Guild management timer

local frame = CreateFrame("Frame")
local timer = frame:CreateAnimationGroup()
timer.animation = timer:CreateAnimation()
timer.animation:SetDuration(1)
timer.animation:SetOrder(1)
timer.frame = frame

timer.testMode = true

local didAction, lastName, lastAction
timer:SetScript("OnFinished", function(self)
    didAction = false
    for i = 1, GetNumGuildMembers() do
        local name, _, rankIndex, level, _, _, _, _, _, _, classFileName = GetGuildRosterInfo(i)
        -- Make it consistent with values for SetGuildMemberRank() for sanity's sake.
        rankIndex = rankIndex + 1

        if rankIndex == 1 or rankIndex == 2 or rankIndex == 3 then -- Guild master, Officers, Intouchables
            return
        end

        if CanGuildPromote() then
            local targetRank
            if level >= 1 and level <= 79 and rankIndex ~= 7 then
                targetRank = 7
            elseif level >= 80 and level <= 84 and rankIndex ~= 6 then
                targetRank = 6
            elseif level >= 85 and level <= 89 and rankIndex ~= 5 then
                targetRank = 5
            elseif level == 90 and rankIndex ~= 4 then
                targetRank = 4
            end

            if self.testMode then
                print("PROMOTE", name, targetRank)
            else
                if lastAction == "PROMOTE" and lastName == name then
                    -- Avoid infinite loops if the action is failing:
                    return print("Action failed:", lastAction, lastName, targetRank)
                end
                didAction, lastAction, lastName = true, "PROMOTE", name
                SetGuildMemberRank(i, targetRank)
                break
            end
        end

        if not ignoreList[name] and CanGuildRemove() then
            local year, month, day = GetGuildRosterLastOnline(i)
            -- (year > 0 or month > 0 or day > 21)
            if year and (
                (rankIndex == 7
                    and (day >= 1 and level == 1)
                    or (day >= 2 and level == 5 and classFileName == "DEATHKNIGHT")
                    or (day >= 3 and ((level > 1 and level <= 5) or (level > 55 and level <= 55 and classFileName == "DEATHKNIGHT")))
                    or (day >= 14 and level > 5 and level <= 79)
                )
                or (rankIndex == 6 and day >= 21)
                or ((rankIndex == 4 or rankIndex == 5) and day >= 28)
            ) then
                if self.testMode then
                    print("REMOVE", name)
                else
                    if lastAction == "REMOVE" and lastName == name then
                        -- Avoid infinite loops if the action is failing:
                        return print("Action failed:", lastAction, lastName)
                    end
                    didAction, lastAction, lastName = true, "REMOVE", name
                    GuildUninvite(name)
                    break
                end
            end
        end
    end

    -- Start it again if we did something.
    if didAction then
        self:Play()
    end
end)