Class: Groupdate::SeriesBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/groupdate/series_builder.rb

Constant Summary collapse

CHECK_PERIODS = 
[:day, :week, :month, :quarter, :year]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(period:, time_zone:, day_start:, week_start:, **options) ⇒ SeriesBuilder

Returns a new instance of SeriesBuilder.



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# File 'lib/groupdate/series_builder.rb', line 7

def initialize(period:, time_zone:, day_start:, week_start:, **options)
  @period = period
  @time_zone = time_zone
  @week_start = week_start
  @day_start = day_start
  @options = options
  @round_time = {}
end

Instance Attribute Details

#day_start ⇒ Object (readonly)

Returns the value of attribute day_start.



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# File 'lib/groupdate/series_builder.rb', line 3

def day_start
  @day_start
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/groupdate/series_builder.rb', line 3

def options
  @options
end

#period ⇒ Object (readonly)

Returns the value of attribute period.



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# File 'lib/groupdate/series_builder.rb', line 3

def period
  @period
end

#time_zone ⇒ Object (readonly)

Returns the value of attribute time_zone.



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# File 'lib/groupdate/series_builder.rb', line 3

def time_zone
  @time_zone
end

#week_start ⇒ Object (readonly)

Returns the value of attribute week_start.



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# File 'lib/groupdate/series_builder.rb', line 3

def week_start
  @week_start
end

Instance Method Details

#generate(data, default_value:, series_default: true, multiple_groups: false, group_index: nil) ⇒ Object 



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# File 'lib/groupdate/series_builder.rb', line 16

def generate(data, default_value:, series_default: true, multiple_groups: false, group_index: nil)
  series = generate_series(data, multiple_groups, group_index)
  series = handle_multiple(data, series, multiple_groups, group_index)

  unless entire_series?(series_default)
    series = series.select { |k| data[k] }
  end

  value = 0
  result = Hash[series.map do |k|
    value = data.delete(k) || (@options[:carry_forward] && value) || default_value
    key =
      if multiple_groups
        k[0...group_index] + [key_format.call(k[group_index])] + k[(group_index + 1)..-1]
      else
        key_format.call(k)
      end

    [key, value]
  end]

  # only check for database
  # only checks remaining keys to avoid expensive calls to round_time
  if series_default && CHECK_PERIODS.include?(period)
    check_consistent_time_zone_info(data, multiple_groups, group_index)
  end

  result
end

#round_time(time) ⇒ Object 



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# File 'lib/groupdate/series_builder.rb', line 46

def round_time(time)
  time = time.to_time.in_time_zone(time_zone)

  # only if day_start != 0 for performance
  time -= day_start.seconds if day_start != 0

  time =
    case period
    when :second
      time.change(usec: 0)
    when :minute
      time.change(sec: 0)
    when :hour
      time.change(min: 0)
    when :day
      time.beginning_of_day
    when :week
      # same logic as MySQL group
      weekday = (time.wday - 1) % 7
      (time - ((7 - week_start + weekday) % 7).days).midnight
    when :month
      time.beginning_of_month
    when :quarter
      time.beginning_of_quarter
    when :year
      time.beginning_of_year
    when :hour_of_day
      time.hour
    when :minute_of_hour
      time.min
    when :day_of_week
      (time.wday - 1 - week_start) % 7
    when :day_of_month
      time.day
    when :month_of_year
      time.month
    else
      raise Groupdate::Error, "Invalid period"
    end

  # only if day_start != 0 for performance
  time += day_start.seconds if day_start != 0 && time.is_a?(Time)

  time
end

#time_range ⇒ Object 



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# File 'lib/groupdate/series_builder.rb', line 92

def time_range
  @time_range ||= begin
    time_range = options[:range]
    if time_range.is_a?(Range) && time_range.first.is_a?(Date)
      # convert range of dates to range of times
      # use parsing instead of in_time_zone due to Rails < 4
      last = time_zone.parse(time_range.last.to_s)
      last += 1.day unless time_range.exclude_end?
      time_range = Range.new(time_zone.parse(time_range.first.to_s), last, true)
    elsif !time_range && options[:last]
      if period == :quarter
        step = 3.months
      elsif 1.respond_to?(period)
        step = 1.send(period)
      else
        raise ArgumentError, "Cannot use last option with #{period}"
      end
      if step
        # loop instead of multiply to change start_at - see #151
        start_at = now
        (options[:last].to_i - 1).times do
          start_at -= step
        end

        time_range =
          if options[:current] == false
            round_time(start_at - step)...round_time(now)
          else
            round_time(start_at)..now
          end
      end
    end
    time_range
  end
end