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/*
 * Copyright 2015 Async-IO.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.atmosphere.util.analytics;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

/**
 * Fork of https://code.google.com/p/jgoogleanalytics/
 * Focus point of the application. It can represent data points like application load, application module load, user actions, error events etc.
 *
 * @author : Siddique Hameed
 * @version : 0.1
 */
public class FocusPoint {

    private String name;
    private FocusPoint parentFocusPoint;
    private static final String URI_SEPARATOR = "/";
    private static final String TITLE_SEPARATOR = "-";

    public FocusPoint(String name) {
        this.name = name;
    }

    public FocusPoint(String name, FocusPoint parentFocusPoint) {
        this(name);
        this.parentFocusPoint = parentFocusPoint;
    }

    public String getName() {
        return name;
    }

    public void setParentTrackPoint(FocusPoint parentFocusPoint) {
        this.parentFocusPoint = parentFocusPoint;
    }

    public FocusPoint getParentFocusPoint() {
        return parentFocusPoint;
    }

    public String getContentURI() {
        StringBuffer contentURIBuffer = new StringBuffer();
        getContentURI(contentURIBuffer, this);
        return contentURIBuffer.toString();
    }

    public String getContentTitle() {
        StringBuffer titleBuffer = new StringBuffer();
        getContentTitle(titleBuffer, this);
        return titleBuffer.toString();
    }

    private void getContentURI(StringBuffer contentURIBuffer, FocusPoint focusPoint) {
        FocusPoint parentFocuPoint = focusPoint.getParentFocusPoint();

        if (parentFocuPoint != null) {
            getContentURI(contentURIBuffer, parentFocuPoint);
        }
        contentURIBuffer.append(URI_SEPARATOR);
        contentURIBuffer.append(encode(focusPoint.getName()));
    }

    private String encode(String name) {
        if (name == null) name = "";
        try {
            return URLEncoder.encode(name, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            return name;
        }
    }

    private void getContentTitle(StringBuffer titleBuffer, FocusPoint focusPoint) {
        FocusPoint parentFocusPoint = focusPoint.getParentFocusPoint();

        if (parentFocusPoint != null) {
            getContentTitle(titleBuffer, parentFocusPoint);
            titleBuffer.append(TITLE_SEPARATOR);
        }
        titleBuffer.append(encode(focusPoint.getName()));
    }
}