- Fix response token from login
- Finish Update order in matching engine. Considering queue is consistently updating
- Finish buy market
- Finish buy
- InsertStock need to create new row. Or add stock to the exisitng row
- stocks db may not need current_price column
- check database logic: such as cannot add stock with the same name
- Potect db e.g cannot be negative number such as stock quantity and wallet. Otherwiise give error
- Check wallet before buy
- check stock qunatity before sell
- Check if stock cannot find in user/stock_users/stock db when buy/sell