fix: make sure that directory of private/public ssh key exists before creating ssh key

src/user.ts

@@ -191,16 +191,24 @@ export default class User {
     const privateKeyStr = privateKey;
 
     try {
-      await fs.writeFileSync(this.getUserPublicKeyPath(), publicKeyStr);
+      // 确保公/私钥目录存在
-      await fs.writeFileSync(this.getUserPrivateKeyPath(), privateKeyStr);
+      const publicKeyDir = path.dirname(this.getUserPublicKeyPath())
+      if (!fs.existsSync(publicKeyDir)) {
+        console.log(`Directory ${publicKeyDir} does not exist, creating it...`);
+        // 公钥与私钥的目录一样，所以只用创建一次
+        fs.mkdirSync(publicKeyDir, {recursive: true})
+      }
+
+      fs.writeFileSync(this.getUserPublicKeyPath(), publicKeyStr);
+      fs.writeFileSync(this.getUserPrivateKeyPath(), privateKeyStr);
       // limit the permission of private key to prevent that the private key not works
-      await fs.chmodSync(this.getUserPrivateKeyPath(), 0o600)
+      fs.chmodSync(this.getUserPrivateKeyPath(), 0o600)
       console.log(`User's ssh key has been created.`)
       // 更新local user private key path
       this.updateLocalUserPrivateKeyPath(this.getUserPrivateKeyPath())
       console.log(`Update local user private key path.`)
     } catch (error) {
-      console.error("Failed to write public/private key into the default ssh public/key file: ", error);
+      console.error(`Failed to write public/private key into the user(${this.username}) ssh public/key file: `, error);
     }
   }
 }