Create an ea from an expert advisor

I am looking for an indicator that gives me a signal in the following conditions: 

BUY alert 

Main conditions 

Price  >  50 SM

EMA 10 > SMA 50

EMA 15 > SMA 50

EMA 10 >  EMA15

Then: 

-Candlesticks is closing below the 10 and 15 EMA

After it closing is below it has to close above the 10 and 15 EMA What should lead to the signal.There can be some candlesticks between before it goes above the 10/15 EMA again. 

Example below:

SELL alert 

Main conditions 

Price  <  50 SM

EMA 10 < SMA 50

EMA 15 < SMA 50

EMA 10 <  EMA15

Then: 

-Candlesticks is closing above the 10 and 15 EMA

After it closing is above it has to close below the 10 and 15 EMA What should lead to the signal. There can be some candlesticks between before it goes under the 10/15 EMA again. 

 Example below: