local inter = CreateFrame("Frame", "Interruptor", UIParent)

function inter:UNIT_SPELLCAST_START(event, unitID, spell, rank, lineID, spellID)
   --print("Spell cast start for "..spell)
end

function inter:UNIT_SPELLCAST_INTERRUPTED(unitID, spell, rank, lineID, spellID)
  --print("You have been interrupted")
end

function inter:COMBAT_LOG_EVENT_UNFILTERED(event, timeStamp, event1, hideCaster, sourceGUID, sourceName, sourceFlags, destGUID, destName, destFlags, spellId, ...)
  if (event1 == "SPELL_INTERRUPT") then
    print("Interrupter: "..sourceName) -- who interrupted
    print("Interruptee: "..destName)      -- who has been interrupted
    SendChatMessage(destName.."'s ..' has been interrupted with "..GetSpellLink(spellId).." by "..sourceName.."!", "GUILD", nil, nil)
  end
end

inter:SetScript("OnEvent",
                    function(self, event, ...)
                            if self[event] then
                                    return self[event] (self, event, ...)
                            end
                    end)

inter:RegisterEvent("UNIT_SPELLCAST_START")
inter:RegisterEvent("UNIT_SPELLCAST_INTERRUPTED")
inter:RegisterEvent("COMBAT_LOG_EVENT_UNFILTERED")