/**
     Assembles and returns a feed for the provided band.
     This is not a pure getter - it splices chats and shows into the feed and sorts when called.
     This is why the result is stored in the feed controller and only recalled again after an update
     to either chat, feed, or shows.
     */
    func getFeedForBand(band:Band) -> [FeedItem]
    {
        var feedItems = feedItemsByBand[band.id] ?? [FeedItem]()

        //We already have the FB/Twitter items in this array, but we need to add chats.
        //Doing this at this step because we retrieve chats FAR more often than FB/Twitter items
        //Future efficiency todo would be to always maintain this array and tack new chats to the end of it when they arrive.
        addChatsToFeed(feed: &feedItems, forBand: band)

        feedItems.sort(by: { x, y in x.created > y.created })

        addShowsToFeed(feed: &feedItems, forBand: band)

        return feedItems
    }

    /**
     Splices chats from band X into the feed provided.
     No ordering - we'll sort the feed only after all items have been added.
    */
    private func addChatsToFeed(feed feedItems:inout [FeedItem], forBand band:Band)
    {
        for c in ChatManager.instance.currentBandChats
        {
            if c.bandId == band.id
            {
                feedItems.append(FeedItem(chat: c))
            }
        }
    }

    /**
    Add shows to feed at an interval.
    These are little reminder stubs.
    The interval is configured via server config (it's a get property to Config.getValue())
    */
    private func addShowsToFeed(feed feedItems:inout [FeedItem], forBand band:Band)
    {
        let shows = ShowManager.instance.upcomingVisibleShows
        var feedItemIndex = 0

        for show in shows
        {
            if feedItemIndex >= feedItems.count
            {
                feedItems.append(FeedItem(show:show))
                break
            }
                // Last line will return early but using explicit 'else' here for readability
            else
            {
                feedItems.insert(FeedItem(show: show), at: feedItemIndex)
                feedItemIndex += showFeedInterval
            }
        }
    }