gistfile1.txt

  def patient_payers(type, id, range, filters)
    # get hospital's patients at the hospital during range
    # by looking at admissions table

    active_patients = patients(type, id, range, filters)

    # using list of patient_ids, get list of patient-payer relationships
    payers = set([])
    count = Counter()

    for patient in active_patients:
      # using list of patient-payer relationships, calculate count of payers active during range
      for payer_entry in patient.patient_payers:
        active = false
        for status_update in payer_entry.active_history:
          if status_update.value == True and status_update.updated_at >= range.start and status_update.updated_at <= range.end:
            active = True
            break
          #check for first update after end of range
          if status_update.updated_at > range.end:
            break
          elif status_update.value == True:
            active = True
          elif status_update.value == False:
            if status_update.updated_at > range.start and status_update.updated_at <= range.end:
              active = True
              break
            else:
              active = False

        if active:
          count[payer_entry.id] += 1

    return count
  end