refactor(windows_utils): 移除 WebView2 检测功能，简化启动错误处理 (close #37)

Author: Licoy

src-tauri/Cargo.toml

@@ -78,7 +78,6 @@ objc2 = { version = "0.6", features = ["relax-sign-encoding"] }
 [target.'cfg(target_os = "windows")'.dependencies]
 windows-sys = { version = "0.59", features = [
     "Win32_UI_WindowsAndMessaging",
-    "Win32_System_Registry",
     "Win32_Foundation",
 ] }
 

src-tauri/src/lib.rs

@@ -48,27 +48,6 @@ pub fn run() {
         )
         .init();
 
-    // On Windows, verify that WebView2 Runtime is installed before proceeding.
-    // Without WebView2 the app window would start hidden and never become visible
-    // because the frontend JS (which calls `show()`) cannot load.
-    #[cfg(target_os = "windows")]
-    {
-        if !windows_utils::is_webview2_installed() {
-            tracing::error!("WebView2 Runtime not found — cannot start AQBot");
-            let user_ok = windows_utils::show_warning_ok_cancel(
-                "AQBot",
-                "未检测到 Microsoft Edge WebView2 Runtime，AQBot 无法启动。\n\n\
-                 点击「确定」打开下载页面进行安装，安装完成后重新启动 AQBot。",
-            );
-            if user_ok {
-                let _ = std::process::Command::new("cmd")
-                    .args(["/c", "start", "https://developer.microsoft.com/en-us/microsoft-edge/webview2/?form=MA13LH#download"])
-                    .spawn();
-            }
-            std::process::exit(1);
-        }
-    }
-
     #[allow(unused_mut)]
     let mut builder = tauri::Builder::default()
         .plugin(tauri_plugin_opener::init())
@@ -88,7 +67,7 @@ pub fn run() {
         builder = builder.plugin(tauri_plugin_mcp_bridge::init());
     }
 
-    builder
+    let build_result = builder
         .invoke_handler(tauri::generate_handler![
             // providers
             commands::providers::list_providers,
@@ -655,9 +634,41 @@ pub fn run() {
                 }
             }
         })
-        .build(tauri::generate_context!())
-        .expect("error while building tauri application")
-        .run(|app, event| {
+        .build(tauri::generate_context!());
+
+    let app = match build_result {
+        Ok(app) => app,
+        Err(e) => {
+            let error_msg = e.to_string();
+            tracing::error!("Failed to build Tauri application: {}", error_msg);
+
+            #[cfg(target_os = "windows")]
+            {
+                let lower = error_msg.to_lowercase();
+                if lower.contains("webview2") || lower.contains("webview") || lower.contains("edge") {
+                    let user_ok = windows_utils::show_warning_ok_cancel(
+                        "AQBot",
+                        "未检测到 Microsoft Edge WebView2 Runtime，AQBot 无法启动。\n\n\
+                         点击「确定」打开下载页面进行安装，安装完成后重新启动 AQBot。",
+                    );
+                    if user_ok {
+                        let _ = std::process::Command::new("cmd")
+                            .args(["/c", "start", "https://developer.microsoft.com/en-us/microsoft-edge/webview2/?form=MA13LH#download"])
+                            .spawn();
+                    }
+                } else {
+                    windows_utils::show_error_dialog(
+                        "AQBot",
+                        &format!("应用启动失败：{}", error_msg),
+                    );
+                }
+            }
+
+            std::process::exit(1);
+        }
+    };
+
+    app.run(|app, event| {
             #[cfg(target_os = "macos")]
             if let tauri::RunEvent::Reopen { has_visible_windows, .. } = event {
                 if !has_visible_windows {

src-tauri/src/windows_utils.rs

@@ -1,4 +1,4 @@
-//! Windows-specific utilities: native error dialogs and WebView2 detection.
+//! Windows-specific utilities: native error dialogs for fatal startup failures.
 
 use windows_sys::Win32::Foundation::HWND;
 use windows_sys::Win32::UI::WindowsAndMessaging::{
@@ -39,98 +39,3 @@ pub fn show_warning_ok_cancel(title: &str, message: &str) -> bool {
     };
     result == IDOK
 }
-
-/// Check whether the WebView2 Runtime is installed by querying the registry.
-///
-/// Checks both per-machine and per-user install locations. Returns `true` if
-/// a version string (the `pv` value) is found and is not empty, meaning at
-/// least one WebView2 distribution is present.
-pub fn is_webview2_installed() -> bool {
-    use windows_sys::Win32::System::Registry::{HKEY, HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE};
-
-    const WEBVIEW2_GUID: &str = "{F3017226-FE2A-4295-8BEE-154267D3BAFE}";
-
-    let sub_keys: &[(HKEY, &str)] = &[
-        (
-            HKEY_LOCAL_MACHINE,
-            &format!(
-                "SOFTWARE\\Microsoft\\EdgeUpdate\\Clients\\{}",
-                WEBVIEW2_GUID
-            ),
-        ),
-        (
-            HKEY_LOCAL_MACHINE,
-            &format!(
-                "SOFTWARE\\WOW6432Node\\Microsoft\\EdgeUpdate\\Clients\\{}",
-                WEBVIEW2_GUID
-            ),
-        ),
-        (
-            HKEY_CURRENT_USER,
-            &format!(
-                "Software\\Microsoft\\EdgeUpdate\\Clients\\{}",
-                WEBVIEW2_GUID
-            ),
-        ),
-    ];
-
-    for (root, sub_key) in sub_keys {
-        if read_registry_string(*root, sub_key, "pv")
-            .map(|v| !v.is_empty())
-            .unwrap_or(false)
-        {
-            return true;
-        }
-    }
-    false
-}
-
-/// Read a REG_SZ value from the Windows registry. Returns `None` on any failure.
-fn read_registry_string(
-    root: windows_sys::Win32::System::Registry::HKEY,
-    sub_key: &str,
-    value_name: &str,
-) -> Option<String> {
-    use windows_sys::Win32::System::Registry::*;
-
-    let wide_sub_key = to_wide(sub_key);
-    let wide_value = to_wide(value_name);
-
-    let mut hkey: HKEY = std::ptr::null_mut();
-    let status =
-        unsafe { RegOpenKeyExW(root, wide_sub_key.as_ptr(), 0, KEY_READ, &mut hkey) };
-    if status != 0 {
-        return None;
-    }
-
-    let mut buf = [0u16; 256];
-    let mut buf_len = (buf.len() * 2) as u32;
-    let mut reg_type: u32 = 0;
-
-    let status = unsafe {
-        RegQueryValueExW(
-            hkey,
-            wide_value.as_ptr(),
-            std::ptr::null(),
-            &mut reg_type,
-            buf.as_mut_ptr() as *mut u8,
-            &mut buf_len,
-        )
-    };
-
-    unsafe { RegCloseKey(hkey) };
-
-    if status != 0 || reg_type != REG_SZ {
-        return None;
-    }
-
-    let char_count = (buf_len as usize) / 2;
-    let s = String::from_utf16_lossy(
-        &buf[..char_count]
-            .iter()
-            .copied()
-            .take_while(|&c| c != 0)
-            .collect::<Vec<u16>>(),
-    );
-    Some(s)
-}