APR Service

APR (annual percentage rate) service for vehicle loans

Getting Started

Essencial scripts

1. Generate the .env file:
$ cp .env.example .env

2. Install dependencies:
$ yarn

3. Build and start the API:
$ yarn start

Development scripts

Start the API with automatic restarting:
$ yarn dev

Run tests:
$ yarn test

Check tests coverage:
$ yarn test:coverage

Lint files:
$ yarn lint

Prettier files:
$ yarn prettier

Update dependencies:
$ yarn dependencies

The script prepare is required by Husky to automatically have Git hooks enabled after install. You don't need to run it manually.

Specification

This a service that returns the annual percentage rate (APR) for a vehicle loan. The input for the endpoint is:

• The loan amount
• The loan term (in months)
• The person credit score
• The vehicle year
• The vehicle mileage

The annual percentage rate (APR) is calculated using the base rate table below:

Loan Term	Credit Score >= 700	Credit Score between 600 and 699	Credit Score < 600
Up to 36 months	4.75%	5.75%	12.75%
Up to 48 months	5.00%	6.00%	13.25%
Up to 60 months	5.50%	6.65%	N/A

And the following rules:

1. The minimum loan amount for loans up to 36 months is $ 5,000
2. The minimum loan amount for loans up to 48 months is $ 10,000
3. The minimum loan amount for loans up to 60 months is $ 15,000
4. The maximum loan amount for credit score equal to 700 or above is $ 100,000
5. The maximum loan amount for credit score between 600 and 699 is $ 75,000
6. The maximum loan amount for credit score below 600 is $ 50,000
7. If the vehicle year is before 2015, the base rate should be increased in 1.00%
8. If the vehicle mileage is over 100,000, the base rate should be increased in 2.00%

Author

Breno Baptista

License

This project is licensed under the MIT License