NikoCraft/chat_translate
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.gitignore vendored Normal file
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# Gradle
.gradle/
build/
# IDEs
.idea/
*.iml
*.ipr
*.iws
.vscode/
.classpath
.project
.settings/
bin/
eclipse/
# Run directories (dev server/client data)
run/
run-client/
run-server/
run-data/
runs/
# Logs and dumps
*.log
crash-reports/
# OS junk
Thumbs.db
.DS_Store

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MIT License
Copyright (c) 2026 Rechka
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.

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build.gradle Normal file
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plugins {
id 'java-library'
id 'idea'
id 'net.neoforged.moddev' version '2.0.144'
}
version = mod_version
group = mod_group_id
base {
archivesName = mod_id
}
repositories {
mavenCentral()
}
java.toolchain.languageVersion = JavaLanguageVersion.of(21)
neoForge {
version = project.neo_version
runs {
client {
client()
systemProperty 'forge.enabledGameTestNamespaces', mod_id
}
server {
server()
programArgument '--nogui'
systemProperty 'forge.enabledGameTestNamespaces', mod_id
}
}
mods {
"${mod_id}" {
sourceSet(sourceSets.main)
}
}
}
tasks.withType(ProcessResources).configureEach {
var replaceProperties = [
minecraft_version : minecraft_version,
minecraft_version_range: minecraft_version_range,
neo_version : neo_version,
neo_version_range : neo_version_range,
loader_version_range : loader_version_range,
mod_id : mod_id,
mod_name : mod_name,
mod_license : mod_license,
mod_version : mod_version,
mod_authors : mod_authors,
mod_description : mod_description
]
inputs.properties replaceProperties
filesMatching(['META-INF/neoforge.mods.toml']) {
expand replaceProperties
}
}
tasks.withType(JavaCompile).configureEach {
options.encoding = 'UTF-8'
}

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gradle.properties Normal file
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org.gradle.jvmargs=-Xmx3G
org.gradle.parallel=true
org.gradle.caching=true
minecraft_version=1.21.1
minecraft_version_range=[1.21.1,1.22)
neo_version=21.1.172
neo_version_range=[21.1,)
loader_version_range=[1,)
mod_id=chattranslator
mod_name=Chat Translator
mod_license=MIT
mod_version=1.0.0
mod_group_id=dev.rechka
mod_authors=Rechka
mod_description=Translates chat messages to each player's language automatically.

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distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
networkTimeout=10000
validateDistributionUrl=true
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

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#!/bin/sh
#
# Copyright © 2015 the original authors.
#
# 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
#
# https://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.
#
# SPDX-License-Identifier: Apache-2.0
#
##############################################################################
#
# Gradle start up script for POSIX generated by Gradle.
#
# Important for running:
#
# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
# noncompliant, but you have some other compliant shell such as ksh or
# bash, then to run this script, type that shell name before the whole
# command line, like:
#
# ksh Gradle
#
# Busybox and similar reduced shells will NOT work, because this script
# requires all of these POSIX shell features:
# * functions;
# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
# * compound commands having a testable exit status, especially «case»;
# * various built-in commands including «command», «set», and «ulimit».
#
# Important for patching:
#
# (2) This script targets any POSIX shell, so it avoids extensions provided
# by Bash, Ksh, etc; in particular arrays are avoided.
#
# The "traditional" practice of packing multiple parameters into a
# space-separated string is a well documented source of bugs and security
# problems, so this is (mostly) avoided, by progressively accumulating
# options in "$@", and eventually passing that to Java.
#
# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
# see the in-line comments for details.
#
# There are tweaks for specific operating systems such as AIX, CygWin,
# Darwin, MinGW, and NonStop.
#
# (3) This script is generated from the Groovy template
# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
# within the Gradle project.
#
# You can find Gradle at https://github.com/gradle/gradle/.
#
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
app_path=$0
# Need this for daisy-chained symlinks.
while
APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
[ -h "$app_path" ]
do
ls=$( ls -ld "$app_path" )
link=${ls#*' -> '}
case $link in #(
/*) app_path=$link ;; #(
*) app_path=$APP_HOME$link ;;
esac
done
# This is normally unused
# shellcheck disable=SC2034
APP_BASE_NAME=${0##*/}
# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum
warn () {
echo "$*"
} >&2
die () {
echo
echo "$*"
echo
exit 1
} >&2
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "$( uname )" in #(
CYGWIN* ) cygwin=true ;; #(
Darwin* ) darwin=true ;; #(
MSYS* | MINGW* ) msys=true ;; #(
NONSTOP* ) nonstop=true ;;
esac
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD=$JAVA_HOME/jre/sh/java
else
JAVACMD=$JAVA_HOME/bin/java
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD=java
if ! command -v java >/dev/null 2>&1
then
die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
fi
# Increase the maximum file descriptors if we can.
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
case $MAX_FD in #(
max*)
# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
MAX_FD=$( ulimit -H -n ) ||
warn "Could not query maximum file descriptor limit"
esac
case $MAX_FD in #(
'' | soft) :;; #(
*)
# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
ulimit -n "$MAX_FD" ||
warn "Could not set maximum file descriptor limit to $MAX_FD"
esac
fi
# Collect all arguments for the java command, stacking in reverse order:
# * args from the command line
# * the main class name
# * -classpath
# * -D...appname settings
# * --module-path (only if needed)
# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
# For Cygwin or MSYS, switch paths to Windows format before running java
if "$cygwin" || "$msys" ; then
APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
JAVACMD=$( cygpath --unix "$JAVACMD" )
# Now convert the arguments - kludge to limit ourselves to /bin/sh
for arg do
if
case $arg in #(
-*) false ;; # don't mess with options #(
/?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
[ -e "$t" ] ;; #(
*) false ;;
esac
then
arg=$( cygpath --path --ignore --mixed "$arg" )
fi
# Roll the args list around exactly as many times as the number of
# args, so each arg winds up back in the position where it started, but
# possibly modified.
#
# NB: a `for` loop captures its iteration list before it begins, so
# changing the positional parameters here affects neither the number of
# iterations, nor the values presented in `arg`.
shift # remove old arg
set -- "$@" "$arg" # push replacement arg
done
fi
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='-Dfile.encoding=UTF-8 "-Xmx64m" "-Xms64m"'
# Collect all arguments for the java command:
# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
# and any embedded shellness will be escaped.
# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
# treated as '${Hostname}' itself on the command line.
set -- \
"-Dorg.gradle.appname=$APP_BASE_NAME" \
-jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
"$@"
# Stop when "xargs" is not available.
if ! command -v xargs >/dev/null 2>&1
then
die "xargs is not available"
fi
# Use "xargs" to parse quoted args.
#
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
#
# In Bash we could simply go:
#
# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
# set -- "${ARGS[@]}" "$@"
#
# but POSIX shell has neither arrays nor command substitution, so instead we
# post-process each arg (as a line of input to sed) to backslash-escape any
# character that might be a shell metacharacter, then use eval to reverse
# that process (while maintaining the separation between arguments), and wrap
# the whole thing up as a single "set" statement.
#
# This will of course break if any of these variables contains a newline or
# an unmatched quote.
#
eval "set -- $(
printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
xargs -n1 |
sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
tr '\n' ' '
)" '"$@"'
exec "$JAVACMD" "$@"

