add context Object to check methods and create the ability to have a specific method for each type of context or one for all by using the superclass and casting yourself

This Method searches the The method that has the best matching parameters with the fewest inheritance levels as possible. Left sided priority

.gitea/workflows/gradle-publish-dev.yaml

@@ -0,0 +1,40 @@
+name: Publish
+
+on:
+  push:
+    branches: [dev]
+
+jobs:
+  Gradle-Publish:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          java-version: '23'
+          check-latest: true
+          distribution: 'zulu'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+        with:
+          add-job-summary: always
+          cache-cleanup: on-success
+
+      - name: Cache Gradle dependencies
+        uses: actions/cache@v4
+        with:
+          path: | 
+            ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: Publish Dev
+        env:
+          GITEA_TOKEN: ${{ secrets.PUBLISH_PACKAGE_TOKEN }}
+        run: chmod +x gradlew; ./gradlew publishAllPublicationsToGiteaRepository 

.gitea/workflows/gradle-publish.yaml

@@ -1,11 +1,11 @@
-name: Test
+name: Publish
 
 on:
   push:
     branches: [master]
 
 jobs:
-  Gradle-Test:
+  Gradle-Publish:
     runs-on: ubuntu-latest
 
     steps:
@@ -34,7 +34,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-gradle-
 
-      - name: Publish
+      - name: Publish Release
         env:
           GITEA_TOKEN: ${{ secrets.PUBLISH_PACKAGE_TOKEN }}
-        run: chmod +x gradlew; ./gradlew publishAllPublicationsToGiteaRepository
+        run: chmod +x gradlew; ./gradlew publishAllPublicationsToGiteaRepository -Prelease

build.gradle.kts

@@ -8,6 +8,7 @@ allprojects {
     group = "net.tomatentum.Marinara"
     version = "1.0.0-RC1" + (if (!project.hasProperty("release")) ("-" + getGitHash()) else "")
     description = "A simple but powerful, library-agnostic Discord Interaction Wrapper."
+
 }
 
 subprojects {
@@ -18,6 +19,8 @@ subprojects {
         publishing {
             publications {
                 create<MavenPublication>("maven") {
+                    if (!project.hasProperty("release"))
+                        artifactId = project.getName() + "-dev"
                     from(components["java"])
                 }
             }

lib/src/main/java/net/tomatentum/marinara/Marinara.java

@@ -1,22 +1,34 @@
 package net.tomatentum.marinara;
 
+import net.tomatentum.marinara.registry.InteractionCheckRegistry;
 import net.tomatentum.marinara.registry.InteractionRegistry;
 import net.tomatentum.marinara.wrapper.LibraryWrapper;
 
 public class Marinara {
     
     public static <T extends LibraryWrapper> Marinara load(LibraryWrapper wrapper) {
-        InteractionRegistry registry = new InteractionRegistry(wrapper);
-        return new Marinara(registry);
+        return new Marinara(wrapper);
     }
 
     private InteractionRegistry registry;
+    private InteractionCheckRegistry checkRegistry;
+    private LibraryWrapper wrapper;
 
-    private Marinara(InteractionRegistry registry) {
-        this.registry = registry;
+    private Marinara(LibraryWrapper wrapper) {
+        this.wrapper = wrapper;
+        this.registry = new InteractionRegistry(this);
+        this.checkRegistry = new InteractionCheckRegistry();
     }
 
     public InteractionRegistry getRegistry() {
         return registry;
     }
+
+    public InteractionCheckRegistry getCheckRegistry() {
+        return checkRegistry;
+    }
+
+    public LibraryWrapper getWrapper() {
+        return wrapper;
+    }
 }

