A simple buy and sell indicator

Hello coders,

I have a probability simple idea to code. Two versions of similar strategy, I prefer to separate both but you can do it in the same indicator if want using a select box
to active strategy 1 or 2.

I strategy 1 is to read the previews candle and send signal to the same side. Example previews close red then Sell signal (with buffer 0)
if close green then Buy Signal (with buffer 1). Every new candle need to "copy" the side of previews.

the strategy 2 is to send buy or sell every new candle, without any other trigger. Example: starting with buy, next candle sell, next candle buy, and continue.
this second version I need to have select box to choice if I want to start the sequence with buy or with sell.