class Sidekiq::Stats::History

def date_stat_hash(stat)
  i = 0
  stat_hash = {}
  keys = []
  dates = []
  while i < @days_previous
    date = @start_date - i
    keys << "stat:#{stat}:#{date}"
    dates << date
    i += 1
  end
  Sidekiq.redis do |conn|
    conn.mget(keys).each_with_index do |value, i|
      stat_hash[dates[i].to_s] = value ? value.to_i : 0
    end
  end
  stat_hash
end

def failed
  date_stat_hash("failed")
end

def initialize(days_previous, start_date = nil)
  @days_previous = days_previous
  @start_date = start_date || Time.now.utc.to_date
end

def processed
  date_stat_hash("processed")
end