Add backup system

Resolves #4

.gitignore

@@ -21,6 +21,7 @@ hs_err_pid*.log
 
 #Run
 /run
+/backups
 
 # secrets
 **.secret

src/main/java/com/gamebuster19901/excite/Main.java

@@ -11,8 +11,10 @@
 
 import javax.security.auth.login.LoginException;
 
+import com.gamebuster19901.excite.backup.Backup;
 import com.gamebuster19901.excite.bot.DiscordBot;
 import com.gamebuster19901.excite.bot.command.Commands;
+import com.gamebuster19901.excite.bot.command.MessageContext;
 import com.gamebuster19901.excite.bot.server.DiscordServer;
 import com.gamebuster19901.excite.bot.user.DiscordUser;
 import com.gamebuster19901.excite.bot.user.UserPreferences;
@@ -31,6 +33,7 @@ public class Main {
 
 	private static ConcurrentLinkedDeque<String> consoleCommandsAwaitingProcessing = new ConcurrentLinkedDeque<String>();
 
+	@SuppressWarnings("rawtypes")
 	public static void main(String[] args) throws InterruptedException {
 
 		if(args.length % 2 != 0) {
@@ -57,6 +60,7 @@ public static void main(String[] args) throws InterruptedException {
 		Instant nextWiimmfiPing = Instant.now();
 		Instant nextDiscordPing = Instant.now();
 		Instant updateCooldowns = Instant.now();
+		Instant nextBackupTime = Instant.now();
 		startConsole();
 
 		try {
@@ -65,6 +69,10 @@ public static void main(String[] args) throws InterruptedException {
 				while(!consoleCommandsAwaitingProcessing.isEmpty()) {
 					Commands.DISPATCHER.handleCommand(consoleCommandsAwaitingProcessing.pollFirst());
 				}
+				if(nextBackupTime.isBefore(Instant.now())) {
+					Backup.backup(new MessageContext());
+					nextBackupTime = nextBackupTime.plus(Duration.ofHours(1));
+				}
 				if(nextWiimmfiPing.isBefore(Instant.now())) {
 					wiimmfi.update();
 					if(error == null) {

src/main/java/com/gamebuster19901/excite/backup/Backup.java

@@ -0,0 +1,75 @@
+package com.gamebuster19901.excite.backup;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOError;
+import java.io.IOException;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.time.Instant;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
+
+import com.gamebuster19901.excite.bot.command.MessageContext;
+
+public class Backup {
+
+	public static final String DIR_TO_BACKUP = "./run/";
+	public static final String BACKUP_STORAGE = "./backups/";
+	static {
+		if(new File(DIR_TO_BACKUP).exists()) {
+			File BACKUP_DIR = new File(BACKUP_STORAGE);
+			if(!BACKUP_DIR.exists()) {
+				BACKUP_DIR.mkdirs();
+			}
+		}
+		else {
+			throw new AssertionError(new FileNotFoundException());
+		}
+	}
+
+	@SuppressWarnings("rawtypes")
+	public static int backup(MessageContext context) {
+		if(context.isOperator()) {
+			context.sendMessage("Backing up data...");
+			backup(DIR_TO_BACKUP);
+			context.sendMessage("Backup complete!");
+		}
+		else {
+			context.sendMessage("You do not have permission to execute this command");
+		}
+		return 0;
+	}
+
+	private static void backup(String dirPath) {
+		final Path sourceDir = Paths.get(dirPath);
+		String zipFileName = BACKUP_STORAGE + Instant.now().toString() + ".zip";
+		try {
+			final ZipOutputStream outputStream = new ZipOutputStream(new FileOutputStream(zipFileName));
+			Files.walkFileTree(sourceDir, new SimpleFileVisitor<Path>() {
+				@Override
+				public FileVisitResult visitFile(Path file, BasicFileAttributes attributes) {
+					try {
+						Path targetFile = sourceDir.relativize(file);
+						outputStream.putNextEntry(new ZipEntry(targetFile.toString()));
+						byte[] bytes = Files.readAllBytes(file);
+						outputStream.write(bytes, 0, bytes.length);
+						outputStream.closeEntry();
+					} catch (IOException e) {
+						throw new IOError(e);
+					}
+					return FileVisitResult.CONTINUE;
+				}
+			});
+			outputStream.close();
+		} catch (IOException e) {
+			throw new IOError(e);
+		}
+	}
+
+}

src/main/java/com/gamebuster19901/excite/bot/command/BackupCommand.java

@@ -0,0 +1,15 @@
+package com.gamebuster19901.excite.bot.command;
+
+import com.gamebuster19901.excite.backup.Backup;
+import com.mojang.brigadier.CommandDispatcher;
+
+public class BackupCommand {
+
+	@SuppressWarnings("rawtypes")
+	public static void register(CommandDispatcher<MessageContext> dispatcher) {
+		dispatcher.register(Commands.literal("!backup").executes((context) -> {
+			return Backup.backup(context.getSource());
+		}));
+	}
+
+}

src/main/java/com/gamebuster19901/excite/bot/command/Commands.java

@@ -26,6 +26,7 @@ public Commands() {
 		StopCommand.register(dispatcher);
 		AdminRoleCommand.register(dispatcher);
 		HelpCommand.register(dispatcher);
+		BackupCommand.register(dispatcher);
 	}
 
 	public void handleCommand(String command) {