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# frozen_string_literal: true
class Trends::PreviewCardFilter
KEYS = %i(
trending
locale
).freeze
attr_reader :params
def initialize(params)
@params = params
end
def results
scope = PreviewCard.unscoped
params.each do |key, value|
next if %w(page locale).include?(key.to_s)
scope.merge!(scope_for(key, value.to_s.strip)) if value.present?
end
scope
end
private
def scope_for(key, value)
case key.to_s
when 'trending'
trending_scope(value)
else
raise "Unknown filter: #{key}"
end
end
def trending_scope(value)
scope = Trends.links.query
scope = scope.in_locale(@params[:locale].to_s) if @params[:locale].present?
scope = scope.allowed if value == 'allowed'
scope.to_arel
end
end
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