mastodon/app/services/fetch_link_card_service.rb
Eugen Rochko 999cde94a6 Instead of using spoiler boolean and spoiler_text, simply check for non-blank spoiler_text
Federate spoiler_text using warning attribute on <content /> instead of a <category term="spoiler" />
Clean up schema file from accidental development migrations
2017-01-25 01:29:16 +01:00

35 lines
1.1 KiB
Ruby

# 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 || response.mime_type != 'text/html'
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')
return if card.title.blank?
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