add placeholderapi hook

src/main/java/me/youhavetrouble/preventstabby/PreventStabby.java

@@ -2,6 +2,7 @@ package me.youhavetrouble.preventstabby;
 
 import me.youhavetrouble.preventstabby.commands.MainCommand;
 import me.youhavetrouble.preventstabby.config.ConfigCache;
+import me.youhavetrouble.preventstabby.hooks.PlacoholderApiHook;
 import me.youhavetrouble.preventstabby.hooks.WorldGuardHook;
 import me.youhavetrouble.preventstabby.players.PlayerManager;
 import me.youhavetrouble.preventstabby.players.SmartCache;
@@ -77,6 +78,10 @@ public final class PreventStabby extends JavaPlugin {
             worldGuardHook = false;
         }
 
+        if (getServer().getPluginManager().getPlugin("PlaceholderAPI") != null) {
+            new PlacoholderApiHook(this).register();
+        }
+
         Metrics metrics = new Metrics(this, 14074);
     }
 

src/main/java/me/youhavetrouble/preventstabby/config/ConfigCache.java

@@ -20,7 +20,8 @@ public class ConfigCache {
     @Getter private final String pvp_enabled, pvp_disabled, cannot_attack_victim, cannot_attack_attacker,
             cannot_attack_pets_victim, cannot_attack_pets_attacker, no_permission, no_such_command, pvp_enabled_other,
             pvp_disabled_other, punish_for_combat_logout_message, entering_combat, leaving_combat,
-            cant_do_that_during_combat, cannot_attack_mounts_attacker, cannot_attack_mounts_victim;
+            cant_do_that_during_combat, cannot_attack_mounts_attacker, cannot_attack_mounts_victim,
+            placeholder_combat_time, placeholder_not_in_combat;
     @Getter private final double lava_and_fire_stopper_radius;
     @Getter private final long cache_time, combat_time, login_protection_time, teleport_protection_time;
     @Getter private final Set<String> combatBlockedCommands = new HashSet<>();
@@ -82,6 +83,8 @@ public class ConfigCache {
                 addDefault("messages.entering_combat", "&cEntering combat");
                 addDefault("messages.leaving_combat", "&cLeaving combat");
                 addDefault("messages.cant_do_that_during_combat", "&cYou can't do that while in combat!");
+                addDefault("placeholder.placeholder_combat_time", "Combat time: %time%");
+                addDefault("placeholder.not_in_combat", "Not in combat");
             }
         };
 
@@ -135,6 +138,9 @@ public class ConfigCache {
         this.entering_combat = config.getString("messages.entering_combat", "&cEntering combat");
         this.leaving_combat = config.getString("messages.leaving_combat", "&cLeaving combat");
         this.cant_do_that_during_combat = config.getString("messages.cant_do_that_during_combat", "&cYou can't do that while in combat!");
+
+        this.placeholder_combat_time = config.getString("placeholder.placeholder_combat_time", "Combat time: %time%");
+        this.placeholder_not_in_combat = config.getString("placeholder.not_in_combat", "Not in combat");
     }
 
 

src/main/java/me/youhavetrouble/preventstabby/hooks/PlacoholderApiHook.java

@@ -0,0 +1,53 @@
+package me.youhavetrouble.preventstabby.hooks;
+
+import me.clip.placeholderapi.expansion.PlaceholderExpansion;
+import me.youhavetrouble.preventstabby.PreventStabby;
+import me.youhavetrouble.preventstabby.util.PluginMessages;
+import org.bukkit.OfflinePlayer;
+import org.jetbrains.annotations.NotNull;
+
+import java.time.Instant;
+import java.util.UUID;
+
+public class PlacoholderApiHook extends PlaceholderExpansion {
+
+    private final PreventStabby plugin;
+
+    public PlacoholderApiHook(PreventStabby preventStabby) {
+        plugin = preventStabby;
+    }
+
+    @Override
+    public @NotNull String getIdentifier() {
+        return "preventstabby";
+    }
+
+    @Override
+    public @NotNull String getAuthor() {
+        return plugin.getDescription().getAuthors().get(0);
+    }
+
+    @Override
+    public @NotNull String getVersion() {
+        return plugin.getDescription().getVersion();
+    }
+
+    @Override
+    public String onRequest(OfflinePlayer player, String params) {
+        if (params.equalsIgnoreCase("combat_time")) {
+            return getCombatTimePlaceholder(player.getUniqueId());
+        }
+        return null;
+    }
+
+    private String getCombatTimePlaceholder(UUID uuid) {
+        long seconds = plugin.getPlayerManager().getPlayer(uuid).getCombattime() - Instant.now().getEpochSecond();
+        if (seconds > 0) {
+            String msg = plugin.getConfigCache().getPlaceholder_combat_time();
+            msg = msg.replaceAll("%time%", String.valueOf(seconds));
+            return PluginMessages.parseMessage(msg);
+        }
+        return PluginMessages.parseMessage(plugin.getConfigCache().getPlaceholder_not_in_combat());
+    }
+
+}

src/main/java/me/youhavetrouble/preventstabby/util/PluginMessages.java

@@ -1,5 +1,7 @@
 package me.youhavetrouble.preventstabby.util;
 
+import me.clip.placeholderapi.PlaceholderAPI;
+import me.youhavetrouble.preventstabby.PreventStabby;
 import net.md_5.bungee.api.ChatMessageType;
 import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.api.chat.TextComponent;
@@ -9,16 +11,18 @@ import org.bukkit.entity.Player;
 
 import java.util.UUID;
 
-
 public class PluginMessages {
 
     public static String parseMessage(String message) {
-        //TODO PAPI support
         return ChatColor.translateAlternateColorCodes('&', message);
     }
 
     public static void sendMessage(Player player, String message) {
-        String parsedMessage = ChatColor.translateAlternateColorCodes('&', message);
+        String parsedMessage = message;
+        if (PreventStabby.getPlugin().getServer().getPluginManager().getPlugin("PlaceholderAPI") != null) {
+            parsedMessage = PlaceholderAPI.setPlaceholders(player, parsedMessage);
+        }
+        parsedMessage = ChatColor.translateAlternateColorCodes('&', parsedMessage);
         player.sendMessage(parsedMessage);
     }
 
@@ -29,10 +33,9 @@ public class PluginMessages {
     }
 
     public static void sendActionBar(UUID uuid, String message) {
-        try {
-            Player player = Bukkit.getPlayer(uuid);
-            sendActionBar(player, message);
-        } catch (NullPointerException ignored) {}
+        Player player = Bukkit.getPlayer(uuid);
+        if (player == null) return;
+        sendActionBar(player, message);
     }
 
     public static String parsePlayerName(Player player, String message) {