Move Plex to API-driven plugin and fix NoClassDefFoundError on startup

server/src/main/java/dev/plex/config/ModuleConfig.java

@@ -0,0 +1,95 @@
+package dev.plex.config;
+
+import dev.plex.module.PlexModule;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import org.bukkit.configuration.InvalidConfigurationException;
+import org.bukkit.configuration.file.YamlConfiguration;
+
+/**
+ * Creates a custom Config object
+ */
+public class ModuleConfig extends YamlConfiguration
+{
+    /**
+     * The plugin instance
+     */
+    private PlexModule module;
+
+    /**
+     * The File instance
+     */
+    private File file;
+
+    /**
+     * Where the file is in the module JAR
+     */
+    private String from;
+
+    /**
+     * Where it should be copied to in the module folder
+     */
+    private String to;
+
+    /**
+     * Creates a config object
+     *
+     * @param module The module instance
+     * @param to     The file name
+     */
+    public ModuleConfig(PlexModule module, String from, String to)
+    {
+        this.module = module;
+        this.file = new File(module.getDataFolder(), to);
+        this.to = to;
+        this.from = from;
+
+        if (!file.exists())
+        {
+            saveDefault();
+        }
+    }
+
+    public void load()
+    {
+        try
+        {
+            super.load(file);
+        }
+        catch (IOException | InvalidConfigurationException ex)
+        {
+            ex.printStackTrace();
+        }
+    }
+
+    /**
+     * Saves the configuration file
+     */
+    public void save()
+    {
+        try
+        {
+            super.save(file);
+        }
+        catch (Exception ex)
+        {
+            ex.printStackTrace();
+        }
+    }
+
+    /**
+     * Moves the configuration file from the plugin's resources folder to the data folder (plugins/Plex/)
+     */
+    private void saveDefault()
+    {
+        try
+        {
+            Files.copy(module.getClass().getResourceAsStream("/" + from), this.file.toPath());
+        }
+        catch (IOException e)
+        {
+            e.printStackTrace();
+        }
+    }
+}