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# frozen_string_literal: true
class FetchLinkCardService < BaseService
def call(status)
# Get first URL
url = URI.extract(status.text).reject { |uri| (uri =~ /\Ahttps?:\/\//).nil? }.first
return if url.nil?
response = http_client.get(url)
return if response.code != 200
page = Nokogiri::HTML(response.to_s)
card = PreviewCard.where(status: status).first_or_initialize(status: status, url: url)
card.title = meta_property(page, 'og:title') || page.at_xpath('//title')&.content
card.description = meta_property(page, 'og:description') || meta_property(page, 'description')
card.image = URI.parse(meta_property(page, 'og:image')) if meta_property(page, 'og:image')
card.save_with_optional_image!
end
private
def http_client
HTTP.timeout(:per_operation, write: 10, connect: 10, read: 10).follow
end
def meta_property(html, property)
html.at_xpath("//meta[@property=\"#{property}\"]")&.attribute('content')&.value || html.at_xpath("//meta[@name=\"#{property}\"]")&.attribute('content')&.value
end
end
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