/*
 *  The ManaPlus Client
 *  Copyright (C) 2016-2019  The ManaPlus Developers
 *  Copyright (C) 2019-2021  Andrei Karas
 *
 *  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 "unittests/unittests.h"

#include "configmanager.h"
#include "dirs.h"

#include "resources/image/image.h"

#include "resources/map/maplayer.h"

#include "debug.h"

TEST_CASE("MapLayer updateCache", "")
{
    Dirs::initRootDir();
    Dirs::initHomeDir();

    ConfigManager::initConfiguration();

    Image *const img1 = new Image(32, 32);
    Image *const img2 = new Image(32, 32);
    Image *const img3 = new Image(32, 32);
    MapLayer *layer = nullptr;

    SECTION("simple 1")
    {
        layer = new MapLayer("test",
            0, 0,
            1, 1,
            false,
            0,
            0);
        layer->setTile(0, 0, img1);
        TileInfo *const tiles = layer->getTiles();
        layer->updateCache(1, 1);
        REQUIRE(tiles[0].isEnabled == true);
        REQUIRE(tiles[0].width == 32);
        REQUIRE(tiles[0].count == 0);
        REQUIRE(tiles[0].nextTile == 0);
    }

    SECTION("simple 2")
    {
        layer = new MapLayer("test",
            0, 0,
            2, 1,
            false,
            0,
            0);
        layer->setTile(0, 0, img1);
        TileInfo *const tiles = layer->getTiles();
        layer->updateCache(2, 1);
        REQUIRE(tiles[0].isEnabled == true);
        REQUIRE(tiles[0].width == 32);
        REQUIRE(tiles[0].count == 0);
        REQUIRE(tiles[0].nextTile == 1);
        REQUIRE(tiles[1].isEnabled == false);
        REQUIRE(tiles[1].width == 0);
        REQUIRE(tiles[1].count == 0);
        REQUIRE(tiles[1].nextTile == 0);
    }

    SECTION("simple 3")
    {
        layer = new MapLayer("test",
            0, 0,
            2, 1,
            false,
            0,
            0);
        layer->setTile(0, 0, img1);
        layer->setTile(1, 0, img2);
        TileInfo *const tiles = layer->getTiles();
        layer->updateCache(2, 1);
        REQUIRE(tiles[0].isEnabled == true);
        REQUIRE(tiles[0].width == 32);
        REQUIRE(tiles[0].count == 0);
        REQUIRE(tiles[0].nextTile == 0);
        REQUIRE(tiles[1].isEnabled == true);
        REQUIRE(tiles[1].width == 32);
        REQUIRE(tiles[1].count == 0);
        REQUIRE(tiles[1].nextTile == 0);
    }

    SECTION("simple 4")
    {
        layer = new MapLayer("test",
            0, 0,
            2, 1,
            false,
            0,
            0);
        layer->setTile(0, 0, img1);
        layer->setTile(1, 0, img1);
        TileInfo *const tiles = layer->getTiles();
        layer->updateCache(2, 1);
        REQUIRE(tiles[0].isEnabled == true);
        REQUIRE(tiles[0].width == 64);
        REQUIRE(tiles[0].count == 1);
        REQUIRE(tiles[0].nextTile == 1);
        REQUIRE(tiles[1].isEnabled == true);
        REQUIRE(tiles[1].width == 32);
        REQUIRE(tiles[1].count == 0);
        REQUIRE(tiles[1].nextTile == 0);
    }

    SECTION("simple 4.2")
    {
        layer = new MapLayer("test",
            0, 0,
            3, 1,
            false,
            0,
            0);
        layer->setTile(0, 0, img1);
        layer->setTile(2, 0, img1);
        TileInfo *const tiles = layer->getTiles();
        layer->updateCache(3, 1);
        REQUIRE(tiles[0].isEnabled == true);
        REQUIRE(tiles[0].width == 32);
        REQUIRE(tiles[0].count == 0);
        REQUIRE(tiles[0].nextTile == 1);
        REQUIRE(tiles[1].isEnabled == false);
        REQUIRE(tiles[1].width == 0);
        REQUIRE(tiles[1].count == 0);
        REQUIRE(tiles[1].nextTile == 0);
        REQUIRE(tiles[2].isEnabled == true);
        REQUIRE(tiles[2].width == 32);
        REQUIRE(tiles[2].count == 0);
        REQUIRE(tiles[2].nextTile == 0);
    }

    SECTION("simple 5")
    {
        layer = new MapLayer("test",
            0, 0,
            3, 1,
            false,
            0,
            0);
        layer->setTile(0, 0, img1);
        layer->setTile(1, 0, img1);
        TileInfo *const tiles = layer->getTiles();
        layer->updateCache(3, 1);
        REQUIRE(tiles[0].isEnabled == true);
        REQUIRE(tiles[0].width == 64);
        REQUIRE(tiles[0].count == 1);
        REQUIRE(tiles[0].nextTile == 2);
        REQUIRE(tiles[1].isEnabled == true);
        REQUIRE(tiles[1].width == 32);
        REQUIRE(tiles[1].count == 0);
        REQUIRE(tiles[1].nextTile == 1);
        REQUIRE(tiles[2].isEnabled == false);
        REQUIRE(tiles[2].width == 0);
        REQUIRE(tiles[2].count == 0);
        REQUIRE(tiles[2].nextTile == 0);
    }