lib/src/main/java/net/tomatentum/marinara/checks/AppliedCheck.java

@@ -0,0 +1,40 @@
+package net.tomatentum.marinara.checks;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+
+import net.tomatentum.marinara.util.ReflectionUtil;
+
+public record AppliedCheck(InteractionCheck<?> check, Annotation annotation) {
+    
+    public boolean pre(Object context) {
+        Method[] methods = Arrays.stream(check.getClass().getMethods())
+            .filter(x -> x.getName().equals("preExec"))
+            .toArray(s -> new Method[s]);
+        Method method = ReflectionUtil.getMostSpecificMethod(methods, context.getClass());
+        method.setAccessible(true);
+        try {
+            return (boolean) method.invoke(check, annotation);
+        } catch (IllegalAccessException | InvocationTargetException | SecurityException e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+    public boolean post(Object context) {
+        Method[] methods = Arrays.stream(check.getClass().getMethods())
+            .filter(x -> x.getName().equals("postExec"))
+            .toArray(s -> new Method[s]);
+        Method method = ReflectionUtil.getMostSpecificMethod(methods, context.getClass());
+        method.setAccessible(true);
+        try {
+            return (boolean) method.invoke(check, annotation);
+        } catch (IllegalAccessException | InvocationTargetException | SecurityException e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+}

lib/src/main/java/net/tomatentum/marinara/checks/InteractionCheck.java

@@ -0,0 +1,10 @@
+package net.tomatentum.marinara.checks;
+
+import java.lang.annotation.Annotation;
+
+public interface InteractionCheck<A extends Annotation> {
+
+    public boolean preExec(Object context, A annotation);
+    public boolean postExec(Object context, A annotation);
+    
+}

lib/src/main/java/net/tomatentum/marinara/interaction/methods/ButtonInteractionMethod.java

@@ -2,39 +2,40 @@ package net.tomatentum.marinara.interaction.methods;
 
 import java.lang.reflect.Method;
 
+import net.tomatentum.marinara.Marinara;
 import net.tomatentum.marinara.interaction.InteractionHandler;
 import net.tomatentum.marinara.interaction.InteractionType;
-import net.tomatentum.marinara.interaction.annotation.Button;
-import net.tomatentum.marinara.wrapper.LibraryWrapper;
+import net.tomatentum.marinara.parser.AnnotationParser;
+import net.tomatentum.marinara.parser.ButtonParser;
 
 public class ButtonInteractionMethod extends InteractionMethod {
 
     private String customId;
 
-    ButtonInteractionMethod(Method method, InteractionHandler handler, LibraryWrapper wrapper) {
-        super(method, handler, wrapper);
-        parseMethod();
+    ButtonInteractionMethod(Method method, InteractionHandler handler, Marinara marinara) {
+        super(method, handler, marinara);
+    }
+
+    @Override
+    public AnnotationParser[] getParsers() {
+        return new AnnotationParser[] {
+            new ButtonParser(method, (x) -> { this.customId = x; } )
+        };
     }
 
     @Override
     public Object getParameter(Object parameter, int index) {
         Class<?> type = getMethod().getParameterTypes()[index+1];
-        return wrapper.getComponentContextObject(parameter, type);
+        return marinara.getWrapper().getComponentContextObject(parameter, type);
     }
 
     @Override
     public boolean canRun(Object context) {
-        return wrapper.getButtonId(context).equals(customId);
+        return marinara.getWrapper().getButtonId(context).equals(customId);
     }
 
     @Override
     public InteractionType getType() {
         return InteractionType.BUTTON;
     }
-
-    private void parseMethod() {
-        Button button = getMethod().getAnnotation(Button.class);
-        this.customId = button.value();
-    }
-    
 }

lib/src/main/java/net/tomatentum/marinara/interaction/methods/InteractionMethod.java

