Banksy

Run:

- npm i
- npm run local:db
- npm run db:init
- npm run db:seed
- npm start

API Routes

• GET /:id/interests
• POST /:id/transactions
  • request body example 1:

  {
     "amount": -5000,
     "createdAt": "2023-01-27"
  }

  • request body example 2 (without createdAt):

  {
     "amount": 10000
  }

Run API Routes

• postman: bank-sy.postman_collection.json

Cases

1. Investor creates their first investment for $10.000 on January 1st. Expected result: Accrues $16.99 of interest on January, 31st. (31 days * 2% / 365 days in a year * $10.000 balance)
2. Investor creates their first investment for $10.000 on January 1st. On January 5, they add $5.000. Expected result: Accrues $24.38 of interest on January, 31st.
3. Investor creates their first investment for $10.000 on January 1st. On January 5, they withdraw $5.000. Expected result: Accrues $9.59 of interest on January, 31st.
4. Investor creates their first investment for $10.000 on January 1st. On January 15, they add $5.000. On January 27, they withdraw $5.000. Expected result: Accrues $20.27 of interest on January, 31st.

Answers

Today is 2023-01-31

Scenario 1

31 * .02/365 * 10000 = $16.99
- Total: 16.99

Scenario 2

31 * .02/365 * 10000 = $16.99
27 * .02/365 * 5000 = $7.39
- Total: 24.38

Scenario 3

31 * .02/365 * 10000 = $16.99
27 * .02/365 * -5000 = $7.39
- Total: 24.38

Scenario 4

31 * .02/365 * 10000 = $16.99
12 * .02/365 * -5000 = -$3.28
12 * .02/365 * 5000 = $3.28
- Total: 20.27

Arch

DB Diagram

CICD / DevOps