some stuff

pom.xml

@@ -54,6 +54,10 @@
     </build>
 
     <repositories>
+        <repository>
+            <id>jitpack</id>
+            <url>https://jitpack.io</url>
+        </repository>
         <repository>
             <id>papermc-repo</id>
             <url>https://papermc.io/repo/repository/maven-public/</url>
@@ -62,6 +66,10 @@
             <id>sonatype</id>
             <url>https://oss.sonatype.org/content/groups/public/</url>
         </repository>
+        <repository>
+            <id>placeholderapi</id>
+            <url>https://repo.extendedclip.com/content/repositories/placeholderapi/</url>
+        </repository>
     </repositories>
 
     <dependencies>
@@ -83,5 +91,17 @@
             <version>0.9.12</version>
             <scope>compile</scope>
         </dependency>
+        <dependency>
+            <groupId>com.github.dmulloy2</groupId>
+            <artifactId>ProtocolLib</artifactId>
+            <version>4.5.1</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>me.clip</groupId>
+            <artifactId>placeholderapi</artifactId>
+            <version>2.10.9</version>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
 </project>

src/main/java/io/github/paldiu/simplexcore/listener/ServerPluginListener.java

@@ -2,16 +2,44 @@ package io.github.paldiu.simplexcore.listener;
 
 import io.github.paldiu.simplexcore.plugin.SimplexAddon;
 import io.github.paldiu.simplexcore.utils.Constants;
+import io.github.paldiu.simplexcore.utils.Utilities;
+import io.github.paldiu.simplexcore.utils.Validate;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.server.PluginEnableEvent;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public final class ServerPluginListener extends SimplexListener {
+    public List<String> PAPI_NAMES = new ArrayList<>(){{
+        add("PlaceholderAPI");
+        add("PlaceHolderAPI");
+        add("placeholderapi");
+        add("PLACEHOLDERAPI");
+        add("PAPI");
+        add("papi");
+    }};
+
+    public List<String> PLIB_NAMES = new ArrayList<>(){{
+        add("ProtocolLib");
+        add("PLib");
+        add("Protocollib");
+        add("plib");
+    }};
+
     @EventHandler
     public void pluginRegister(PluginEnableEvent event) {
-        if (SimplexAddon.class.isAssignableFrom(event.getPlugin().getClass())) {
+        Validate temp = () -> {
-            if (!Constants.getRegistry().getComponents().contains(event.getPlugin())) {
+            if (PLIB_NAMES.contains(event.getPlugin().getName())) {
-                Constants.getRegistry().getComponents().add((SimplexAddon<?>) event.getPlugin());
+                return true;
             }
+
+            return PAPI_NAMES.contains(event.getPlugin().getName());
+        };
+
+        if (temp.isValid()) {
+
         }
+
     }
 }

src/main/java/io/github/paldiu/simplexcore/plugin/DependencyManagement.java

@@ -0,0 +1,7 @@
+package io.github.paldiu.simplexcore.plugin;
+
+public class DependencyManagement {
+    public DependencyManagement() {
+
+    }
+}

src/main/java/io/github/paldiu/simplexcore/utils/Complete.java

@@ -0,0 +1,6 @@
+package io.github.paldiu.simplexcore.utils;
+
+@FunctionalInterface
+public interface Complete<Void> {
+    void toComplete(Void complete);
+}

src/main/java/io/github/paldiu/simplexcore/utils/Utilities.java

@@ -32,4 +32,8 @@ public final class Utilities {
     public static <K, V> void mapFE(Map<K, V> map, BiConsumer<K, V> actions) {
         map.forEach(actions);
     }
+
+    public static boolean isValid(Validate validate) {
+        return validate.isValid();
+    }
 }

src/main/java/io/github/paldiu/simplexcore/utils/Validate.java

@@ -0,0 +1,6 @@
+package io.github.paldiu.simplexcore.utils;
+
+@FunctionalInterface
+public interface Validate {
+    boolean isValid();
+}