Implement basic PlaceholderAPI support

src/main/java/wtf/beatrice/nounspicker/NounsPicker.java

@@ -1,18 +1,36 @@
 package wtf.beatrice.nounspicker;
 
+import org.bukkit.Bukkit;
 import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.java.JavaPlugin;
+import wtf.beatrice.nounspicker.objects.PAPIManager;
 
 import java.util.logging.Level;
 
 public class NounsPicker extends JavaPlugin
 {
+    private static NounsPicker instance;
     private PluginManager pluginManager;
 
     @Override
     public void onEnable()
     {
         pluginManager = getServer().getPluginManager();
+        instance = this;
+
+
+        // register PlaceholderAPI
+        if(Bukkit.getPluginManager().getPlugin("PlaceholderAPI") != null) {
+            new PAPIManager(this).register();
+        } else {
+            
+        }
+
 
     }
+
+    public static NounsPicker getInstance()
+    {
+        return instance;
+    }
 }

src/main/java/wtf/beatrice/nounspicker/objects/PAPIManager.java

@@ -0,0 +1,62 @@
+package wtf.beatrice.nounspicker.objects;
+
+import me.clip.placeholderapi.expansion.PlaceholderExpansion;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import wtf.beatrice.nounspicker.NounsPicker;
+
+public class PAPIManager extends PlaceholderExpansion
+{
+
+    private final NounsPicker plugin;
+    public PAPIManager(NounsPicker plugin)
+    {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public boolean persist(){
+        return true;
+    }
+
+    @Override
+    public boolean canRegister(){
+        return true;
+    }
+
+    @Override
+    public @NotNull String getIdentifier() {
+        return "nouns";
+    }
+
+    @Override
+    public @NotNull String getAuthor() {
+        return plugin.getDescription().getAuthors().toString();
+    }
+
+    @Override
+    public @NotNull String getVersion() {
+        return plugin.getDescription().getVersion();
+    }
+
+
+    @Override
+    public String onPlaceholderRequest(Player player, @NotNull String identifier) {
+
+        if (player == null) {
+            return "";
+        }
+
+
+        switch (identifier.toLowerCase()) {
+            case "main_pronoun":
+
+                break;
+            case "secondary_pronoun":
+
+                break;
+        }
+
+                return null;
+    }
+}