EA based on Bollinger bands with Martingale

I'm sure this has been done, but I just soon pay for it then search.

I need an EA for MT4 that will open orders based on BB and current open positioning, as well as adding to positions by a multiple, Martingale fashion.

If there are currently NO open positions, then:

Buy x LOTS if ask crosses under lower bb. Execute at the tick level only once per bar

Sell x Lots if bid crosses over upper bb. Execute at the tick level only once per bar.

After the first trade is open, then:

Buy "current total lots" x Multiplier if bar closes under lower bb. Execute at bar close.

Sell "current total lots" x Multiplier if bar closes above upper bb. Execute at bar close.

I'll be managing tp/sl via a separate ea, but might as well add a couple optional tools.

Set to 0 if not to be used, or 1 to be used. These to be executed at tick level, not bar close.

If account profit>0 and ask crosses over moving average of bb, then close all positions.

If account profit>0 and bid crosses under moving average of bb, then close all positions.

if account profit>0 and ask crosses over upper bb, then close all positions.

if account profit>0 and bid crosses under lower bb, then close all positions.

INPUTS would be:

• Standard Bollinger band inputs. (Period 20, Deviations 2, Shift 0, Apply to Close)
• Direction to Open (Buy, Sell, Both)
• Lots (.01)
• Multiplier (2)
• TP Cross Average (0 or 1)
• TP Cross Band (0 or 1)