Running with Redirects

build.gradle

@@ -0,0 +1,22 @@
+plugins {
+    id 'java'
+}
+
+group = 'io.github.skippyall'
+version = '1.0-SNAPSHOT'
+
+subprojects {
+    repositories {
+        exclusiveContent {
+            forRepository {
+                maven {
+                    name = "minebench-repo"
+                    url = "https://repo.minebench.de/"
+                }
+            }
+            filter {
+                includeModule("de.themoep", "minedown-adventure")
+            }
+        }
+    }
+}

common/build.gradle

@@ -0,0 +1,40 @@
+plugins {
+    id 'java'
+    id 'com.gradleup.shadow' version '8.3.5'
+}
+
+repositories {
+    mavenCentral()
+    maven {
+        url = "https://libraries.minecraft.net"
+    }
+}
+
+dependencies {
+    compileOnly "com.mojang:brigadier:${brigadier_version}"
+    compileOnly "net.kyori:adventure-api:${adventure_version}"
+    compileOnly "net.kyori:adventure-text-serializer-json:${adventure_version}"
+    compileOnly "net.kyori:adventure-text-minimessage:${adventure_version}"
+
+    compileOnly("org.slf4j:slf4j-api:$slf4j_version")
+
+    compileOnly("com.google.code.gson:gson:${gson_version}")
+
+    implementation "de.themoep:minedown-adventure:${minedown_version}"
+}
+
+def targetJavaVersion = 21
+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)
+    }
+}
+
+shadowJar {
+    relocate("de.themoep.minedown.adventure", "io.github.skippyall.minedown")
+}

common/src/main/java/io/github/skippyall/ruler/FileUtils.java

@@ -0,0 +1,47 @@
+package io.github.skippyall.ruler;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.stream.Stream;
+
+public class FileUtils {
+    public static Path removeExtension(Path path) {
+        return Path.of(removeExtension(path.toString()));
+    }
+
+    public static String removeExtension(String path) {
+        if(path.contains(".")) {
+            return path.substring(0, path.lastIndexOf('.'));
+        } else {
+            return path;
+        }
+    }
+
+    public static String getExtension(Path path) {
+        return getExtension(path.toString());
+    }
+
+    public static String getExtension(String path) {
+        if(path.contains(".")) {
+            return path.substring(path.lastIndexOf('.') + 1);
+        } else {
+            return "";
+        }
+    }
+
+    public static Path append(Path path, String extension) {
+        return Path.of(path.toString() + extension);
+    }
+
+    public static Path findFileWithName(Path path) {
+        try (Stream<Path> files = Files.list(path.getParent())) {
+            return files
+                    .filter(foundPath -> removeExtension(foundPath).equals(path))
+                    .findFirst()
+                    .orElse(null);
+        } catch (IOException e) {
+            return null;
+        }
+    }
+}

common/src/main/java/io/github/skippyall/ruler/MineDownSerializer.java

@@ -0,0 +1,18 @@
+package io.github.skippyall.ruler;
+
+import de.themoep.minedown.adventure.MineDown;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.serializer.ComponentSerializer;
+import org.jspecify.annotations.NonNull;
+
+public class MineDownSerializer implements ComponentSerializer<Component, Component, String> {
+    @Override
+    public @NonNull Component deserialize(@NonNull String input) {
+        return MineDown.parse(input);
+    }
+
+    @Override
+    public @NonNull String serialize(@NonNull Component component) {
+        return MineDown.stringify(component);
+    }
+}

common/src/main/java/io/github/skippyall/ruler/Platform.java

@@ -0,0 +1,13 @@
+package io.github.skippyall.ruler;
+
+import org.slf4j.Logger;
+
+import java.nio.file.Path;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Supplier;
+
+public interface Platform {
+    Path getConfigDirectory();
+    Logger getLogger();
+    <T> CompletableFuture<T> runAsync(Supplier<T> supplier);
+}

common/src/main/java/io/github/skippyall/ruler/Ruler.java

@@ -0,0 +1,21 @@
+package io.github.skippyall.ruler;
+
+import org.jetbrains.annotations.Nullable;
+
+public class Ruler {
+    public static final String ID = "ruler";
+
+    @Nullable
+    private static Platform platform;
+
+    public static void init(Platform platform) {
+        Ruler.platform = platform;
+    }
+
+    public static Platform getPlatform() {
+        if(platform == null) {
+            throw new IllegalStateException("Ruler is not initialized yet!");
+        }
+        return platform;
+    }
+}

common/src/main/java/io/github/skippyall/ruler/command/CommandHelper.java

@@ -0,0 +1,7 @@
+package io.github.skippyall.ruler.command;
+
+import net.kyori.adventure.audience.Audience;
+
+public interface CommandHelper<S> {
+    Audience toAudience(S source);
+}

