/**
 * Copyright (C) 2018-2021 Christian Pierre MOMON <cmomon@april.org>
 *
 * This file is part of (April) Hebdobot.
 *
 * Hebdobot is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Hebdobot is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Hebdobot.  If not, see <http://www.gnu.org/licenses/>
 */
package org.april.hebdobot.bot.hooks;

import java.util.ArrayList;
import java.util.Iterator;

import org.april.hebdobot.HebdobotException;
import org.april.hebdobot.bot.Hebdobot;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import fr.devinsy.strings.StringList;

/**
 * The class Hooker, a hook manager.
 */
public class Hooker
{
    private static final Logger logger = LoggerFactory.getLogger(Hooker.class);

    private ArrayList<Hook> hooks;

    /**
     * Instantiates a new hook manager.
     */
    public Hooker()
    {
        this.hooks = new ArrayList<>(30);
    }

    /**
     * Adds the.
     *
     * @param hook
     *            the hook
     */
    public void add(final Hook hook)
    {
        if (hook != null)
        {
            this.hooks.add(hook);
        }
    }

    /**
     * Attempt help.
     *
     * @param message
     *            the message
     * @return the string list
     * @throws HebdobotException
     *             the hebdobot exception
     */
    public StringList attemptHelp(final String message) throws HebdobotException
    {
        StringList result;

        boolean ended = false;
        Iterator<Hook> iterator = this.hooks.iterator();
        result = null;
        while (!ended)
        {
            if (iterator.hasNext())
            {
                Hook hook = iterator.next();
                StringList help = hook.attemptHelp(message);

                if (help != null)
                {
                    ended = true;
                    result = help;
                }
            }
            else
            {
                ended = true;
                result = null;
            }
        }

        //
        return result;
    }

    /**
     * Attempt process.
     *
     * @param bot
     *            the bot
     * @param channel
     *            the channel
     * @param sender
     *            the sender
     * @param login
     *            the login
     * @param hostname
     *            the hostname
     * @param message
     *            the message
     * @return true, if successful
     * @throws HebdobotException
     *             the hebdobot exception
     */
    public boolean attemptProcess(final Hebdobot bot, final String channel, final String sender, final String login, final String hostname,
            final String message) throws HebdobotException
    {
        boolean result;

        boolean ended = false;
        Iterator<Hook> iterator = this.hooks.iterator();
        result = false;
        while (!ended)
        {
            if (iterator.hasNext())
            {
                Hook hook = iterator.next();
                boolean hookResult = hook.attemptProcess(bot, channel, sender, login, hostname, message);

                if (hookResult)
                {
                    ended = true;
                    result = true;
                }
            }
            else
            {
                ended = true;
                result = false;
            }
        }

        //
        return result;
    }

    /**
     * Clear.
     */
    public void clear()
    {
        this.hooks.clear();
    }

    public StringList getHookNames()
    {
        StringList result;

        result = new StringList(this.hooks.size());

        for (Hook hook : this.hooks)
        {
            result.add(hook.getName());
        }

        //
        return result;
    }

    /**
     * Size.
     *
     * @return the int
     */
    public int size()
    {
        int result;

        result = this.hooks.size();

        //
        return result;
    }
}