Module: WorkingHours::Computation

Included in:
WorkingHours
Defined in:
lib/working_hours/computation.rb

Instance Method Summary collapse

Instance Method Details

#add_days(origin, days, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 7

def add_days origin, days, config: nil
  return origin if days.zero?

  config ||= wh_config
  time = in_config_zone(origin, config: config)
  time += (days <=> 0).day until working_day?(time, config: config)

  while days > 0
    time += 1.day
    days -= 1 if working_day?(time, config: config)
  end
  while days < 0
    time -= 1.day
    days += 1 if working_day?(time, config: config)
  end
  convert_to_original_format time, origin
end

#add_hours(origin, hours, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 25

def add_hours origin, hours, config: nil
  config ||= wh_config
  add_minutes origin, hours * 60, config: config
end

#add_minutes(origin, minutes, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 30

def add_minutes origin, minutes, config: nil
  config ||= wh_config
  add_seconds origin, minutes * 60, config: config
end

#add_seconds(origin, seconds, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 35

def add_seconds origin, seconds, config: nil
  config ||= wh_config
  time = in_config_zone(origin, config: config)
  while seconds > 0
    # roll to next business period
    time = advance_to_working_time(time, config: config)
    # look at working ranges
    time_in_day = time.seconds_since_midnight
    config[:working_hours][time.wday].each do |from, to|
      if time_in_day >= from and time_in_day < to
        # take all we can
        take = [to - time_in_day, seconds].min
        # advance time
        time += take
        # decrease seconds
        seconds -= take
      end
    end
  end
  while seconds < 0
    # roll to previous business period
    time = return_to_exact_working_time(time, config: config)
    # look at working ranges
    time_in_day = time.seconds_since_midnight
    config[:working_hours][time.wday].reverse_each do |from, to|
      if time_in_day > from and time_in_day <= to
        # take all we can
        take = [time_in_day - from, -seconds].min
        # advance time
        time -= take
        # decrease seconds
        seconds += take
      end
    end
  end
  convert_to_original_format(time.round, origin)
end

#advance_to_closing_time(time, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 92

def advance_to_closing_time time, config: nil
  config ||= wh_config
  time = in_config_zone(time, config: config)
  loop do
    # skip holidays and weekends
    while not working_day?(time, config: config)
      time = (time + 1.day).beginning_of_day
    end
    # find next working range after time
    time_in_day = time.seconds_since_midnight
    time = time.beginning_of_day
    config[:working_hours][time.wday].each do |from, to|
      return time + to if time_in_day >= from and time_in_day < to
      return time + to if from >= time_in_day
    end
    # if none is found, go to next day and loop
    time = time + 1.day
  end
end

#advance_to_working_time(time, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 73

def advance_to_working_time time, config: nil
  config ||= wh_config
  time = in_config_zone(time, config: config)
  loop do
    # skip holidays and weekends
    while not working_day?(time, config: config)
      time = (time + 1.day).beginning_of_day
    end
    # find first working range after time
    time_in_day = time.seconds_since_midnight
    config[:working_hours][time.wday].each do |from, to|
      return time if time_in_day >= from and time_in_day < to
      return time + (from - time_in_day) if from >= time_in_day
    end
    # if none is found, go to next day and loop
    time = (time + 1.day).beginning_of_day
  end
end

#in_working_hours?(time, config: nil) ⇒ Boolean 



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# File 'lib/working_hours/computation.rb', line 150

def in_working_hours? time, config: nil
  config ||= wh_config
  time = in_config_zone(time, config: config)
  return false if not working_day?(time, config: config)
  time_in_day = time.seconds_since_midnight
  config[:working_hours][time.wday].each do |from, to|
    return true if time_in_day >= from and time_in_day < to
  end
  false
end

#next_working_time(time, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 112

def next_working_time(time, config: nil)
  time = advance_to_closing_time(time, config: config) if in_working_hours?(time, config: config)
  advance_to_working_time(time, config: config)
end

#return_to_exact_working_time(time, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 124

def return_to_exact_working_time time, config: nil
  config ||= wh_config
  time = in_config_zone(time, config: config)
  loop do
    # skip holidays and weekends
    while not working_day?(time, config: config)
      time = (time - 1.day).end_of_day
    end
    # find last working range before time
    time_in_day = time.seconds_since_midnight
    config[:working_hours][time.wday].reverse_each do |from, to|
      # round is used to suppress miliseconds hack from `end_of_day`
      return time if time_in_day > from and time_in_day <= to
      return (time - (time_in_day - to)) if to <= time_in_day
    end
    # if none is found, go to previous day and loop
    time = (time - 1.day).end_of_day
  end
end

#return_to_working_time(time, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 117

def return_to_working_time(time, config: nil)
  # return_to_exact_working_time may return values with a high number of milliseconds,
  # this is necessary for the end of day hack, here we return a rounded value for the
  # public API
  return_to_exact_working_time(time, config: config).round
end

#working_day?(time, config: nil) ⇒ Boolean 



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# File 'lib/working_hours/computation.rb', line 144

def working_day? time, config: nil
  config ||= wh_config
  time = in_config_zone(time, config: config)
  config[:working_hours][time.wday].present? and not config[:holidays].include?(time.to_date)
end

#working_days_between(from, to, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 161

def working_days_between from, to, config: nil
  config ||= wh_config
  if to < from
    -working_days_between(to, from, config: config)
  else
    from = in_config_zone(from, config: config)
    to = in_config_zone(to, config: config)
    days = 0
    while from.to_date < to.to_date
      from += 1.day
      days += 1 if working_day?(from, config: config)
    end
    days
  end
end

#working_time_between(from, to, config: nil) ⇒ Object 



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# File 'lib/working_hours/computation.rb', line 177

def working_time_between from, to, config: nil
  config ||= wh_config
  if to < from
    -working_time_between(to, from, config: config)
  else
    from = advance_to_working_time(in_config_zone(from, config: config))
    to = in_config_zone(to, config: config)
    distance = 0
    while from < to
      # look at working ranges
      time_in_day = from.seconds_since_midnight
      config[:working_hours][from.wday].each do |begins, ends|
        if time_in_day >= begins and time_in_day < ends
          # take all we can
          take = [ends - time_in_day, to - from].min
          # advance time
          from += take
          # increase counter
          distance += take
        end
      end
      # roll to next business period
      from = advance_to_working_time(from, config: config)
    end
    distance.round # round up to supress miliseconds introduced by 24:00 hack
  end
end