common/src/main/java/io/github/skippyall/ruler/command/Commands.java

@@ -0,0 +1,57 @@
+package io.github.skippyall.ruler.command;
+
+import com.mojang.brigadier.arguments.ArgumentType;
+import com.mojang.brigadier.arguments.StringArgumentType;
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
+import com.mojang.brigadier.builder.RequiredArgumentBuilder;
+import io.github.skippyall.ruler.Ruler;
+import io.github.skippyall.ruler.config.ConfigLoader;
+import net.kyori.adventure.audience.Audience;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+
+import java.util.List;
+
+public class Commands<S> {
+    private final CommandHelper<S> helper;
+    private final RuleSuggestionProvider<S> ruleSuggestionProvider = new RuleSuggestionProvider<>();
+
+    public Commands(CommandHelper<S> helper) {
+        this.helper = helper;
+    }
+
+    public List<LiteralArgumentBuilder<S>> getCommands() {
+        return List.of(
+                literal("ruler")
+                        .then(literal("open")
+                                .then(argument("path", StringArgumentType.string())
+                                        .suggests(ruleSuggestionProvider)
+                                        .executes(context -> {
+                                            String path = StringArgumentType.getString(context, "path");
+                                            Audience player = helper.toAudience(context.getSource());
+
+                                            try {
+                                                player.sendMessage(ConfigLoader.getRule(path, player));
+                                            } catch (Exception e) {
+                                                player.sendMessage(Component.text("This file doesn't exist").color(NamedTextColor.RED));
+                                                Ruler.getPlatform().getLogger().error("Error while loading rule", e);
+                                            }
+                                            return 0;
+                                        })
+                                )
+                        )
+                        .executes(context -> {
+                            helper.toAudience(context.getSource()).sendMessage(Component.text("Hi"));
+                            return 0;
+                        })
+        );
+    }
+
+    private LiteralArgumentBuilder<S> literal(String name) {
+        return LiteralArgumentBuilder.literal(name);
+    }
+
+    private <T> RequiredArgumentBuilder<S, T> argument(String name, ArgumentType<T> type) {
+        return RequiredArgumentBuilder.argument(name, type);
+    }
+}

common/src/main/java/io/github/skippyall/ruler/command/RuleSuggestionProvider.java

@@ -0,0 +1,40 @@
+package io.github.skippyall.ruler.command;
+
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.exceptions.CommandSyntaxException;
+import com.mojang.brigadier.suggestion.SuggestionProvider;
+import com.mojang.brigadier.suggestion.Suggestions;
+import com.mojang.brigadier.suggestion.SuggestionsBuilder;
+import io.github.skippyall.ruler.Ruler;
+import io.github.skippyall.ruler.rule.RuleUtils;
+
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+
+public class RuleSuggestionProvider<S> implements SuggestionProvider<S> {
+    @Override
+    public CompletableFuture<Suggestions> getSuggestions(CommandContext<S> commandContext, SuggestionsBuilder suggestionsBuilder) throws CommandSyntaxException {
+        return Ruler.getPlatform().runAsync(() -> {
+            String start = suggestionsBuilder.getInput();
+            int last = start.lastIndexOf('.');
+
+            String incomplete;
+            String completed = "";
+
+            if (last != -1) {
+                incomplete = start.substring(last + 1);
+                completed = start.substring(0, last);
+            } else {
+                incomplete = start;
+            }
+            List<String> rules = RuleUtils.listRules(completed, true);
+            for (String rule : rules) {
+                if (rule.startsWith(incomplete)) {
+                    suggestionsBuilder.suggest(completed + rule);
+                }
+            }
+            return suggestionsBuilder.build();
+        });
+
+    }
+}

common/src/main/java/io/github/skippyall/ruler/config/ConfigLoader.java

@@ -0,0 +1,88 @@
+package io.github.skippyall.ruler.config;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonParseException;
+import io.github.skippyall.ruler.FileUtils;
+import io.github.skippyall.ruler.Ruler;
+import io.github.skippyall.ruler.config.condition.Condition;
+import io.github.skippyall.ruler.config.condition.ConditionTypeAdapter;
+import io.github.skippyall.ruler.rule.InvalidRuleException;
+import io.github.skippyall.ruler.rule.RuleUtils;
+import net.kyori.adventure.audience.Audience;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.serializer.ComponentSerializer;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+public class ConfigLoader {
+    public static final Gson configSerializer = new GsonBuilder()
+            .setPrettyPrinting()
+            .registerTypeAdapter(Condition.class, new ConditionTypeAdapter())
+            .registerTypeAdapter(Redirect.class, new Redirect.Adapter())
+            .create();
+
+    public static RuleConfig loadConfig(String rulePath) {
+        Path configPath = RuleUtils.getFilePathWithoutExtension(rulePath);
+        return loadConfig(configPath);
+    }
+
+    private static RuleConfig loadConfig(Path fileWithoutExtension) {
+        RuleConfig parentConfig = null;
+        if(RuleUtils.isInDirectory(fileWithoutExtension.getParent())) {
+            parentConfig = loadConfig(fileWithoutExtension.getParent());
+        }
+        RuleConfig config = null;
+        Path configPath = FileUtils.append(fileWithoutExtension, ".config.json");
+        if(Files.isRegularFile(configPath)) {
+            try {
+                config = configSerializer.fromJson(Files.newBufferedReader(configPath), RuleConfig.class);
+            } catch (IOException | JsonParseException e) {
+                Ruler.getPlatform().getLogger().error("Could not read config {}", configPath, e);
+                return parentConfig;
+            }
+        } else {
+            return parentConfig;
+        }
+
+        if(parentConfig != null) {
+            config.applyParentRules(parentConfig);
+        }
+        return config;
+    }
+
+    public static String getActualRulePath(String rulePath, Audience audience) {
+        Path fileWithoutExtension = RuleUtils.getFilePathWithoutExtension(rulePath);
+        RuleConfig config = loadConfig(fileWithoutExtension);
+
+        if(config != null) {
+            for (Redirect redirect : config.getRedirects()) {
+                if (redirect.getCondition().test(audience)) {
+                    return redirect.getRulePath();
+                }
+            }
+        }
+
+        return rulePath;
+    }
+
+    public static Component getRule(String path, Audience player) throws InvalidRuleException {
+        String actualPath = ConfigLoader.getActualRulePath(path, player);
+        Ruler.getPlatform().getLogger().error(actualPath);
+
+        Path filePath = RuleUtils.getFilePath(actualPath);
+
+        String extension = FileUtils.getExtension(filePath);
+
+        ComponentSerializer<Component, Component, String> serializer = RuleUtils.getSerializer(extension);
+
+        if(serializer == null) {
+            throw new InvalidRuleException("File doesn't exist");
+        }
+
+
+        return RuleUtils.readRuleFromFile(filePath, serializer);
+    }
+}

