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# frozen_string_literal: true
class ProviderDiscovery < OEmbed::ProviderDiscovery
class << self
def get(url, **options)
provider = discover_provider(url, options)
options.delete(:html)
provider.get(url, options)
end
def discover_provider(url, **options)
format = options[:format]
if options[:html]
html = Nokogiri::HTML(options[:html])
else
res = Request.new(:get, url).perform
raise OEmbed::NotFound, url if res.code != 200 || res.mime_type != 'text/html'
html = Nokogiri::HTML(res.to_s)
end
if format.nil? || format == :json
provider_endpoint ||= html.at_xpath('//link[@type="application/json+oembed"]')&.attribute('href')&.value
format ||= :json if provider_endpoint
end
if format.nil? || format == :xml
provider_endpoint ||= html.at_xpath('//link[@type="text/xml+oembed"]')&.attribute('href')&.value
format ||= :xml if provider_endpoint
end
raise OEmbed::NotFound, url if provider_endpoint.nil?
begin
provider_endpoint = Addressable::URI.parse(provider_endpoint)
provider_endpoint.query = nil
provider_endpoint = provider_endpoint.to_s
rescue Addressable::URI::InvalidURIError
raise OEmbed::NotFound, url
end
OEmbed::Provider.new(provider_endpoint, format)
end
end
end
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