Modifier macros for downranking with mouseover

[Abovex]

I'm looking for a macro template that will let me use several ranks of a spell binded on one button using modifiers in the macro and heal on mouseover or heal myself automatically with said ranks if i'm not mousing over a raid frame or someones character.
The tbc onward version of said template would be:
#showtooltip
/cast [nomod,@mouseover,help,nodead][nomod,@player] Spell
/cast [mod:shift,@mouseover,help,nodead][mod:shift,@player] Spell(Rank 1)
/cast [mod:ctrl,@mouseover,help,nodead][mod:ctrl,@player] Spell(Rank 2)
/cast [mod:alt,@mouseover,help,nodead][mod:alt,@player] Spell(Rank 3)

I have no idea how to write such a macro for the 1.12 client.

[Ortogs]

Install Roid macros

Check out this website for how you can do this here: https://denniswg.github.io/Roid-Macros/conditions/mod/

[Forthehorde]

Addon "Quick Heal" is a one-button heal that auto-downranks your heals, as well as auto-selecting your targets based on need and user-set priority. You can find it here: https://github.com/Zebouski/QuickHeal