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@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%"=="" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%"=="" set DIRNAME=.
@rem This is normally unused
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS=-Dfile.encoding=UTF-8 "-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if %ERRORLEVEL% equ 0 goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if %ERRORLEVEL% equ 0 goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
set EXIT_CODE=%ERRORLEVEL%
if %EXIT_CODE% equ 0 set EXIT_CODE=1
if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
exit /b %EXIT_CODE%
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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pluginManagement {
repositories {
maven { url = 'https://maven.neoforged.net/releases' }
gradlePluginPortal()
}
}
plugins {
id 'org.gradle.toolchains.foojay-resolver-convention' version '0.9.0'
}
rootProject.name = 'chattranslator'

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src/main/java/dev/rechka/chattranslator/ChatTranslator.java Normal file
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package dev.rechka.chattranslator;
import com.mojang.logging.LogUtils;
import dev.rechka.chattranslator.command.TranslateCommand;
import dev.rechka.chattranslator.config.TranslatorConfig;
import dev.rechka.chattranslator.server.ChatEventHandler;
import net.neoforged.bus.api.IEventBus;
import net.neoforged.fml.ModContainer;
import net.neoforged.fml.common.Mod;
import net.neoforged.fml.event.lifecycle.FMLCommonSetupEvent;
import net.neoforged.neoforge.common.NeoForge;
import net.neoforged.neoforge.event.RegisterCommandsEvent;
import org.slf4j.Logger;
@Mod(ChatTranslator.MOD_ID)
public class ChatTranslator {
public static final String MOD_ID = "chattranslator";
public static final Logger LOGGER = LogUtils.getLogger();
public ChatTranslator(IEventBus modEventBus, ModContainer modContainer) {
TranslatorConfig.init(modContainer);
modEventBus.addListener(this::commonSetup);
NeoForge.EVENT_BUS.addListener(this::onRegisterCommands);
NeoForge.EVENT_BUS.register(new ChatEventHandler());
}
private void commonSetup(FMLCommonSetupEvent event) {
LOGGER.info("[ChatTranslator] Common setup complete.");
}
private void onRegisterCommands(RegisterCommandsEvent event) {
TranslateCommand.register(event.getDispatcher());
}
}

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src/main/java/dev/rechka/chattranslator/client/ClientPayloadHandlers.java Normal file
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package dev.rechka.chattranslator.client;
import dev.rechka.chattranslator.network.S2CTranslatedMessagePacket;
import net.minecraft.client.Minecraft;
import net.minecraft.network.chat.Component;
import net.neoforged.api.distmarker.Dist;
import net.neoforged.api.distmarker.OnlyIn;
/**
* Client-only payload handling. FML strips {@code @OnlyIn} members on the
* dedicated server, so this class must never be referenced from common code
* except inside lazily-loaded lambdas.
*/
@OnlyIn(Dist.CLIENT)
public final class ClientPayloadHandlers {
private ClientPayloadHandlers() {
}
/** Must be called on the main/render thread. */
public static void handleTranslatedMessage(S2CTranslatedMessagePacket pkt) {
Minecraft mc = Minecraft.getInstance();
if (mc.gui == null || mc.player == null) return;
String header = "\u00A77<\u00A7r" + pkt.senderName() + "\u00A77>\u00A7r ";
Component msg;
if (pkt.originalText().isEmpty() || pkt.originalText().equals(pkt.translatedText())) {
msg = Component.literal(header + pkt.translatedText());
} else {
String line1 = header + pkt.translatedText();
String line2 = "\u00A78\u00A7o [" + pkt.originalText() + "]\u00A7r";
msg = Component.literal(line1 + "\n" + line2);
}
mc.gui.getChat().addMessage(msg);
}
}

