fabric-loom/src/main/java/net/fabricmc/loom/task/GenVsCodeProjectTask.java

/*
 * 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.task;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import net.fabricmc.loom.LoomGradleExtension;
import net.fabricmc.loom.util.RunConfig;
import org.apache.commons.io.FileUtils;
import org.gradle.api.tasks.TaskAction;

import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;

//Recommended vscode plugins:
// https://marketplace.visualstudio.com/items?itemName=redhat.java
// https://marketplace.visualstudio.com/items?itemName=vscjava.vscode-java-debug
// https://marketplace.visualstudio.com/items?itemName=vscjava.vscode-java-pack
public class GenVsCodeProjectTask extends DefaultLoomTask {

    @TaskAction
    public void genRuns() {
        LoomGradleExtension extension = getProject().getExtensions().getByType(LoomGradleExtension.class);
        File projectDir = getProject().file(".vscode");
        if (!projectDir.exists()) {
            projectDir.mkdir();
        }
        File launchJson = new File(projectDir, "launch.json");
        if (launchJson.exists()) {
            launchJson.delete();
        }

        VsCodeLaunch launch = new VsCodeLaunch();
        launch.add(RunConfig.clientRunConfig(getProject()));
        launch.add(RunConfig.serverRunConfig(getProject()));

        Gson gson = new GsonBuilder().setPrettyPrinting().create();
        String json = gson.toJson(launch);

        try {
            FileUtils.writeStringToFile(launchJson, json, StandardCharsets.UTF_8);
        } catch (IOException e) {
            throw new RuntimeException("Failed to write launch.json", e);
        }

        File runDir = new File(getProject().getRootDir(), extension.runDir);
        if (!runDir.exists()) {
            runDir.mkdirs();
        }
    }

    private static class VsCodeLaunch {
        public String version = "0.2.0";
        public List<VsCodeConfiguration> configurations = new ArrayList<>();

        public void add(RunConfig runConfig) {
            configurations.add(new VsCodeConfiguration(runConfig));
        }
    }

    private static class VsCodeConfiguration {
        public String type = "java";
        public String name;
        public String request = "launch";
        public String cwd = "${workspaceFolder}/run";
        public String console = "internalConsole";
        public boolean stopOnEntry = false;
        public String mainClass;
        public String vmArgs;
        public String args;

        public VsCodeConfiguration(RunConfig runConfig) {
            this.name = runConfig.configName;
            this.mainClass = runConfig.mainClass;
            this.vmArgs = runConfig.vmArgs;
            this.args = runConfig.programArgs;
        }
    }
}