class Resque::Failure::RedisMultiQueue

def self.all(offset = 0, limit = 1, queue = :failed)
  Resque.list_range(queue, offset, limit)
end

def self.clear(queue = :failed)
  queues = queue ? Array(queue) : self.queues
  queues.each { |queue| data_store.clear_failed_queue(queue) }
end

def self.count(queue = nil, class_name = nil)
  if queue
    if class_name
      n = 0
      each(0, count(queue), queue, class_name) { n += 1 }
      n
    else
      data_store.num_failed(queue).to_i
    end
  else
    total = 0
    queues.each { |q| total += count(q) }
    total
  end
end

def self.data_store
  Resque.data_store
end

def self.each(offset = 0, limit = self.count, queue = :failed, class_name = nil, order = 'desc')
  items = all(offset, limit, queue)
  items = [items] unless items.is_a? Array
  reversed = false
  if order.eql? 'desc'
    items.reverse!
    reversed = true
  end
  items.each_with_index do |item, i|
    if !class_name || (item['payload'] && item['payload']['class'] == class_name)
      id = reversed ? (items.length - 1) + (offset - i) : offset + i
      yield id, item
    end
  end
end

def self.queues
  data_store.failed_queue_names(:failed_queues)
end

def self.remove(id, queue = :failed)
  data_store.remove_from_failed_queue(id,queue)
end

def self.remove_queue(queue)
  data_store.remove_failed_queue(Resque::Failure.failure_queue_name(queue))
end

def self.requeue(id, queue = :failed)
  item = all(id, 1, queue)
  item['retried_at'] = Time.now.strftime("%Y/%m/%d %H:%M:%S")
  data_store.update_item_in_failed_queue(id,Resque.encode(item),queue)
  Job.create(item['queue'], item['payload']['class'], *item['payload']['args'])
end

def self.requeue_all
  queues.each { |queue| requeue_queue(Resque::Failure.job_queue_name(queue)) }
end

def self.requeue_queue(queue)
  failure_queue = Resque::Failure.failure_queue_name(queue)
  each(0, count(failure_queue), failure_queue) { |id, _| requeue(id, failure_queue) }
end

def data_store
  Resque.data_store
end

def filter_backtrace(backtrace)
  index = backtrace.index { |item| item.include?('/lib/resque/job.rb') }
  backtrace.first(index.to_i)
end

def save
  data = {
    :failed_at => Time.now.strftime("%Y/%m/%d %H:%M:%S %Z"),
    :payload   => payload,
    :exception => exception.class.to_s,
    :error     => UTF8Util.clean(exception.to_s),
    :backtrace => filter_backtrace(Array(exception.backtrace)),
    :worker    => worker.to_s,
    :queue     => queue
  }
  data = Resque.encode(data)
  data_store.push_to_failed_queue(data,Resque::Failure.failure_queue_name(queue))
end