Add actual placeholders

src/main/java/dev/esophose/playerparticles/PlayerParticles.java

@@ -16,7 +16,7 @@
  * * Refactored and cleaned up code to remove static abuse
  * * Changed the package names
  * + Config and lang files will no longer reset every update
- * + Added PlaceholderAPI support (no placeholders, just placeholder replacing in messages)
+ * + Added PlaceholderAPI support
  * * Fixed an issue where 'random' data would not parse properly in preset_groups.yml
  * * Fixed an issue where preset groups would not display in the GUI even if the player has permission for them
  */
@@ -24,6 +24,8 @@
 package dev.esophose.playerparticles;
 
 import dev.esophose.playerparticles.gui.hook.PlayerChatHook;
+import dev.esophose.playerparticles.hook.ParticlePlaceholderExpansion;
+import dev.esophose.playerparticles.hook.PlaceholderAPIHook;
 import dev.esophose.playerparticles.manager.CommandManager;
 import dev.esophose.playerparticles.manager.ConfigurationManager;
 import dev.esophose.playerparticles.manager.ConfigurationManager.Setting;
@@ -76,6 +78,9 @@ public class PlayerParticles extends JavaPlugin {
 
         if (Setting.SEND_METRICS.getBoolean())
             new Metrics(this);
+
+        if (PlaceholderAPIHook.enabled())
+            new ParticlePlaceholderExpansion(this).register();
     }
 
     @Override

src/main/java/dev/esophose/playerparticles/hook/ParticlePlaceholderExpansion.java

@@ -0,0 +1,87 @@
+package dev.esophose.playerparticles.hook;
+
+import dev.esophose.playerparticles.PlayerParticles;
+import dev.esophose.playerparticles.manager.DataManager;
+import dev.esophose.playerparticles.particles.PPlayer;
+import dev.esophose.playerparticles.particles.ParticlePair;
+import me.clip.placeholderapi.expansion.PlaceholderExpansion;
+import org.bukkit.ChatColor;
+import org.bukkit.entity.Player;
+
+public class ParticlePlaceholderExpansion extends PlaceholderExpansion {
+
+    private PlayerParticles playerParticles;
+
+    public ParticlePlaceholderExpansion(PlayerParticles playerParticles) {
+        this.playerParticles = playerParticles;
+    }
+
+    @Override
+    public String onPlaceholderRequest(Player p, String placeholder) {
+        if (p == null)
+            return null;
+
+        PPlayer pplayer = this.playerParticles.getManager(DataManager.class).getPPlayer(p.getUniqueId());
+        if (pplayer == null)
+            return null;
+
+        if (placeholder.equals("active_amount")) {
+            return String.valueOf(pplayer.getActiveParticles().size());
+        } else if (placeholder.equals("group_amount")) {
+            return String.valueOf(pplayer.getParticleGroups().size());
+        } else if (placeholder.equals("fixed_amount")) {
+            return String.valueOf(pplayer.getFixedParticles().size());
+        } else if (placeholder.equals("is_moving")) {
+            return String.valueOf(pplayer.isMoving());
+        } else if (placeholder.equals("can_see_particles")) {
+            return String.valueOf(pplayer.canSeeParticles());
+        }
+
+        if (placeholder.startsWith("particle_")) {
+            ParticlePair particle = pplayer.getActiveParticle(this.parseId(placeholder));
+            if (particle == null)
+                return null;
+
+            if (placeholder.startsWith("particle_effect_")) {
+                return particle.getEffect().getName();
+            } else if (placeholder.startsWith("particle_style_")) {
+                return particle.getStyle().getName();
+            } else if (placeholder.startsWith("particle_data_")) {
+                return ChatColor.stripColor(particle.getDataString());
+            }
+        }
+
+        return null;
+    }
+
+    private int parseId(String placeholder) {
+        int lastIndex = placeholder.lastIndexOf('_');
+        String number = placeholder.substring(lastIndex + 1);
+        try {
+            return Integer.parseInt(number);
+        } catch (NumberFormatException e) {
+            return -1;
+        }
+    }
+
+    @Override
+    public boolean persist() {
+        return true;
+    }
+
+    @Override
+    public String getIdentifier() {
+        return PlayerParticles.getInstance().getDescription().getName().toLowerCase();
+    }
+
+    @Override
+    public String getAuthor() {
+        return PlayerParticles.getInstance().getDescription().getAuthors().get(0);
+    }
+
+    @Override
+    public String getVersion() {
+        return PlayerParticles.getInstance().getDescription().getVersion();
+    }
+
+}