.apache.jackrabbit.api.security.user.User;
import org.apache.jackrabbit.api.security.user.UserManager;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceUtil;
import org.apache.sling.api.resource.ValueMap;
import org.apache.sling.commons.json.JSONArray;
import org.apache.sling.commons.json.JSONException;
import org.apache.sling.commons.json.JSONObject;
import org.apache.sling.commons.json.io.JSONWriter;

import javax.jcr.RepositoryException;
import java.util.Map;

/**
 * Utility methods for MCM.
 */
public class MCMUtil {

    public static String removePossibleJcrContent(String path) {
        if (path.endsWith("/")) {
            path = path.substring(0, path.length() - 1);
        }
        if (path.endsWith("/jcr:content")) {
            path = path.substring(0, path.length() - "/jcr:content".length());
        }
        return path;
    }

    /**
     * @param out
     * @param m
     * @throws JSONException
     */
    public static  void writeMapAsJsonObject(JSONWriter out, Map m) throws JSONException {
        out.object();
        for (String key : m.keySet()) {
            out.key(key).value(m.get(key));
        }
        out.endObject();
    }

    public static void addPossibleTagsToValues(Page aPage, Map values) throws JSONException {

        Tag[] tags = aPage.getTags();
        if (tags != null && tags.length > 0) {
            JSONArray tagsArray = new JSONArray();
            for (int i2 = 0; i2 < tags.length; i2++) {
                JSONObject tag = new JSONObject();
                tag.put("title", tags[i2].getTitle());
                tag.put("id", tags[i2].getTagID());
                tagsArray.put(tag);
            }
            values.put("tags", tagsArray);
        }

    }

    public static void addPossibleSegmentsToValues(ValueMap content, Map values,
                                                   ResourceResolver resourceResolver) throws JSONException {

        if (content.containsKey("cq:segments")) {
            JSONArray segArray = new JSONArray();
            if (content.get("cq:segments") instanceof String) {
                JSONObject seg = new JSONObject();
                seg.put("title", getSegmentName(resourceResolver, content.get("cq:segments").toString()));
                seg.put("path", content.get("cq:segments").toString());
                segArray.put(seg);
            } else {
                for (String segment : content.get("cq:segments", new String[0])) {
                    JSONObject seg = new JSONObject();
                    seg.put("title", getSegmentName(resourceResolver, segment));
                    seg.put("path", segment);
                    segArray.put(seg);
                }
            }
            values.put("segments", segArray);
        }
    }

    /**
     * Retrieves the title of the page under path or returns the path if the path
     * doesn't lead to a page.
     *
     * @param resolver
     * @param path
     * @return
     */
    public static String getSegmentName(ResourceResolver resolver, String path) {
        Resource resource = resolver.getResource(path);
        if (resource == null || !resource.getResourceType().equals("cq:Page"))
            return path;

        Page page = resource.adaptTo(Page.class);
        return page.getTitle();
    }

    /**
     * API to get authorizable user for the given Id
     *
     * @param rr
     * @param userId
     * @return
     */
    public static User getAuthorizedUser(ResourceResolver rr, String userId) {
        User retval = null;
        UserManager userManager = rr.adaptTo(UserManager.class);
        if (userManager == null) {
            throw new RuntimeException("Could not adapt resource resolver to UserManager.");
        }
        Authorizable authorizable = null;

        try {
            userManager.getAuthorizable(userId);
        } catch (RepositoryException e) {
            throw new RuntimeException(e);
        }

        if (authorizable != null && !authorizable.isGroup()) {
            retval = (User) authorizable;
        }

        return retval;
    }

    /**
     * Fetch user name from the given id
     *
     * @param rr
     * @param userId
     * @return
     */
    public static String getUserId(ResourceResolver rr, String userId) {
        String id = null;
        UserManager userManager = rr.adaptTo(UserManager.class);
        if (userManager == null) {
            throw new RuntimeException("Could not adapt resource resolver to UserManager.");
        }
        Authorizable authorizable = null;

        try {
            userManager.getAuthorizable(userId);
        } catch (RepositoryException e) {
            throw new RuntimeException(e);
        }

        if (authorizable != null && !authorizable.isGroup()) {
            try {
                id = authorizable.getPrincipal().getName();
            } catch (RepositoryException e) {
                throw new RuntimeException("Could not fetch name for the given UserId : " + userId);
            }
        }

        return id;
    }

    /**
     * Checks if the resource is of an experience type
     * (cq/personalization/components/teaserpage,
     * cq/personalization/components/offerpage,
     * mcm/components/newsletter/page,
     * mcm/campaign/components/campaign_newsletterpage).
     *
     * @param resource
     * @return true if type is an experience type, false
     *         otherwise.
     */
    public static boolean isAnExperience(Resource resource) {
        if (resource != null) {
            return (ResourceUtil.isA(resource, "cq/personalization/components/teaserpage") ||
                    ResourceUtil.isA(resource, "cq/personalization/components/offerpage") ||
                    ResourceUtil.isA(resource, "mcm/components/newsletter/page") ||
                    ResourceUtil.isA(resource, "mcm/campaign/components/campaign_newsletterpage") ||
                    ResourceUtil.isA(resource, "wcm/designimporter/components/importerpage") ||
                    ResourceUtil.isA(resource, "commerce/components/voucher") ||
                    ResourceUtil.isA(resource, "commerce/components/promotion") ||
                    ResourceUtil.isA(resource, "cq/personalization/components/experiencepage"))
                    ;
        }
        return false;
    }
    
}