ban/unban process

src/main/java/ru/dmitriymx/plugin/BanHammerPlugin.java

@@ -19,6 +19,8 @@ public class BanHammerPlugin extends JavaPlugin {
 
 		ApplicationContext context = createSpringContext();
 
+		this.getServer().getPluginManager().registerEvents(context.getBean(PlayerListener.class), this);
+
 		this.getCommand("ban").setExecutor(context.getBean(BanCommand.class));
 		this.getCommand("unban").setExecutor(context.getBean(UnbanCommand.class));
 	}

src/main/java/ru/dmitriymx/plugin/PlayerListener.java

@@ -0,0 +1,27 @@
+package ru.dmitriymx.plugin;
+
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerLoginEvent;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import ru.dmitriymx.plugin.service.BannedUserService;
+
+@Component
+public class PlayerListener implements Listener {
+
+	private final BannedUserService service;
+
+	@Autowired
+	public PlayerListener(BannedUserService service) {
+		this.service = service;
+	}
+
+	@EventHandler
+	@SuppressWarnings("unused")
+	public void onLogin(PlayerLoginEvent event) {
+		if (service.isBanned(event.getPlayer())) {
+			event.disallow(PlayerLoginEvent.Result.KICK_BANNED, "You banned!");
+		}
+	}
+}

src/main/java/ru/dmitriymx/plugin/command/BanCommand.java

@@ -4,35 +4,32 @@ import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.stereotype.Component;
 import ru.dmitriymx.plugin.service.BannedUserService;
 
-import java.util.logging.Logger;
-
 @Component
 public class BanCommand implements CommandExecutor {
 
-	private final Logger logger;
 	private final BannedUserService service;
 
 	@Autowired
-	@SuppressWarnings("SpringJavaInjectionPointsAutowiringInspection")
-	public BanCommand(@Qualifier("bukkitLogger") Logger logger, BannedUserService service) {
-		this.logger = logger;
+	public BanCommand(BannedUserService service) {
 		this.service = service;
 	}
 
 	@Override
 	public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-		logger.info("Call '" + label + "' command");
-
 		if (args.length == 0) {
-			return true;
+			return false;
 		}
+		String playerName = args[0];
 
-		boolean result = service.inBanned(args[0]);
-		logger.info("Player '" + args[0] + "': " + (result ? "is banned" : "not banned"));
+		if (service.isBanned(playerName)) {
+			sender.sendMessage("Player '" + playerName + "' already banned");
+		} else {
+			service.ban(playerName);
+			sender.sendMessage("Player '" + playerName + "' now banned");
+		}
 
 		return true;
 	}

src/main/java/ru/dmitriymx/plugin/command/UnbanCommand.java

@@ -4,25 +4,33 @@ import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.stereotype.Component;
-
-import java.util.logging.Logger;
+import ru.dmitriymx.plugin.service.BannedUserService;
 
 @Component
 public class UnbanCommand implements CommandExecutor {
 
-	private final Logger logger;
+	private final BannedUserService service;
 
 	@Autowired
-	@SuppressWarnings("SpringJavaInjectionPointsAutowiringInspection")
-	public UnbanCommand(@Qualifier("bukkitLogger") Logger logger) {
-		this.logger = logger;
+	public UnbanCommand(BannedUserService service) {
+		this.service = service;
 	}
 
 	@Override
 	public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-		logger.info("Call '" + label + "' command");
+		if (args.length == 0) {
+			return false;
+		}
+		String playerName = args[0];
+
+		if (service.isBanned(playerName)) {
+			service.unban(playerName);
+			sender.sendMessage("Player '" + playerName + "' now not banned");
+		} else {
+			sender.sendMessage("Player '" + playerName + "' not banned");
+		}
+
 		return true;
 	}
 }

src/main/java/ru/dmitriymx/plugin/config/SpringConfig.java

@@ -7,14 +7,18 @@ import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 import org.springframework.jdbc.datasource.DriverManagerDataSource;
+import org.springframework.orm.jpa.JpaTransactionManager;
 import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
 
