Interrupt focus macro

[Tuckle-tarren-mill]

hello, anyone here who can share a macro where if u press it and got a enemy as focus u interrupt that one but if you got a friendly as focus you only interrupt your target?

could be a good macro for dungeons where interrupt target isnt the one who needs to be interrupted but also works when tanking raids and i got the off tank as focus target

[Papudeath-outland (Papudeath)]

#showtooltip
/cast [@focus, exists, harm] Counterspell; Counterspell

Replace Counterspell with your classes interrupt, for example if you were a feral druid, write

#showtooltip
/cast [@focus, exists, harm] Skull Bash; Skull Bash