Add in-chat update alerts.

src/main/java/net/lewmc/essence/Essence.java

@@ -80,6 +80,11 @@ public class Essence extends JavaPlugin {
      */
     public List<String> disabledCommands;
 
+    /**
+     * Stores update status.
+     */
+    public boolean hasPendingUpdate = false;
+
     /**
      * This function runs when Essence is enabled.
      */

src/main/java/net/lewmc/essence/events/JoinEvent.java

@@ -48,6 +48,10 @@ public void onPlayerJoin(PlayerJoinEvent event) {
             this.spawn(event, log);
         }
 
+        if (this.plugin.hasPendingUpdate) {
+            this.showUpdateAlert(event);
+        }
+
         FileUtil playerFile = new FileUtil(plugin);
         String playerDataFile = playerFile.playerDataFile(event.getPlayer());
 
@@ -178,4 +182,17 @@ private void playerJoinMessage(PlayerJoinEvent event) {
             event.setJoinMessage(tag.doReplacement(this.plugin.getConfig().getString("broadcasts.first-join")));
         }
     }
+
+    /**
+     * Displays the update alert.
+     * @param event PlayerJoinEvent - The event
+     */
+    private void showUpdateAlert(PlayerJoinEvent event) {
+        MessageUtil msg = new MessageUtil(event.getPlayer(), this.plugin);
+        PermissionHandler perms = new PermissionHandler(event.getPlayer(), msg);
+        if (perms.has("essence.admin.updates") && this.plugin.hasPendingUpdate) {
+            msg.send("other", "updatemsg");
+            msg.send("other", "updatemore");
+        }
+    }
 }

src/main/java/net/lewmc/essence/utils/UpdateUtil.java

@@ -56,6 +56,7 @@ public void VersionCheck() {
                         log.warn("UPDATE > Your version: "+this.plugin.getDescription().getVersion()+" - latest version: "+response);
                         log.warn("UPDATE > You can download the latest version from lewmc.net/essence");
                         this.log.info("");
+                        this.plugin.hasPendingUpdate = true;
                     }
                 } else {
                     log.severe("Unable to perform update check: There was no response from the server.");

src/main/resources/language/en-GB.yml

@@ -34,6 +34,8 @@ generic:
 other:
   respawnset: "§6[Essence] §eRespawn point set."
   rule: "§a{{1}}"
+  updatemsg: "§4[Essence] §cYour version of Essence is out of date!"
+  updatemore: "§4[Essence] §cSee the server console for more information."
 help:
   page: "§6[Essence] ----------------- Page {{1}}/{{2}} -----------------"
   inventory: "§6[Essence] --------- Essence Help - Inventory ---------"

src/main/resources/plugin.yml

@@ -512,6 +512,7 @@ permissions:
       essence.admin.reload: true
       essence.admin.import: true
       essence.admin.invisible: true
+      essence.admin.updates: true
   essence.admin.seen:
     description: Allows players to see when the player was last online.
   essence.admin.info:
@@ -522,5 +523,7 @@ permissions:
     description: Allows players to reload Essence.
   essence.admin.invisible:
     description: Toggles invisibility.
+  essence.admin.updates:
+    description: Toggles invisibility.
   essence.rules:
     description: Allows players to view the server rules.