feat: switch to jackson for YAML config parsing

nicko-core/src/main/java/net/artelnatif/nicko/config/Configuration.java

@@ -7,4 +7,8 @@ public record Configuration(
         String prefix,
         Boolean local,
         Boolean bungeecord,
-        Boolean customLocale) { }
+        Boolean customLocale) {
+    public Configuration() {
+        this("", "", "", "", false, false, false);
+    }
+}

nicko-core/src/main/java/net/artelnatif/nicko/config/ConfigurationManager.java

@@ -1,7 +1,8 @@
 package net.artelnatif.nicko.config;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
 import net.artelnatif.nicko.Nicko;
-import org.yaml.snakeyaml.Yaml;
 
 import java.io.*;
 import java.nio.file.Files;
@@ -9,7 +10,7 @@ import java.nio.file.StandardCopyOption;
 
 public class ConfigurationManager {
     private final Nicko nicko;
-    private final Yaml yaml = new Yaml();
+    private final ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
     private final File directory;
     private final File file;
 
@@ -21,17 +22,20 @@ public class ConfigurationManager {
 
     public void save(Configuration configuration) throws IOException {
         try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) {
-            yaml.dump(configuration, writer);
+            mapper.writeValue(writer, configuration);
             writer.flush();
         }
     }
 
     public void saveDefaultConfig() {
         if (!file.exists()) {
+            System.out.println("FILE DOES NOT EXISTS");
             try {
-                final InputStream input = ConfigurationManager.class.getResourceAsStream("config.yml");
+                final InputStream input = getClass().getResourceAsStream("/config.yml");
                 if (input != null) {
                     nicko.getLogger().info("Saved default configuration as config.yml");
+                    Files.createDirectories(file.getParentFile().toPath());
+                    Files.createFile(file.toPath());
                     Files.copy(input, file.toPath(), StandardCopyOption.REPLACE_EXISTING);
                 }
             } catch (IOException e) {
@@ -42,7 +46,7 @@ public class ConfigurationManager {
 
     public Configuration load() throws IOException {
         try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
-            return yaml.loadAs(reader, Configuration.class);
+            return mapper.readValue(reader, Configuration.class);
         }
     }
 }

nicko-core/src/main/resources/config.yml

@@ -13,39 +13,36 @@
 # GENERAL #
 ###########
 
-common:
-  storage:
-    # SQL database's address
-    # Accepted values: valid IP address (e.g. localhost, 127.0.0.1)
-    address: "localhost"
-    # SQL database's username.
-    # Accepted values: any string
-    username: ""
-    # SQL database's password.
-    # Accepted values: any string
-    password: ""
+# SQL database's address
+# Accepted values: valid IP address (e.g. localhost, 127.0.0.1)
+address: "localhost"
+# SQL database's username.
+# Accepted values: any string
+username: ""
+# SQL database's password.
+# Accepted values: any string
+password: ""
 
 #################
 # BUKKIT/SPIGOT #
 #################
 
-bukkit:
-  # Nicko's messages prefix.
-  # Accepted values: any string
-  prefix: "§8[§6Nicko§8] "
+# Nicko's messages prefix.
+# Accepted values: any string
+prefix: "§8[§6Nicko§8] "
 
-  # Indicates wherever the data will be stored
-  # locally through a .json file or a (My)SQL database.
-  # Accepted values: false (Disabled), true (Enabled)
-  local: true
+# Indicates wherever the data will be stored
+# locally through a .json file or a (My)SQL database.
+# Accepted values: false (Disabled), true (Enabled)
+local: true
 
-  # Enables Bungeecord support, switching
-  # servers will transfer player's disguise.
-  # Accepted values: false (Disabled), true (Enabled)
-  bungeecord: false
+# Enables Bungeecord support, switching
+# servers will transfer player's disguise.
+# Accepted values: false (Disabled), true (Enabled)
+bungeecord: false
 
-  # Nicko will copy the English locale as "lang.yml"
-  # and will use the translations in that file when "Server Custom"
-  # is selected as the player's locale.
-  # Accepted values: false (Disabled), true (Enabled)
-  customLocale: false
+# Nicko will copy the English locale as "lang.yml"
+# and will use the translations in that file when "Server Custom"
+# is selected as the player's locale.
+# Accepted values: false (Disabled), true (Enabled)
+customLocale: false