Requested WoW macro

I need a macro that will allow me to do something like this:

/cast Death Strike if Glyph of Succor active (if this is even possible) else (see below) cast Soul Reaper if target at/below 37% if level (boss)/40% if level 90-(non boss) else cast Death Coil if Sudden Doom active/Runic Power is above 88 else cast Scourge Strike

Looks really complicated, I know. I’ve been reading up on how to do macros to see if I could create this, but I don’t think I could pull it off in any reasonable amount of time. Basically, all with one press of a button, the macro will automatically prioritize a perfect rotation and use of procs without wasting any resources. This will allow me to conserve Runic Power better, and better prepare for Soul Reaper.

Thank you!