common/src/main/java/io/github/skippyall/ruler/config/Redirect.java

@@ -0,0 +1,70 @@
+package io.github.skippyall.ruler.config;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+import io.github.skippyall.ruler.config.condition.AlwaysCondition;
+import io.github.skippyall.ruler.config.condition.Condition;
+import io.github.skippyall.ruler.config.condition.Conditions;
+
+import java.lang.reflect.Type;
+
+public class Redirect {
+    Condition condition = AlwaysCondition.ALWAYS_TRUE;
+    String rulePath;
+
+    public Redirect(String rulePath) {
+        this.rulePath = rulePath;
+    }
+
+    public Redirect(Condition condition, String rulePath) {
+        this.condition = condition;
+        this.rulePath = rulePath;
+    }
+
+    public Condition getCondition() {
+        return condition;
+    }
+
+    public void setCondition(Condition condition) {
+        this.condition = condition;
+    }
+
+    public String getRulePath() {
+        return rulePath;
+    }
+
+    public void setRulePath(String rulePath) {
+        this.rulePath = rulePath;
+    }
+
+    public static class Adapter implements JsonDeserializer<Redirect>, JsonSerializer<Redirect> {
+        @Override
+        public Redirect deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+            if(json.isJsonObject()) {
+                JsonObject object = json.getAsJsonObject();
+                String rulePath = object.get("rulePath").getAsString();
+                Condition condition = AlwaysCondition.ALWAYS_TRUE;
+                if(object.has("condition")) {
+                    condition = Conditions.deserialize(object.get("condition"));
+                }
+                return new Redirect(condition, rulePath);
+            } else {
+                String rulePath = json.getAsString();
+                return new Redirect(rulePath);
+            }
+        }
+
+        @Override
+        public JsonElement serialize(Redirect src, Type typeOfSrc, JsonSerializationContext context) {
+            JsonObject object = new JsonObject();
+            object.addProperty("rulePath", src.rulePath);
+            object.add("condition", Conditions.serialize(src.condition));
+            return null;
+        }
+    }
+}

common/src/main/java/io/github/skippyall/ruler/config/RuleConfig.java

@@ -0,0 +1,24 @@
+package io.github.skippyall.ruler.config;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class RuleConfig {
+    private List<Redirect> redirects = new ArrayList<>();
+
+    public RuleConfig() {
+
+    }
+
+    public void applyParentRules(RuleConfig parent) {
+        redirects.addAll(parent.getRedirects());
+    }
+
+    public List<Redirect> getRedirects() {
+        return redirects;
+    }
+
+    public void setRedirects(List<Redirect> redirects) {
+        this.redirects = redirects;
+    }
+}

common/src/main/java/io/github/skippyall/ruler/config/condition/AlwaysCondition.java

@@ -0,0 +1,37 @@
+package io.github.skippyall.ruler.config.condition;
+
+import com.google.gson.JsonObject;
+import io.github.skippyall.ruler.Ruler;
+import net.kyori.adventure.audience.Audience;
+import net.kyori.adventure.key.Key;
+
+public class AlwaysCondition implements Condition {
+    public static final Key ALWAYS_TRUE_KEY = Key.key(Ruler.ID, "always_true");
+    public static final Key ALWAYS_FALSE_KEY = Key.key(Ruler.ID, "always_false");
+
+    public static final AlwaysCondition ALWAYS_TRUE = new AlwaysCondition(true, ALWAYS_TRUE_KEY);
+    public static final AlwaysCondition ALWAYS_FALSE = new AlwaysCondition(false, ALWAYS_FALSE_KEY);
+
+    private final boolean value;
+    private final Key type;
+
+    private AlwaysCondition(boolean value, Key type) {
+        this.value = value;
+        this.type = type;
+    }
+
+    @Override
+    public boolean test(Audience audience) {
+        return value;
+    }
+
+    @Override
+    public Key getType() {
+        return type;
+    }
+
+    @Override
+    public JsonObject serialize() {
+        return new JsonObject();
+    }
+}

common/src/main/java/io/github/skippyall/ruler/config/condition/Condition.java

@@ -0,0 +1,13 @@
+package io.github.skippyall.ruler.config.condition;
+
+import com.google.gson.JsonObject;
+import net.kyori.adventure.audience.Audience;
+import net.kyori.adventure.key.Key;
+
+public interface Condition {
+    boolean test(Audience audience);
+
+    Key getType();
+
+    JsonObject serialize();
+}

common/src/main/java/io/github/skippyall/ruler/config/condition/ConditionTypeAdapter.java

