Initial commit

src/main/java/dev/plex/fossil/Fossil.java

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+package dev.plex.fossil;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Server;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.net.URL;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
+
+public final class Fossil extends JavaPlugin {
+
+    public static Fossil plugin;
+    public static Server server;
+
+    @Override
+    public void onEnable() {
+        plugin = this;
+        server = plugin.getServer();
+        getCommand("fossil").setExecutor(new FossilCommand());
+    }
+
+    @Override
+    public void onDisable() {
+    }
+
+    public void downloadFile(String url, File output, boolean verbose) throws java.lang.Exception
+    {
+        try
+        {
+            final var website = new URL(url);
+            ReadableByteChannel rbc = Channels.newChannel(website.openStream());
+            FileOutputStream fos = new FileOutputStream(output);
+            fos.getChannel().transferFrom(rbc, 0, 1 << 24);
+            fos.close();
+
+            if (verbose)
+            {
+                getLogger().info("Downloaded " + url + " to " + output + ".");
+            }
+        }
+        catch (FileNotFoundException ex)
+        {
+            getLogger().info(url + " does not exist.");
+        }
+
+    }
+
+    public String getPlugin(String pluginName)
+    {
+        return "https://fossil.plex.us.org/" + getNMSVersion() + "/" + pluginName + ".jar";
+        // Example: https://updater.telesphoreo.me/v1_14_R1/WorldEdit.jar
+    }
+
+    public String getNMSVersion()
+    {
+        return Bukkit.getServer().getClass().getPackage().getName().replace(".", ",").split(",")[3];
+    }
+}

src/main/java/dev/plex/fossil/FossilCommand.java

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+package dev.plex.fossil;
+
+import java.io.File;
+import java.util.List;
+
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.scheduler.BukkitRunnable;
+
+public class FossilCommand implements CommandExecutor, IFossil {
+    private final List<String> FILES = plugin.getConfig().getStringList("plugins");
+
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String s, String[] args) {
+        if (args.length == 0) {
+            sender.sendMessage(Component.text("This server is running Fossil to keep plugins in sync."));
+            sender.sendMessage(Component.text("Source code available at https://github.com/plexusorg/Fossil"));
+            return true;
+        }
+
+        if (args.length > 1) {
+            if (!sender.hasPermission("fossil.update")) {
+                sender.sendMessage(Component.text("You do not have permission to use this command!").color(NamedTextColor.RED));
+                return true;
+            }
+            sender.sendMessage(Component.text("Updating server plugins").color(NamedTextColor.GRAY));
+
+            new BukkitRunnable() {
+                @Override
+                public void run() {
+                    try {
+                        for (final String url : FILES) {
+                            logger.info("Downloading: " + url);
+
+                            File file = new File("./plugins/update/" + url.substring(url.lastIndexOf("/") + 1));
+                            if (file.exists()) {
+                                file.delete();
+                            }
+                            if (!file.getParentFile().exists()) {
+                                file.getParentFile().mkdirs();
+                            }
+
+                            plugin.downloadFile(url, file, true);
+                        }
+                        sender.sendMessage(Component.text("Successfully updated. Restart the server to apply changes.").color(NamedTextColor.GRAY));
+                    } catch (Exception ex) {
+                        logger.severe(ex.toString());
+                    }
+                }
+            }.runTaskAsynchronously(plugin);
+        }
+        return true;
+    }
+}

src/main/java/dev/plex/fossil/IFossil.java

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+package dev.plex.fossil;
+
+import java.util.logging.Logger;
+
+public interface IFossil {
+    Fossil plugin = Fossil.plugin;
+    Logger logger = plugin.getLogger();
+}

src/main/resources/config.yml

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+plugins:
+  - CoreProtect
+  - DiscordSRV
+  - DrMap
+  - LibsDisguises
+  - EssentialsX
+  - EssentialsXSpawn
+  - Plex-FAWE
+  - ItemizerX
+  - LibsDisguises
+  - LuckPerms
+  - Plan
+  - ProtocolLib
+  - spark
+  - Vault
+  - WorldGuard

src/main/resources/plugin.yml

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+name: Fossil
+version: '${version}'
+main: dev.plex.fossil.Fossil
+api-version: 1.20