gistfile1.txt

def calc_cached_price_ranges()
    cached_our_price = "n/a"  # not nil, so we don't perpetually re-calculate
    cached_full_price = "n/a" # not nil, so we don't perpetually re-calculate

    find active_and_expired_offersets (status IN ('active','expired'))

    if (active_and_expired_offersets) 
        # we have active offersets, so we want to look at all the offers.
        # first, let's break out the ones that aren't sold out.
        all_active_offers = []
        offers_with_inventory = []
        active_and_expired_offersets.each { |offerset|
            offerset.offers.each { |offer|
                if (offer.quantity || offer.parent_offer_id) 
                    all_offers.push(offer)
                    if (offer.quantity_available > 0) {
                        offers_with_inventory.push(offer)
                    end
                end
            }
        }
        if (!offers_with_inventory.empty?) 
            cached_our_price, cached_full_price = calc_price_ranges(offers_with_inventory)
        elsif (!all_active_offers.empty?)
            cached_our_price, cached_full_price = calc_price_ranges(all_active_offers)
            cached_our_price = 'SOLD OUT'        
        end

    end

    if (cache_our_price == 'n/a/')  # nothing above worked.
        find closed_offersets (status = 'closed')
    
        closed_offers = []
        closed_offersets.offers.each { |offer|
            closed_offers.push(offer) if (offer.quantity || offer.parent_offer_id)
        }
    
        cached_our_price, cached_full_price = calc_price_ranges(closed_offers)
    end

    return cached_our_price, cached_full_price

end


def calc_price_range(offers)
    our_prices = offers.map{&:our_price}
    full_prices = offers.mpa{&:full_price}
    range(our_prices), range(full_prices)
end

def range(prices)
    low = prices.smallest
    high = prices.largest
    if (low == high) 
        (low == 0) ? "FREE" : currency(low)
    else 
        "#{ (low == 0) ? "FREE" : currency(low) } - #{ currency(high) }"
    end
end