hebdobot/src/main/java/fr/imirhil/april/hebdobot/review/Review.java

/**
 * Copyright (C) 2011-2013 Nicolas Vinot <aeris@imirhil.fr>
 * Copyright (C) 2017 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 fr.imirhil.april.hebdobot.review;

import java.util.Collection;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;

import org.apache.commons.lang.StringUtils;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;

import fr.imirhil.april.hebdobot.Context;
import fr.imirhil.april.hebdobot.xml.UserAlias;

public class Review
{
    private static final int LENGTH = 80;

    private static final UserAlias USER_ALIAS = Context.getBean(UserAlias.class);
    private final Set<String> participants = new HashSet<String>();
    private final List<IndividualTopic> individualTopics = new LinkedList<IndividualTopic>();
    private final List<CollectiveTopic> collectiveTopics = new LinkedList<CollectiveTopic>();
    private Topic currentTopic;
    private final List<Message> messages = new LinkedList<Message>();
    private final String owner;

    public Review(final String owner)
    {
        this.owner = owner;
    }

    public void add(final Message message)
    {
        if (this.currentTopic != null)
        {
            this.participants.add(message.getAuthor());
            this.currentTopic.add(message);
        }
        this.addRaw(message);
    }

    public void addRaw(final Message message)
    {
        this.messages.add(message);
    }

    public void begin(final CollectiveTopic topic)
    {
        this.collectiveTopics.add(topic);
        this.currentTopic = topic;
    }

    public void begin(final IndividualTopic topic)
    {
        this.individualTopics.add(topic);
        this.currentTopic = topic;
    }

    public Topic getCurrentTopic()
    {
        return this.currentTopic;
    }

    public String getOwner()
    {
        return this.owner;
    }

    public Collection<String> getParticipants()
    {
        final Collection<String> reviewers = new HashSet<String>();
        for (final Topic topic : this.individualTopics)
        {
            reviewers.addAll(topic.getParticipants());
        }
        for (final Topic topic : this.collectiveTopics)
        {
            reviewers.addAll(topic.getParticipants());
        }
        return reviewers;
    }

    public boolean isOwner(final String name)
    {
        return this.owner.equalsIgnoreCase(name);
    }

    @Override
    public String toString()
    {
        final StringBuffer buffer = new StringBuffer();
        addLine(buffer, '=');
        addCenter(buffer, "Revue de la semaine en cours");
        addEmpty(buffer);
        addCenter(buffer, DateTimeFormat.fullDate().print(new DateTime()));
        addLine(buffer, '=');
        addEmpty(buffer);
        addEmpty(buffer);

        addLine(buffer, '=');
        addEmpty(buffer);
        addCenter(buffer, "Participants", '-');
        for (final String participant : this.participants)
        {
            addChunk(buffer, "* " + USER_ALIAS.getRealName(participant) + "\n");
        }

        if (!this.individualTopics.isEmpty())
        {
            for (final String participant : this.participants)
            {
                addEmpty(buffer);
                addLine(buffer, '=');
                addEmpty(buffer);
                addCenter(buffer, USER_ALIAS.getRealName(participant), '-');
                for (final IndividualTopic topic : this.individualTopics)
                {
                    if (topic.hasParticipant(participant))
                    {
                        addEmpty(buffer);
                        add(buffer, getTopic(topic));
                        addEmpty(buffer);
                        for (final Message message : topic.getMessages(participant))
                        {
                            addChunk(buffer, "* " + message.getContent() + "\n");
                        }
                    }
                }
            }
        }

        if (!this.collectiveTopics.isEmpty())
        {
            for (final CollectiveTopic topic : this.collectiveTopics)
            {
                addEmpty(buffer);
                addLine(buffer, '=');
                addCenter(buffer, topic.getTitle());
                addLine(buffer, '=');
                addEmpty(buffer);
                for (final Message message : topic.getMessages())
                {
                    addChunk(buffer, "* " + message.getAuthor() + " : " + message.getContent() + "\n");
                }
            }
        }

        addEmpty(buffer);
        addCenter(buffer, "Log IRC brut");
        addEmpty(buffer);
        for (final Message message : this.messages)
        {
            addChunk(buffer, "* " + message.getAuthor() + " : " + message.getContent() + "\n");
        }

        return buffer.toString();
    }

    private static void add(final StringBuffer buffer, final String content)
    {
        buffer.append(content);
    }

    private static void addCenter(final StringBuffer buffer, final String content)
    {
        addCenter(buffer, content, ' ');
    }

    private static void addCenter(final StringBuffer buffer, final String content, final char c)
    {
        buffer.append(getLine(content, c));
    }

    private static void addChunk(final StringBuffer buffer, final String content)
    {
        add(buffer, chunk(content));
    }

    private static void addEmpty(final StringBuffer buffer)
    {
        buffer.append("\n");
    }

    private static void addLine(final StringBuffer buffer, final char c)
    {
        buffer.append(getLine(c));
    }

    private static String chunk(final String content)
    {
        return chunk(content, LENGTH);
    }

    private static String chunk(final String content, final int length)
    {
        final String[] words = content.split(" ");
        final StringBuffer result = new StringBuffer();
        StringBuffer current = new StringBuffer();

        for (final String word : words)
        {
            if (current.length() + word.length() > length)
            {
                if (result.length() > 0)
                {
                    result.append("\n");
                }
                result.append(current);
                current = new StringBuffer(word);
            }
            else
            {
                if (current.length() > 0)
                {
                    current.append(" ");
                }
                current.append(word);
            }
        }

        if (current.length() > 0)
        {
            if (result.length() > 0)
            {
                result.append("\n");
            }
            result.append(current);
        }

        return result.toString();
    }

    private static String getLine(final Character c)
    {
        return StringUtils.repeat(c.toString(), LENGTH) + "\n";
    }

    private static String getLine(final String content, final char c)
    {
        return StringUtils.center(" " + content + " ", LENGTH, c) + "\n";
    }

    private static String getTopic(final Topic topic)
    {
        return "===  " + topic.getTitle() + "  ===\n";
    }

}