@@ -7,35 +7,52 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
+import net.tomatentum.marinara.Marinara;
+import net.tomatentum.marinara.checks.AppliedCheck;
 import net.tomatentum.marinara.interaction.InteractionHandler;
 import net.tomatentum.marinara.interaction.InteractionType;
 import net.tomatentum.marinara.interaction.annotation.Button;
 import net.tomatentum.marinara.interaction.commands.annotation.SlashCommand;
 import net.tomatentum.marinara.interaction.commands.annotation.SubCommand;
-import net.tomatentum.marinara.wrapper.LibraryWrapper;
+import net.tomatentum.marinara.parser.AnnotationParser;
+import net.tomatentum.marinara.parser.InteractionCheckParser;
 
 public abstract class InteractionMethod {
 
-    public static InteractionMethod create(Method method, InteractionHandler handler, LibraryWrapper wrapper) {
+    public static InteractionMethod create(Method method, InteractionHandler handler, Marinara marinara) {
         if (method.isAnnotationPresent(SlashCommand.class) || method.isAnnotationPresent(SubCommand.class))
-            return new SlashCommandInteractionMethod(method, handler, wrapper);
+            return new SlashCommandInteractionMethod(method, handler, marinara);
         if (method.isAnnotationPresent(Button.class))
-            return new ButtonInteractionMethod(method, handler, wrapper);
+            return new ButtonInteractionMethod(method, handler, marinara);
         return null;
     }
 
     protected Method method;
     protected InteractionHandler handler;
-    protected LibraryWrapper wrapper;
+    protected Marinara marinara;
+    protected List<AnnotationParser> parsers;
+    protected List<AppliedCheck> appliedChecks;
 
-    protected InteractionMethod(Method method, InteractionHandler handler, LibraryWrapper wrapper) {
+    protected InteractionMethod(Method method, 
+        InteractionHandler handler, 
+        Marinara marinara
+        ) {
         if (!Arrays.asList(handler.getClass().getMethods()).contains(method))
             throw new InvalidParameterException("Method does not apply to specified handler");
+
         this.method = method;
         this.handler = handler;
-        this.wrapper = wrapper;
+        this.marinara = marinara;
+        this.parsers = new ArrayList<>(Arrays.asList(getParsers()));
+        this.appliedChecks = new ArrayList<>();
+
+        parsers.add(new InteractionCheckParser(method, appliedChecks::add, marinara.getCheckRegistry()));
+
+        parsers.stream().forEach(AnnotationParser::parse);
     }
 
+    public abstract AnnotationParser[] getParsers();
+
     public abstract Object getParameter(Object parameter, int index);
 
     public abstract boolean canRun(Object context);
@@ -43,6 +60,23 @@ public abstract class InteractionMethod {
     public abstract InteractionType getType();
 
     public void run(Object context) {
+        this.appliedChecks.forEach(x -> x.pre(context));
+
+        method.setAccessible(true);
+        try {
+            method.invoke(handler, getParameters(context));
+        }catch (IllegalAccessException | InvocationTargetException ex) {
+            throw new RuntimeException(ex);
+        }
+
+        this.appliedChecks.forEach(x -> x.post(context));
+    }
+
+    public Method getMethod() {
+        return method;
+    }
+
+    private Object[] getParameters(Object context) {
         int parameterCount = method.getParameterCount();
         List<Object> parameters = new ArrayList<>();
         
@@ -53,16 +87,7 @@ public abstract class InteractionMethod {
             }
             parameters.add(getParameter(context, i-1));
         }
-        method.setAccessible(true);
-        try {
-            method.invoke(handler, parameters.toArray());
-        }catch (IllegalAccessException | InvocationTargetException ex) {
-            throw new RuntimeException(ex);
-        }
-    }
-
-    public Method getMethod() {
-        return method;
+        return parameters.toArray();
     }
 
 }

lib/src/main/java/net/tomatentum/marinara/interaction/methods/SlashCommandInteractionMethod.java

@@ -2,32 +2,36 @@ package net.tomatentum.marinara.interaction.methods;
 
 import java.lang.reflect.Method;
 