+import javax.persistence.EntityManagerFactory;
 import javax.sql.DataSource;
 import java.util.Properties;
 
 @Configuration
 @ComponentScan(basePackages = "ru.dmitriymx.plugin")
 @EnableJpaRepositories(basePackages = "ru.dmitriymx.plugin.repository")
+@EnableTransactionManagement
 public class SpringConfig {
 
 	@Value("${database.url}")
@@ -50,6 +54,14 @@ public class SpringConfig {
 		return entityManagerFactoryBean;
 	}
 
+	@Bean
+	public JpaTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
+		JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
+		jpaTransactionManager.setEntityManagerFactory(entityManagerFactory);
+
+		return jpaTransactionManager;
+	}
+
 	private Properties hibernateJpaProperties() {
 		Properties properties = new Properties();
 		properties.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQL5Dialect");

src/main/java/ru/dmitriymx/plugin/entity/BannedUserEntity.java

@@ -1,16 +1,15 @@
 package ru.dmitriymx.plugin.entity;
 
-import javax.persistence.Column;
-import javax.persistence.Entity;
-import javax.persistence.Id;
-import javax.persistence.Table;
+import javax.persistence.*;
 import java.util.Objects;
 
 @Entity
 @Table(name = "ban_users")
+@SuppressWarnings("unused")
 public class BannedUserEntity {
 
 	@Id
+	@GeneratedValue(strategy=GenerationType.IDENTITY)
 	private Integer id;
 
 	@Column(

src/main/java/ru/dmitriymx/plugin/repository/BannedUserRepository.java

@@ -1,13 +1,20 @@
 package ru.dmitriymx.plugin.repository;
 
-import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 import ru.dmitriymx.plugin.entity.BannedUserEntity;
 
 import java.util.Optional;
 
 @Repository
-public interface BannedUserRepository extends CrudRepository<BannedUserEntity, Integer> {
+public interface BannedUserRepository extends JpaRepository<BannedUserEntity, Integer> {
 
 	Optional<BannedUserEntity> findByPlayerName(String playerName);
+
+	@Modifying
+	@Query("delete from #{#entityName} b where b.playerName = :playerName")
+	void deleteByPlayerName(@Param("playerName") String playerName);
 }

src/main/java/ru/dmitriymx/plugin/service/BannedUserService.java

@@ -3,9 +3,12 @@ package ru.dmitriymx.plugin.service;
 import org.bukkit.entity.Player;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import ru.dmitriymx.plugin.entity.BannedUserEntity;
 import ru.dmitriymx.plugin.repository.BannedUserRepository;
 
 @Service
+@Transactional
 public class BannedUserService {
 
 	private final BannedUserRepository repository;
@@ -15,11 +18,21 @@ public class BannedUserService {
 		this.repository = repository;
 	}
 
-	public boolean inBanned(Player player) {
-		return inBanned(player.getName());
+	public boolean isBanned(Player player) {
+		return isBanned(player.getName());
 	}
 
-	public boolean inBanned(String playerName) {
+	public boolean isBanned(String playerName) {
 		return repository.findByPlayerName(playerName.toLowerCase()).isPresent();
 	}
+
+	public void ban(String playerName) {
+		BannedUserEntity entity = new BannedUserEntity();
+		entity.setPlayerName(playerName);
+		repository.save(entity);
+	}
+
+	public void unban(String playerName) {
+		repository.deleteByPlayerName(playerName);
+	}
 }

src/main/resources/plugin.yml

@@ -6,7 +6,7 @@ author: @BUKKIT_PLUGIN_AUTHOR@
 commands:
   ban:
     description: Ban player
-    usage: /<command>
+    usage: /<command> PLAYER_NAME
   unban:
     description: Unban player
-    usage: /<command>
+    usage: /<command> PLAYER_NAME