    SECTION("simple 6")
    {
        layer = new MapLayer("test",
            0, 0,
            3, 1,
            false,
            0,
            0);
        layer->setTile(0, 0, img1);
        layer->setTile(1, 0, img1);
        layer->setTile(2, 0, img2);
        TileInfo *const tiles = layer->getTiles();
        layer->updateCache(3, 1);
        REQUIRE(tiles[0].isEnabled == true);
        REQUIRE(tiles[0].width == 64);
        REQUIRE(tiles[0].count == 1);
        REQUIRE(tiles[0].nextTile == 1);
        REQUIRE(tiles[1].isEnabled == true);
        REQUIRE(tiles[1].width == 32);
        REQUIRE(tiles[1].count == 0);
        REQUIRE(tiles[1].nextTile == 0);
        REQUIRE(tiles[2].isEnabled == true);
        REQUIRE(tiles[2].width == 32);
        REQUIRE(tiles[2].count == 0);
        REQUIRE(tiles[2].nextTile == 0);
    }

    SECTION("simple 7")
    {
        layer = new MapLayer("test",
            0, 0,
            3, 1,
            false,
            0,
            0);
        layer->setTile(0, 0, img1);
        layer->setTile(1, 0, img1);
        layer->setTile(2, 0, img2);
        TileInfo *const tiles = layer->getTiles();
        tiles[0].isEnabled = false;
        layer->updateCache(3, 1);
        REQUIRE(tiles[0].isEnabled == false);
        REQUIRE(tiles[0].width == 0);
        REQUIRE(tiles[0].count == 0);
        REQUIRE(tiles[0].nextTile == 0);
        REQUIRE(tiles[1].isEnabled == true);
        REQUIRE(tiles[1].width == 32);
        REQUIRE(tiles[1].count == 0);
        REQUIRE(tiles[1].nextTile == 0);
        REQUIRE(tiles[2].isEnabled == true);
        REQUIRE(tiles[2].width == 32);
        REQUIRE(tiles[2].count == 0);
        REQUIRE(tiles[2].nextTile == 0);
    }

    SECTION("normal 1")
    {
        layer = new MapLayer("test",
            0, 0,
            100, 100,
            false,
            0,
            0);
        layer->setTile(1, 10, img1);
        layer->setTile(2, 10, img1);
        layer->setTile(3, 10, img1);
        layer->setTile(4, 10, img2);
        layer->setTile(5, 10, nullptr);
        layer->setTile(6, 10, img2);
        layer->setTile(7, 10, nullptr);
        layer->setTile(8, 10, nullptr);
        layer->setTile(9, 10, img2);
        layer->setTile(10, 10, img2);
        layer->setTile(11, 10, img3);
        layer->setTile(12, 10, nullptr);
        layer->setTile(13, 10, nullptr);
        layer->setTile(14, 10, nullptr);
        layer->setTile(15, 10, img1);
        layer->setTile(16, 10, img1);
        layer->setTile(17, 10, img1);
        TileInfo *const tiles = layer->getTiles();
        layer->updateCache(100, 100);

        REQUIRE(tiles[0 * 100 + 0].isEnabled == false);
        REQUIRE(tiles[0 * 100 + 0].width == 0);
        REQUIRE(tiles[0 * 100 + 0].count == 99);
        REQUIRE(tiles[0 * 100 + 0].nextTile == 99);

        REQUIRE(tiles[0 * 100 + 1].isEnabled == false);
        REQUIRE(tiles[0 * 100 + 1].width == 0);
        REQUIRE(tiles[0 * 100 + 1].count == 98);
        REQUIRE(tiles[0 * 100 + 1].nextTile == 98);

        REQUIRE(tiles[10 * 100 + 0].isEnabled == false);
        REQUIRE(tiles[10 * 100 + 0].width == 0);
        REQUIRE(tiles[10 * 100 + 0].count == 0);
        REQUIRE(tiles[10 * 100 + 0].nextTile == 0);

        REQUIRE(tiles[10 * 100 + 1].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 1].width == 96);
        REQUIRE(tiles[10 * 100 + 1].count == 2);
        REQUIRE(tiles[10 * 100 + 1].nextTile == 2);

        REQUIRE(tiles[10 * 100 + 2].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 2].width == 64);
        REQUIRE(tiles[10 * 100 + 2].count == 1);
        REQUIRE(tiles[10 * 100 + 2].nextTile == 1);

        REQUIRE(tiles[10 * 100 + 3].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 3].width == 32);
        REQUIRE(tiles[10 * 100 + 3].count == 0);
        REQUIRE(tiles[10 * 100 + 3].nextTile == 0);

