/*
 *  The ManaPlus Client
 *  Copyright (C) 2013-2020  The ManaPlus Developers
 *  Copyright (C) 2020-2023  The ManaVerse 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/palettedb.h"

#include "configuration.h"

#include "fs/virtfs/tools.h"

#include "utils/checkutils.h"

#include "resources/dye/dyecolor.h"

#include "debug.h"

namespace
{
    bool mLoaded = false;
    std::map<std::string, DyeColor> mColors;
}  // namespace

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

    logger->log1("Initializing palette database...");
    loadPalette();
}

void PaletteDB::loadPalette()
{
    mLoaded = true;
    StringVect lines;
    VirtFs::loadTextFile(paths.getStringValue("palettesDir") +
        paths.getStringValue("defaultPaletteFile"),
        lines);
    StringVectCIter it = lines.begin();
    if (it == lines.end())
    {
        logger->log("missing GIMP palette file");
        return;
    }
    if (*it != "GIMP Palette")
    {
        reportAlways("wrong GIMP palette file")
        return;
    }
    ++ it;
    // skip header
    while (it != lines.end())
    {
        const std::string line = *it;
        if (!line.empty() && line[0] == '#')
            break;
        ++ it;
    }

    char name[101];

    // process colors and ignore commets
    while (it != lines.end())
    {
        const std::string line = *it;
        ++ it;

        if (line.empty() || line[0] == '#')
            continue;

        unsigned int r;
        unsigned int g;
        unsigned int b;

        if (sscanf(line.c_str(), "%10u %10u %10u\t%100s",
            &r, &g, &b, name) == 4)
        {
            name[100] = 0;
            mColors[name] = DyeColor(CAST_U8(r),
                CAST_U8(g),
                CAST_U8(b));
        }
    }
}

void PaletteDB::unload()
{
    logger->log1("Unloading palette database...");
    mColors.clear();
}

const DyeColor *PaletteDB::getColor(const std::string &name)
{
    const std::map<std::string, DyeColor>::const_iterator it =
        mColors.find(name);
    if (it != mColors.end())
        return &(*it).second;
    return nullptr;
}