Script which can scan on all symbols and output signals to a file

Hi,

 I need a script  to use on stock market to scan the whole market using an indicator and write the signals from the indicator to a file.

I have a customized MT5 which has more  than thousand symbols of a specific  stock market loaded in it. 

Here is what the script should exactly do:

1 - Fetch and load one stock market symbols.

2 - Perform indicator job on the  symbol on daily time-frame.

3 -  If a buy/sell signal is received on the symbol using the specified indicator, output that signal to a file.

(the output format can be a line in the OS file like this: DATE,INDICATOR_NAME,SYMBOL_NAME,BUY/SELL)

 4 - fetch the next symbol and do the whole thing again until all the symbols in the MT5 is finished. (more than 1000 symbols)

* Design of the script should be somehow that does not put too much pressure on the application and makes it unresponsive (for example with loading too many symbols in market watch at the same time) 

* The indicator to be used is not of concern at this stage. any free indicator which make buy/sell signals can be used.

* Source code is needed when job is finished, to be used with other indicators