Code / replicate a Grid Robot in MQL5 identical as the MT4 version

I have this robot in Mt4, it's a grid based robot and a money management robot, works both ways. It is a manual trading oriented robot, so is not magical or make tons of money, but I find it useful for my stile of trading.

I don't have the source code, but for the more complex parts I can get them from original coder.

• I need it to work -exactly- as the mt4 versión, so you must take your time to use it so you can code all functionality.
• I need it to be coded in procedural style, no OO/clases.
• Code must be placed in separeted files in order to be organized properly.
• All code must be placed in functions, that will be called from ontick/oninit modules.
• Buttons and text on chart must be coded with a very simple function, wich I'll provide.
• Code must be clear, organized, an as simple as possible.

Thank you.