Init

.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 BRNSystems
+
+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 '1.6-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=0.15.9
+
+# Mod Properties
+	mod_version = 1.0
+	maven_group = systems.brn
+	archives_base_name = chatencryptor
+
+# 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/systems/brn/chatencryptor/ChatDecryptorClient.java

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+package systems.brn.chatencryptor;
+
+import net.fabricmc.api.ClientModInitializer;
+import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents;
+import net.fabricmc.fabric.api.client.message.v1.ClientReceiveMessageEvents;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.text.Text;
+import net.minecraft.text.TranslatableTextContent;
+import java.util.Base64;
+
+public class ChatDecryptorClient implements ClientModInitializer {
+    @Override
+    public void onInitializeClient() {
+        ClientLifecycleEvents.CLIENT_STARTED.register(client -> {
+            // Register event listener for ClientTickEvents.END_CLIENT_TICK
+            ClientReceiveMessageEvents.ALLOW_CHAT.register((message, signedMessage, sender, params, receptionTimestamp) -> {
+                TranslatableTextContent content = (TranslatableTextContent) message.getContent();
+                String message_content = content.getArg(1).getString();
+                if(message_content.startsWith("BRNCrypt:")){
+                    String strippedMessage = message_content.replace("BRNCrypt:", "");
+                    String decodedMessage = new String(Base64.getDecoder().decode(strippedMessage));
+                    String outputMessage = "Decoded:" + decodedMessage;
+                    MinecraftClient.getInstance().inGameHud.getChatHud().addMessage(Text.of(outputMessage));
+                    return false;
+                }
+                else {
+                    MinecraftClient.getInstance().inGameHud.getChatHud().addMessage(Text.of("S:" + message_content + ":E"));
+                    return false;
+                }
+                //return true;
+            });
+        });
+    }
+}

src/main/java/systems/brn/chatencryptor/ChatEncryptorClient.java

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+package systems.brn.chatencryptor;
+
+import net.fabricmc.api.ClientModInitializer;
+import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents;
+import net.fabricmc.fabric.api.client.message.v1.ClientSendMessageEvents;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Base64;
+
+public class ChatEncryptorClient implements ClientModInitializer {
+    @Override
+    public void onInitializeClient() {
+        ClientLifecycleEvents.CLIENT_STARTED.register(client -> {
+            // Register event listener for ClientTickEvents.END_CLIENT_TICK
+            ClientSendMessageEvents.MODIFY_CHAT.register(message -> {
+                String encodedMessage = Base64.getEncoder().withoutPadding().encodeToString(message.getBytes(StandardCharsets.UTF_8));
+                return "BRNCrypt:" + encodedMessage;
+            });
+        });
+    }
+}

src/main/resources/chatencryptor.mixins.json

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+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "systems.brn.chatencryptor",
+  "compatibilityLevel": "JAVA_17",
+  "mixins": [
+  ],
+  "client": [
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}

src/main/resources/fabric.mod.json

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+{
+  "schemaVersion": 1,
+  "id": "chatencryptor",
+  "version": "${version}",
+  "name": "chatencryptor",
+  "description": "",
+  "authors": [
+    "BRNSystems"
+  ],
+  "contact": {
+    "website": "https://git.brn.systems/BRNSystems/chatencryptor",
+    "repo": "https://git.brn.systems/BRNSystems/chatencryptoratencryptor"
+  },
+  "license": "MIT",
+  "icon": "icon.png",
+  "environment": "client",
+  "entrypoints": {
+    "client": [
+      "systems.brn.chatencryptor.ChatEncryptorClient",
+      "systems.brn.chatencryptor.ChatDecryptorClient"
+    ]
+  },
+  "mixins": [
+    "chatencryptor.mixins.json"
+  ],
+  "depends": {
+    "fabricloader": ">=${loader_version}",
+    "fabric": "*",
+    "minecraft": "${minecraft_version}"
+  }
+}