Requested WoW macro

What i would like is a macro for a healer in PvP, particuarly arena.

what i request is some kind off macro that will enable me to cast say ''Holy Shock'' or ''Word of Glory'' at my arena parteners name as i always play with the same player.

so cast ''healing spell @charecters name''

but also, i was hoping say i ''hold down shift'' and press the macro it will cast it upon myself.

and if ''@charecters name'' is not in range, and i have not holded down shift, the spell will be performed onto however my selected target is.

Thanks in advance.