feat: support builtin script for enhanced mode

src-tauri/src/enhance/chain.rs

@@ -0,0 +1,56 @@
+use crate::{
+    config::PrfItem,
+    utils::{dirs, help},
+};
+use serde_yaml::Mapping;
+use std::fs;
+
+#[derive(Debug, Clone)]
+pub struct ChainItem {
+    pub uid: String,
+    pub data: ChainType,
+}
+
+#[derive(Debug, Clone)]
+pub enum ChainType {
+    Merge(Mapping),
+    Script(String),
+}
+
+impl From<&PrfItem> for Option<ChainItem> {
+    fn from(item: &PrfItem) -> Self {
+        let itype = item.itype.as_ref()?.as_str();
+        let file = item.file.clone()?;
+        let uid = item.uid.clone().unwrap_or("".into());
+        let path = dirs::app_profiles_dir().ok()?.join(file);
+
+        if !path.exists() {
+            return None;
+        }
+
+        match itype {
+            "script" => Some(ChainItem {
+                uid,
+                data: ChainType::Script(fs::read_to_string(path).ok()?),
+            }),
+            "merge" => Some(ChainItem {
+                uid,
+                data: ChainType::Merge(help::read_merge_mapping(&path).ok()?),
+            }),
+            _ => None,
+        }
+    }
+}
+
+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()),
+        };
+
+        vec![hy_alpn]
+    }
+}