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src/main/java/dev/rechka/chattranslator/client/ClientSetup.java Normal file
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package dev.rechka.chattranslator.client;
import com.mojang.blaze3d.platform.InputConstants;
import dev.rechka.chattranslator.ChatTranslator;
import dev.rechka.chattranslator.client.gui.TranslatorScreen;
import dev.rechka.chattranslator.network.C2SPlayerLocalePacket;
import dev.rechka.chattranslator.network.PacketHandler;
import net.minecraft.client.KeyMapping;
import net.minecraft.client.Minecraft;
import net.neoforged.api.distmarker.Dist;
import net.neoforged.bus.api.SubscribeEvent;
import net.neoforged.fml.common.EventBusSubscriber;
import net.neoforged.neoforge.client.event.ClientPlayerNetworkEvent;
import net.neoforged.neoforge.client.event.InputEvent;
import net.neoforged.neoforge.client.event.RegisterKeyMappingsEvent;
import org.lwjgl.glfw.GLFW;
@EventBusSubscriber(modid = ChatTranslator.MOD_ID, bus = EventBusSubscriber.Bus.MOD, value = Dist.CLIENT)
public class ClientSetup {
public static KeyMapping OPEN_GUI_KEY;
@SubscribeEvent
public static void onRegisterKeyMappings(RegisterKeyMappingsEvent event) {
OPEN_GUI_KEY = new KeyMapping(
"chattranslator.keybind.open_gui",
InputConstants.Type.KEYSYM,
GLFW.GLFW_KEY_UNKNOWN,
"key.categories.chattranslator"
);
event.register(OPEN_GUI_KEY);
}
}
@EventBusSubscriber(modid = ChatTranslator.MOD_ID, bus = EventBusSubscriber.Bus.GAME, value = Dist.CLIENT)
class ClientGameEvents {
@SubscribeEvent
public static void onPlayerJoin(ClientPlayerNetworkEvent.LoggingIn event) {
Minecraft mc = Minecraft.getInstance();
String locale = mc.getLanguageManager().getSelected();
PacketHandler.sendToServer(new C2SPlayerLocalePacket(locale));
}
@SubscribeEvent
public static void onKeyInput(InputEvent.Key event) {
Minecraft mc = Minecraft.getInstance();
if (ClientSetup.OPEN_GUI_KEY.consumeClick() && mc.screen == null) {
mc.setScreen(new TranslatorScreen());
}
}
}

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src/main/java/dev/rechka/chattranslator/client/gui/TranslatorScreen.java Normal file
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package dev.rechka.chattranslator.client.gui;
import dev.rechka.chattranslator.config.TranslatorConfig;
import dev.rechka.chattranslator.network.C2SPlayerLocalePacket;
import dev.rechka.chattranslator.network.PacketHandler;
import dev.rechka.chattranslator.server.TranslationService;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.gui.components.Button;
import net.minecraft.client.gui.components.CycleButton;
import net.minecraft.client.gui.components.EditBox;
import net.minecraft.client.gui.screens.Screen;
import net.minecraft.network.chat.Component;
import net.neoforged.api.distmarker.Dist;
import net.neoforged.api.distmarker.OnlyIn;
import java.util.List;
@OnlyIn(Dist.CLIENT)
public class TranslatorScreen extends Screen {
private static final int PANEL_W = 320;
private static final int PANEL_H = 230;
private static final int ROW_H = 24;
private static final int FIELD_W = 200;
private String selectedLocale;
private String statusMessage = "";
private int statusColor = 0xAAAAAA;
private CycleButton<String> languageButton;
private EditBox urlField;
private EditBox apiKeyField;
private CycleButton<Boolean> showOriginalButton;
private Button testButton;
private Button saveButton;
private Button cancelButton;
// LibreTranslate-supported source languages
private static final List<String> LOCALES = List.of(
"af", "sq", "am", "ar", "az", "be", "bn", "bg", "ca", "zh", "hr",
"cs", "da", "nl", "en", "eo", "et", "fi", "fr", "gl", "ka", "de",
"el", "gu", "he", "hi", "hu", "is", "id", "ga", "it", "ja", "kn",
"kk", "ko", "ky", "lv", "lt", "mk", "ms", "ml", "mr", "mn", "ne",
"nb", "fa", "pl", "pt", "ro", "ru", "sr", "sk", "sl", "es", "sw",
"sv", "tl", "ta", "te", "th", "tr", "uk", "ur", "uz", "vi", "cy"
);
public TranslatorScreen() {
super(Component.translatable("chattranslator.gui.title"));
String full = Minecraft.getInstance().getLanguageManager().getSelected(); // e.g. "ru_ru"
selectedLocale = full.length() >= 2 ? full.substring(0, 2) : "en";
}
@Override
protected void init() {
super.init();
int cx = this.width / 2;
int cy = this.height / 2;
int left = cx - PANEL_W / 2 + 10;
int top = cy - PANEL_H / 2 + 30;
languageButton = CycleButton.<String>builder(lang -> Component.literal(lang.toUpperCase()))
.withValues(LOCALES)
.withInitialValue(LOCALES.contains(selectedLocale) ? selectedLocale : "en")
.create(left, top, FIELD_W, 20,
Component.translatable("chattranslator.gui.language"),
(btn, val) -> selectedLocale = val);
addRenderableWidget(languageButton);
top += ROW_H + 4;
urlField = new EditBox(this.font, left, top, FIELD_W, 20,
Component.translatable("chattranslator.gui.libretranslate_url"));
urlField.setMaxLength(256);
urlField.setValue(TranslatorConfig.LIBRETRANSLATE_URL.get());
addRenderableWidget(urlField);
top += ROW_H + 4;
apiKeyField = new EditBox(this.font, left, top, FIELD_W, 20,
Component.translatable("chattranslator.gui.api_key"));
apiKeyField.setMaxLength(128);
apiKeyField.setValue(TranslatorConfig.API_KEY.get());
addRenderableWidget(apiKeyField);
top += ROW_H + 4;
showOriginalButton = CycleButton.onOffBuilder(TranslatorConfig.SHOW_ORIGINAL.get())
.create(left, top, FIELD_W, 20,
Component.translatable("chattranslator.gui.show_original"),
(btn, val) -> { });
addRenderableWidget(showOriginalButton);
top += ROW_H + 4;
testButton = Button.builder(
Component.translatable("chattranslator.gui.test"),
btn -> doTest()
).bounds(left, top, 90, 20).build();
addRenderableWidget(testButton);
int btnY = cy + PANEL_H / 2 - 30;
saveButton = Button.builder(
Component.translatable("chattranslator.gui.save"),
btn -> doSave()
).bounds(cx - 105, btnY, 100, 20).build();
addRenderableWidget(saveButton);
cancelButton = Button.builder(
Component.translatable("chattranslator.gui.cancel"),
btn -> this.onClose()
).bounds(cx + 5, btnY, 100, 20).build();
addRenderableWidget(cancelButton);
}
private void doTest() {
statusMessage = "Testing...";
statusColor = 0xFFFFAA;
TranslationService.testConnection(urlField.getValue(), apiKeyField.getValue()).thenAccept(result ->
// Result arrives on a worker thread — hop back to the render thread
Minecraft.getInstance().execute(() -> {
if (result.ok()) {
statusMessage = "\u2714 Connection OK";
statusColor = 0x55FF55;
} else {
statusMessage = "\u2718 " + result.detail();
statusColor = 0xFF5555;
}
})
);
}
private void doSave() {
// Server config is editable here only in singleplayer; dedicated servers
// use config/chattranslator-server.toml or /chattranslate seturl
TranslatorConfig.LIBRETRANSLATE_URL.set(urlField.getValue().trim());
TranslatorConfig.API_KEY.set(apiKeyField.getValue().trim());
TranslatorConfig.SHOW_ORIGINAL.set(showOriginalButton.getValue());
TranslatorConfig.SERVER_SPEC.save();
PacketHandler.sendToServer(new C2SPlayerLocalePacket(selectedLocale));
TranslationService.invalidateCache();
this.onClose();
}
@Override
public void render(GuiGraphics gfx, int mouseX, int mouseY, float partialTick) {
// Screen.render paints renderBackground() first, then all widgets on top.
super.render(gfx, mouseX, mouseY, partialTick);
}
/**
* The panel must be drawn here: in 1.21 vanilla paints a blurred background
* inside Screen.render, which covers anything drawn before it.
*/
@Override
public void renderBackground(GuiGraphics gfx, int mouseX, int mouseY, float partialTick) {
super.renderBackground(gfx, mouseX, mouseY, partialTick);
int cx = this.width / 2;
int cy = this.height / 2;
int px = cx - PANEL_W / 2;
int py = cy - PANEL_H / 2;
gfx.fill(px, py, px + PANEL_W, py + PANEL_H, 0xE0101010);
gfx.renderOutline(px, py, PANEL_W, PANEL_H, 0xFF444466);
gfx.drawCenteredString(this.font,
Component.translatable("chattranslator.gui.title"),
cx, py + 8, 0xFFFFFF);
gfx.drawString(this.font,
Component.translatable("chattranslator.gui.language"),
languageButton.getX(), languageButton.getY() - 11, 0xAAAAAA);
gfx.drawString(this.font,
Component.translatable("chattranslator.gui.libretranslate_url"),
urlField.getX(), urlField.getY() - 11, 0xAAAAAA);
gfx.drawString(this.font,
Component.translatable("chattranslator.gui.api_key"),
apiKeyField.getX(), apiKeyField.getY() - 11, 0xAAAAAA);
if (!statusMessage.isEmpty()) {
gfx.drawCenteredString(this.font, statusMessage, cx,
testButton.getY() + 26, statusColor);
}
}
@Override
public boolean isPauseScreen() {
return false;
}
}

