propine-test v1.0.0

Question 1 - Programming

We're looking at your programming ability. It must not only work, it should be maintainable.

Let us assume you are a crypto investor. You have made transactions over a period of time which is logged in a CSV file. Write a command line program that does the following

• Given no parameters, return the latest portfolio value per token in USD
• Given a token, return the latest portfolio value for that token in USD
• Given a date, return the portfolio value per token in USD on that date
• Given a date and a token, return the portfolio value of that token in USD on that date

The CSV file has the following columns

• timestamp: Integer number of seconds since the Epoch
• transaction_type: Either a DEPOSIT or a WITHDRAWAL
• token: The token symbol
• amount: The amount transacted