Open trade based on JSON webserver response

I need an EA that can be attached to multiple charts (EURUSD, GBPUSD, XAUUSD, etc..) at the same time and do the following:

• can run on Strategy Tester
  
  
• use on chart buttons/inputs ( similar design to: https://www.mql5.com/en/market/product/11738 )
  
  
1. On/Off (iONOFF) – enable/disable the EA
2. Sell (iSELL), Buy(iBUY) – by clicking Sell or Buy buttons, you can enable (green) or disable (red) opening a new order (position) for SELL and/or BUY
3. iKLOT – lot ratio; when opening a new order the lot size will be calculated by minlot = balance/iKLOT; for example if balance is 1000 and iKLOT is 20000 the opening position will be 0.05 lot; allowed values: [1 - 10000000]
4. SLpips - when opening a new order use this number of pips to configure StopLoss;  0 = disable configure SL; allowed values: [0 - 10000]
5. TPpips - when opening a new order use this number of pips to configure TakeProfit; 0 = disable configure TP; allowed values: [0 - 10000]
6. BreakNo - numeric - don't open new orders if we get [BreakNo] losses (orders that were closed by SL) in the last [BreakTime] minutes; allowed values: [0 - 10000]
7. BreakTime - minutes for BreakNo; allowed values: [0 - 1000]
8. SEC - numeric; allowed values: [0.1 - 100]
9. PROB - numeric; is used to decide if the EA will open a new order or not; allowed values: [0 - 100]
   
   
• inputs that are not visible on chart:
  all inputs on chart + the following 2:
  URL - this will be the URL the EA uses to get actions
  TOKEN - for security purposes
  
  
• don't open new positions on that chart if one is already opened
  
  
• open URL: eg: http://localhost/getdecision.php?token=AAAAA11111&symbol=EURUSD&datetime=2017-05-01|23:59:59&ask=1.12075&bid=1.12085
  every X seconds where X can be configured differently on each chart. X can be configured using on chart input (SEC)
  
  
• the EA will open buy/sell orders based on URL response (JSON)

• the URL will respond with a JSON array with the following variables:
  eg: { "action": "buy", "prob": 50, "status":"General message displayed on chart" }
  
  
• action: buy / sell / wait - this tells us the direction for opening a new order; wait means we don't open a new order
  
• prob: 1-100 - if the JSON prob value >= PROB value in the chart configuration then we can open a new order; if JSON prob value < PROB we don't one a new order
• status - this is a text message we show on the
  
  
• based on JSON the EA will:
  if action=buy/sell AND prob(json variable) > PROB(EA input) then: open position (minlot = balance/iKLOT), configure SL and TP
  if action=wait then: don't do anything