implement update version check

build.gradle

@@ -5,7 +5,7 @@ plugins {
 }
 
 group = 'org.evlis'
-version = '0.4.2'
+version = '1.0.0'
 
 def targetJavaVersion = 21
 

src/main/java/org/evlis/lunamatic/GlobalVars.java

@@ -7,8 +7,10 @@
 import java.util.Map;
 
 public class GlobalVars {
-    // Test flag, makes every night a bloodmoon if true
+    // Test flag
     public static Boolean debug = false;
+    // Check for updates?
+    public static Boolean checkUpdates = true;
     // enabled moons:
     public static Boolean fullMoonEnabled = true;
     public static Boolean harvestMoonEnabled = true;

src/main/java/org/evlis/lunamatic/Lunamatic.java

@@ -1,13 +1,22 @@
 package org.evlis.lunamatic;
 
 import co.aikar.commands.PaperCommandManager;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
 import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
 import org.bukkit.Bukkit;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.evlis.lunamatic.commands.LumaCommand;
 import org.evlis.lunamatic.events.*;
 import org.evlis.lunamatic.triggers.Scheduler;
 
+import java.io.InputStreamReader;
+import java.lang.module.ModuleDescriptor;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
 public final class Lunamatic extends JavaPlugin {
 
     //private final ConsoleCommandSender consoleLogger = getServer().getConsoleSender();
@@ -18,12 +27,27 @@ public final class Lunamatic extends JavaPlugin {
     public EntitySpawn entitySpawn;
     //public final Logger logger = this.getLogger();
     //public final File configFile = new File(this.getDataFolder(), "config.yml");
+    private static final String REQUIRED_VERSION = "1.21";
+    private static final String API_URL = "https://api.modrinth.com/v2/project/lunamatic/version";
 
     @Override
     public void onEnable() {
-        //consoleLogger.sendMessage(MiniMessage.miniMessage().deserialize(""));
-        // Plugin startup logic
+        // Begin Initialization
+        this.getComponentLogger().debug(Component.text("Loading Lunamatic...", NamedTextColor.GOLD));
+        // Get versions
+        String serverVersion = getServer().getMinecraftVersion();
+        String currentVersion = this.getPluginMeta().getVersion();
+        // Check server version, log error if not supported.
+        if (!serverVersion.startsWith(REQUIRED_VERSION)) {
+            this.getComponentLogger().error(Component.text("Unsupported server version: " + serverVersion, NamedTextColor.RED));
+        }
+        // Config Initialization
         saveDefaultConfig();
+        loadGlobalConfig();
+        // Update check
+        if (GlobalVars.checkUpdates) {
+            checkForUpdates(currentVersion);
+        }
         // Class Initialization
         Scheduler schedule = new Scheduler();
         timeSkip = new TimeSkip();
@@ -37,14 +61,16 @@ public void onEnable() {
         Bukkit.getServer().getPluginManager().registerEvents(playerSleep, this);
         Bukkit.getServer().getPluginManager().registerEvents(entitySpawn, this);
         registerCommands();
-        loadGlobalConfig();
+
         schedule.GetOmens(this);
+        // Notify of successful plugin start
+        this.getComponentLogger().debug(Component.text("Successfully enabled Lunamatic v" + currentVersion, NamedTextColor.GOLD));
     }
 
     @Override
     public void onDisable() {
         // Plugin shutdown logic
-        this.getComponentLogger().debug(Component.text("Lunamatic has been disabled."));
+        this.getComponentLogger().debug(Component.text("Lunamatic has been disabled.", NamedTextColor.GOLD));
     }
 
     public void registerCommands() {
@@ -55,6 +81,8 @@ public void registerCommands() {
     public void loadGlobalConfig() {
         try {
             reloadConfig();
+            // plugin vars
+            GlobalVars.checkUpdates = getConfig().getBoolean("checkForUpdates");
             // moons enabled
             GlobalVars.disabledWorlds = getConfig().getStringList("disabledWorlds");
             GlobalVars.fullMoonEnabled = getConfig().getBoolean("fullMoonEnabled");
@@ -68,4 +96,35 @@ public void loadGlobalConfig() {
             getLogger().severe("Failed to load configuration: " + e.getMessage());
         }
     }
+
+    public void checkForUpdates(String currentVersionString) {
+        getLogger().info("Checking for updates...");
+        try {
+            // Open a connection to the API
+            HttpURLConnection connection = (HttpURLConnection) new URL(API_URL).openConnection();
+            connection.setRequestMethod("GET");
+            connection.setRequestProperty("Accept", "application/json");
+            connection.setRequestProperty("Content-Type", "application/json");
+
+            // Parse the response
+            InputStreamReader reader = new InputStreamReader(connection.getInputStream());
+            JsonArray jsonArray = JsonParser.parseReader(reader).getAsJsonArray();
+
+            // Get the first item in the JSON array
+            JsonElement latestVersionElement = jsonArray.get(0);
+            String latestVersionString = latestVersionElement.getAsJsonObject().get("version_number").getAsString();
+
+            // Compare versions
+            ModuleDescriptor.Version latestVersion = ModuleDescriptor.Version.parse(latestVersionString);
+            ModuleDescriptor.Version currentVersion = ModuleDescriptor.Version.parse(currentVersionString);
+            if (currentVersion.compareTo(latestVersion) < 0) {
+                this.getComponentLogger().debug(Component.text("New Version " + latestVersionString + " available (you are on v" +  currentVersionString + ")! Download here: https://modrinth.com/plugin/lunamatic", NamedTextColor.GOLD));
+            }
+
+            reader.close();
+            connection.disconnect();
+        } catch (Exception e) {
+            this.getComponentLogger().error(Component.text("Unable to check for updates: " + e.getMessage(), NamedTextColor.RED));
+        }
+    }
 }

src/main/resources/config.yml

@@ -1,19 +1,21 @@
 ### Lunamatic configuration ###
-# Choose which moon effects to enable,
-# for blood moons, new moon must be enabled,
-# and for harvest moons the full moon must be enabled.
+# Choose which moon effects to enable
 fullMoonEnabled: true
 newMoonEnabled: true
+## Ignored unless fullMoonEnabled == true
 harvestMoonEnabled: true
+## Ignored unless newMoonEnabled == true
 bloodMoonEnabled: true
-### Chance for Blood and Harvest Moons ###
+# Chance for Blood and Harvest Moons ###
 # This sets the number of sides in the dice roll,
-# e.g. 2 = cointoss (50/50), 6 = normal die (17% chance)
+# e.g. 2 = coin-toss (50/50), 6 = normal die (17% chance)
 bloodMoonDieSides: 2
 harvestMoonDieSides: 2
-### Set worlds to disable moon-effects on ###
-# by default both nether & the_end cannot have moon effects
+# Set worlds to disable moon-effects on ###
+# by design both nether & the_end cannot have moon effects
 disabledWorlds:
   - world
   - world_nether
-  - world_the_end
+  - world_the_end
+# Do you want to check for updates at server start?
+checkForUpdates: true