# frozen_string_literal: false

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require "rss/1.0"

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module RSS

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# The prefix for the Syndication XML namespace.

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SY_PREFIX = 'sy'

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# The URI of the Syndication specification.

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SY_URI = "http://purl.org/rss/1.0/modules/syndication/"

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RDF.install_ns(SY_PREFIX, SY_URI)

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module SyndicationModel

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extend BaseModel

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ELEMENTS = []

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def self.append_features(klass)

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super

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klass.install_must_call_validator(SY_PREFIX, SY_URI)

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klass.module_eval do

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[

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["updatePeriod"],

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["updateFrequency", :positive_integer]

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].each do |name, type|

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install_text_element(name, SY_URI, "?",

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"#{SY_PREFIX}_#{name}", type,

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"#{SY_PREFIX}:#{name}")

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end

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%w(updateBase).each do |name|

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install_date_element(name, SY_URI, "?",

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"#{SY_PREFIX}_#{name}", 'w3cdtf',

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"#{SY_PREFIX}:#{name}")

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end

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end

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klass.module_eval(<<-EOC, __FILE__, __LINE__ + 1)

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alias_method(:_sy_updatePeriod=, :sy_updatePeriod=)

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def sy_updatePeriod=(new_value)

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new_value = new_value.strip

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validate_sy_updatePeriod(new_value) if @do_validate

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self._sy_updatePeriod = new_value

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end

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EOC

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end

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private

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SY_UPDATEPERIOD_AVAILABLE_VALUES = %w(hourly daily weekly monthly yearly)

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def validate_sy_updatePeriod(value) # :nodoc:

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unless SY_UPDATEPERIOD_AVAILABLE_VALUES.include?(value)

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raise NotAvailableValueError.new("updatePeriod", value)

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end

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end

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end

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class RDF

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class Channel; include SyndicationModel; end

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end

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prefix_size = SY_PREFIX.size + 1

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SyndicationModel::ELEMENTS.uniq!

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SyndicationModel::ELEMENTS.each do |full_name|

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name = full_name[prefix_size..-1]

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BaseListener.install_get_text_element(SY_URI, name, full_name)

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end

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end

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