2.8.5

src/main/java/me/clip/placeholderapi/updatechecker/UpdateChecker.java

@@ -0,0 +1,106 @@
+package me.clip.placeholderapi.updatechecker;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.util.regex.Pattern;
+
+import javax.net.ssl.HttpsURLConnection;
+
+import me.clip.placeholderapi.PlaceholderAPIPlugin;
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+
+/**
+ * thanks maxim
+ */
+public class UpdateChecker implements Listener {
+
+	private PlaceholderAPIPlugin plugin;
+	
+    private final int resourceId = 6245;
+    
+    private static String latestVersion = "";
+    
+    private static boolean updateAvailable = false;
+
+    public UpdateChecker(PlaceholderAPIPlugin i) {
+    	plugin = i;
+    	Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
+            if (checkForUpdate()) {
+                Bukkit.getScheduler().runTask(plugin, () -> {
+                    plugin.getLogger().info("An update for PlaceholderAPI (v" + getLatestVersion() + ") is available at:");
+                    plugin.getLogger().info("https://www.spigotmc.org/resources/placeholderapi." + resourceId + "/");
+                    register();
+                });
+            }
+        });
+    }
+    
+    private void register() {
+    	Bukkit.getPluginManager().registerEvents(this, plugin);
+    }
+    
+    @EventHandler(priority = EventPriority.MONITOR)
+    public void onJoin(PlayerJoinEvent e) {
+    	if (e.getPlayer().isOp()) {
+    		e.getPlayer().sendMessage(ChatColor.translateAlternateColorCodes('&', "&bAn update for &fPlaceholder&7API &e(&fPlaceholder&7API &fv" + getLatestVersion() + "&e)"));
+    		e.getPlayer().sendMessage(ChatColor.translateAlternateColorCodes('&', "&bis available at &ehttps://www.spigotmc.org/resources/placeholderapi." + resourceId + "/"));
+    	}
+    }
+
+    private String getSpigotVersion() {
+        try {
+            HttpsURLConnection con = (HttpsURLConnection) new URL("https://api.spigotmc.org/legacy/update.php?resource=" + resourceId).openConnection();
+            con.setRequestMethod("GET");
+            String version = new BufferedReader(new InputStreamReader(con.getInputStream())).readLine();
+            if (version.length() <= 7) {
+                return version;
+            }
+        } catch (Exception ex) {
+            plugin.getLogger().info("Failed to check for a update on spigot.");
+        }
+        return null;
+    }
+
+    private boolean checkHigher(String currentVersion, String newVersion) {
+        String current = toReadable(currentVersion);
+        String newVers = toReadable(newVersion);
+        return current.compareTo(newVers) < 0;
+    }
+
+    public boolean checkForUpdate() {
+        String version = getSpigotVersion();
+        if (version != null) {
+            if (checkHigher(plugin.getDescription().getVersion(), version)) {
+                latestVersion = version;
+                updateAvailable = true;
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public static boolean updateAvailable() {
+        return updateAvailable;
+    }
+
+    public static String getLatestVersion() {
+        return latestVersion;
+    }
+
+    private String toReadable(String version) {
+        String[] split = Pattern.compile(".", Pattern.LITERAL).split(version.replace("v", ""));
+        version = "";
+        for (String s : split) {
+        	version += String.format("%4s", s);
+        } 
+        return version;
+    }
+	 
+
+}