First working version

src/main/java/ru/bitheaven/donpayinteg/config/ConfigHandler.java

@@ -0,0 +1,58 @@
+package ru.bitheaven.donpayinteg.config;
+
+import net.fabricmc.loader.api.FabricLoader;
+import org.yaml.snakeyaml.DumperOptions;
+import org.yaml.snakeyaml.LoaderOptions;
+import org.yaml.snakeyaml.Yaml;
+
+import org.yaml.snakeyaml.constructor.Constructor;
+import org.yaml.snakeyaml.inspector.TagInspector;
+import ru.bitheaven.donpayinteg.DonPayInteg;
+
+import java.io.*;
+
+import static ru.bitheaven.donpayinteg.DonPayInteg.LOGGER;
+
+
+public class ConfigHandler {
+
+    private static final String PATH = FabricLoader.getInstance().getConfigDir().resolve(DonPayInteg.MOD_ID + ".yaml").toString();
+
+    public static void register() {
+        if(!new File(PATH).exists())
+            std();
+    }
+
+    public static Config load() {
+        LoaderOptions loaderOptions = new LoaderOptions();
+        loaderOptions.setTagInspector(tag -> tag.getClassName().equals(Config.class.getName()));
+        Yaml yaml = new Yaml(new Constructor(Config.class, loaderOptions));
+        Config config;
+        try {
+            config = yaml.load(new FileInputStream(PATH));
+        } catch (FileNotFoundException e) {
+            throw new RuntimeException(e);
+        }
+
+        return config;
+    }
+
+    public static void save(Config config) {
+        DumperOptions options = new DumperOptions();
+        options.setIndent(2);
+        options.setPrettyFlow(true);
+        options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
+        Yaml yaml = new Yaml(options);
+
+        try {
+            yaml.dump(config, new FileWriter(PATH));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static void std() {
+        save(new Config());
+        LOGGER.info("Created new config file");
+    }
+}