Set up the flake repo directory.

src/fs_util.rs

@@ -0,0 +1,36 @@
+macro_rules! assert_directory {
+    ($dir:expr, $($params:tt)*) => {{
+        let dir = $dir;
+        let metadata = tokio::fs::metadata(&dir).await;
+        match metadata {
+            Ok(metadata) if !metadata.is_dir() => {
+                tracing::info!($($params)*);
+                tokio::fs::create_dir_all(dir).await?;
+            }
+            Err(_) => {
+                tracing::info!($($params)*);
+                tokio::fs::create_dir_all(dir).await?;
+            }
+            Ok(_) => {}
+        };
+    }};
+}
+use std::path::Path;
+
+pub(crate) use assert_directory;
+
+use crate::error::CustomError;
+
+pub(crate) async fn is_directory<D: AsRef<Path>>(dir: D) -> Result<bool, CustomError> {
+    let metadata = tokio::fs::metadata(dir).await;
+    let result = match metadata {
+        Ok(metadata) if metadata.is_dir() => true,
+        _ => false,
+    };
+    Ok(result)
+}
+
+pub(crate) async fn is_git_repo<D: AsRef<Path>>(dir: D) -> Result<bool, CustomError> {
+    let dot_git = dir.as_ref().join(".git");
+    is_directory(dot_git).await
+}