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src/main/java/dev/rechka/chattranslator/command/TranslateCommand.java Normal file
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package dev.rechka.chattranslator.command;
import com.mojang.brigadier.CommandDispatcher;
import com.mojang.brigadier.arguments.StringArgumentType;
import com.mojang.brigadier.builder.LiteralArgumentBuilder;
import dev.rechka.chattranslator.config.TranslatorConfig;
import dev.rechka.chattranslator.server.TranslationService;
import net.minecraft.commands.CommandSourceStack;
import net.minecraft.commands.Commands;
import net.minecraft.network.chat.Component;
public class TranslateCommand {
public static void register(CommandDispatcher<CommandSourceStack> dispatcher) {
LiteralArgumentBuilder<CommandSourceStack> root = Commands.literal("chattranslate")
.requires(src -> src.hasPermission(2));
root.then(Commands.literal("status")
.executes(ctx -> {
boolean en = TranslatorConfig.SERVER_ENABLED.get();
ctx.getSource().sendSuccess(() -> Component.literal(
"[ChatTranslator] Status: " + (en ? "§aENABLED" : "§cDISABLED") +
" | URL: " + TranslatorConfig.LIBRETRANSLATE_URL.get()
), false);
return 1;
})
);
root.then(Commands.literal("enable").executes(ctx -> {
TranslatorConfig.SERVER_ENABLED.set(true);
TranslatorConfig.SERVER_SPEC.save();
ctx.getSource().sendSuccess(() -> Component.literal("[ChatTranslator] §aEnabled."), true);
return 1;
}));
root.then(Commands.literal("disable").executes(ctx -> {
TranslatorConfig.SERVER_ENABLED.set(false);
TranslatorConfig.SERVER_SPEC.save();
ctx.getSource().sendSuccess(() -> Component.literal("[ChatTranslator] §cDisabled."), true);
return 1;
}));
root.then(Commands.literal("seturl")
.then(Commands.argument("url", StringArgumentType.greedyString())
.executes(ctx -> {
String url = StringArgumentType.getString(ctx, "url").trim();
TranslatorConfig.LIBRETRANSLATE_URL.set(url);
TranslatorConfig.SERVER_SPEC.save();
TranslationService.invalidateCache();
ctx.getSource().sendSuccess(() -> Component.literal(
"[ChatTranslator] LibreTranslate URL set to: §e" + url
), true);
return 1;
})
)
);
root.then(Commands.literal("setkey")
.then(Commands.argument("key", StringArgumentType.greedyString())
.executes(ctx -> {
String key = StringArgumentType.getString(ctx, "key").trim();
TranslatorConfig.API_KEY.set(key);
TranslatorConfig.SERVER_SPEC.save();
ctx.getSource().sendSuccess(() -> Component.literal(
"[ChatTranslator] API key updated."
), false);
return 1;
})
)
);
root.then(Commands.literal("clearcache").executes(ctx -> {
TranslationService.invalidateCache();
ctx.getSource().sendSuccess(() -> Component.literal("[ChatTranslator] Cache cleared."), false);
return 1;
}));
root.then(Commands.literal("showoriginal")
.then(Commands.literal("true").executes(ctx -> {
TranslatorConfig.SHOW_ORIGINAL.set(true);
TranslatorConfig.SERVER_SPEC.save();
ctx.getSource().sendSuccess(() -> Component.literal("[ChatTranslator] Show original: §atrue"), true);
return 1;
}))
.then(Commands.literal("false").executes(ctx -> {
TranslatorConfig.SHOW_ORIGINAL.set(false);
TranslatorConfig.SERVER_SPEC.save();
ctx.getSource().sendSuccess(() -> Component.literal("[ChatTranslator] Show original: §cfalse"), true);
return 1;
}))
);
dispatcher.register(root);
}
}

