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# frozen_string_literal: true
class TrendingTags
EXPIRE_HISTORY_AFTER = 7.days.seconds
class << self
def record_use!(tag, account, at_time = Time.now.utc)
return if disallowed_hashtags.include?(tag.name) || account.silenced? || account.bot?
increment_historical_use!(tag.id, at_time)
increment_unique_use!(tag.id, account.id, at_time)
end
private
def increment_historical_use!(tag_id, at_time)
key = "activity:tags:#{tag_id}:#{at_time.beginning_of_day.to_i}"
redis.incrby(key, 1)
redis.expire(key, EXPIRE_HISTORY_AFTER)
end
def increment_unique_use!(tag_id, account_id, at_time)
key = "activity:tags:#{tag_id}:#{at_time.beginning_of_day.to_i}:accounts"
redis.pfadd(key, account_id)
redis.expire(key, EXPIRE_HISTORY_AFTER)
end
def disallowed_hashtags
return @disallowed_hashtags if defined?(@disallowed_hashtags)
@disallowed_hashtags = Setting.disallowed_hashtags.nil? ? [] : Setting.disallowed_hashtags
@disallowed_hashtags = @disallowed_hashtags.split(' ') if @disallowed_hashtags.is_a? String
@disallowed_hashtags = @disallowed_hashtags.map(&:downcase)
end
def redis
Redis.current
end
end
end
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