public/subjects/java/projects/buy-01

Microservices with Angular

Objectives

Develop an end-to-end e-commerce platform with Spring Boot microservices and Angular. The platform should support user registration (either as a client or seller), authentication, product CRUD functionality exclusively for sellers, and media management for product images.

Instructions

1. Microservices Setup

• Set up your microservice architecture. Consider Kafka for services communications.

2. Enhanced Database Design

+---------------------------+ 1 n +------------------------+ | User | ---------------> | Product | +---------------------------+ +------------------------+ | +String id | | +String id | | +String name | | +String name | | +String email | | +String description | | +String password | | +Double price | | +Enum role (client/seller)| | +Int quantity | | +String avatar | | +String userId | +---------------------------+ +------------+-----------+ | | 1 n | +------------v-----------+ | Media | +------------------------+ | +String id | | +String imagePath | | +String productId | +------------------------+

3. API Development Enhancement

• User Microservice:

  • Users can register as clients or sellers, with sellers having the option to upload an avatar.
  • Authentication and profile management functions should be available.

• Product Microservice:

  • CRUD operations for products, with only authenticated sellers being able to create/update/delete their products.
  • Products should support an associated list of images.

• Media Microservice:

  • Handle media uploads with a size limit of 2MB.
  • Ensure only legitimate image files are uploaded.

4. Front-end Development with Angular

• Sign-In/Up Pages: Implement authentication views. Sellers should have the option to upload/update their avatar.
• Seller Product Management: A dashboard where sellers can manage their products, including uploading images.
• Product Listing: A simple view to display all products without filtering or search capabilities.
• Media Management: A dedicated view for sellers to manage and upload media specifically for their products. Ensure appropriate file size and type validation.

5. Authentication & Authorization

• Implement role-based authentication.
• Use Spring Security with JWT or OAuth2 to distinguish between clients and sellers, ensuring only sellers can manage products and their associated media.

6. Error Handling and Validation

• Provide feedback for incorrect file types or when exceeding the upload size limit.
• Handle cases like a client trying to add a product or a seller trying to modify another seller's product.
• Provide validation for all forms in the application.

7. Security Measures

• HTTPS Encryption: Always use HTTPS to encrypt data in transit. Consider tools like Let's Encrypt for free SSL certificates.
• Sensitive Information Protection: Protect sensitive user information. Passwords and other details should never be exposed in API responses.
• Password Security: Use Spring Security to hash and salt passwords before saving them in the MongoDB database.
• Access Control: Ensure only the seller who created a product can modify or delete it and manage its media.

Testing

Emphasize testing:

• Role-based functionalities.
• Media upload constraints.
• Authentication flows.
• Data integrity for product and media management by sellers.

Resources

Spring Boot Microservices Guide Spring Cloud Eureka Service Discovery Client Setup
Let's Encrypt for ssl(HTTPS)