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src/main/java/dev/rechka/chattranslator/config/TranslatorConfig.java Normal file
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package dev.rechka.chattranslator.config;
import net.neoforged.fml.ModContainer;
import net.neoforged.fml.config.ModConfig;
import net.neoforged.neoforge.common.ModConfigSpec;
public class TranslatorConfig {
public static final ModConfigSpec SERVER_SPEC;
public static ModConfigSpec.BooleanValue SERVER_ENABLED;
public static ModConfigSpec.ConfigValue<String> LIBRETRANSLATE_URL;
public static ModConfigSpec.ConfigValue<String> API_KEY;
public static ModConfigSpec.BooleanValue SHOW_ORIGINAL;
public static ModConfigSpec.BooleanValue AUTODETECT_LANGUAGE;
public static ModConfigSpec.IntValue CACHE_MINUTES;
public static ModConfigSpec.IntValue REQUEST_TIMEOUT_MS;
static {
ModConfigSpec.Builder serverBuilder = new ModConfigSpec.Builder();
serverBuilder.comment("Chat Translator — Server Settings").push("server");
SERVER_ENABLED = serverBuilder
.comment("Enable chat translation globally")
.define("enabled", true);
LIBRETRANSLATE_URL = serverBuilder
.comment("LibreTranslate instance URL")
.define("libretranslate_url", "https://translate.argosopentech.com");
API_KEY = serverBuilder
.comment("API key for LibreTranslate (leave empty if not required)")
.define("api_key", "");
SHOW_ORIGINAL = serverBuilder
.comment("Append original message below the translation")
.define("show_original", true);
AUTODETECT_LANGUAGE = serverBuilder
.comment("Detect each message's language via LibreTranslate /detect instead of trusting the sender's client language")
.define("autodetect_language", false);
CACHE_MINUTES = serverBuilder
.comment("How long to cache translations and detections (minutes)")
.defineInRange("cache_minutes", 30, 1, 1440);
REQUEST_TIMEOUT_MS = serverBuilder
.comment("HTTP request timeout in milliseconds")
.defineInRange("request_timeout_ms", 5000, 500, 30000);
serverBuilder.pop();
SERVER_SPEC = serverBuilder.build();
}
public static void init(ModContainer container) {
container.registerConfig(ModConfig.Type.SERVER, SERVER_SPEC);
}
}

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src/main/java/dev/rechka/chattranslator/network/C2SPlayerLocalePacket.java Normal file
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package dev.rechka.chattranslator.network;
import dev.rechka.chattranslator.ChatTranslator;
import dev.rechka.chattranslator.server.PlayerLocaleCache;
import io.netty.buffer.ByteBuf;
import net.minecraft.network.codec.ByteBufCodecs;
import net.minecraft.network.codec.StreamCodec;
import net.minecraft.network.protocol.common.custom.CustomPacketPayload;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.level.ServerPlayer;
import net.neoforged.neoforge.network.handling.IPayloadContext;
public record C2SPlayerLocalePacket(String locale) implements CustomPacketPayload {
public static final CustomPacketPayload.Type<C2SPlayerLocalePacket> TYPE =
new CustomPacketPayload.Type<>(ResourceLocation.fromNamespaceAndPath(ChatTranslator.MOD_ID, "player_locale"));
public static final StreamCodec<ByteBuf, C2SPlayerLocalePacket> STREAM_CODEC =
ByteBufCodecs.STRING_UTF8.map(C2SPlayerLocalePacket::new, C2SPlayerLocalePacket::locale);
@Override
public CustomPacketPayload.Type<? extends CustomPacketPayload> type() {
return TYPE;
}
public static void handle(C2SPlayerLocalePacket packet, IPayloadContext ctx) {
ctx.enqueueWork(() -> {
if (ctx.player() instanceof ServerPlayer sp) {
String locale = packet.locale();
if (locale != null && locale.length() >= 2 && locale.length() <= 16) {
PlayerLocaleCache.set(sp.getUUID(), locale);
ChatTranslator.LOGGER.debug("[ChatTranslator] {} locale: {}", sp.getName().getString(), locale);
}
}
});
}
}

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src/main/java/dev/rechka/chattranslator/network/PacketHandler.java Normal file
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package dev.rechka.chattranslator.network;
import dev.rechka.chattranslator.ChatTranslator;
import dev.rechka.chattranslator.client.ClientPayloadHandlers;
import net.minecraft.server.level.ServerPlayer;
import net.neoforged.bus.api.SubscribeEvent;
import net.neoforged.fml.common.EventBusSubscriber;
import net.neoforged.neoforge.network.PacketDistributor;
import net.neoforged.neoforge.network.event.RegisterPayloadHandlersEvent;
import net.neoforged.neoforge.network.registration.PayloadRegistrar;
@EventBusSubscriber(modid = ChatTranslator.MOD_ID, bus = EventBusSubscriber.Bus.MOD)
public class PacketHandler {
@SubscribeEvent
public static void onRegisterPayloads(RegisterPayloadHandlersEvent event) {
PayloadRegistrar registrar = event.registrar(ChatTranslator.MOD_ID)
.versioned("1")
.optional(); // lets vanilla clients join
registrar.playToServer(
C2SPlayerLocalePacket.TYPE,
C2SPlayerLocalePacket.STREAM_CODEC,
C2SPlayerLocalePacket::handle
);
// The lambda body loads ClientPayloadHandlers lazily — never resolved on dedicated servers
registrar.playToClient(
S2CTranslatedMessagePacket.TYPE,
S2CTranslatedMessagePacket.STREAM_CODEC,
(packet, ctx) -> ctx.enqueueWork(() ->
ClientPayloadHandlers.handleTranslatedMessage(packet))
);
}
public static void sendToPlayer(ServerPlayer player, S2CTranslatedMessagePacket packet) {
PacketDistributor.sendToPlayer(player, packet);
}
public static void sendToServer(C2SPlayerLocalePacket packet) {
PacketDistributor.sendToServer(packet);
}
}

