refactor: replace hardcoded DNS config filename with constant reference (#5280)

* refactor: replace hardcoded DNS config filename with constant reference

* refactor: remove redundant import of constants in IClashTemp template method

* refactor: add conditional compilation for DEFAULT_REDIR based on OS

* refactor: simplify default TPROXY port handling and remove unused trace_err macro

* refactor: simplify default TPROXY port fallback logic

src-tauri/src/utils/dirs.rs

@@ -24,7 +24,6 @@ pub static PORTABLE_FLAG: OnceCell<bool> = OnceCell::new();
 pub static CLASH_CONFIG: &str = "config.yaml";
 pub static VERGE_CONFIG: &str = "verge.yaml";
 pub static PROFILE_YAML: &str = "profiles.yaml";
-pub static DNS_CONFIG: &str = "dns_config.yaml";
 
 /// init portable flag
 pub fn init_portable_flag() -> Result<()> {

src-tauri/src/utils/init.rs

@@ -3,6 +3,7 @@
 use crate::utils::logging::NoModuleFilter;
 use crate::{
     config::*,
+    constants,
     core::handle,
     logging,
     process::AsyncHandler,
@@ -304,7 +305,7 @@ async fn init_dns_config() -> Result<()> {
 
     // 检查DNS配置文件是否存在
     let app_dir = dirs::app_home_dir()?;
-    let dns_path = app_dir.join("dns_config.yaml");
+    let dns_path = app_dir.join(constants::files::DNS_CONFIG);
 
     if !dns_path.exists() {
         logging!(info, Type::Setup, "Creating default DNS config file");

src-tauri/src/utils/logging.rs

@@ -80,15 +80,6 @@ macro_rules! log_err {
     };
 }
 
-#[macro_export]
-macro_rules! trace_err {
-    ($result: expr, $err_str: expr) => {
-        if let Err(err) = $result {
-            log::trace!(target: "app", "{}, err {}", $err_str, err);
-        }
-    }
-}
-
 /// wrap the anyhow error
 /// transform the error to String
 #[macro_export]