@@ -0,0 +1,26 @@
+package io.github.skippyall.ruler.config.condition;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParseException;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import java.lang.reflect.Type;
+
+public class ConditionTypeAdapter implements JsonSerializer<Condition>, JsonDeserializer<Condition> {
+    @Override
+    public Condition deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+        try {
+            return Conditions.deserialize(json);
+        } catch (Exception e) {
+            throw new JsonParseException(e);
+        }
+    }
+
+    @Override
+    public JsonElement serialize(Condition src, Type typeOfSrc, JsonSerializationContext context) {
+        return Conditions.serialize(src);
+    }
+}

common/src/main/java/io/github/skippyall/ruler/config/condition/Conditions.java

@@ -0,0 +1,39 @@
+package io.github.skippyall.ruler.config.condition;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import net.kyori.adventure.key.Key;
+
+import java.util.HashMap;
+import java.util.function.Function;
+
+public class Conditions {
+    private static final HashMap<Key, Function<JsonObject, Condition>> deserializers = new HashMap<>();
+
+    public static void register(Key name, Function<JsonObject, Condition> deserializer) {
+        deserializers.put(name, deserializer);
+    }
+
+    public static Condition deserialize(JsonElement config) {
+        if(config.isJsonObject()) {
+            JsonObject object = config.getAsJsonObject();
+            return deserializers.get(Key.key(object.get("type").getAsString())).apply(object);
+        } else {
+            String type = config.getAsString();
+            return deserializers.get(Key.key(type)).apply(null);
+        }
+    }
+
+    public static JsonObject serialize(Condition condition) {
+        JsonObject config = condition.serialize();
+        config.addProperty("type", condition.getType().asString());
+        return config;
+    }
+
+    static {
+        register(AlwaysCondition.ALWAYS_TRUE_KEY, object -> AlwaysCondition.ALWAYS_TRUE);
+        register(AlwaysCondition.ALWAYS_FALSE_KEY, object -> AlwaysCondition.ALWAYS_FALSE);
+        register(TwoParamLogicCondition.AND_KEY, element -> TwoParamLogicCondition.and(TwoParamLogicCondition.deserialize(element)));
+        register(TwoParamLogicCondition.OR_KEY, element -> TwoParamLogicCondition.or(TwoParamLogicCondition.deserialize(element)));
+    }
+}

common/src/main/java/io/github/skippyall/ruler/config/condition/TwoParamLogicCondition.java

@@ -0,0 +1,76 @@
+package io.github.skippyall.ruler.config.condition;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import io.github.skippyall.ruler.Ruler;
+import net.kyori.adventure.audience.Audience;
+import net.kyori.adventure.key.Key;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.BinaryOperator;
+
+public class TwoParamLogicCondition implements Condition {
+    public static final Key AND_KEY = Key.key(Ruler.ID, "and");
+    public static final Key OR_KEY = Key.key(Ruler.ID, "or");
+
+    private final Key key;
+    private final BinaryOperator<Boolean> logic;
+    private List<Condition> conditions;
+
+    private TwoParamLogicCondition(Key key, BinaryOperator<Boolean> logic, List<Condition> conditions) {
+        this.key = key;
+        this.logic = logic;
+        this.conditions = conditions;
+    }
+
+    public static TwoParamLogicCondition and(List<Condition> conditions) {
+        return new TwoParamLogicCondition(AND_KEY, (b1, b2) -> b1 && b2, conditions);
+    }
+
+    public static TwoParamLogicCondition or(List<Condition> conditions) {
+        return new TwoParamLogicCondition(OR_KEY, (b1, b2) -> b1 || b2, conditions);
+    }
+
+    @Override
+    public boolean test(Audience audience) {
+        boolean currentValue = false;
+        boolean first = true;
+
+        for(Condition condition : conditions) {
+            if(first) {
+                currentValue = condition.test(audience);
+                first = false;
+            } else {
+                currentValue = logic.apply(currentValue, condition.test(audience));
+            }
+        }
+        return currentValue;
+    }
+
+    @Override
+    public Key getType() {
+        return key;
+    }
+
+    @Override
+    public JsonObject serialize() {
+        JsonArray conditionArray = new JsonArray();
+        for(Condition condition : conditions) {
+            conditionArray.add(Conditions.serialize(condition));
+        }
+        JsonObject object = new JsonObject();
+        object.add("conditions", conditionArray);
+        return object;
+    }
+
+    public static List<Condition> deserialize(JsonElement element) {
+        List<Condition> conditions = new ArrayList<>();
+        JsonArray array = element.getAsJsonArray();
+        for(JsonElement conditionElement : array) {
+            conditions.add(Conditions.deserialize(conditionElement.getAsJsonObject()));
+        }
+        return conditions;
+    }
+}

