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/*
 *  Emote database
 *  Copyright (C) 2009  Aethyra Development Team
 *
 *  This file is part of The Mana Client.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "resources/emotedb.h"

#include "animatedsprite.h"
#include "log.h"

#include "utils/xml.h"

namespace
{
    EmoteInfos mEmoteInfos;
    EmoteInfo mUnknown;
    bool mLoaded = false;
    int mLastEmote = 0;
}

void EmoteDB::load()
{
    if (mLoaded)
        unload();

    mLastEmote = 0;

    EmoteSprite *unknownSprite = new EmoteSprite;
    unknownSprite->sprite = AnimatedSprite::load("error.xml");
    unknownSprite->name = "unknown";
    mUnknown.sprites.push_back(unknownSprite);

    logger->log("Initializing emote database...");

    XML::Document doc("emotes.xml");
    xmlNodePtr rootNode = doc.rootNode();

    if (!rootNode || !xmlStrEqual(rootNode->name, BAD_CAST "emotes"))
    {
        logger->log("Emote Database: Error while loading emotes.xml!");
        return;
    }

    //iterate <emote>s
    for_each_xml_child_node(emoteNode, rootNode)
    {
        if (!xmlStrEqual(emoteNode->name, BAD_CAST "emote"))
            continue;

        int id = XML::getProperty(emoteNode, "id", -1);
        if (id == -1)
        {
            logger->log("Emote Database: Emote with missing ID in emotes.xml!");
            continue;
        }

        EmoteInfo *currentInfo = new EmoteInfo;

        for_each_xml_child_node(spriteNode, emoteNode)
        {
            if (xmlStrEqual(spriteNode->name, BAD_CAST "sprite"))
            {
                EmoteSprite *currentSprite = new EmoteSprite;
                std::string file = "graphics/sprites/" + (std::string)
                            (const char*) spriteNode->xmlChildrenNode->content;
                currentSprite->sprite = AnimatedSprite::load(file,
                                XML::getProperty(spriteNode, "variant", 0));
                currentInfo->sprites.push_back(currentSprite);
            }
            else if (xmlStrEqual(spriteNode->name, BAD_CAST "particlefx"))
            {
                std::string particlefx = (const char*) spriteNode->xmlChildrenNode->content;
                currentInfo->particles.push_back(particlefx);
            }
        }
        mEmoteInfos[id] = currentInfo;
        if (id > mLastEmote)
            mLastEmote = id;
    }

    mLoaded = true;
}

void EmoteDB::unload()
{
    for (EmoteInfos::const_iterator i = mEmoteInfos.begin();
         i != mEmoteInfos.end();
         i++)
    {
        while (!i->second->sprites.empty())
        {
            delete i->second->sprites.front()->sprite;
            delete i->second->sprites.front();
            i->second->sprites.pop_front();
        }
        delete i->second;
    }

    mEmoteInfos.clear();

    while (!mUnknown.sprites.empty())
    {
        delete mUnknown.sprites.front()->sprite;
        delete mUnknown.sprites.front();
        mUnknown.sprites.pop_front();
    }

    mLoaded = false;
}

const EmoteInfo *EmoteDB::get(int id)
{
    EmoteInfos::const_iterator i = mEmoteInfos.find(id);

    if (i == mEmoteInfos.end())
    {
        logger->log("EmoteDB: Warning, unknown emote ID %d requested", id);
        return &mUnknown;
    }
    else
    {
        return i->second;
    }
}

const AnimatedSprite *EmoteDB::getAnimation(int id)
{
    const EmoteInfo *info = get(id);
    return info->sprites.front()->sprite;
}

const int &EmoteDB::getLast()
{
    return mLastEmote;
}