/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.clerezza.platform.globalmenu;

/**
 * This class keeps information about an item for the global menu.
 *
 * @author mir
 */
public class GlobalMenuItem implements Comparable<GlobalMenuItem> {

    private String path;
    private String label;
    private String description;
    private String identifier;
    private int priority;
    private String groupIdentifier;

    /**
     * Creates a new <code>GlobalMenuItem</code>.
     *
     * @param relativeUri of the resource to be shown in the menu.
     * @param identifier The identifier of the menu item.
     * @param label Specifies the label of the menu entry.
     * @param priority the priority, higher numbers appear first in the menu
     * @param groupIdentifier Specifies the the identifier of the group of which
     *        the menu item is part.
     */
    public GlobalMenuItem(String path, String identifier, String label,
            int priority, String groupIdentifier) {
        if (label == null) {
            throw new IllegalArgumentException("label may not be null");
        }
        this.path = path;
        this.label = label;
        this.identifier = identifier;
        this.priority = priority;
        this.groupIdentifier = groupIdentifier;
    }

    /**
     * Creates a new <code>GlobalMenuItem</code>.
     *
     * @param relativeUri of the resource to be shown in the menu.
     * @param identifier The identifier of the menu item.
     * @param label Specifies the label of the menu entry.
     * @param description The description of the menu item.
     * @param priority the priority, higher numbers appear first in the menu
     * @param groupIdentifier Specifies the the identifier of the group of which
     *        the menu item is part.
     */
    public GlobalMenuItem(String path, String identifier, String label, String description,
            int priority, String groupIdentifier) {
        if (label == null) {
            throw new IllegalArgumentException("label may not be null");
        }
        this.path = path;
        this.label = label;
        this.description = description;
        this.identifier = identifier;
        this.priority = priority;
        this.groupIdentifier = groupIdentifier;
    }

    /**
     * Returns the path of the resource to be shown in the menu. The
     * path is additional to the bundle prefix and if existing to the
     * <code>javax.ws.rs.Path</code> annotation of the
     * <code>GlobalMenuItemsProvider</code> that returned this
     * <code>GlobalMenuItem</code>.
     * @return the path
     */
    public String getPath() {
        return path;
    }

    /**
     * Returns the label of the menu entry
     * @return the label
     */
    public String getLabel() {
        return label;
    }

    /**
     * Returns the description of the menu entry.
     * @return the groupIdentifier
     */
    public String getDescription() {
        return description;
    }

    /**
     * Return the identifier of the menu entry.
     *
     * @return
     */
    public String getIdentifier() {
        return identifier;
    }

    /**
     * Returns the the priority within the group, which is used for sorting
     * the menu Items, higher numbers appear first in the menu
     * @return the priority
     */
    public int getPriority() {
        return priority;
    }

    /**
     * Returns the the identifier of the group of which this menu item is part,
     * null if this is a top-level item.
     * @return the groupIdentifier
     */
    public String getGroupIdentifier() {
        return groupIdentifier;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final GlobalMenuItem other = (GlobalMenuItem) obj;
        if ((this.path == null) ? (other.path != null) : !this.path.equals(other.path)) {
            return false;
        }
        if (!this.label.equals(other.label)) {
            return false;
        }
        if ((this.description == null) ? (other.description != null) : !this.description.equals(other.description)) {
            return false;
        }
        if (this.priority != other.priority) {
            return false;
        }
        if ((this.groupIdentifier == null) ? (other.groupIdentifier != null) : !this.groupIdentifier.equals(other.groupIdentifier)) {
            return false;
        }
        return true;
    }

    @Override
    public int hashCode() {
        int hash = 5;
        hash = 53 * hash + (this.path != null ? this.path.hashCode() : 0);
        hash = 53 * hash + this.label.hashCode();
        hash = 53 * hash + (this.description != null ? this.description.hashCode() : 0);
        hash = 53 * hash + this.priority;
        hash = 53 * hash + (this.groupIdentifier != null ? this.groupIdentifier.hashCode() : 0);
        return hash;
    }

    

    @Override
    public int compareTo(GlobalMenuItem o) {
        if (getPriority() == o.getPriority()) {
            if (this.equals(o)) {
                return 0;
            } else {
                return getLabel().compareTo(o.getLabel());
            }
        }
        return o.getPriority() - getPriority();
    }
}