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module Ci
class CronParser
def initialize(cron, cron_time_zone = 'UTC')
@cron = cron
@cron_time_zone = cron_time_zone
end
def next_time_from_now
cronLine = try_parse_cron(@cron, @cron_time_zone)
return nil unless cronLine.present?
cronLine.next_time
end
def validation
VALID_SYNTAX_TIME_ZONE = 'Europe/Istanbul'
VALID_SYNTAX_CRON = '* * * * *'
is_valid_cron = try_parse_cron(@cron, VALID_SYNTAX_TIME_ZONE).present?
is_valid_cron_time_zone = try_parse_cron(VALID_SYNTAX_CRON, @cron_time_zone).present?
return is_valid_cron, is_valid_cron_time_zone
end
private
def try_parse_cron(cron, cron_time_zone)
begin
Rufus::Scheduler.parse("#{cron} #{cron_time_zone}")
rescue
nil
end
end
end
end
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