/*
 * Copyright (c) 2006-2017 DMDirc Developers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.dmdirc.addons.ui_swing.components;

import com.dmdirc.interfaces.GroupChatUser;
import com.dmdirc.config.provider.AggregateConfigProvider;
import com.dmdirc.config.provider.ConfigChangeListener;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import javax.swing.AbstractListModel;

/** Stores and provides means to modify nicklist data for a channel. */
public final class NicklistListModel extends AbstractListModel<GroupChatUser> implements
        ConfigChangeListener {

    /** A version number for this class. */
    private static final long serialVersionUID = 1;
    /** stores the nicknames to be shown in this list. */
    private final List<GroupChatUser> nicknames;
    /** Config manager. */
    private final AggregateConfigProvider config;
    /** Sort by mode? */
    private boolean sortByMode;
    /** Sort by case? */
    private boolean sortByCase;

    /**
     * Creates a new empty model.
     *
     * @param config Config manager
     */
    public NicklistListModel(final AggregateConfigProvider config) {
        this(config, Collections.synchronizedList(new ArrayList<>()));
    }

    /**
     * Creates a new model and initiliases it with the data provided.
     *
     * @param config       Config manager
     * @param newNicknames list of nicknames used for initialisation
     */
    public NicklistListModel(final AggregateConfigProvider config,
            final List<GroupChatUser> newNicknames) {

        this.config = config;

        sortByMode = config.getOptionBool("nicklist", "sortByMode");
        sortByCase = config.getOptionBool("nicklist", "sortByCase");
        config.addChangeListener("nicklist", "sortByMode", this);
        config.addChangeListener("nicklist", "sortByCase", this);
        nicknames = Collections.synchronizedList(newNicknames);

        sort();
    }

    /**
     * Returns the size of the current nicklist.
     *
     * @return nicklist size
     */
    @Override
    public int getSize() {
        return nicknames.size();
    }

    /**
     * Returns the element at the specified place in the nicklist.
     *
     * @param index index of nick required
     *
     * @return nicklist entry requested
     */
    @Override
    public GroupChatUser getElementAt(final int index) {
        return nicknames.get(index);
    }

    /**
     * Sorts the nicklist based on settings in the Config.
     */
    public void sort() {
        synchronized (nicknames) {
            nicknames.sort(new NicklistComparator(sortByMode, sortByCase));
        }
        rerender();
    }

    /**
     * Replaces the entire nicklist with the arraylist specified.
     *
     * @param clients replacement nicklist
     *
     * @return boolean success
     */
    public boolean replace(final Collection<GroupChatUser> clients) {
        nicknames.clear();
        nicknames.addAll(clients);
        sort();

        return true;
    }

    /**
     * Adds the specified client to the nicklist.
     *
     * @param client client to add to the nicklist
     *
     * @return boolean success
     */
    public boolean add(final GroupChatUser client) {
        nicknames.add(client);
        sort();

        return true;
    }

    /**
     * Removes the specified client from the nicklist.
     *
     * @param client client to remove
     *
     * @return boolean success
     */
    public boolean remove(final GroupChatUser client) {

        final boolean returnValue = nicknames.remove(client);
        rerender();

        return returnValue;
    }

    /**
     * Removes the specified index from the nicklist.
     *
     * @param index index to remove
     *
     * @return ChannelClientInfo client removed
     */
    public GroupChatUser remove(final int index) {

        final GroupChatUser returnValue = nicknames.remove(index);
        rerender();

        return returnValue;
    }

    /**
     * Fires the model changed event forcing the model to re-render.
     */
    public void rerender() {
        fireContentsChanged(this, 0, nicknames.size());
    }

    @Override
    public void configChanged(final String domain, final String key) {
        switch (key) {
            case "sortByMode":
                sortByMode = config.getOptionBool("nicklist", "sortByMode");
                break;
            case "sortByCase":
                sortByCase = config.getOptionBool("nicklist", "sortByCase");
                break;
        }

        sort();
    }

}