3 files changed, 64 insertions, 2 deletions
diff --git a/packages/desktop/src-tauri/src/lib.rs b/packages/desktop/src-tauri/src/lib.rs
index 135f7b072..14105e5dd 100644
--- a/packages/desktop/src-tauri/src/lib.rs
+++ b/packages/desktop/src-tauri/src/lib.rs
@@ -20,6 +20,7 @@ use std::{
     path::PathBuf,
     sync::{Arc, Mutex},
     time::Duration,
+    process::Command,
 };
 use tauri::{AppHandle, Manager, RunEvent, State, ipc::Channel};
 #[cfg(any(target_os = "linux", all(debug_assertions, windows)))]
@@ -142,6 +143,62 @@ async fn await_initialization(
         .map_err(|_| "Failed to get server status".to_string())?
 }
 
+#[tauri::command]
+#[specta::specta]
+fn check_app_exists(app_name: &str) -> bool {
+    #[cfg(target_os = "windows")]
+    {
+        check_windows_app(app_name)
+    }
+    
+    #[cfg(target_os = "macos")]
+    {
+        check_macos_app(app_name)
+    }
+    
+    #[cfg(target_os = "linux")]
+    {
+        check_linux_app(app_name)
+    }
+}
+
+#[cfg(target_os = "windows")]
+fn check_windows_app(app_name: &str) -> bool {
+    // Check if command exists in PATH, including .exe
+    return true;
+}
+
+#[cfg(target_os = "macos")]
+fn check_macos_app(app_name: &str) -> bool {
+    // Check common installation locations
+    let mut app_locations = vec![
+        format!("/Applications/{}.app", app_name),
+        format!("/System/Applications/{}.app", app_name),
+    ];
+
+    if let Ok(home) = std::env::var("HOME") {
+        app_locations.push(format!("{}/Applications/{}.app", home, app_name));
+    }
+    
+    for location in app_locations {
+        if std::path::Path::new(&location).exists() {
+            return true;
+        }
+    }
+    
+    // Also check if command exists in PATH
+    Command::new("which")
+        .arg(app_name)
+        .output()
+        .map(|output| output.status.success())
+        .unwrap_or(false)
+}
+
+#[cfg(target_os = "linux")]
+fn check_linux_app(app_name: &str) -> bool {
+    return true;
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     let builder = tauri_specta::Builder::<tauri::Wry>::new()
@@ -152,7 +209,8 @@ pub fn run() {
             await_initialization,
             server::get_default_server_url,
             server::set_default_server_url,
-            markdown::parse_markdown_command
+            markdown::parse_markdown_command,
+            check_app_exists
         ])
         .events(tauri_specta::collect_events![LoadingWindowComplete])
         .error_handling(tauri_specta::ErrorHandlingMode::Throw);
diff --git a/packages/desktop/src/bindings.ts b/packages/desktop/src/bindings.ts
index 46dcb7f44..562a98aca 100644
--- a/packages/desktop/src/bindings.ts
+++ b/packages/desktop/src/bindings.ts
@@ -8,10 +8,10 @@ export const commands = {
 	killSidecar: () => __TAURI_INVOKE<void>("kill_sidecar"),
 	installCli: () => __TAURI_INVOKE<string>("install_cli"),
 	awaitInitialization: (events: Channel) => __TAURI_INVOKE<ServerReadyData>("await_initialization", { events }),
-
 	getDefaultServerUrl: () => __TAURI_INVOKE<string | null>("get_default_server_url"),
 	setDefaultServerUrl: (url: string | null) => __TAURI_INVOKE<null>("set_default_server_url", { url }),
 	parseMarkdownCommand: (markdown: string) => __TAURI_INVOKE<string>("parse_markdown_command", { markdown }),
+	checkAppExists: (appName: string) => __TAURI_INVOKE<boolean>("check_app_exists", { appName }),
 };
 
 /** Events */
diff --git a/packages/desktop/src/index.tsx b/packages/desktop/src/index.tsx
index 116689673..d3377e95a 100644
--- a/packages/desktop/src/index.tsx
+++ b/packages/desktop/src/index.tsx
@@ -340,6 +340,10 @@ const createPlatform = (password: Accessor<string | null>): Platform => ({
   parseMarkdown: (markdown: string) => commands.parseMarkdownCommand(markdown),
 
   webviewZoom,
+
+  checkAppExists: async (appName: string) => {
+    return commands.checkAppExists(appName)
+  },
 })
 
 let menuTrigger = null as null | ((id: string) => void)