/*
 * This file is part of fabric-loom, licensed under the MIT License (MIT).
 *
 * Copyright (c) 2016, 2017, 2018 FabricMC
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package net.fabricmc.loom.providers;

import java.io.File;
import java.net.URI;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.function.Consumer;

import com.google.common.collect.ImmutableMap;
import org.gradle.api.Project;

import net.fabricmc.loom.util.Constants;
import net.fabricmc.loom.util.DependencyProvider;

public class McpConfigProvider extends DependencyProvider {
	private File mcp;
	private File srg;

	public McpConfigProvider(Project project) {
		super(project);
	}

	@Override
	public void provide(DependencyInfo dependency, Consumer<Runnable> postPopulationScheduler) throws Exception {
		init(dependency.getDependency().getVersion());

		if (mcp.exists() && srg.exists()) {
			return; // No work for us to do here
		}

		Path mcpZip = dependency.resolveFile().orElseThrow(() -> new IllegalStateException("Could not resolve MCPConfig")).toPath();

		if (!mcp.exists()) {
			Files.copy(mcpZip, mcp.toPath());
		}

		if (!srg.exists()) {
			try (FileSystem fs = FileSystems.newFileSystem(new URI("jar:" + mcpZip.toUri()), ImmutableMap.of("create", false))) {
				Files.copy(fs.getPath("config", "joined.tsrg"), srg.toPath());
			}
		}
	}

	private void init(String version) {
		mcp = new File(getExtension().getUserCache(), "mcp-" + version + ".zip");
		srg = new File(getExtension().getUserCache(), "srg-" + version + ".tsrg");
	}

	public File getMcp() {
		return mcp;
	}

	public File getSrg() {
		return srg;
	}

	@Override
	public String getTargetConfig() {
		return Constants.MCP_CONFIG;
	}
}