feat: adjust builtin script and support meta guard script

src-tauri/src/enhance/chain.rs

@@ -17,6 +17,13 @@ pub enum ChainType {
     Script(String),
 }
 
+#[derive(Debug, Clone)]
+pub enum ChainSupport {
+    Clash,
+    ClashMeta,
+    All,
+}
+
 impl From<&PrfItem> for Option<ChainItem> {
     fn from(item: &PrfItem) -> Self {
         let itype = item.itype.as_ref()?.as_str();
@@ -44,13 +51,39 @@ impl From<&PrfItem> for Option<ChainItem> {
 
 impl ChainItem {
     /// 内建支持一些脚本
-    pub fn builtin() -> Vec<ChainItem> {
-        // meta 1.13.2 alpn string 转 数组
-        let hy_alpn = ChainItem {
-            uid: "verge_hy_alpn".into(),
-            data: ChainType::Script(include_str!("./builtin/hy_alpn.js").into()),
-        };
+    pub fn builtin() -> Vec<(ChainSupport, ChainItem)> {
+        // meta 的一些处理
+        let meta_guard =
+            ChainItem::to_script("verge_meta_guard", include_str!("./builtin/meta_guard.js"));
 
-        vec![hy_alpn]
+        // meta 1.13.2 alpn string 转 数组
+        let hy_alpn =
+            ChainItem::to_script("verge_hy_alpn", include_str!("./builtin/meta_hy_alpn.js"));
+
+        vec![
+            (ChainSupport::ClashMeta, hy_alpn),
+            (ChainSupport::ClashMeta, meta_guard),
+        ]
+    }
+
+    pub fn to_script<U: Into<String>, D: Into<String>>(uid: U, data: D) -> Self {
+        Self {
+            uid: uid.into(),
+            data: ChainType::Script(data.into()),
+        }
+    }
+}
+
+impl ChainSupport {
+    pub fn is_support(&self, core: Option<&String>) -> bool {
+        match core {
+            Some(core) => match (self, core.as_str()) {
+                (ChainSupport::All, _) => true,
+                (ChainSupport::Clash, "clash") => true,
+                (ChainSupport::ClashMeta, "clash-meta") => true,
+                _ => false,
+            },
+            None => true,
+        }
     }
 }