/*
 *  The ManaPlus Client
 *  Copyright (C) 2008-2009  The Mana World Development Team
 *  Copyright (C) 2009-2010  The Mana Developers
 *  Copyright (C) 2011-2018  The ManaPlus Developers
 *
 *  This file is part of The ManaPlus 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/db/statuseffectdb.h"

#include "configuration.h"
#include "settings.h"
#include "statuseffect.h"

#include "utils/checkutils.h"

#include "resources/beingcommon.h"

#include "debug.h"

namespace
{
    typedef std::map<int, StatusEffect *> IdToEffectMap[2];
    bool mLoaded = false;
    int fakeId = 10000;
    IdToEffectMap statusEffects;
    OptionsMap optionToIdMap;
    OptionsMap opt1ToIdMap;
    OptionsMap opt2ToIdMap;
    OptionsMap opt3ToIdMap;

    OptionsMap blockIdToIdMap;
}  // namespace

int StatusEffectDB::blockIdToId(const int blockIndex)
{
    if (blockIdToIdMap.find(blockIndex) == blockIdToIdMap.end())
        return -1;
    return blockIdToIdMap[blockIndex];
}

StatusEffect *StatusEffectDB::getStatusEffect(const int index,
                                              const Enable enabling)
{
    std::map<int, StatusEffect *> &effects
        = statusEffects[enabling == Enable_true];
    const std::map<int, StatusEffect *>::iterator it = effects.find(index);
    if (it != effects.end())
        return (*it).second;
    reportAlways("Missing status effect: %d",
        index);
    return nullptr;
}

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

    logger->log1("Initializing status effect database...");

    loadXmlFile(paths.getStringValue("statusEffectsFile"), SkipError_false);
    loadXmlFile(paths.getStringValue("statusEffectsPatchFile"),
        SkipError_true);
    loadXmlDir("statusEffectsPatchDir", loadXmlFile);

    if (!blockIdToIdMap.empty())
    {
        reportAlways("Detected legacy attribute block-id "
            "in status-effects.xml");
    }
    mLoaded = true;
}

void StatusEffectDB::loadXmlFile(const std::string &fileName,
                                 const SkipError skipError)
{
    XML::Document doc(fileName, UseVirtFs_true, skipError);
    XmlNodeConstPtrConst rootNode = doc.rootNode();

    if ((rootNode == nullptr) || !xmlNameEqual(rootNode, "status-effects"))
    {
        logger->log("Error loading status effects file: " + fileName);
        return;
    }

    for_each_xml_child_node(node, rootNode)
    {
        if (xmlNameEqual(node, "include"))
        {
            const std::string incName = XML::getProperty(node, "name", "");
            if (!incName.empty())
                loadXmlFile(incName, skipError);
            continue;
        }
        else if (!xmlNameEqual(node, "status-effect"))
        {
            continue;
        }

        int id = XML::getProperty(node, "id", -1);

        // legacy field. Only for clients 1.6.3.12 and older
        const int blockId = XML::getProperty(node, "block-id", -1);
        if (id >= 0 && blockId >= 0)
            blockIdToIdMap[blockId] = id;

        if (id == -1)
        {
            id = fakeId;
            fakeId ++;
        }
        const int option = XML::getProperty(node, "option", 0);
        const int opt1 = XML::getProperty(node, "opt1", 0);
        const int opt2 = XML::getProperty(node, "opt2", 0);
        const int opt3 = XML::getProperty(node, "opt3", 0);
        if (option != 0)
        {
            optionToIdMap[option] = id;
            settings.legacyEffects = false;
        }
        if (opt1 != 0)
        {
            opt1ToIdMap[opt1] = id;
            settings.legacyEffects = false;
        }
        if (opt2 != 0)
        {
            opt2ToIdMap[opt2] = id;
            settings.legacyEffects = false;
        }
        if (opt3 != 0)
        {
            opt3ToIdMap[opt3] = id;
            settings.legacyEffects = false;
        }

        StatusEffect *startEffect = statusEffects[1][id];
        StatusEffect *endEffect = statusEffects[0][id];
        const std::string name = XML::getProperty(node, "name", "");
        const std::string name2 = XML::langProperty(node, "name", "");
        if (startEffect == nullptr)
            startEffect = new StatusEffect;
        if (endEffect == nullptr)
            endEffect = new StatusEffect;

        startEffect->mName = name2;
        startEffect->mIsPoison =
            (name == paths.getStringValue("poisonEffectName"));
        startEffect->mIsCart =
            (name == paths.getStringValue("cartEffectName"));
        startEffect->mIsRiding =
            (name == paths.getStringValue("ridingEffectName"));
        startEffect->mIsTrickDead =
            (name == paths.getStringValue("trickDeadEffectName"));
        startEffect->mIsPostDelay =
            (name == paths.getStringValue("postDelayName"));
        startEffect->mMessage = XML::getProperty(
            node, "start-message", "");
        startEffect->mSFXEffect = XML::getProperty(
            node, "start-audio", "");
        startEffect->mStartParticleEffect = XML::getProperty(
            node, "start-particle", "");
        startEffect->mParticleEffect = XML::getProperty(
            node, "particle", "");

        startEffect->mIcon = XML::getProperty(node, "icon", "");
        startEffect->mAction = XML::getProperty(node, "action", "");
        startEffect->mIsPersistent = (XML::getProperty(
            node, "persistent-particle-effect", "no")) != "no";

        endEffect->mName = startEffect->mName;
        endEffect->mIsPoison = startEffect->mIsPoison;
        endEffect->mIsCart = startEffect->mIsCart;
        endEffect->mIsRiding = startEffect->mIsRiding;
        endEffect->mIsTrickDead = startEffect->mIsTrickDead;
        endEffect->mIsPostDelay = startEffect->mIsPostDelay;
        endEffect->mMessage = XML::getProperty(node, "end-message", "");
        endEffect->mSFXEffect = XML::getProperty(node, "end-audio", "");
        endEffect->mStartParticleEffect = XML::getProperty(
            node, "end-particle", "");

        statusEffects[1][id] = startEffect;
        statusEffects[0][id] = endEffect;
    }
}

static void unloadMap(std::map<int, StatusEffect *> &map)
{
    for (std::map<int, StatusEffect *>::iterator it = map.begin();
         it != map.end(); ++it)
    {
        delete (*it).second;
    }

    map.clear();
}

void StatusEffectDB::unload()
{
    if (!mLoaded)
        return;

    logger->log1("Unloading status effect database...");

    fakeId = 10000;
    unloadMap(statusEffects[0]);
    unloadMap(statusEffects[1]);

    optionToIdMap.clear();
    opt1ToIdMap.clear();
    opt2ToIdMap.clear();
    opt3ToIdMap.clear();
    blockIdToIdMap.clear();

    mLoaded = false;
}

const OptionsMap& StatusEffectDB::getOptionMap()
{
    return optionToIdMap;
}

const OptionsMap& StatusEffectDB::getOpt1Map()
{
    return opt1ToIdMap;
}

const OptionsMap& StatusEffectDB::getOpt2Map()
{
    return opt2ToIdMap;
}

const OptionsMap& StatusEffectDB::getOpt3Map()
{
    return opt3ToIdMap;
}