/* Copyright (c) 2016 Jesper Öqvist <jesper@llbit.se>
 *
 * This file is part of Chunky.
 *
 * Chunky 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 3 of the License, or
 * (at your option) any later version.
 *
 * Chunky 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 Chunky.  If not, see <http://www.gnu.org/licenses/>.
 */
package se.llbit.chunky.main;

import org.junit.Test;
import se.llbit.chunky.renderer.RayTracerFactory;
import se.llbit.chunky.renderer.RenderContextFactory;
import se.llbit.chunky.renderer.scene.Scene;
import se.llbit.chunky.renderer.scene.SceneFactory;
import se.llbit.chunky.resources.Texture;
import se.llbit.chunky.ui.render.RenderControlsTabTransformer;
import se.llbit.chunky.world.Block;

import java.util.Collections;

import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;

public class PluginApiTest {
  @Test public void testSetBlock1() {
    Block newGrass = new Block(Block.GRASS_ID, "foo", Texture.EMPTY_TEXTURE);
    Block.set(Block.GRASS_ID, newGrass);
    assertSame(newGrass, Block.get(Block.GRASS_ID));
  }

  @Test public void testSetBlock2() {
    // This will not work well in the renderer, but it is allowed.
    Block.set(Block.STONE_ID, Block.AIR);
    assertSame(Block.AIR, Block.get(Block.STONE_ID));
  }

  @Test(expected = IllegalArgumentException.class)
  public void testSetBlockFail1() {
    Block.set(Block.GRASS_ID, null);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testSetBlockFail2() {
    // Illegal block ID.
    Block.set(-1, Block.AIR);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testSetBlockFail3() {
    // Illegal block ID.
    Block.set(256, Block.AIR);
  }

  @Test public void testSetRenderContextFactory() {
    Chunky chunky = new Chunky(ChunkyOptions.getDefaults());
    RenderContextFactory myFactory = chunky1 -> null;
    chunky.setRenderContextFactory(myFactory);
    assertSame(myFactory, chunky.getRenderContextFactory());
  }

  @Test public void testSetSceneFactory() {
    Chunky chunky = new Chunky(ChunkyOptions.getDefaults());
    SceneFactory myFactory = new SceneFactory() {
      @Override public Scene newScene() {
        return null;
      }

      @Override public Scene copyScene(Scene scene) {
        return null;
      }
    };
    chunky.setSceneFactory(myFactory);
    assertSame(myFactory, chunky.getSceneFactory());
  }

  @Test public void testSetPreviewRayTracerFactory() {
    Chunky chunky = new Chunky(ChunkyOptions.getDefaults());
    RayTracerFactory myFactory = () -> null;
    chunky.setPreviewRayTracerFactory(myFactory);
    assertSame(myFactory, chunky.getPreviewRayTracerFactory());
    assertNotSame(myFactory, chunky.getRayTracerFactory());
  }

  @Test public void testSetRayTracerFactory() {
    Chunky chunky = new Chunky(ChunkyOptions.getDefaults());
    RayTracerFactory myFactory = () -> null;
    chunky.setRayTracerFactory(myFactory);
    assertSame(myFactory, chunky.getRayTracerFactory());
    assertNotSame(myFactory, chunky.getPreviewRayTracerFactory());
  }

  @Test public void testSetRenderControlsTabTransformer() {
    Chunky chunky = new Chunky(ChunkyOptions.getDefaults());
    RenderControlsTabTransformer transformer = tabs -> Collections.emptyList();
    chunky.setRenderControlsTabTransformer(transformer);
    assertSame(transformer, chunky.getRenderControlsTabTransformer());
  }
}