module PIM::Statistics::Utils

# File statistics.rb, line 24
def collect_dates_from_history item, attribute, min_date = nil, max_date = nil, format = '%Y-%m-%d'
  dates = []
  date = to_date(item[attribute])
  dates << date.strftime(format) if date_between?(date, min_date, max_date)
  history_records(item).each do |record|
    value = record[attribute]
    next if is_empty?(value)
    if is_array?(value)
      date = to_date(value['oldValue__'])
    else
      date = to_date(value)
    end
    next if !date_between?(date, min_date, max_date)
    date = formatted_date(date)
    dates << date if not dates.include?(date)
  end
  dates
end

# File statistics.rb, line 43
def formatted_date date, format = '%Y-%m-%d'
  date.strftime(format)
end

# File statistics.rb, line 47
def get_array_param params, key
  param = params[key.to_sym] || params[key.to_s] || []
  param = [param] if not is_array?(param)
  param
end

# File statistics.rb, line 53
def get_item_values item, keys
  values = []
  keys.each do |key|
    values << item[key.to_s]
  end
  values
end

# File statistics.rb, line 10
def history_records item
  return [] if is_empty?(item) or is_empty?(item['history__'])
  history = item['history__']
  if history.is_a?(String)
    begin
      history = JSON.parse(history)
    rescue Exception => e
      log_error("Could not parse history", e)
      return []
    end
  end
  return history['history']
end