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src/main/java/dev/rechka/chattranslator/network/S2CTranslatedMessagePacket.java Normal file
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package dev.rechka.chattranslator.network;
import dev.rechka.chattranslator.ChatTranslator;
import io.netty.buffer.ByteBuf;
import net.minecraft.network.codec.ByteBufCodecs;
import net.minecraft.network.codec.StreamCodec;
import net.minecraft.network.protocol.common.custom.CustomPacketPayload;
import net.minecraft.resources.ResourceLocation;
/**
* Server → client translated chat message. Empty {@code originalText} means "hide original".
* Handled client-side by {@link dev.rechka.chattranslator.client.ClientPayloadHandlers}.
*/
public record S2CTranslatedMessagePacket(
String senderName,
String translatedText,
String originalText
) implements CustomPacketPayload {
public static final CustomPacketPayload.Type<S2CTranslatedMessagePacket> TYPE =
new CustomPacketPayload.Type<>(ResourceLocation.fromNamespaceAndPath(ChatTranslator.MOD_ID, "translated_msg"));
public static final StreamCodec<ByteBuf, S2CTranslatedMessagePacket> STREAM_CODEC =
StreamCodec.composite(
ByteBufCodecs.STRING_UTF8, S2CTranslatedMessagePacket::senderName,
ByteBufCodecs.STRING_UTF8, S2CTranslatedMessagePacket::translatedText,
ByteBufCodecs.STRING_UTF8, pkt -> pkt.originalText() != null ? pkt.originalText() : "",
S2CTranslatedMessagePacket::new
);
public S2CTranslatedMessagePacket(String senderName, String translatedText, String originalText) {
this.senderName = senderName;
this.translatedText = translatedText;
this.originalText = originalText != null ? originalText : "";
}
@Override
public CustomPacketPayload.Type<? extends CustomPacketPayload> type() {
return TYPE;
}
}

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src/main/java/dev/rechka/chattranslator/server/ChatEventHandler.java Normal file
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package dev.rechka.chattranslator.server;
import dev.rechka.chattranslator.ChatTranslator;
import dev.rechka.chattranslator.config.TranslatorConfig;
import dev.rechka.chattranslator.network.PacketHandler;
import dev.rechka.chattranslator.network.S2CTranslatedMessagePacket;
import net.minecraft.network.chat.Component;
import net.minecraft.server.level.ServerPlayer;
import net.neoforged.bus.api.EventPriority;
import net.neoforged.bus.api.SubscribeEvent;
import net.neoforged.neoforge.event.ServerChatEvent;
import net.neoforged.neoforge.event.entity.player.PlayerEvent;
import java.util.List;
import java.util.concurrent.CompletableFuture;
public class ChatEventHandler {
@SubscribeEvent(priority = EventPriority.HIGH)
public void onServerChat(ServerChatEvent event) {
if (!TranslatorConfig.SERVER_ENABLED.get()) return;
// Cancel the vanilla broadcast — we deliver messages ourselves
event.setCanceled(true);
String rawText = event.getMessage().getString();
ServerPlayer sender = event.getPlayer();
String senderName = sender.getName().getString();
List<ServerPlayer> recipients = sender.getServer().getPlayerList().getPlayers();
resolveSourceLanguage(sender, rawText)
.exceptionally(ex -> {
ChatTranslator.LOGGER.warn(
"[ChatTranslator] Source language detection failed, using sender locale", ex);
return null;
})
.thenAccept(sourceLang -> broadcast(recipients, senderName, rawText, sourceLang));
}
/**
* Source language of a message: auto-detected from the text itself
* (LibreTranslate /detect) or taken from the sender's configured language.
*/
private CompletableFuture<String> resolveSourceLanguage(ServerPlayer sender, String rawText) {
String fallback = PlayerLocaleCache.getLanguage(sender);
if (TranslatorConfig.AUTODETECT_LANGUAGE.get()) {
return TranslationService.detect(rawText)
.handle((detected, ex) ->
(detected == null || detected.isBlank()) ? fallback : detected);
}
return CompletableFuture.completedFuture(fallback);
}
private void broadcast(List<ServerPlayer> recipients, String senderName, String rawText, String sourceLang) {
final String src = PlayerLocaleCache.toLanguage(sourceLang);
for (ServerPlayer recipient : recipients) {
if (!PlayerLocaleCache.hasClientMod(recipient.getUUID())) {
// Vanilla / modless client can't read our payload — plain system message
recipient.sendSystemMessage(Component.literal("<" + senderName + "> " + rawText));
continue;
}
String targetLang = PlayerLocaleCache.getLanguage(recipient);
if (targetLang.equals(src)) {
sendTranslated(recipient, senderName, rawText, null);
continue;
}
TranslationService.translate(rawText, src, targetLang)
.thenAccept(translated -> {
String original = TranslatorConfig.SHOW_ORIGINAL.get() ? rawText : null;
sendTranslated(recipient, senderName, translated, original);
})
.exceptionally(ex -> {
ChatTranslator.LOGGER.error("[ChatTranslator] Async translation error", ex);
sendTranslated(recipient, senderName, rawText, null);
return null;
});
}
}
private void sendTranslated(ServerPlayer player, String senderName, String text, String original) {
try {
PacketHandler.sendToPlayer(player, new S2CTranslatedMessagePacket(senderName, text, original));
} catch (Exception e) {
player.sendSystemMessage(Component.literal("<" + senderName + "> " + text));
}
}
@SubscribeEvent
public void onPlayerLogout(PlayerEvent.PlayerLoggedOutEvent event) {
if (event.getEntity() instanceof ServerPlayer sp) {
PlayerLocaleCache.remove(sp.getUUID());
}
}
}

