Added customizable config messages & feature toggles

src/main/java/wtf/hak/survivalfabric/config/ConfigManager.java

@@ -0,0 +1,43 @@
+package wtf.hak.survivalfabric.config;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import net.fabricmc.loader.api.FabricLoader;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+
+public class ConfigManager {
+
+    private static final File CONFIG_FILE = FabricLoader.getInstance().getConfigDir().resolve("survivalfabric.json").toFile();
+    private static final Gson GSON = new GsonBuilder().setPrettyPrinting().create();
+
+    private static Config INSTANCE;
+
+    public static Config getConfig() {
+        if (INSTANCE == null) {
+            return load();
+        }else
+            return INSTANCE;
+    }
+
+    public static Config load() {
+        try(FileReader reader = new FileReader(CONFIG_FILE)) {
+            return GSON.fromJson(reader, Config.class);
+        } catch (IOException e) {
+            Config config = new Config();
+            save(config);
+            return config;
+        }
+    }
+
+    public static void save(Config config) {
+        try(FileWriter writer = new FileWriter(CONFIG_FILE)) {
+            GSON.toJson(config, writer);
+        } catch (IOException e) {
+            System.out.println("Error saving config: " + e.getMessage());
+        }
+    }
+}