common/src/main/java/io/github/skippyall/ruler/rule/InvalidRuleException.java

@@ -0,0 +1,15 @@
+package io.github.skippyall.ruler.rule;
+
+public class InvalidRuleException extends RuntimeException {
+    public InvalidRuleException(String message) {
+        super(message);
+    }
+
+    public InvalidRuleException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InvalidRuleException(Throwable cause) {
+        super(cause);
+    }
+}

common/src/main/java/io/github/skippyall/ruler/rule/RuleUtils.java

@@ -0,0 +1,137 @@
+package io.github.skippyall.ruler.rule;
+
+import io.github.skippyall.ruler.FileUtils;
+import io.github.skippyall.ruler.MineDownSerializer;
+import io.github.skippyall.ruler.Ruler;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.serializer.ComponentSerializer;
+import net.kyori.adventure.text.serializer.json.JSONComponentSerializer;
+import org.jspecify.annotations.Nullable;
+
+import java.io.IOException;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Stream;
+
+public class RuleUtils {
+    private static final Map<String, ComponentSerializer<Component, Component, String>> extension_to_serializer = Map.of(
+            "json", JSONComponentSerializer.json(),
+            "md", new MineDownSerializer(),
+            "minimessage", MiniMessage.miniMessage()
+    );
+
+    @Nullable
+    public static ComponentSerializer<Component, Component, String> getSerializer(String fileNameExtension) {
+        return extension_to_serializer.get(fileNameExtension);
+    }
+
+    public static Path getRoot() {
+        return Ruler.getPlatform().getConfigDirectory().resolve("rules").toAbsolutePath();
+    }
+
+    public static boolean isValidRulePath(String path) {
+        return path.matches("([A-Za-z0-9\\-_.]+)") &&
+                Arrays.stream(path.split("\\.")).noneMatch(String::isEmpty);
+    }
+
+    public static void checkValidRulePath(String path) throws InvalidRuleException {
+        if(!isValidRulePath(path)) {
+            throw new InvalidRuleException("\"" + path + "\" is not a valid rule path");
+        }
+    }
+
+    public static boolean isInDirectory(Path path) {
+        return path.toAbsolutePath().startsWith(getRoot());
+    }
+
+    public static void checkDirectory(Path path) throws InvalidRuleException {
+        if(!isInDirectory(path)) {
+            throw new InvalidRuleException("File path \"" + path.toString() + "\" is not in the root rule directory.");
+        }
+    }
+
+    public static Path getFilePathWithoutExtension(String rulePath) throws InvalidRuleException {
+        if(rulePath.isEmpty()) {
+            return getRoot();
+        }
+        checkValidRulePath(rulePath);
+        Path joinedPath = getRoot().resolve(rulePath.replace(".", FileSystems.getDefault().getSeparator())).toAbsolutePath();
+        checkDirectory(joinedPath);
+        return joinedPath;
+    }
+
+    public static Path getFilePath(String rulePath) throws InvalidRuleException {
+        Path withoutExtension = getFilePathWithoutExtension(rulePath);
+
+        String extension = tryFormats(withoutExtension);
+        if(extension == null) {
+            throw new InvalidRuleException("File for rule \"" + rulePath + "\" not found.");
+        }
+
+        return Path.of(withoutExtension.toString() + "." + extension);
+    }
+
+    public static String getRulePath(Path filePath) throws InvalidRuleException {
+        checkDirectory(filePath);
+
+        Path relative = filePath.toAbsolutePath().relativize(getRoot());
+        String withoutExtension = FileUtils.removeExtension(relative).toString();
+        String path = withoutExtension.replace(FileSystems.getDefault().getSeparator(), ".");
+
+        checkValidRulePath(path);
+        return path;
+    }
+
+    public static Component readRuleFromFile(Path path, ComponentSerializer<Component, Component, String> serializer) throws InvalidRuleException {
+        String text;
+        try {
+            text = Files.readString(path);
+        } catch (IOException e) {
+            throw new InvalidRuleException("Exception while reading file", e);
+        }
+        try {
+            return serializer.deserialize(text);
+        } catch (Exception e) {
+            throw new InvalidRuleException("Exception while parsing", e);
+        }
+    }
+
+    public static @Nullable String tryFormats(Path path) {
+        String stringPath = path.toString();
+        for (String extension : extension_to_serializer.keySet()) {
+            if(Files.exists(Path.of(stringPath + "." + extension))) {
+                return extension;
+            }
+        }
+        return null;
+    }
+
+    public static List<String> listRules(String basePath, boolean directories) {
+        Path dirPath = getFilePathWithoutExtension(basePath);
+        try {
+            if(!Files.isDirectory(dirPath)) {
+                return List.of();
+            }
+            try(Stream<Path> paths = Files.list(dirPath)) {
+                return paths
+                        .filter(path -> {
+                            if (Files.isDirectory(path)) {
+                                return directories;
+                            } else {
+                                return extension_to_serializer.containsKey(FileUtils.getExtension(path));
+                            }
+                        })
+                        .map(RuleUtils::getRulePath)
+                        .toList();
+            }
+        } catch (IOException e) {
+            Ruler.getPlatform().getLogger().error("Exception while listing rules", e);
+            return List.of();
+        }
+    }
+}

