add 'show indicators when active' option to streamer mode config

Author: iLynxcat

src/main/java/org/modernbeta/admintoolbox/AdminToolboxPlugin.java

@@ -190,11 +190,13 @@ public Configuration getConfigDefaults() {
 			streamerMode.set("allow", true);
 			streamerMode.set("max-duration", 720d); // 720 minutes = 12 hours default max duration
 			streamerMode.set("disable-permissions", List.of("admintoolbox.broadcast.receive"));
+			streamerMode.set("show-indicators-when-active", false);
 
 			// docs
 			streamerMode.setInlineComments("allow", List.of("Enable or disable usage of streamer mode. 'true' is enabled, 'false' is disabled"));
 			streamerMode.setInlineComments("max-duration", List.of("The maximum duration a player can enable streamer mode for, in minutes."));
 			streamerMode.setInlineComments("disable-permissions", List.of("The list of permissions to disable for the given time period."));
+			streamerMode.setInlineComments("show-indicators-when-active", List.of("Should players see the streamer mode placeholder while in streamer mode? (See https://github.com/ModernBetaNetwork/AdminToolbox#placeholder)"));
 		}
 
 		return defaults;

src/main/java/org/modernbeta/admintoolbox/integration/placeholderapi/expansion/StreamerModePlaceholder.java

@@ -6,8 +6,10 @@
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.modernbeta.admintoolbox.AdminToolboxPlugin;
+import org.modernbeta.admintoolbox.managers.StreamerModeManager;
 
 import javax.annotation.Nullable;
+import java.util.Optional;
 
 public class StreamerModePlaceholder extends PlaceholderExpansion implements Relational {
 	private final AdminToolboxPlugin plugin;
@@ -44,11 +46,20 @@ public boolean persist() {
 	@Override
 	public String onPlaceholderRequest(Player viewer, Player wearer, String identifier) {
 		if (viewer == null || wearer == null) return "";
+
+		Optional<StreamerModeManager> streamerModeManager = plugin.getStreamerModeManager();
+
+		// hide placeholder from players currently in streamer mode
+		if (!plugin.getConfig().getBoolean("streamermode.show-indicators-when-active", false)
+			&& streamerModeManager.map(sm ->
+				sm.isActive(viewer))
+			.orElse(false)) return "";
+
 		if (!viewer.hasPermission(SM_VIEW_PERMISSION)) return "";
 		if (!wearer.hasPermission(SM_WEAR_PERMISSION)) return "";
 
-		boolean isActive = plugin.getStreamerModeManager()
-			.map(sm -> sm.isActive(wearer))
+		boolean isActive = streamerModeManager.map(sm ->
+				sm.isActive(wearer))
 			.orElse(false);
 		if (!isActive) return "";