Create a Web applicaiton with signup/signin, upload info from MetraTrader

My goal is to create a web application with sign in & up button. after the user logins to the web application, he or she will be able to connect his MT4 or MT5 account. he or she will be able to input certain risk parameters. for example, I want to be able to set the following: \

·        maximum loss allowed for the day in percentage of the equity.

·        maximum trade size per trade

·        maximum number of open positions at once in an account.

Please take a look at the picture for quick overview.