+import net.tomatentum.marinara.Marinara;
 import net.tomatentum.marinara.interaction.InteractionHandler;
 import net.tomatentum.marinara.interaction.InteractionType;
 import net.tomatentum.marinara.interaction.commands.ExecutableSlashCommandDefinition;
-import net.tomatentum.marinara.interaction.commands.annotation.SlashCommand;
-import net.tomatentum.marinara.interaction.commands.annotation.SubCommand;
-import net.tomatentum.marinara.interaction.commands.annotation.SubCommandGroup;
-import net.tomatentum.marinara.util.ReflectionUtil;
-import net.tomatentum.marinara.wrapper.LibraryWrapper;
+import net.tomatentum.marinara.parser.AnnotationParser;
+import net.tomatentum.marinara.parser.SlashCommandParser;
 
 public class SlashCommandInteractionMethod extends InteractionMethod {
 
     private ExecutableSlashCommandDefinition commandDefinition;
 
-    SlashCommandInteractionMethod(Method method, InteractionHandler handler, LibraryWrapper wrapper) {
-        super(method, handler, wrapper);
-        parseMethod();
+    SlashCommandInteractionMethod(Method method, InteractionHandler handler, Marinara marinara) {
+        super(method, handler, marinara);
+    }
+
+    @Override
+    public AnnotationParser[] getParsers() {
+        return new AnnotationParser[] { 
+            new SlashCommandParser(method, (x) -> { this.commandDefinition = x; } ) 
+        };
     }
 
     @Override
     public Object getParameter(Object context, int index) {
-        return wrapper.convertCommandOption(context, commandDefinition.options()[index].type(), commandDefinition.options()[index].name());
+        return marinara.getWrapper().convertCommandOption(context, commandDefinition.options()[index].type(), commandDefinition.options()[index].name());
     }
 
     @Override
     public boolean canRun(Object context) {
-        ExecutableSlashCommandDefinition other = wrapper.getCommandDefinition(context);
+        ExecutableSlashCommandDefinition other = marinara.getWrapper().getCommandDefinition(context);
         return commandDefinition.equals(other);
     }
 
@@ -40,24 +44,8 @@ public class SlashCommandInteractionMethod extends InteractionMethod {
         return commandDefinition;
     }
 
-    private void parseMethod() {
-        ReflectionUtil.checkValidCommandMethod(method);
-
-        SlashCommand cmd = ReflectionUtil.getAnnotation(method, SlashCommand.class);
-        ExecutableSlashCommandDefinition.Builder builder = new ExecutableSlashCommandDefinition.Builder();
-        builder.setApplicationCommand(cmd);
-
-        if (ReflectionUtil.isAnnotationPresent(method, SubCommandGroup.class)) {
-            SubCommandGroup cmdGroup = ReflectionUtil.getAnnotation(method, SubCommandGroup.class);
-            builder.setSubCommandGroup(cmdGroup);
-        }
-
-        if (ReflectionUtil.isAnnotationPresent(method, SubCommand.class)) {
-            SubCommand subCmd = ReflectionUtil.getAnnotation(method, SubCommand.class);
-            builder.setSubCommand(subCmd);
-        }
-
-        this.commandDefinition = builder.build();
+    public void setCommandDefinition(ExecutableSlashCommandDefinition commandDefinition) {
+        this.commandDefinition = commandDefinition;
     }
 
 }

lib/src/main/java/net/tomatentum/marinara/parser/AnnotationParser.java

@@ -0,0 +1,8 @@
+package net.tomatentum.marinara.parser;
+
+import java.lang.reflect.Method;
+
+public interface AnnotationParser {
+    void parse();
+    Method getMethod();
+}

lib/src/main/java/net/tomatentum/marinara/parser/ButtonParser.java

@@ -0,0 +1,29 @@
+package net.tomatentum.marinara.parser;
+
+import java.lang.reflect.Method;
+import java.util.function.Consumer;
+
+import net.tomatentum.marinara.interaction.annotation.Button;
+
+public class ButtonParser implements AnnotationParser {
+    
+    private Method method;
+    private Consumer<String> consumer;
+
+    public ButtonParser(Method method, Consumer<String> consumer) {
+        this.method = method;
+        this.consumer = consumer;
+    }
+
+    @Override
+    public void parse() {
+        Button button = getMethod().getAnnotation(Button.class);
+        this.consumer.accept(button.value());
+    }
+
+    @Override
+    public Method getMethod() {
+        return this.method;
+    }
+    
+}

