setup

.gitignore

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+# User-specific stuff
+.idea/
+
+*.iml
+*.ipr
+*.iws
+
+# IntelliJ
+out/
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+.gradle
+build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Cache of project
+.gradletasknamecache
+
+**/build/
+
+# Common working directory
+run/
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2024 
+
+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.

build.gradle

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+plugins {
+    id 'fabric-loom' version '1.5-SNAPSHOT'
+    id 'maven-publish'
+}
+
+version = project.mod_version
+group = project.maven_group
+
+repositories {
+    // Add repositories to retrieve artifacts from in here.
+    // You should only use this when depending on other mods because
+    // Loom adds the essential maven repositories to download Minecraft and libraries from automatically.
+    // See https://docs.gradle.org/current/userguide/declaring_repositories.html
+    // for more information about repositories.
+}
+
+dependencies {
+    // To change the versions see the gradle.properties file
+    minecraft "com.mojang:minecraft:${project.minecraft_version}"
+    mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
+    modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
+
+        // Fabric API. This is technically optional, but you probably want it anyway.
+    modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
+    }
+
+processResources {
+    inputs.property "version", project.version
+    inputs.property "minecraft_version", project.minecraft_version
+    inputs.property "loader_version", project.loader_version
+    filteringCharset "UTF-8"
+
+    filesMatching("fabric.mod.json") {
+        expand "version": project.version,
+                "minecraft_version": project.minecraft_version,
+                "loader_version": project.loader_version
+    }
+}
+
+def targetJavaVersion = 17
+tasks.withType(JavaCompile).configureEach {
+    // ensure that the encoding is set to UTF-8, no matter what the system default is
+    // this fixes some edge cases with special characters not displaying correctly
+    // see http://yodaconditions.net/blog/fix-for-java-file-encoding-problems-with-gradle.html
+    // If Javadoc is generated, this must be specified in that task too.
+    it.options.encoding = "UTF-8"
+    if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) {
+        it.options.release.set(targetJavaVersion)
+    }
+}
+
+java {
+    def javaVersion = JavaVersion.toVersion(targetJavaVersion)
+    if (JavaVersion.current() < javaVersion) {
+        toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
+    }
+    archivesBaseName = project.archives_base_name
+    // Loom will automatically attach sourcesJar to a RemapSourcesJar task and to the "build" task
+    // if it is present.
+    // If you remove this line, sources will not be generated.
+    withSourcesJar()
+}
+
+jar {
+    from("LICENSE") {
+        rename { "${it}_${project.archivesBaseName}"}
+    }
+}
+
+// configure the maven publication
+publishing {
+    publications {
+        mavenJava(MavenPublication) {
+            from components.java
+        }
+    }
+
+    // See https://docs.gradle.org/current/userguide/publishing_maven.html for information on how to set up publishing.
+    repositories {
+        // Add repositories to publish to here.
+        // Notice: This block does NOT have the same function as the block in the top level.
+        // The repositories here will be used for publishing your artifact, not for
+        // retrieving dependencies.
+    }
+}

gradle.properties

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+# Done to increase the memory available to gradle.
+org.gradle.jvmargs=-Xmx1G
+
+# Fabric Properties
+	# check these on https://modmuss50.me/fabric.html
+	minecraft_version=1.20.4
+	yarn_mappings=1.20.4+build.3
+	loader_version=0.15.7
+
+# Mod Properties
+	mod_version = 1.0
+	maven_group = marumasa
+	archives_base_name = maruma_sign_webui
+
+# Dependencies
+	# check this on https://modmuss50.me/fabric.html
+	fabric_version=0.96.11+1.20.4

gradle/wrapper/gradle-wrapper.properties

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+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip

settings.gradle

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+pluginManagement {
+    repositories {
+        maven {
+            name = 'Fabric'
+            url = 'https://maven.fabricmc.net/'
+        }
+        gradlePluginPortal()
+    }
+}

src/main/java/marumasa/maruma_sign_webui/MarumaSignWebUI.java

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+package marumasa.maruma_sign_webui;
+
+import com.mojang.logging.LogUtils;
+import net.fabricmc.api.ModInitializer;
+import org.slf4j.Logger;
+
+public class MarumaSignWebUI implements ModInitializer {
+    // ModのID
+    public static final String MOD_ID = "maruma_sign_webui";
+    // ロガー
+    public static final Logger LOGGER = LogUtils.getLogger();
+
+    @Override
+    public void onInitialize() {
+        LOGGER.info("Start: " + MOD_ID);
+    }
+}

src/main/java/marumasa/maruma_sign_webui/ServerManager.java

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+package marumasa.maruma_sign_webui;
+
+import marumasa.maruma_sign_webui.util.PortManager;
+import marumasa.maruma_sign_webui.http.ServerEngine;
+import net.minecraft.util.Util;
+
+public class ServerManager {
+
+    private static ServerEngine engine;
+
+    public static void openMenu() {
+        if (engine == null)  // サーバーが起動していない場合
+            build(); // サーバーを起動
+        // ブラウザで起動したサーバーに接続する
+        Util.getOperatingSystem().open(String.format("http://localhost:%d%s", engine.port, "/index.html"));
+    }
+
+    private static void build() {
+        // ポート番号を設定
+        int port = PortManager.generate();
+        // サーバーを起動させる
+        engine = new ServerEngine(port);
+    }
+}

src/main/java/marumasa/maruma_sign_webui/client/MarumaSignWebUIClient.java

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+package marumasa.maruma_sign_webui.client;
+
+import marumasa.maruma_sign_webui.ServerManager;
+import marumasa.maruma_sign_webui.util.Utils;
+import net.fabricmc.api.ClientModInitializer;
+import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
+import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
+import net.minecraft.client.option.KeyBinding;
+import org.lwjgl.glfw.GLFW;
+
+public class MarumaSignWebUIClient implements ClientModInitializer {
+    @Override
+    public void onInitializeClient() {
+
+        // キーバインド登録
+        KeyBinding binding = KeyBindingHelper.registerKeyBinding(
+                Utils.createKeyBinding("open_menu", GLFW.GLFW_KEY_M)
+        );
+
+        // クライアントティックイベントにキーバインドの処理を登録
+        ClientTickEvents.END_CLIENT_TICK.register(client -> {
+            // もしキーが押されたら
+            while (binding.wasPressed()) {
+                ServerManager.openMenu();
+            }
+        });
+    }
+}

src/main/java/marumasa/maruma_sign_webui/http/ServerEngine.java

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+package marumasa.maruma_sign_webui.http;
+
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpHandler;
+import com.sun.net.httpserver.HttpServer;
+import marumasa.maruma_sign_webui.http.service.APIService;
+import marumasa.maruma_sign_webui.http.service.WebUIService;
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+
+public class ServerEngine {
+
+    public final HttpServer server;
+    public final int port;
+
+    public ServerEngine(int port) {
+        this.port = port;
+        try {
+            server = HttpServer.create(new InetSocketAddress(port), 0);
+            server.start();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        server.createContext("/", new Handler());
+    }
+
+    public static class Handler implements HttpHandler {
+        @Override
+        public void handle(HttpExchange exchange) throws IOException {
+            // リクエストを処理する
+            if ("POST".equals(exchange.getRequestMethod())) {
+                APIService.Handle(exchange);
+            } else {
+                WebUIService.Handle(exchange);
+            }
+        }
+    }
+}