feat: 支持 webui 加载用户的订阅与收藏，一键点击订阅 (#357)

crates/bili_sync/src/utils/validation.rs

@@ -1,3 +1,5 @@
+use std::path::Path;
+
 use validator::ValidationError;
 
 use crate::utils::status::{STATUS_NOT_STARTED, STATUS_OK};
@@ -11,3 +13,11 @@ pub fn validate_status_value(value: u32) -> Result<(), ValidationError> {
         ))
     }
 }
+
+pub fn validate_path(path: &str) -> Result<(), ValidationError> {
+    if path.is_empty() || !Path::new(path).is_absolute() {
+        Err(ValidationError::new("path must be a non-empty absolute path"))
+    } else {
+        Ok(())
+    }
+}