lib/src/main/java/net/tomatentum/marinara/parser/InteractionCheckParser.java

@@ -0,0 +1,42 @@
+package net.tomatentum.marinara.parser;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.Optional;
+import java.util.function.Consumer;
+
+import net.tomatentum.marinara.checks.AppliedCheck;
+import net.tomatentum.marinara.checks.InteractionCheck;
+import net.tomatentum.marinara.registry.InteractionCheckRegistry;
+
+public class InteractionCheckParser implements AnnotationParser {
+
+    private InteractionCheckRegistry checkRegistry;
+    private Method method;
+    private Consumer<AppliedCheck> consumer;
+
+    public InteractionCheckParser(Method method, Consumer<AppliedCheck> consumer, InteractionCheckRegistry checkRegistry) {
+        this.checkRegistry = checkRegistry;
+        this.method = method;
+        this.consumer = consumer;
+    }
+
+    @Override
+    public void parse() {
+        Annotation[] annotations = method.getAnnotations();
+        Arrays.stream(annotations).forEach(this::convertAnnotation);
+    }
+
+    private void convertAnnotation(Annotation annotation) {
+            Optional<InteractionCheck<?>> check = this.checkRegistry.getCheckFromAnnotation(annotation.getClass());
+            if (check.isPresent())
+                consumer.accept(new AppliedCheck(check.get(), annotation));
+    }
+
+    @Override
+    public Method getMethod() {
+        return this.method;
+    }
+    
+}

lib/src/main/java/net/tomatentum/marinara/parser/SlashCommandParser.java

@@ -0,0 +1,63 @@
+package net.tomatentum.marinara.parser;
+
+import java.lang.reflect.Method;
+import java.util.function.Consumer;
+
+import net.tomatentum.marinara.interaction.commands.ExecutableSlashCommandDefinition;
+import net.tomatentum.marinara.interaction.commands.annotation.SlashCommand;
+import net.tomatentum.marinara.interaction.commands.annotation.SubCommand;
+import net.tomatentum.marinara.interaction.commands.annotation.SubCommandGroup;
+import net.tomatentum.marinara.util.ReflectionUtil;
+
+public class SlashCommandParser implements AnnotationParser {
+
+    private Method method;
+    private Consumer<ExecutableSlashCommandDefinition> consumer;
+
+    public SlashCommandParser(Method method, Consumer<ExecutableSlashCommandDefinition> consumer) {
+        this.method = method;
+        this.consumer = consumer;
+    }
+
+    @Override
+    public void parse() {
+        this.checkValidCommandMethod(method);
+
+        SlashCommand cmd = ReflectionUtil.getAnnotation(method, SlashCommand.class);
+        ExecutableSlashCommandDefinition.Builder builder = new ExecutableSlashCommandDefinition.Builder();
+        builder.setApplicationCommand(cmd);
+
+        if (ReflectionUtil.isAnnotationPresent(method, SubCommandGroup.class)) {
+            SubCommandGroup cmdGroup = ReflectionUtil.getAnnotation(method, SubCommandGroup.class);
+            builder.setSubCommandGroup(cmdGroup);
+        }
+
+        if (ReflectionUtil.isAnnotationPresent(method, SubCommand.class)) {
+            SubCommand subCmd = ReflectionUtil.getAnnotation(method, SubCommand.class);
+            builder.setSubCommand(subCmd);
+        }
+
+        consumer.accept(builder.build());
+    }
+
+    @Override
+    public Method getMethod() {
+       return this.method;
+    }
+
+    private void checkValidCommandMethod(Method method) {
+        if (method.isAnnotationPresent(SlashCommand.class) && 
+            method.getDeclaringClass().isAnnotationPresent(SlashCommand.class)) {
+            throw new RuntimeException(method.getName() + ": Can't have ApplicationCommand Annotation on Class and Method");
+        }
+
+        if (!ReflectionUtil.isAnnotationPresent(method, SlashCommand.class))
+            throw new RuntimeException(method.getName() + ": Missing ApplicationCommand Annotation on either Class or Method");
+
+        if ((method.isAnnotationPresent(SubCommand.class) && 
+            !ReflectionUtil.isAnnotationPresent(method, SlashCommand.class))) {
+            throw new RuntimeException(method.getName() + ": Missing ApplicationCommand Annotation on either Method or Class");
+        }
+    }
+    
+}

