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module IceCube
module Validations::WeeklyInterval
def interval(interval, week_start = :sunday)
@interval = normalized_interval(interval)
@week_start = TimeUtil.wday_to_sym(week_start)
replace_validations_for(:interval, [Validation.new(@interval, week_start)])
clobber_base_validations(:day)
self
end
class Validation
attr_reader :interval, :week_start
def initialize(interval, week_start)
@interval = interval
@week_start = week_start
end
def type
:day
end
def dst_adjust?
true
end
def validate(step_time, start_time)
return if step_time < start_time
t0, t1 = start_time, step_time
d0 = Date.new(t0.year, t0.month, t0.day)
d1 = Date.new(t1.year, t1.month, t1.day)
days = (d1 - TimeUtil.normalize_wday(d1.wday, week_start)) -
(d0 - TimeUtil.normalize_wday(d0.wday, week_start))
offset = ((days.to_i / 7) % interval).nonzero?
(interval - offset) * 7 if offset
end
def build_s(builder)
builder.base = IceCube::I18n.t('ice_cube.each_week', count: interval)
end
def build_hash(builder)
builder[:interval] = interval
builder[:week_start] = TimeUtil.sym_to_wday(week_start)
end
def build_ical(builder)
builder['FREQ'] << 'WEEKLY'
unless interval == 1
builder['INTERVAL'] << interval
builder['WKST'] << week_start.to_s.upcase[0..1]
end
end
end
end
end
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