Ability to manage portfolio

[sko-grace]

User story: As a user, I should be able to sell and purchase stocks given my current liquidity and portfolio.

Acceptance criteria: Purchase and Sell modals created that have functionality to alter a user's portfolio within the constraints of how much they have available to purchase or sell.

[sko-grace]

PurchaseStock

• Requirements: userid, symbolName, numStocks)

• Should do the following:

• Determine if user exists and get their current liquidity

• Call Finnhub to get current value of stock

• Calculate value of current stock * num of shares the user wants to buy

• Check available liquidity versus cost of purchase

• Complete purchase if enough liquidity

• Return liquidity after purchase with status code

SellStock

• Requirements: userid, symbolName, numStocks)

• Should do the following:

• Determine if user exists and get their current liquidity

• Call Finnhub to get current value of stock

• Calculate value of current stock * num of shares the user wants to sell

• Check that numStocks selling does not surpass current num owned

• Complete purchase if enough shares owned

• Return liquidity after sale with status code