fabric/build.gradle

@@ -0,0 +1,111 @@
+plugins {
+    id 'fabric-loom' version '1.16-SNAPSHOT' apply true
+    id 'maven-publish'
+    id 'com.gradleup.shadow' version '9.4.1'
+}
+
+version = project.mod_version
+group = project.maven_group
+
+base {
+    archivesName = project.archives_base_name
+}
+
+configurations {
+    shadowBundle {
+        canBeResolved = true
+        canBeConsumed = false
+    }
+}
+
+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:${project.loader_version}"
+
+    modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
+
+    modImplementation include("net.kyori:adventure-platform-fabric:${project.adventure_platform_fabric_version}")
+
+    implementation project(":common")
+    shadowBundle(project(":common"))
+}
+
+processResources {
+    inputs.property "version", project.version
+    inputs.property "minecraft_version", project.minecraft_version
+    inputs.property "loader_version", project.loader_version
+    filteringCharset "UTF-8"
+
+    filesMatching("fabric.mod.json") {
+        expand "version": project.version,
+                "minecraft_version": project.minecraft_version,
+                "loader_version": project.loader_version
+    }
+}
+
+def targetJavaVersion = 21
+tasks.withType(JavaCompile).configureEach {
+    // ensure that the encoding is set to UTF-8, no matter what the system default is
+    // this fixes some edge cases with special characters not displaying correctly
+    // see http://yodaconditions.net/blog/fix-for-java-file-encoding-problems-with-gradle.html
+    // If Javadoc is generated, this must be specified in that task too.
+    it.options.encoding = "UTF-8"
+    if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) {
+        it.options.release.set(targetJavaVersion)
+    }
+}
+
+java {
+    def javaVersion = JavaVersion.toVersion(targetJavaVersion)
+    if (JavaVersion.current() < javaVersion) {
+        toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
+    }
+    // Loom will automatically attach sourcesJar to a RemapSourcesJar task and to the "build" task
+    // if it is present.
+    // If you remove this line, sources will not be generated.
+    withSourcesJar()
+}
+
+jar {
+    from("LICENSE") {
+        rename { "${it}_${project.archivesBaseName}"}
+    }
+}
+
+shadowJar {
+    configurations = [project.configurations.shadowBundle]
+    archiveClassifier = 'dev-shadow'
+    relocate("de.themoep.minedown.adventure", "io.github.skippyall.minedown")
+}
+
+remapJar {
+    input.set shadowJar.archiveFile
+}
+
+// configure the maven publication
+publishing {
+    publications {
+        create("mavenJava", MavenPublication) {
+            artifactId = project.archives_base_name
+            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.
+    }
+}

fabric/gradle.properties

@@ -0,0 +1,19 @@
+# Done to increase the memory available to gradle.
+org.gradle.jvmargs=-Xmx1G
+
+# Fabric Properties
+	# check these on https://modmuss50.me/fabric.html
+	minecraft_version=1.21.8
+	yarn_mappings=1.21.8+build.1
+	loader_version=0.17.2
+
+# Mod Properties
+	mod_version = 1.0-SNAPSHOT
+	maven_group = io.github.skippyall
+	archives_base_name = ruler-fabric
+
+# Dependencies
+	# check this on https://modmuss50.me/fabric.html
+	fabric_version=0.133.4+1.21.8
+
+	adventure_platform_fabric_version=6.6.0

fabric/src/main/java/io/github/skippyall/ruler/fabric/FabricCommandHelper.java

@@ -0,0 +1,12 @@
+package io.github.skippyall.ruler.fabric;
+
+import io.github.skippyall.ruler.command.CommandHelper;
+import net.kyori.adventure.audience.Audience;
+import net.minecraft.server.command.ServerCommandSource;
+
+public class FabricCommandHelper implements CommandHelper<ServerCommandSource> {
+    @Override
+    public Audience toAudience(ServerCommandSource source) {
+        return source.audience();
+    }
+}

fabric/src/main/java/io/github/skippyall/ruler/fabric/FabricPlatform.java

@@ -0,0 +1,33 @@
+package io.github.skippyall.ruler.fabric;
+
+import io.github.skippyall.ruler.Platform;
+import net.fabricmc.loader.api.FabricLoader;
+import net.minecraft.util.Util;
+import org.slf4j.Logger;
+
+import java.nio.file.Path;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Supplier;
+
+public class FabricPlatform implements Platform {
+    private static final Path CONFIG_DIR = FabricLoader.getInstance().getConfigDir().resolve(RulerFabric.MOD_ID).toAbsolutePath();
+
+    public FabricPlatform() {
+
+    }
+
+    @Override
+    public Path getConfigDirectory() {
+        return CONFIG_DIR;
+    }
+
+    @Override
+    public Logger getLogger() {
+        return RulerFabric.LOGGER;
+    }
+
+    @Override
+    public <T> CompletableFuture<T> runAsync(Supplier<T> supplier) {
+        return CompletableFuture.supplyAsync(supplier, Util.getMainWorkerExecutor());
+    }
+}