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src/main/java/dev/rechka/chattranslator/server/PlayerLocaleCache.java Normal file
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package dev.rechka.chattranslator.server;
import net.minecraft.server.level.ServerPlayer;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
/**
* Per-player language storage. Players running our client mod report their
* locale via C2SPlayerLocalePacket; everyone else falls back to the vanilla
* client information language (every client sends it, modded or not).
*/
public class PlayerLocaleCache {
private static final Map<UUID, String> OVERRIDES = new ConcurrentHashMap<>();
private static final Set<UUID> MODDED_CLIENTS = ConcurrentHashMap.newKeySet();
public static void set(UUID playerId, String locale) {
if (locale == null || locale.isBlank()) return;
OVERRIDES.put(playerId, locale.trim().toLowerCase(Locale.ROOT));
MODDED_CLIENTS.add(playerId);
}
/** True when the client runs this mod and can read S2CTranslatedMessagePacket. */
public static boolean hasClientMod(UUID playerId) {
return MODDED_CLIENTS.contains(playerId);
}
public static String getLanguage(ServerPlayer player) {
String override = OVERRIDES.get(player.getUUID());
String locale = override != null ? override : safeVanillaLocale(player);
return toLanguage(locale);
}
private static String safeVanillaLocale(ServerPlayer player) {
try {
String vanilla = player.getLanguage();
return vanilla != null && !vanilla.isBlank() ? vanilla : "en_us";
} catch (Exception e) {
return "en_us";
}
}
/** "ru_RU" → "ru"; garbage → "en". */
public static String toLanguage(String locale) {
if (locale == null || locale.isBlank()) return "en";
String l = locale.trim().toLowerCase(Locale.ROOT);
int sep = l.indexOf('_');
if (sep > 0) l = l.substring(0, sep);
if (l.length() < 2 || l.length() > 8) return "en";
return l;
}
public static void remove(UUID playerId) {
OVERRIDES.remove(playerId);
MODDED_CLIENTS.remove(playerId);
}
public static void clear() {
OVERRIDES.clear();
MODDED_CLIENTS.clear();
}
}

