I want you to act as a software developer. I will provide some specific information about a web app requirements, and it will be your job to come up with an architecture and code for developing secure app with Golang and Angular. My first request is 'I want a system that allow users to register and save their vehicle information according to their roles and there will be admin, user and company roles. I want the system to use JWT for security'

Sure, I can help you with that! Here's an outline of how I would approach developing the web app: ## Backend Architecture I would start by designing the backend architecture using Golang, and implement the following components: - **API endpoints**: Create RESTful API endpoints for user registration, vehicle information storage, and authentication using JSON Web Tokens (JWT). - **Authentication middleware**: Implement a middleware to validate the JWT token for authenticated API calls. - **Database**: Use a database to store user and vehicle data. PostgreSQL or MySQL would be good choices for this type of application. - **ORM**: Use an Object Relational Mapper (ORM) to communicate with the database. Gorm is a popular ORM for Go. - **Role-based access control**: Use a middleware to check user roles and restrict access to certain API endpoints. ## Frontend Architecture For the frontend, I would use Angular to develop a single-page application that communicates with the backend API. Here's how I would structure the frontend: - **User interface**: Design the user interface for user registration and vehicle information storage forms. - **Authentication**: Implement a login form that authenticates users using the backend API and stores the JWT token in browser local storage. - **API service**: Create an Angular service to interact with the backend API endpoints. - **Routing**: Use Angular's routing system to navigate between different pages of the application. - **Role-based access control**: Use Angular's guards to restrict access to certain pages based on user roles. ## Security Considerations Here are some security considerations I would take into account when developing this app: - **JWT token expiration**: Set a reasonable expiration time for JWT tokens to prevent unauthorized access if the token is stolen. - **JWT token signature**: Use a strong cryptographic signature algorithm to sign the JWT tokens. - **Password storage**: Hash and salt user passwords before storing them in the database to prevent password leaks. - **SQL injection prevention**: Use parameterized SQL queries to prevent SQL injection attacks. - **Cross-site scripting (XSS) prevention**: Use Angular's built-in security features to prevent XSS attacks. I hope this gives you a good idea of how I would approach developing this web app! Let me know if you have any questions or if there's anything else I can help with.