fabric/src/main/java/io/github/skippyall/ruler/fabric/RulerFabric.java

@@ -0,0 +1,26 @@
+package io.github.skippyall.ruler.fabric;
+
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
+import io.github.skippyall.ruler.Ruler;
+import io.github.skippyall.ruler.command.Commands;
+import net.fabricmc.api.ModInitializer;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.minecraft.server.command.ServerCommandSource;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class RulerFabric implements ModInitializer {
+    public static final String MOD_ID = "ruler";
+    public static final Commands<ServerCommandSource> COMMANDS = new Commands<>(new FabricCommandHelper());
+    public static final Logger LOGGER = LoggerFactory.getLogger(MOD_ID);
+
+    @Override
+    public void onInitialize() {
+        Ruler.init(new FabricPlatform());
+        CommandRegistrationCallback.EVENT.register((dispatcher, access,environment) -> {
+            for(LiteralArgumentBuilder<ServerCommandSource> node : COMMANDS.getCommands()) {
+                dispatcher.register(node);
+            }
+        });
+    }
+}

fabric/src/main/resources/fabric.mod.json

@@ -0,0 +1,26 @@
+{
+  "schemaVersion": 1,
+  "id": "ruler",
+  "version": "${version}",
+
+  "name": "Ruler",
+  "description": "",
+  "authors": [
+    "skippyall"
+  ],
+  "contact": {},
+
+  "license": "MIT",
+
+  "environment": "*",
+  "entrypoints": {
+    "main": [
+      "io.github.skippyall.ruler.fabric.RulerFabric"
+    ]
+  },
+  "depends": {
+    "fabricloader": ">=${loader_version}",
+    "fabric": "*",
+    "minecraft": "${minecraft_version}"
+  }
+}

gradle.properties

@@ -0,0 +1,6 @@
+brigadier_version=1.3.10
+adventure_version=4.26.1
+minedown_version=1.7.3-SNAPSHOT
+slf4j_version=2.0.17
+gson_version=2.13.0
+night_config_version=3.6.0

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Wed Apr 09 17:43:33 CEST 2025
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 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.
+#
+
+##############################################################################
+#
+#   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/master/subprojects/plugins/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
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&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
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$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: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$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 "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( 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
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# 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 "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,89 @@
+@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=.
+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="-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%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+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%"=="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!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1,12 @@
+pluginManagement {
+    repositories {
+        maven {
+            name = 'Fabric'
+            url = 'https://maven.fabricmc.net/'
+        }
+        gradlePluginPortal()
+    }
+}
+
+rootProject.name = 'Ruler'
+include ('common', 'velocity', 'fabric')

velocity/build.gradle

@@ -0,0 +1,79 @@
+plugins {
+    id 'java'
+    id 'eclipse'
+    id 'org.jetbrains.gradle.plugin.idea-ext' version '1.1.8'
+    id("xyz.jpenilla.run-velocity") version "2.3.1"
+    id 'com.gradleup.shadow' version '8.3.5'
+}
+
+configurations {
+    shadowBundle {
+        canBeResolved = true
+        canBeConsumed = false
+    }
+}
+
+repositories {
+    mavenCentral()
+    maven {
+        name = "papermc-repo"
+        url = "https://repo.papermc.io/repository/maven-public/"
+    }
+    maven {
+        name = "sonatype"
+        url = "https://oss.sonatype.org/content/groups/public/"
+    }
+}
+
+dependencies {
+    compileOnly("com.velocitypowered:velocity-api:3.4.0-SNAPSHOT")
+    annotationProcessor("com.velocitypowered:velocity-api:3.4.0-SNAPSHOT")
+
+    implementation project(":common")
+    shadowBundle(project(":common"))
+}
+
+shadowJar {
+    configurations = [project.configurations.shadowBundle]
+    archiveClassifier = 'dev-shadow'
+    relocate("de.themoep.minedown.adventure", "io.github.skippyall.minedown")
+    relocate("com.electronwill.nightconfig", "io.github.skippyall.nightconfig")
+}
+
+tasks {
+  runVelocity {
+    // Configure the Velocity version for our task.
+    // This is the only required configuration besides applying the plugin.
+    // Your plugin's jar (or shadowJar if present) will be used automatically.
+    velocityVersion("3.4.0-SNAPSHOT")
+  }
+}
+
+def targetJavaVersion = 21
+java {
+    toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
+}
+
+tasks.withType(JavaCompile).configureEach {
+    options.encoding = 'UTF-8'
+    options.release.set(targetJavaVersion)
+}
+
+/*
+def templateSource = file('src/main/templates')
+def templateDest = layout.buildDirectory.dir('generated/sources/templates')
+def generateTemplates = tasks.register('generateTemplates', Copy) { task ->
+    def props = [
+            'version': project.version
+    ]
+    task.inputs.properties props
+
+    task.from templateSource
+    task.into templateDest
+    task.expand props
+}
+
+sourceSets.main.java.srcDir(generateTemplates.map { it.outputs })
+
+project.idea.project.settings.taskTriggers.afterSync generateTemplates
+project.eclipse.synchronizationTasks(generateTemplates)*/

