Track a debuff and start a timer when it's removed

[FranekW]

Hello,

I am trying to build a simple function which will track a certain debuffs, that is to track moments when debuffs are applied and when they are removed. Then I would like to start a simple timer when the debuff which I track is over.

First I tried using UNIT_AURA but it gets fired every time a debuff changes or do damage to a unit. Then I came across COMBAT_LOG_EVENT, which is quite complicated. I have a simple function which I tried to create based on wowpedia and some code from WoW Interface:

function(timestamp, event, hideCaster,
    sourceGUID, sourceName, sourceFlags, sourceRaidFlags,
    destGUID, destName, destFlags, destRaidFlags, spellId, spellName, spellSchool, ...)
 
    if event == "SPELL_AURA_APPLIED" or event == "SPELL_AURA_REFRESHED" then
        auraType, amount = ...
        if auraType == "DEBUFF" then
            -- Check the debuff is in the list to track
            -- cache Target's GUID and the debuff's ID
        end
    elseif event == "SPELL_AURA_REMOVED" then
        auraType, amount = ...
        if check whether you track that debuff then
            -- Check if debuff is in cache, if it was applied
            -- if Yes, removed from cache and start a timer
        end
    else
        -- do things in case debuff was neither atarted nor removed
    end
end

So the above function is run such that I pass all parameters COMBAT_LOG_EVENT returns. Is this function any close to do what I need it to do? I am simply need to know what aura is applied to a target and when it is over. Then I would like to start a timer.

Thanks.