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