feat: (Re-) Add update notifications (#1361)

* feat: (Re-) Add update notifications

Fixes #1348

* Move update notification to seperate class

- Add a couple of linebreaks to the chat messages

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/util/UpdateNotification.java

@@ -0,0 +1,83 @@
+package com.fastasyncworldedit.bukkit.util;
+
+import com.fastasyncworldedit.core.Fawe;
+import com.fastasyncworldedit.core.FaweVersion;
+import com.fastasyncworldedit.core.configuration.Caption;
+import com.fastasyncworldedit.core.configuration.Settings;
+import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import com.sk89q.worldedit.util.formatting.text.TextComponent;
+import com.sk89q.worldedit.util.formatting.text.event.ClickEvent;
+import org.apache.logging.log4j.Logger;
+import org.w3c.dom.Document;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import java.net.URL;
+
+/**
+ * @hidden
+ */
+public class UpdateNotification {
+
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
+
+    private static boolean hasUpdate;
+    private static String faweVersion = "";
+
+    /**
+     * Check whether a new build with a higher build number than the current build is available.
+     */
+    public static void doUpdateCheck() {
+        if (Settings.IMP.ENABLED_COMPONENTS.UPDATE_NOTIFICATIONS) {
+            try {
+                DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+                DocumentBuilder db = dbf.newDocumentBuilder();
+                Document doc = db.parse(new URL("https://ci.athion.net/job/FastAsyncWorldEdit-1.17/api/xml/").openStream());
+                faweVersion = doc.getElementsByTagName("lastSuccessfulBuild").item(0).getFirstChild().getTextContent();
+                FaweVersion faweVersion = Fawe.get().getVersion();
+                if (faweVersion.build == 0) {
+                    LOGGER.warn("You are using a snapshot or a custom version of FAWE. This is not an official build distributed " +
+                            "via https://www.spigotmc.org/resources/13932/");
+                    return;
+                }
+                if (faweVersion.build < Integer.parseInt(UpdateNotification.faweVersion)) {
+                    hasUpdate = true;
+                    int versionDifference = Integer.parseInt(UpdateNotification.faweVersion) - faweVersion.build;
+                    LOGGER.warn(
+                            "An update for FastAsyncWorldEdit is available. You are {} build(s) out of date.\nYou are running " +
+                                    "version {}, the latest version is {}-{}.\nUpdate at https://www.spigotmc.org/resources/13932/",
+                            versionDifference,
+                            faweVersion.toString(),
+                            faweVersion.getSimpleVersionName(),
+                            UpdateNotification.faweVersion
+                    );
+                }
+            } catch (Exception e) {
+                LOGGER.error("Unable to check for updates. Skipping.");
+            }
+
+        }
+    }
+
+    /**
+     * Trigger an update notification based on captions. Useful to notify server administrators ingame.
+     *
+     * @param player The player to notify.
+     */
+    public static void doUpdateNotification(Player player) {
+        if (Settings.IMP.ENABLED_COMPONENTS.UPDATE_NOTIFICATIONS) {
+            if (player.hasPermission("fawe.admin") && UpdateNotification.hasUpdate) {
+                FaweVersion faweVersion = Fawe.get().getVersion();
+                int versionDifference = Integer.parseInt(UpdateNotification.faweVersion) - faweVersion.build;
+                player.print(Caption.of("fawe.info.update-available", versionDifference, faweVersion.toString(),
+                        faweVersion.getSimpleVersionName() + "-" + UpdateNotification.faweVersion,
+                        TextComponent
+                                .of("https://www.spigotmc.org/resources/13932/")
+                                .clickEvent(ClickEvent.openUrl("https://www.spigotmc.org/resources/13932/"))
+                ));
+            }
+        }
+    }
+
+}

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/WorldEditListener.java

@@ -21,6 +21,7 @@
 
 package com.sk89q.worldedit.bukkit;
 
+import com.fastasyncworldedit.bukkit.util.UpdateNotification;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.entity.Player;
@@ -90,6 +91,7 @@ public class WorldEditListener implements Listener {
         if ((session = WorldEdit.getInstance().getSessionManager().getIfPresent(player)) != null) {
             session.loadDefaults(player, true);
         }
+        UpdateNotification.doUpdateNotification(player);
     }
     //FAWE end
 

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/WorldEditPlugin.java

@@ -21,6 +21,7 @@ package com.sk89q.worldedit.bukkit;
 
 import com.fastasyncworldedit.bukkit.BukkitPermissionAttachmentManager;
 import com.fastasyncworldedit.bukkit.FaweBukkit;
+import com.fastasyncworldedit.bukkit.util.UpdateNotification;
 import com.fastasyncworldedit.core.Fawe;
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableList;
@@ -223,6 +224,8 @@ public class WorldEditPlugin extends JavaPlugin {
         ServerLib.checkJavaLTS();
         // Check if we are in a safe environment
         ServerLib.checkUnsafeForks();
+        // Check if a new build is available
+        UpdateNotification.doUpdateCheck();
     }
 
     private void setupPreWorldData() {

worldedit-core/src/main/java/com/fastasyncworldedit/core/FaweVersion.java

@@ -2,6 +2,8 @@ package com.fastasyncworldedit.core;
 
 /**
  * An internal FAWE class not meant for public use.
+ *
+ * @hidden
  **/
 public class FaweVersion {
 
@@ -46,12 +48,19 @@ public class FaweVersion {
     @Override
     public String toString() {
         if (hash == 0 && build == 0) {
-            return "FastAsyncWorldEdit-1.17-NoVer-SNAPSHOT";
+            return getSimpleVersionName() + "-NoVer-SNAPSHOT";
         } else {
-            return "FastAsyncWorldEdit-1.17" + build;
+            return getSimpleVersionName() + "-" + build;
         }
     }
 
+    /**
+     * @return The qualified version name
+     */
+    public String getSimpleVersionName() {
+        return "FastAsyncWorldEdit-1.17";
+    }
+
     public boolean isNewer(FaweVersion other) {
         return other.build < this.build;
     }

worldedit-core/src/main/java/com/fastasyncworldedit/core/configuration/Settings.java

@@ -92,6 +92,8 @@ public class Settings extends Config {
         @Comment({"Show additional information in console. It helps us at IntellectualSites to find out more about an issue.",
                 "Leave it off if you don't need it, it can spam your console."})
         public boolean DEBUG = false;
+        @Comment({"Whether or not FAWE should notify you on startup about new versions available."})
+        public boolean UPDATE_NOTIFICATIONS = true;
 
     }
 

worldedit-core/src/main/resources/lang/strings.json

@@ -15,7 +15,8 @@
 	"fawe.info.worldedit.bypassed": "Currently bypassing FAWE restriction.",
 	"fawe.info.worldedit.restricted": "Your FAWE edits are now restricted.",
 	"fawe.info.worldedit.oom.admin": "Possible options:\n - //fast\n - Do smaller edits\n - Allocate more memory\n - Disable `max-memory-percent`",
-    	"fawe.info.temporarily-not-working": "Temporarily not working",
+    "fawe.info.temporarily-not-working": "Temporarily not working",
+    "fawe.info.update-available": "An update for FastAsyncWorldEdit is available. You are {0} build(s) out of date.\nYou are running version {1}, the latest version is {2}.\nUpdate at {3}",
 
 	"fawe.web.generating.link": "Uploading {0}, please wait...",
 	"fawe.web.generating.link.failed": "Failed to generate download link!",