Calculate repo count on start and increment when a new repo is cloned

src/count.rs

@@ -0,0 +1,24 @@
+use crate::error::Result;
+use std::{fs::read_dir, path::Path, result::Result as StdResult};
+
+pub(crate) fn count_repositories<P>(repo_path: P) -> Result<usize>
+where
+    P: AsRef<Path>,
+{
+    Ok(read_dir(repo_path)?
+        .filter_map(StdResult::ok)
+        .filter(|entry| entry.file_type().map(|ft| ft.is_dir()).unwrap_or(false))
+        .map(|entry| read_dir(entry.path()))
+        .filter_map(StdResult::ok)
+        .flat_map(|dir| {
+            dir.filter_map(StdResult::ok)
+                .filter(|entry| entry.file_type().map(|ft| ft.is_dir()).unwrap_or(false))
+        })
+        .map(|entry| read_dir(entry.path()))
+        .filter_map(StdResult::ok)
+        .flat_map(|dir| {
+            dir.filter_map(StdResult::ok)
+                .filter(|entry| entry.file_type().map(|ft| ft.is_dir()).unwrap_or(false))
+        })
+        .count())
+}