Added the ability to move folder

Closes #48

backend/src/routes/fs/routes.rs

@@ -549,3 +549,43 @@ pub fn get_type(
         _type: mime_guess::from_path(std::path::Path::new(&node.name)).first_or_octet_stream().to_string()
     })
 }
+
+pub fn move_node(
+    span: &Span,
+    _: &mut Request,
+    db: &mut DBConnection,
+    info: UserInfo,
+    data: dto::requests::MoveNode
+) -> Result<ResponseBox, AppError> {
+    let guard_lock = DBConnection::get_lock(info.0.id);
+    let _guard = guard_lock.write(span);
+
+    let target =
+        super::get_node_and_validate(span, &info.0, data.target, db).ok_or(AppError::BadRequest("Invalid target"))?;
+    if target.is_file {
+        return AppError::BadRequest("Invalid target").err();
+    }
+
+    let mut nodes = data
+        .nodes
+        .iter()
+        .map(|v| super::get_node_and_validate(span, &info.0, *v, db))
+        .into_iter()
+        .collect::<Option<Vec<db::Inode>>>()
+        .ok_or(AppError::BadRequest("Invalid node"))?;
+
+    for parent in super::get_node_path(span, target.clone(), db) {
+        if nodes.contains(&parent) {
+            return AppError::BadRequest("Can't move node into one of it's subfolders").err();
+        }
+    }
+    for child in db.get_children(span, target.id) {
+        if nodes.iter().any(|n| n.name == child.name) {
+            return AppError::BadRequest("Can't overwrite existing file").err();
+        }
+    }
+
+    nodes.iter_mut().for_each(|n| db.move_node(span, n, target.id));
+
+    get_reply(&dto::responses::Success { statusCode: 200 })
+}