fix: reorder bugs

shared-lib/lib-infra/src/lib.rs

@@ -1,8 +1,4 @@
 pub mod code_gen;
 pub mod future;
 pub mod retry;
-
-#[allow(dead_code)]
-pub fn timestamp() -> i64 {
-    chrono::Utc::now().timestamp()
-}
+pub mod util;

shared-lib/lib-infra/src/util.rs

@@ -0,0 +1,32 @@
+pub fn move_vec_element<T, F>(
+    vec: &mut Vec<T>,
+    filter: F,
+    _from_index: usize,
+    mut to_index: usize,
+) -> Result<bool, String>
+where
+    F: FnMut(&T) -> bool,
+{
+    match vec.iter().position(filter) {
+        None => Ok(false),
+        Some(index) => {
+            if vec.len() > to_index {
+                let removed_element = vec.remove(index);
+                vec.insert(to_index, removed_element);
+                Ok(true)
+            } else {
+                let msg = format!(
+                    "Move element to invalid index: {}, current len: {}",
+                    to_index,
+                    vec.len()
+                );
+                Err(msg)
+            }
+        }
+    }
+}
+
+#[allow(dead_code)]
+pub fn timestamp() -> i64 {
+    chrono::Utc::now().timestamp()
+}