31 lines
		
	
	
		
			763 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			31 lines
		
	
	
		
			763 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
class Feed
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  def initialize(type, account)
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    @type    = type
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    @account = account
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  end
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  def get(limit, max_id = nil)
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    max_id     = '+inf' if max_id.nil?
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    unhydrated = redis.zrevrangebyscore(key, "(#{max_id}", '-inf', limit: [0, limit])
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    status_map = Hash.new
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    # If we're after most recent items and none are there, we need to precompute the feed
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    if unhydrated.empty? && max_id == '+inf'
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      PrecomputeFeedService.new.(@type, @account, limit)
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    else
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      Status.where(id: unhydrated).with_includes.with_counters.each { |status| status_map[status.id.to_s] = status }
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      unhydrated.map { |id| status_map[id] }.compact
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    end
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  end
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  private
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  def key
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    FeedManager.key(@type, @account.id)
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  end
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  def redis
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    $redis
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  end
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end
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