feat(config): add migration for old config dir (#419)

backend/tauri/src/utils/dialog.rs

@@ -1,3 +1,4 @@
+use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Barrier};
 use tauri::api::dialog::{MessageDialogBuilder, MessageDialogButtons, MessageDialogKind};
 
@@ -16,3 +17,20 @@ pub fn panic_dialog(msg: &str) {
         });
     barrier.wait();
 }
+
+pub fn migrate_dialog() -> bool {
+    let msg = "Old version config file detected\nMigrate to new version or not?\n WARNING: This will override your current config if exists".to_string();
+    let barrier = Arc::new(Barrier::new(2));
+    let barrier_ref = barrier.clone();
+    let migrate = Arc::new(AtomicBool::new(false));
+    let migrate_ref = migrate.clone();
+    MessageDialogBuilder::new("Migration", msg)
+        .kind(MessageDialogKind::Warning)
+        .buttons(MessageDialogButtons::YesNo)
+        .show(move |_migrate| {
+            migrate_ref.store(_migrate, Ordering::Relaxed);
+            barrier_ref.wait();
+        });
+    barrier.wait();
+    migrate.load(Ordering::Relaxed)
+}

backend/tauri/src/utils/dirs.rs

@@ -7,9 +7,13 @@ use tauri::{
 };
 
 #[cfg(not(feature = "verge-dev"))]
-static APP_DIR: &str = "clash-verge";
+static OLD_APP_DIR: &str = "clash-verge";
 #[cfg(feature = "verge-dev")]
-static APP_DIR: &str = "clash-verge-dev";
+static OLD_APP_DIR: &str = "clash-verge-dev";
+#[cfg(not(feature = "verge-dev"))]
+static APP_DIR: &str = "clash-nyanpasu";
+#[cfg(feature = "verge-dev")]
+static APP_DIR: &str = "clash-nyanpasu-dev";
 
 static CLASH_CONFIG: &str = "config.yaml";
 static VERGE_CONFIG: &str = "verge.yaml";
@@ -51,6 +55,33 @@ pub fn init_portable_flag() -> Result<()> {
     Ok(())
 }
 
+pub fn old_app_home_dir() -> Result<PathBuf> {
+    #[cfg(target_os = "windows")]
+    {
+        use tauri::utils::platform::current_exe;
+
+        if !PORTABLE_FLAG.get().unwrap_or(&false) {
+            Ok(home_dir()
+                .ok_or(anyhow::anyhow!("failed to check old app home dir"))?
+                .join(".config")
+                .join(OLD_APP_DIR))
+        } else {
+            let app_exe = current_exe()?;
+            let app_exe = dunce::canonicalize(app_exe)?;
+            let app_dir = app_exe
+                .parent()
+                .ok_or(anyhow::anyhow!("failed to check the old portable app dir"))?;
+            Ok(PathBuf::from(app_dir).join(".config").join(OLD_APP_DIR))
+        }
+    }
+
+    #[cfg(not(target_os = "windows"))]
+    Ok(home_dir()
+        .ok_or(anyhow::anyhow!("failed to get the app home dir"))?
+        .join(".config")
+        .join(OLD_APP_DIR))
+}
+
 /// get the verge app home dir
 pub fn app_home_dir() -> Result<PathBuf> {
     #[cfg(target_os = "windows")]
@@ -91,6 +122,7 @@ pub fn app_resources_dir() -> Result<PathBuf> {
     };
     Err(anyhow::anyhow!("failed to get the resource dir"))
 }
+
 /// profiles dir
 pub fn app_profiles_dir() -> Result<PathBuf> {
     Ok(app_home_dir()?.join("profiles"))

backend/tauri/src/utils/init.rs

@@ -1,3 +1,4 @@
+use crate::utils::dialog::migrate_dialog;
 use crate::{
     config::*,
     utils::{dirs, help},
@@ -11,6 +12,7 @@ use log4rs::{
     encode::pattern::PatternEncoder,
 };
 use std::fs;
+use std::path::PathBuf;
 
 /// initialize this instance's log file
 fn init_log() -> Result<()> {
@@ -77,9 +79,23 @@ pub fn init_config() -> Result<()> {
     #[cfg(target_os = "windows")]
     let _ = dirs::init_portable_flag();
 
+    // Check if old config dir exist
+    let mut old_app_dir: Option<PathBuf> = None;
+    crate::log_err!(dirs::old_app_home_dir().map(|_old_app_dir| {
+        if _old_app_dir.exists() && migrate_dialog() {
+            old_app_dir = Some(_old_app_dir);
+        }
+    }));
+
     let _ = init_log();
 
     crate::log_err!(dirs::app_home_dir().map(|app_dir| {
+        // Do migrate
+        if let Some(_old_app_dir) = old_app_dir {
+            let _ = fs::remove_dir_all(&app_dir);
+            let _ = fs::rename(_old_app_dir, &app_dir);
+        }
+
         if !app_dir.exists() {
             let _ = fs::create_dir_all(&app_dir);
         }