bungee config loader

bungee/src/main/java/app/shopmc/plugin/bungee/BungeeResourceLoader.java

@@ -0,0 +1,27 @@
+package app.shopmc.plugin.bungee;
+
+import app.shopmc.plugin.resource.ResourceLoader;
+import app.shopmc.plugin.resource.ResourceLoaderException;
+import net.md_5.bungee.config.Configuration;
+import net.md_5.bungee.config.ConfigurationProvider;
+import net.md_5.bungee.config.YamlConfiguration;
+
+import java.io.File;
+import java.nio.file.Path;
+
+public class BungeeResourceLoader extends ResourceLoader<Configuration> {
+
+    public BungeeResourceLoader(final Class<?> loadingClass, final File dataFolder) {
+        super(loadingClass, dataFolder.toPath());
+    }
+
+    @Override
+    protected Configuration loadResource(final Path resourcePath) throws ResourceLoaderException {
+        try {
+            return ConfigurationProvider.getProvider(YamlConfiguration.class).load(resourcePath.toFile());
+        } catch (final Exception exception) {
+            throw new ResourceLoaderException(ResourceLoaderException.Reason.FILE_NOT_LOADED, exception);
+        }
+    }
+
+}

bungee/src/main/java/app/shopmc/plugin/bungee/BungeeShopMCPlugin.java

@@ -2,10 +2,13 @@
 
 import app.shopmc.plugin.config.Config;
 import app.shopmc.plugin.config.EmptyConfigFieldException;
+import app.shopmc.plugin.resource.ResourceLoader;
+import app.shopmc.plugin.resource.ResourceLoaderException;
 import app.shopmc.plugin.router.Socket;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.plugin.Plugin;
 import net.md_5.bungee.api.scheduler.ScheduledTask;
+import net.md_5.bungee.config.Configuration;
 import net.md_5.bungee.config.YamlConfiguration;
 import org.java_websocket.handshake.ServerHandshake;
 
@@ -16,7 +19,6 @@
 
 import static net.md_5.bungee.config.ConfigurationProvider.getProvider;
 
-@SuppressWarnings("ResultOfMethodCallIgnored")
 public class BungeeShopMCPlugin extends Plugin {
     private Socket socket;
     public static Config config;
@@ -26,24 +28,21 @@ public class BungeeShopMCPlugin extends Plugin {
     @Override
     public void onEnable() {
         // init config file
-        File dataFolder = getDataFolder();
-        dataFolder.mkdirs();
-        File configFile = new File(dataFolder, "config.yml");
-        if (!configFile.exists()) {
-            try {
-                configFile.createNewFile();
-            } catch (IOException e) {
-                getLogger().log(Level.SEVERE, "Error creating config file", e);
+        final ResourceLoader<Configuration> resourceLoader = new BungeeResourceLoader(this.getClass(), this.getDataFolder());
+        try {
+            if (resourceLoader.saveDefault("config.yml")) {
+                this.getLogger().info("Default file config.yml has been saved, configure it and restart proxy");
+                return;
             }
-        }
 
-        // check if config is correct
-        try {
-            config = new Config(new BungeeConfigLoader(getProvider(YamlConfiguration.class).load(configFile)));
-        } catch (EmptyConfigFieldException | IOException exception) {
-            getLogger().log(Level.SEVERE, exception.getMessage());
-            proxyServer.getPluginManager().unregisterCommands(this);
-            return;
+            try {
+                final Configuration cfgFile = resourceLoader.load("config.yml");
+                config = new Config(new BungeeConfigLoader(cfgFile));
+            } catch (final EmptyConfigFieldException exception) {
+                this.getLogger().severe(exception.getMessage());
+            }
+        } catch (final ResourceLoaderException exception) {
+            this.getLogger().severe("Reason: " + exception.getCause().getMessage());
         }
 
         socket = new Socket(config.key) {

common/src/main/java/app/shopmc/plugin/resource/ResourceLoader.java

@@ -0,0 +1,46 @@
+package app.shopmc.plugin.resource;
+
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Objects;
+
+public abstract class ResourceLoader<T> {
+
+    private final Class<?> loadingClass;
+    private final Path dataDirectory;
+
+    protected ResourceLoader(final Class<?> loadingClass, final Path dataDirectory) {
+        this.loadingClass = loadingClass;
+        this.dataDirectory = dataDirectory;
+    }
+
+    protected abstract T loadResource(final Path resourcePath) throws ResourceLoaderException;
+
+    public boolean saveDefault(final String resourceName) throws ResourceLoaderException {
+        if (!Files.exists(this.dataDirectory)) {
+            try {
+                Files.createDirectories(this.dataDirectory);
+            } catch (final Exception exception) {
+                throw new ResourceLoaderException(ResourceLoaderException.Reason.DIRECTORY_NOT_CREATED, exception);
+            }
+        }
+
+        final Path resourcePath = this.dataDirectory.resolve(resourceName);
+        if (!Files.exists(resourcePath)) {
+            try (final InputStream in = this.loadingClass.getClassLoader().getResourceAsStream(resourceName)) {
+                Files.copy(Objects.requireNonNull(in), resourcePath);
+                return true;
+            } catch (final Exception exception) {
+                throw new ResourceLoaderException(ResourceLoaderException.Reason.DEFAULT_FILE_NOT_SAVED, exception);
+            }
+        }
+
+        return false;
+    }
+
+    public T load(final String resourceName) throws ResourceLoaderException {
+        return this.loadResource(this.dataDirectory.resolve(resourceName));
+    }
+
+}

common/src/main/java/app/shopmc/plugin/resource/ResourceLoaderException.java

@@ -0,0 +1,32 @@
+package app.shopmc.plugin.resource;
+
+public class ResourceLoaderException extends Exception {
+
+    private final Reason reason;
+
+    public ResourceLoaderException(final Reason reason, final Throwable cause) {
+        super(cause);
+        this.reason = reason;
+    }
+
+    public Reason getReason() {
+        return this.reason;
+    }
+
+    public enum Reason {
+        DIRECTORY_NOT_CREATED("Nie udało się utworzyć folderu pluginu"),
+        DEFAULT_FILE_NOT_SAVED("Nie udało się zapisać domyślnego pliku %s"),
+        FILE_NOT_LOADED("Nie udało się otworzyć pliku %s");
+
+        private final String message;
+
+        Reason(final String message) {
+            this.message = message;
+        }
+
+        public String getMessage(final String fileName) {
+            return String.format(this.message, fileName);
+        }
+    }
+
+}