Trading Robot Based on Custom Indicator

I have a custom indicator that issues sell and buy alerts and i want to automate the buy and sell signals to be automatic.

The indicator issues buy and sell alerts in all the time frames i therefore need to indicate under which timeframe should the EA initiate the buy or sell trades.

 Long Entries

a) The setup to buy is when the buy signal is true

 Short Entries

a) The setup to sell short when the sell signal is true

 a) Exit a long position when the indicator issues a sell signal

b) Exit a short position when the indicator issues a buy signal

 Input for lot size

Input a trailing stop once in profit. 

Input for take profit and Stop loss

EA should not work is spread is above a pip size which can be input.

Auto calculate lot size based on account balance

I will provide the Indicator, lot size and pip size algorithm.