lib/src/main/java/net/tomatentum/marinara/registry/InteractionCheckRegistry.java

@@ -0,0 +1,32 @@
+package net.tomatentum.marinara.registry;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.TypeVariable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+import net.tomatentum.marinara.checks.InteractionCheck;
+
+public class InteractionCheckRegistry {
+    
+    private List<InteractionCheck<?>> checks;
+
+    public InteractionCheckRegistry() {
+        this.checks = new ArrayList<>();
+    }
+
+    public void addCheck(InteractionCheck<?> check) {
+        checks.add(check);
+    }
+
+    public Optional<InteractionCheck<?>> getCheckFromAnnotation(Class<? extends Annotation> annotation) {
+        for (InteractionCheck<?> interactionCheck : checks) {
+            TypeVariable<?> type = interactionCheck.getClass().getTypeParameters()[0];
+            if (type.getClass().equals(annotation.getClass()))
+                return Optional.of(interactionCheck);
+        }
+        return Optional.empty();
+    }
+
+}

lib/src/main/java/net/tomatentum/marinara/registry/InteractionRegistry.java

@@ -5,27 +5,27 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
 
+import net.tomatentum.marinara.Marinara;
 import net.tomatentum.marinara.interaction.InteractionHandler;
 import net.tomatentum.marinara.interaction.InteractionType;
 import net.tomatentum.marinara.interaction.commands.SlashCommandDefinition;
 import net.tomatentum.marinara.interaction.commands.ExecutableSlashCommandDefinition;
 import net.tomatentum.marinara.interaction.methods.SlashCommandInteractionMethod;
 import net.tomatentum.marinara.interaction.methods.InteractionMethod;
-import net.tomatentum.marinara.wrapper.LibraryWrapper;
 
 public class InteractionRegistry {
     private List<InteractionMethod> interactionMethods;
-    private LibraryWrapper wrapper;
+    private Marinara marinara;
 
-    public InteractionRegistry(LibraryWrapper wrapper) {
+    public InteractionRegistry(Marinara marinara) {
         this.interactionMethods = new ArrayList<>();
-        this.wrapper = wrapper;
-        wrapper.subscribeInteractions(this::handle);
+        this.marinara = marinara;
+        marinara.getWrapper().subscribeInteractions(this::handle);
     }
 
     public void addInteractions(InteractionHandler interactionHandler) {
         for (Method method : interactionHandler.getClass().getMethods()) {
-            InteractionMethod iMethod = InteractionMethod.create(method, interactionHandler, wrapper);
+            InteractionMethod iMethod = InteractionMethod.create(method, interactionHandler, marinara);
             if (iMethod != null)
                 this.interactionMethods.add(iMethod);
         }
@@ -48,12 +48,12 @@ public class InteractionRegistry {
                 defs.add(new SlashCommandDefinition(def.applicationCommand()).addExecutableCommand(def));
         });
 
-        wrapper.registerSlashCommands(defs.toArray(new SlashCommandDefinition[0]));
+        marinara.getWrapper().registerSlashCommands(defs.toArray(new SlashCommandDefinition[0]));
     }
 
     public void handle(Object context) {
         interactionMethods.forEach((m) -> {
-            InteractionType type = wrapper.getInteractionType(context.getClass());
+            InteractionType type = marinara.getWrapper().getInteractionType(context.getClass());
             if (m.getType().equals(type))
                 m.run(context);
         });

lib/src/main/java/net/tomatentum/marinara/util/ReflectionUtil.java

@@ -2,9 +2,10 @@ package net.tomatentum.marinara.util;
 
