The Link Generator System is a web application developed using Spring Boot that allows generating payment links for invoices and facilitating the payment process for customers.

The project utilizes several dependencies managed via Maven:

• Spring Boot Starter Web
• Spring Boot Starter Undertow
• Spring Boot Starter Thymeleaf
• Spring Boot Starter Data JPA
• Spring Boot Starter Mail
• Spring Boot Starter Validation
• Spring Boot Starter Security
• H2 Database
• Lombok
• ModelMapper
• JSON Web Token (JWT) libraries
• Java JWT
• JUnit
• Spring Boot Starter Test
• Spring Security Test

The application uses an H2 in-memory database configured as follows:

• URL: jdbc:h2:mem:lgs
• Username: sa
• Password: [blank]

Email properties are configured for SMTP using Gmail:

• Host: smtp.gmail.com
• Port: 465
• Username: [Your Gmail username]
• Password: [Your Gmail password]

JWT properties are configured for token generation:

• Expiration Time: 89999999 ms
• Secret Key: [Your JWT secret key]

Thymeleaf template configuration:

• Prefix: classpath:/templates/
• Suffix: .html

To build and run the project, ensure you have Maven and Java installed on your system. Then, execute the following command:

mvn spring-boot:run

The application will start, and you can access it via http://localhost:8080.

The project includes unit tests and integration tests. You can run the tests using Maven:

mvn test

For API documentation, refer to the Postman documentation: Link to API Documentation

Email sent to customer with details of invoice that require payment

Wrong mock payment details inserted

Error page displayed due to invalid details

When details are valid, a success page is displayed with information

Email sent to Customer when mock payment is successful