chore: add mcp write and read commands

src-tauri/src/core/cmd.rs

@@ -7,6 +7,9 @@ use tauri::{AppHandle, Manager, Runtime, State};
 use super::{server, setup, state::AppState};
 
 const CONFIGURATION_FILE_NAME: &str = "settings.json";
+const DEFAULT_MCP_CONFIG: &str = r#"{
+    "mcpServers": {}
+}"#;
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct AppConfiguration {
@@ -352,3 +355,29 @@ pub async fn call_tool(
 
     Err(format!("Tool {} not found", tool_name))
 }
+
+#[tauri::command]
+pub async fn get_mcp_configs(app: AppHandle) -> Result<String, String> {
+    let mut path = get_jan_data_folder_path(app);
+    path.push("mcp_config.json");
+    log::info!("read mcp configs, path: {:?}", path);
+
+    // Create default empty config if file doesn't exist
+    if !path.exists() {
+        log::info!("mcp_config.json not found, creating default empty config");
+        fs::write(&path, DEFAULT_MCP_CONFIG)
+            .map_err(|e| format!("Failed to create default MCP config: {}", e))?;
+    }
+
+    let contents = fs::read_to_string(path).map_err(|e| e.to_string())?;
+    return Ok(contents);
+}
+
+#[tauri::command]
+pub async fn save_mcp_configs(app: AppHandle, configs: String) -> Result<(), String> {
+    let mut path = get_jan_data_folder_path(app);
+    path.push("mcp_config.json");
+    log::info!("save mcp configs, path: {:?}", path);
+
+    fs::write(path, configs).map_err(|e| e.to_string())
+}

src-tauri/src/lib.rs

@@ -39,6 +39,8 @@ pub fn run() {
             core::cmd::app_token,
             core::cmd::start_server,
             core::cmd::stop_server,
+            core::cmd::save_mcp_configs,
+            core::cmd::get_mcp_configs,
             // MCP commands
             core::cmd::get_tools,
             core::cmd::call_tool,

web/screens/Settings/MCP/index.tsx

@@ -17,31 +17,9 @@ const MCP = () => {
 
   const readConfigFile = useCallback(async () => {
     try {
-      const configPath = await joinPath([janDataFolderPath, 'mcp_config.json'])
-
-      // Check if the file exists
-      const fileExists = await fs.existsSync(configPath)
-
-      if (fileExists) {
       // Read the file
-        const content = await fs.readFileSync(configPath, 'utf-8')
+      const content = await window.core?.api.getMcpConfigs()
       setConfigContent(content)
-      } else {
-        // Create a default config if it doesn't exist
-        const defaultConfig = JSON.stringify(
-          {
-            servers: [],
-            settings: {
-              enabled: true,
-            },
-          },
-          null,
-          2
-        )
-
-        await fs.writeFileSync(configPath, defaultConfig)
-        setConfigContent(defaultConfig)
-      }
 
       setError('')
     } catch (err) {
@@ -70,11 +48,7 @@ const MCP = () => {
         setIsSaving(false)
         return
       }
-
-      const configPath = await joinPath([janDataFolderPath, 'mcp_config.json'])
-
-      // Write to the file
-      await fs.writeFileSync(configPath, configContent)
+      await window.core?.api?.saveMcpConfigs({ configs: configContent })
 
       setSuccess('Config saved successfully')
       setIsSaving(false)

web/services/tauriService.ts

@@ -19,6 +19,8 @@ export const Routes = [
   'getThreadAssistant',
   'createThreadAssistant',
   'modifyThreadAssistant',
+  'saveMcpConfigs',
+  'getMcpConfigs',
 ].map((r) => ({
   path: `app`,
   route: r,