velocity/src/main/java/io/github/skippyall/ruler/velocity/RulerVelocity.java

@@ -0,0 +1,51 @@
+package io.github.skippyall.ruler.velocity;
+
+import com.google.inject.Inject;
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
+import com.velocitypowered.api.command.BrigadierCommand;
+import com.velocitypowered.api.command.CommandManager;
+import com.velocitypowered.api.command.CommandSource;
+import com.velocitypowered.api.event.Subscribe;
+import com.velocitypowered.api.event.proxy.ProxyInitializeEvent;
+import com.velocitypowered.api.plugin.Plugin;
+import com.velocitypowered.api.plugin.annotation.DataDirectory;
+import com.velocitypowered.api.proxy.ProxyServer;
+import io.github.skippyall.ruler.Ruler;
+import io.github.skippyall.ruler.command.Commands;
+import io.github.skippyall.ruler.velocity.config.Registration;
+import org.slf4j.Logger;
+
+import java.nio.file.Path;
+
+@Plugin(
+    id = "ruler-velocity",
+    name = "Ruler",
+    version = "1.0"
+)
+public class RulerVelocity {
+    public static Logger logger;
+    public static ProxyServer server;
+    public static Path configDirectory;
+    public static Commands<CommandSource> commands;
+    public static RulerVelocity instance;
+
+    @Inject
+    public RulerVelocity(ProxyServer server, Logger logger, @DataDirectory Path dir) {
+        RulerVelocity.server = server;
+        RulerVelocity.logger = logger;
+        RulerVelocity.configDirectory = dir;
+        instance = this;
+    }
+
+    @Subscribe
+    public void onProxyInitialization(ProxyInitializeEvent event) {
+        Ruler.init(new VelocityPlatform());
+        commands = new Commands<>(new VelocityCommandHelper());
+        CommandManager manager = server.getCommandManager();
+        for(LiteralArgumentBuilder<CommandSource> builder : commands.getCommands()) {
+            BrigadierCommand command = new BrigadierCommand(builder);
+            manager.register(manager.metaBuilder(command).plugin(this).build(), command);
+        }
+        Registration.register();
+    }
+}

velocity/src/main/java/io/github/skippyall/ruler/velocity/VelocityCommandHelper.java

@@ -0,0 +1,12 @@
+package io.github.skippyall.ruler.velocity;
+
+import com.velocitypowered.api.command.CommandSource;
+import io.github.skippyall.ruler.command.CommandHelper;
+import net.kyori.adventure.audience.Audience;
+
+public class VelocityCommandHelper implements CommandHelper<CommandSource> {
+    @Override
+    public Audience toAudience(CommandSource source) {
+        return source;
+    }
+}

velocity/src/main/java/io/github/skippyall/ruler/velocity/VelocityPlatform.java

@@ -0,0 +1,27 @@
+package io.github.skippyall.ruler.velocity;
+
+import io.github.skippyall.ruler.Platform;
+import org.slf4j.Logger;
+
+import java.nio.file.Path;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Supplier;
+
+public class VelocityPlatform implements Platform {
+    @Override
+    public Path getConfigDirectory() {
+        return RulerVelocity.configDirectory;
+    }
+
+    @Override
+    public Logger getLogger() {
+        return RulerVelocity.logger;
+    }
+
+    @Override
+    public <T> CompletableFuture<T> runAsync(Supplier<T> supplier) {
+        CompletableFuture<T> future = new CompletableFuture<>();
+        RulerVelocity.server.getScheduler().buildTask(RulerVelocity.instance, () -> future.complete(supplier.get())).schedule();
+        return future;
+    }
+}

velocity/src/main/java/io/github/skippyall/ruler/velocity/config/Registration.java

@@ -0,0 +1,12 @@
+package io.github.skippyall.ruler.velocity.config;
+
+import io.github.skippyall.ruler.config.condition.Conditions;
+import net.kyori.adventure.key.Key;
+
+public class Registration {
+    public static void register() {
+        Conditions.register(Key.key("ruler", "server"), object ->
+                new ServerCondition(object.get("server").getAsString())
+        );
+    }
+}

velocity/src/main/java/io/github/skippyall/ruler/velocity/config/ServerCondition.java

@@ -0,0 +1,41 @@
+package io.github.skippyall.ruler.velocity.config;
+
+import com.google.gson.JsonObject;
+import com.velocitypowered.api.proxy.Player;
+import com.velocitypowered.api.proxy.ServerConnection;
+import io.github.skippyall.ruler.config.condition.Condition;
+import net.kyori.adventure.audience.Audience;
+import net.kyori.adventure.key.Key;
+
+import java.util.Optional;
+
+public class ServerCondition implements Condition {
+    private String server;
+
+    public ServerCondition(String server) {
+        this.server = server;
+    }
+
+    @Override
+    public boolean test(Audience audience) {
+        if(audience instanceof Player player) {
+            Optional<ServerConnection> server = player.getCurrentServer();
+            if(server.isPresent()) {
+                return server.get().getServer().getServerInfo().getName().equals(this.server);
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public Key getType() {
+        return Key.key("ruler", "server");
+    }
+
+    @Override
+    public JsonObject serialize() {
+        JsonObject object = new JsonObject();
+        object.addProperty("server", server);
+        return object;
+    }
+}