Merge pull request #4 from Shweit/dvdb/version-checker

Added version Checker

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.shweit</groupId>
     <artifactId>PollMaster</artifactId>
-    <version>1.0</version>
+    <version>1.0.1</version>
     <packaging>jar</packaging>
 
     <name>PollMaster</name>

src/main/java/com/shweit/pollmaster/PollMaster.java

@@ -2,10 +2,12 @@
 
 import com.shweit.pollmaster.commands.CreatePollCommand;
 import com.shweit.pollmaster.commands.DeletePollCommand;
+import com.shweit.pollmaster.commands.VersionCommand;
 import com.shweit.pollmaster.commands.VoteCommand;
 import com.shweit.pollmaster.commands.pollDetailsCommand.PollDetailGuiListener;
 import com.shweit.pollmaster.commands.pollsCommand.PollsCommand;
 import com.shweit.pollmaster.commands.pollsCommand.PollsGuiListener;
+import com.shweit.pollmaster.utils.CheckForUpdate;
 import com.shweit.pollmaster.utils.ConnectionManager;
 import com.shweit.pollmaster.utils.Logger;
 import org.bukkit.configuration.file.FileConfiguration;
@@ -34,8 +36,11 @@ public void onEnable() {
         getCommand("polls").setExecutor(new PollsCommand());
         getCommand("vote").setExecutor(new VoteCommand());
         getCommand("endpoll").setExecutor(new DeletePollCommand());
+        getCommand("pollmaster").setExecutor(new VersionCommand());
+
         getServer().getPluginManager().registerEvents(new PollsGuiListener(), this);
         getServer().getPluginManager().registerEvents(new PollDetailGuiListener(), this);
+        getServer().getPluginManager().registerEvents(new CheckForUpdate(), this);
     }
 
     @Override

src/main/java/com/shweit/pollmaster/commands/VersionCommand.java

@@ -0,0 +1,55 @@
+package com.shweit.pollmaster.commands;
+
+import com.shweit.pollmaster.PollMaster;
+import com.shweit.pollmaster.utils.CheckForUpdate;
+import com.shweit.pollmaster.utils.Logger;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabExecutor;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public final class VersionCommand implements CommandExecutor, TabExecutor {
+
+    @Override
+    public boolean onCommand(final CommandSender commandSender, final Command command, final String s, final String[] args) {
+        Logger.debug("VersionCommand.onCommand()");
+        switch (args[0]) {
+            case "version":
+                commandSender.sendMessage(ChatColor.GREEN + "PollMaster version: " + ChatColor.GOLD + PollMaster.getInstance().getDescription().getVersion());
+                commandSender.sendMessage("");
+                commandSender.sendMessage(ChatColor.GREEN + "Check for updates...");
+
+                // Check for updates
+                CheckForUpdate checkForUpdate = new CheckForUpdate();
+                boolean updateAvailable = checkForUpdate.checkForPluginUpdate();
+                if (updateAvailable) {
+                    commandSender.sendMessage(ChatColor.GREEN + "Update available! New Version: "
+                            + ChatColor.GOLD + PollMaster.getInstance().getDescription().getVersion()
+                            + ChatColor.GREEN + " -> " + ChatColor.GOLD + checkForUpdate.latestVersion
+                    );
+                } else {
+                    commandSender.sendMessage(ChatColor.GREEN + "No updates available.");
+                }
+
+                return true;
+
+            default:
+                return false;
+        }
+    }
+
+    @Override
+    public List<String> onTabComplete(final CommandSender commandSender, final Command command, final String s, final String[] args) {
+        if (args.length == 1) {
+            List<String> subCommands = new ArrayList<>();
+            subCommands.add("version");
+            return subCommands;
+        }
+
+        return new ArrayList<>();
+    }
+}

src/main/java/com/shweit/pollmaster/utils/CheckForUpdate.java

@@ -0,0 +1,84 @@
+package com.shweit.pollmaster.utils;
+
+import com.shweit.pollmaster.PollMaster;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public final class CheckForUpdate implements Listener {
+
+    private static final String GITHUB_API_URL = "https://api.github.com/repos/Shweit/PollMaster/releases/latest";
+    private static final String USER_AGENT = "Mozilla/5.0";
+    public String latestVersion;
+
+    public boolean checkForPluginUpdate() {
+        latestVersion = fetchLatestVersion();
+
+        if (latestVersion != null) {
+            String currentVersion = PollMaster.getInstance().getDescription().getVersion();
+
+            return !latestVersion.equals(currentVersion);
+        } else {
+            Logger.warning("Failed to fetch the latest version from GitHub API.");
+        }
+
+        return false;
+    }
+
+    @EventHandler
+    public void onPlayerJoin(final PlayerJoinEvent event) {
+        if (event.getPlayer().hasPermission("pollmaster.version")) {
+            Logger.debug("Checking for plugin update...");
+            if (checkForPluginUpdate()) {
+                event.getPlayer().sendMessage("§aA new version of the MinecraftServerAPI plugin is available");
+                event.getPlayer().sendMessage("§aCurrent version: §f" + PollMaster.getInstance().getDescription().getVersion());
+                event.getPlayer().sendMessage("§aLatest version: §f" + latestVersion);
+            }
+        }
+    }
+
+    /**
+     * Fetches the latest version from the GitHub API.
+     *
+     * @return the latest version as a String, or null if there was an error.
+     */
+    private String fetchLatestVersion() {
+        try {
+            URL url = new URL(GITHUB_API_URL);
+            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+            connection.setRequestMethod("GET");
+            connection.setRequestProperty("User-Agent", USER_AGENT);
+
+            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
+            StringBuilder content = new StringBuilder();
+            String inputLine;
+            while ((inputLine = in.readLine()) != null) {
+                content.append(inputLine);
+            }
+
+            in.close();
+            connection.disconnect();
+
+            String jsonResponse = content.toString();
+            Pattern pattern = Pattern.compile("\"tag_name\":\"([^\"]+)\"");
+            Matcher matcher = pattern.matcher(jsonResponse);
+
+            if (matcher.find()) {
+                return matcher.group(1);
+            } else {
+                Logger.warning("Tag name not found in the GitHub API response.");
+                return null;
+            }
+        } catch (Exception e) {
+            Logger.error("An error occurred while fetching the latest version: " + e.getMessage());
+            return null;
+        }
+    }
+}

src/main/resources/plugin.yml

@@ -1,7 +1,7 @@
 name: PollMaster
-version: '1.0'
+version: '1.0.1'
 description: A versatile Minecraft plugin that allows players to create, manage, and view polls in-game, providing an engaging way for players to participate in server decisions.
-main: com.shweit.poll.PollMaster
+main: com.shweit.pollmaster.PollMaster
 api-version: '1.21'
 author: Shweit
 
@@ -25,3 +25,7 @@ commands:
     description: End a poll and display the results.
     usage: /endpoll <poll_id>
     permission: pollmaster.end
+
+  pollmaster:
+    description: Show information about the plugin.
+    usage: /pollmaster