        REQUIRE(tiles[10 * 100 + 4].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 4].width == 32);
        REQUIRE(tiles[10 * 100 + 4].count == 0);
        REQUIRE(tiles[10 * 100 + 4].nextTile == 1);

        REQUIRE(tiles[10 * 100 + 5].isEnabled == false);
        REQUIRE(tiles[10 * 100 + 5].width == 0);
        REQUIRE(tiles[10 * 100 + 5].count == 0);
        REQUIRE(tiles[10 * 100 + 5].nextTile == 0);

        REQUIRE(tiles[10 * 100 + 6].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 6].width == 32);
        REQUIRE(tiles[10 * 100 + 6].count == 0);
        REQUIRE(tiles[10 * 100 + 6].nextTile == 2);

        REQUIRE(tiles[10 * 100 + 7].isEnabled == false);
        REQUIRE(tiles[10 * 100 + 7].width == 0);
        REQUIRE(tiles[10 * 100 + 7].count == 1);
        REQUIRE(tiles[10 * 100 + 7].nextTile == 1);

        REQUIRE(tiles[10 * 100 + 8].isEnabled == false);
        REQUIRE(tiles[10 * 100 + 8].width == 0);
        REQUIRE(tiles[10 * 100 + 8].count == 0);
        REQUIRE(tiles[10 * 100 + 8].nextTile == 0);

        REQUIRE(tiles[10 * 100 + 9].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 9].width == 64);
        REQUIRE(tiles[10 * 100 + 9].count == 1);
        REQUIRE(tiles[10 * 100 + 9].nextTile == 1);

        REQUIRE(tiles[10 * 100 + 10].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 10].width == 32);
        REQUIRE(tiles[10 * 100 + 10].count == 0);
        REQUIRE(tiles[10 * 100 + 10].nextTile == 0);

        REQUIRE(tiles[10 * 100 + 11].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 11].width == 32);
        REQUIRE(tiles[10 * 100 + 11].count == 0);
        REQUIRE(tiles[10 * 100 + 11].nextTile == 3);

        REQUIRE(tiles[10 * 100 + 12].isEnabled == false);
        REQUIRE(tiles[10 * 100 + 12].width == 0);
        REQUIRE(tiles[10 * 100 + 12].count == 2);
        REQUIRE(tiles[10 * 100 + 12].nextTile == 2);

        REQUIRE(tiles[10 * 100 + 13].isEnabled == false);
        REQUIRE(tiles[10 * 100 + 13].width == 0);
        REQUIRE(tiles[10 * 100 + 13].count == 1);
        REQUIRE(tiles[10 * 100 + 13].nextTile == 1);

        REQUIRE(tiles[10 * 100 + 14].isEnabled == false);
        REQUIRE(tiles[10 * 100 + 14].width == 0);
        REQUIRE(tiles[10 * 100 + 14].count == 0);
        REQUIRE(tiles[10 * 100 + 14].nextTile == 0);

        REQUIRE(tiles[10 * 100 + 15].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 15].width == 96);
        REQUIRE(tiles[10 * 100 + 15].count == 2);
        REQUIRE(tiles[10 * 100 + 15].nextTile == 84);

        REQUIRE(tiles[10 * 100 + 16].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 16].width == 64);
        REQUIRE(tiles[10 * 100 + 16].count == 1);
        REQUIRE(tiles[10 * 100 + 16].nextTile == 83);

        REQUIRE(tiles[10 * 100 + 17].isEnabled == true);
        REQUIRE(tiles[10 * 100 + 17].width == 32);
        REQUIRE(tiles[10 * 100 + 17].count == 0);
        REQUIRE(tiles[10 * 100 + 17].nextTile == 82);
    }

    SECTION("normal2")
    {
        const int maxX = 100;
        const int maxY = 100;
        layer = new MapLayer("test",
            0, 0,
            maxX, maxY,
            false,
            0,
            0);
        TileInfo *const tiles = layer->getTiles();
        for (int x = 0; x < maxX; x ++)
        {
            for (int y = 0; y < maxY; y ++)
            {
                layer->setTile(x, y, img1);
                tiles[y * maxX + x].isEnabled = false;
            }
        }
        tiles[10 * maxX + 41].isEnabled = true;
        layer->updateCache(maxX, maxY);

        REQUIRE(tiles[10 * maxX + 0].isEnabled == false);
        REQUIRE(tiles[10 * maxX + 0].width == 0);
        REQUIRE(tiles[10 * maxX + 0].count == 40);
        REQUIRE(tiles[10 * maxX + 0].nextTile == 40);

        REQUIRE(tiles[10 * maxX + 1].isEnabled == false);
        REQUIRE(tiles[10 * maxX + 1].width == 0);
        REQUIRE(tiles[10 * maxX + 1].count == 39);
        REQUIRE(tiles[10 * maxX + 1].nextTile == 39);
    }

    delete layer;
    delete img1;
    delete img2;
    delete img3;
}