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Method;
-
-import net.tomatentum.marinara.interaction.commands.annotation.SlashCommand;
-import net.tomatentum.marinara.interaction.commands.annotation.SubCommand;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
 
 public final class ReflectionUtil {
 
@@ -21,19 +22,78 @@ public final class ReflectionUtil {
             method.getDeclaringClass().getAnnotation(annotationClass);
     }
 
-    public static void checkValidCommandMethod(Method method) {
-        if (method.isAnnotationPresent(SlashCommand.class) && 
-            method.getDeclaringClass().isAnnotationPresent(SlashCommand.class)) {
-            throw new RuntimeException(method.getName() + ": Can't have ApplicationCommand Annotation on Class and Method");
+    public static int getCastDepth(Class<?> child, Class<?> parent) {
+        if (!parent.isAssignableFrom(child)) {
+            throw new IllegalArgumentException("The specified class is not a child class of the specified parent.");
         }
 
-        if (!isAnnotationPresent(method, SlashCommand.class))
-            throw new RuntimeException(method.getName() + ": Missing ApplicationCommand Annotation on either Class or Method");
+        int depth = 0;
+        Class<?> curr = child;
+        List<Class<?>> parents = new ArrayList<>();
 
-        if ((method.isAnnotationPresent(SubCommand.class) && 
-            !isAnnotationPresent(method, SlashCommand.class))) {
-            throw new RuntimeException(method.getName() + ": Missing ApplicationCommand Annotation on either Method or Class");
+        while (!curr.equals(parent)) {
+            depth++;
+            parents.add(curr.getSuperclass());
+            parents.addAll(Arrays.asList(curr.getInterfaces()));
+
+            for (Class<?> currParent : parents) {
+                if (currParent != null && parent.isAssignableFrom(currParent)) {
+                    curr = currParent;
+                    break;
+                }
+            }
+            parents.clear();
         }
+
+        return depth;
     }
     
+    public static Method getMostSpecificMethod(Method[] methods, Class<?>... parameters) {
+        List<Method> compatibleMethods = Arrays.stream(methods)
+            .filter(x -> isMethodCallable(x, parameters))
+            .toList();
+
+        if (compatibleMethods.size() == 0)
+            throw new IllegalArgumentException("There are no compatible Methods provided");
+
+        for (int i = 0; i < parameters.length; i++) {
+            final int currI = i;
+            Class<?>[] parameterTypes = compatibleMethods.stream()
+                .map(x -> x.getParameterTypes()[currI])
+                .toArray(x -> new Class[x]);
+
+            Class<?> mostSpecific = getMostSpecificClass(parameterTypes, parameters[i]);
+
+            compatibleMethods = compatibleMethods.stream()
+                .filter(x -> Objects.equals(x.getParameterTypes()[currI], mostSpecific))
+                .toList();
+        }
+        
+        return compatibleMethods.getFirst();
+    }
+
+    public static Class<?> getMostSpecificClass(Class<?>[] classes, Class<?> base) {
+        int min = Integer.MAX_VALUE;
+        Class<?> currMostSpecific = null;
+        for (Class<?> currClass : classes) {
+            int currCastDepth = getCastDepth(base, currClass);
+            if (currCastDepth < min) {
+                min = currCastDepth;
+                currMostSpecific = currClass;
+            }
+        }
+        return currMostSpecific;
+    }
+
+    public static boolean isMethodCallable(Method method, Class<?>... parameters) {
+        if (!Objects.equals(method.getParameterCount(), parameters.length))
+            return false;
+
+        Class<?>[] methodParams = method.getParameterTypes();
+        for (int i = 0; i < parameters.length; i++) {
+            if (!methodParams[i].isAssignableFrom(parameters[i]))
+                return false;
+        }
+        return true;
+    }
 }