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src/main/java/dev/rechka/chattranslator/server/TranslationService.java Normal file
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package dev.rechka.chattranslator.server;
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import dev.rechka.chattranslator.ChatTranslator;
import dev.rechka.chattranslator.config.TranslatorConfig;
import java.io.IOException;
import java.net.ConnectException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpConnectTimeoutException;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Duration;
import java.util.Map;
import java.util.concurrent.*;
public class TranslationService {
private static final Gson GSON = new Gson();
private static final ExecutorService EXECUTOR = Executors.newCachedThreadPool(r -> {
Thread t = new Thread(r, "ChatTranslator-Worker");
t.setDaemon(true);
return t;
});
/** Key format: "sourceLang|targetLang|text", or "detect|text" for language detections. */
private static final Map<String, CacheEntry> CACHE = new ConcurrentHashMap<>();
private static HttpClient httpClient;
public static void invalidateCache() {
CACHE.clear();
}
private static HttpClient getClient() {
if (httpClient == null) {
httpClient = HttpClient.newBuilder()
.connectTimeout(Duration.ofMillis(TranslatorConfig.REQUEST_TIMEOUT_MS.get()))
.build();
}
return httpClient;
}
/**
* Adds http:// when the scheme is missing and prefers 127.0.0.1 over
* localhost ("localhost" can resolve to IPv6 ::1, where LibreTranslate is
* often unreachable). Returns null for garbage input.
*/
static String normalizeBaseUrl(String raw) {
if (raw == null) return null;
String url = raw.trim();
if (url.isEmpty()) return null;
while (url.endsWith("/")) {
url = url.substring(0, url.length() - 1);
}
if (!url.startsWith("http://") && !url.startsWith("https://")) {
url = "http://" + url;
}
return url.replace("//localhost", "//127.0.0.1");
}
private static String configuredBaseUrl() {
String base = normalizeBaseUrl(TranslatorConfig.LIBRETRANSLATE_URL.get());
return base != null ? base : "https://translate.argosopentech.com";
}
public static CompletableFuture<String> translate(String text, String sourceLang, String targetLang) {
if (sourceLang.equals(targetLang)) {
return CompletableFuture.completedFuture(text);
}
String cacheKey = sourceLang + "|" + targetLang + "|" + text;
CacheEntry cached = CACHE.get(cacheKey);
if (cached != null && !cached.isExpired()) {
return CompletableFuture.completedFuture(cached.value);
}
return CompletableFuture.supplyAsync(() -> {
try {
String result = doTranslate(text, sourceLang, targetLang);
CACHE.put(cacheKey, new CacheEntry(result, TranslatorConfig.CACHE_MINUTES.get()));
return result;
} catch (Exception e) {
ChatTranslator.LOGGER.warn("[ChatTranslator] Translation failed: {}", e.getMessage());
return text; // fall back to the original on any error
}
}, EXECUTOR);
}
/**
* Detects the language of {@code text} via LibreTranslate /detect.
* Completes exceptionally on failure; callers should fall back to the
* sender's configured language.
*/
public static CompletableFuture<String> detect(String text) {
String cacheKey = "detect|" + text;
CacheEntry cached = CACHE.get(cacheKey);
if (cached != null && !cached.isExpired()) {
return CompletableFuture.completedFuture(cached.value);
}
return CompletableFuture.supplyAsync(() -> {
try {
String lang = doDetect(text);
CACHE.put(cacheKey, new CacheEntry(lang, TranslatorConfig.CACHE_MINUTES.get()));
return lang;
} catch (Exception e) {
ChatTranslator.LOGGER.warn("[ChatTranslator] Language detection failed: {}", e.getMessage());
throw new CompletionException(e);
}
}, EXECUTOR);
}
public record TestResult(boolean ok, String detail) {
public static TestResult ok(String detail) { return new TestResult(true, detail); }
public static TestResult fail(String reason) { return new TestResult(false, reason); }
}
public static CompletableFuture<TestResult> testConnection(String rawUrl, String apiKeyUnused) {
return CompletableFuture.supplyAsync(() -> {
String base = normalizeBaseUrl(rawUrl);
if (base == null) {
return TestResult.fail("URL is empty");
}
try {
HttpRequest request = HttpRequest.newBuilder()
.uri(URI.create(base + "/languages"))
.timeout(Duration.ofSeconds(5))
.GET()
.build();
HttpResponse<String> resp = getClient().send(request, HttpResponse.BodyHandlers.ofString());
int code = resp.statusCode();
if (code >= 200 && code < 300) {
return TestResult.ok("HTTP " + code);
}
if (code == 403) {
return TestResult.fail("HTTP 403 — API key required?");
}
return TestResult.fail("HTTP " + code);
} catch (HttpConnectTimeoutException e) {
return TestResult.fail("timeout");
} catch (ConnectException e) {
return TestResult.fail("connection refused");
} catch (Exception e) {
ChatTranslator.LOGGER.debug("[ChatTranslator] Connection test failed", e);
String msg = e.getMessage();
return TestResult.fail(msg != null && msg.length() <= 64 ? msg : e.getClass().getSimpleName());
}
}, EXECUTOR);
}
private static String doTranslate(String text, String sourceLang, String targetLang) throws IOException, InterruptedException {
JsonObject body = new JsonObject();
body.addProperty("q", text);
body.addProperty("source", sourceLang);
body.addProperty("target", targetLang);
body.addProperty("format", "text");
addApiKey(body);
HttpResponse<String> response = post(configuredBaseUrl() + "/translate", body);
if (response.statusCode() != 200) {
throw new IOException("HTTP " + response.statusCode() + ": " + response.body());
}
JsonObject json = GSON.fromJson(response.body(), JsonObject.class);
if (json.has("translatedText")) {
return json.get("translatedText").getAsString();
}
throw new IOException("No translatedText in response: " + response.body());
}
private static String doDetect(String text) throws IOException, InterruptedException {
JsonObject body = new JsonObject();
body.addProperty("q", text);
addApiKey(body);
HttpResponse<String> response = post(configuredBaseUrl() + "/detect", body);
if (response.statusCode() != 200) {
throw new IOException("HTTP " + response.statusCode() + ": " + response.body());
}
// LibreTranslate /detect returns [{"confidence":0.6,"language":"en"}, ...]
JsonArray arr = GSON.fromJson(response.body(), JsonArray.class);
if (arr != null && arr.size() > 0 && arr.get(0).isJsonObject()) {
JsonObject first = arr.get(0).getAsJsonObject();
if (first.has("language")) {
return first.get("language").getAsString();
}
}
throw new IOException("No language in detect response: " + response.body());
}
private static void addApiKey(JsonObject body) {
String apiKey = TranslatorConfig.API_KEY.get().trim();
if (!apiKey.isEmpty()) {
body.addProperty("api_key", apiKey);
}
}
private static HttpResponse<String> post(String url, JsonObject body) throws IOException, InterruptedException {
HttpRequest request = HttpRequest.newBuilder()
.uri(URI.create(url))
.timeout(Duration.ofMillis(TranslatorConfig.REQUEST_TIMEOUT_MS.get()))
.header("Content-Type", "application/json")
.POST(HttpRequest.BodyPublishers.ofString(GSON.toJson(body)))
.build();
return getClient().send(request, HttpResponse.BodyHandlers.ofString());
}
private record CacheEntry(String value, long expiresAt) {
CacheEntry(String value, int ttlMinutes) {
this(value, System.currentTimeMillis() + (long) ttlMinutes * 60_000);
}
boolean isExpired() {
return System.currentTimeMillis() > expiresAt;
}
}
}

24
src/main/resources/META-INF/neoforge.mods.toml Normal file
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@ -0,0 +1,24 @@
modLoader="javafml"
loaderVersion="${loader_version_range}"
license="${mod_license}"
[[mods]]
modId="${mod_id}"
version="${mod_version}"
displayName="${mod_name}"
description='''${mod_description}'''
authors="${mod_authors}"
[[dependencies.${mod_id}]]
modId="neoforge"
type="required"
versionRange="${neo_version_range}"
ordering="NONE"
side="BOTH"
[[dependencies.${mod_id}]]
modId="minecraft"
type="required"
versionRange="${minecraft_version_range}"
ordering="NONE"
side="BOTH"

12
src/main/resources/assets/chattranslator/lang/en_us.json Normal file
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@ -0,0 +1,12 @@
{
"chattranslator.gui.title": "Chat Translator Settings",
"chattranslator.gui.language": "My Language",
"chattranslator.gui.libretranslate_url": "LibreTranslate URL",
"chattranslator.gui.api_key": "API Key (optional)",
"chattranslator.gui.show_original": "Show Original Message",
"chattranslator.gui.save": "Save",
"chattranslator.gui.cancel": "Cancel",
"chattranslator.gui.test": "Test Connection",
"chattranslator.keybind.open_gui": "Open Translator Settings",
"key.categories.chattranslator": "Chat Translator"
}

6
src/main/resources/pack.mcmeta Normal file
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@ -0,0 +1,6 @@
{
"pack": {
"description": "Chat Translator Resources",
"pack_format": 15
}
}