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package games.rednblack.editor.renderer.utils;

/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

import com.badlogic.gdx.assets.AssetDescriptor;
import com.badlogic.gdx.assets.AssetManager;
import com.badlogic.gdx.assets.loaders.AssetLoader;
import com.badlogic.gdx.assets.loaders.AsynchronousAssetLoader;
import com.badlogic.gdx.assets.loaders.FileHandleResolver;
import com.badlogic.gdx.assets.loaders.SkinLoader;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.TextureAtlas;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.utils.Array;
import com.badlogic.gdx.utils.ObjectMap;
import com.badlogic.gdx.utils.ObjectMap.Entry;

/** {@link AssetLoader} for {@link Skin} instances. All {@link Texture} and {@link BitmapFont} instances will be loaded as
 * dependencies. Passing a {@link SkinLoader.SkinParameter} allows the exact name of the texture associated with the skin to be specified.
 * Otherwise the skin texture is looked up just as with a call to {@link Skin#Skin(FileHandle)}. A
 * {@link SkinLoader.SkinParameter} also allows named resources to be set that will be added to the skin before loading the json file,
 * meaning that they can be referenced from inside the json file itself. This is useful for dynamic resources such as a BitmapFont
 * generated through FreeTypeFontGenerator.
 * @author Nathan Sweet */
public class H2DSkinLoader extends AsynchronousAssetLoader {
    public H2DSkinLoader (FileHandleResolver resolver) {
        super(resolver);
    }

    @Override
    public Array getDependencies (String fileName, FileHandle file, SkinLoader.SkinParameter parameter) {
        Array deps = new Array();
        if (parameter == null || parameter.textureAtlasPath == null)
            deps.add(new AssetDescriptor(file.pathWithoutExtension() + ".atlas", TextureAtlas.class));
        else if (parameter.textureAtlasPath != null) deps.add(new AssetDescriptor(parameter.textureAtlasPath, TextureAtlas.class));
        return deps;
    }

    @Override
    public void loadAsync (AssetManager manager, String fileName, FileHandle file, SkinLoader.SkinParameter parameter) {
    }

    @Override
    public Skin loadSync (AssetManager manager, String fileName, FileHandle file, SkinLoader.SkinParameter parameter) {
        String textureAtlasPath = file.pathWithoutExtension() + ".atlas";
        ObjectMap resources = null;
        if (parameter != null) {
            if (parameter.textureAtlasPath != null) {
                textureAtlasPath = parameter.textureAtlasPath;
            }
            if (parameter.resources != null) {
                resources = parameter.resources;
            }
        }
        TextureAtlas atlas = manager.get(textureAtlasPath, TextureAtlas.class);
        Skin skin = newSkin(atlas);
        if (resources != null) {
            for (Entry entry : resources.entries()) {
                if (entry.value instanceof BitmapFont) {
                    skin.add(entry.key, entry.value, BitmapFont.class);
                } else {
                    skin.add(entry.key, entry.value);
                }
            }
        }
        skin.load(file);
        return skin;
    }

    /** Override to allow subclasses of Skin to be loaded or the skin instance to be configured.
     * @param atlas The TextureAtlas that the skin will use.
     * @return A new Skin (or subclass of Skin) instance based on the provided TextureAtlas. */
    protected Skin newSkin (TextureAtlas atlas) {
        return new Skin(atlas);
    }
}