refactor: extract default directory names to a constant array

Author: reddevilmidzy

src/file_manager/git.rs

@@ -6,6 +6,7 @@ use std::path::PathBuf;
 use tokio::fs;
 
 const UPLOAD_DIR: &str = "uploads";
+const DEFAULT_DIRECTORIES: [&str; 3] = ["solutions", "tests", "statements"];
 
 #[derive(Debug)]
 struct GitManager {
@@ -121,8 +122,7 @@ impl GitManager {
 
     async fn create_default_directories(&self) -> Result<()> {
         let base_path = PathBuf::from(UPLOAD_DIR).join(self.problem_id.to_string());
-        let directories = ["solutions", "tests", "statements"];
-        for dir in directories {
+        for dir in DEFAULT_DIRECTORIES {
             let path = base_path.join(dir);
             fs::create_dir_all(path)
                 .await