Class: Zhong::Every

Inherits:
Object
  • Object
show all
Defined in:
lib/zhong/every.rb

Defined Under Namespace

Classes: FailedToParse

Constant Summary collapse

EVERY_KEYWORDS = 
{
  minute: 1.minute,
  hour: 1.hour,
  day: 1.day,
  week: 1.week,
  month: 1.month,
  year: 1.year,
  decade: 10.years
}.freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(period) ⇒ Every

Returns a new instance of Every.



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# File 'lib/zhong/every.rb', line 15

def initialize(period)
  @period = period

  raise "`every` must be >= 1 second" unless valid?
end

Class Method Details

.parse(every) ⇒ Object 



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# File 'lib/zhong/every.rb', line 42

def self.parse(every)
  case every
  when Numeric, ActiveSupport::Duration
    new(every)
  when String, Symbol
    key = every.downcase.to_sym

    raise FailedToParse, every unless EVERY_KEYWORDS.key?(key)

    new(EVERY_KEYWORDS[key])
  else
    raise FailedToParse, every
  end
end

Instance Method Details

#next_at(last = Time.now) ⇒ Object 



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# File 'lib/zhong/every.rb', line 38

def next_at(last = Time.now)
  last + @period
end

#to_s ⇒ Object 



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# File 'lib/zhong/every.rb', line 21

def to_s
  EVERY_KEYWORDS.to_a.reverse.each do |friendly, period|
    next unless @period % period == 0

    rem = @period / period

    return "#{rem} #{friendly}" if rem == 1
    return "#{rem} #{friendly}s"
  end

  "#{@period.to_i} second#{@period.to_i == 1 ? '' : 's'}"
end