71 lines
2 KiB
Ruby
71 lines
2 KiB
Ruby
class ProcessInteractionService
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include ApplicationHelper
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def call(envelope, target_account)
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body = salmon.unpack(envelope)
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xml = Nokogiri::XML(body)
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return unless involves_target_account?(xml, target_account) && contains_author?(xml)
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username = xml.at_xpath('/xmlns:entry/xmlns:author/xmlns:name').content
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url = xml.at_xpath('/xmlns:entry/xmlns:author/xmlns:uri').content
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domain = Addressable::URI.parse(url).host
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account = Account.find_by(username: username, domain: domain)
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if account.nil?
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account = follow_remote_account_service.("acct:#{username}@#{domain}")
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return if account.nil?
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end
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if salmon.verify(envelope, account.keypair)
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case get_verb(xml)
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when :follow
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account.follow!(target_account)
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when :unfollow
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account.unfollow!(target_account)
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when :favorite
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# todo: a favourite
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when :post
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# todo: a reply
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when :share
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# todo: a reblog
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end
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end
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end
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private
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def contains_author?(xml)
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!(xml.at_xpath('/xmlns:entry/xmlns:author/xmlns:name').nil? || xml.at_xpath('/xmlns:entry/xmlns:author/xmlns:uri').nil?)
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end
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def involves_target_account?(xml, account)
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targeted_at_account?(xml, account) || mentions_account?(xml, account)
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end
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def targeted_at_account?(xml, account)
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target_id = xml.at_xpath('/xmlns:entry/activity:object/xmlns:id')
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!target_id.nil? && target_id.content == profile_url(name: account.username)
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end
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def mentions_account?(xml, account)
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xml.xpath('/xmlns:entry/xmlns:link[@rel="mentioned"]').each do |mention_link|
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return true if mention_link.attribute('ref') == profile_url(name: account.username)
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end
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false
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end
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def get_verb(xml)
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verb = xml.at_xpath('//activity:verb').content.gsub 'http://activitystrea.ms/schema/1.0/', ''
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verb.to_sym
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end
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def salmon
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OStatus2::Salmon.new
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end
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def follow_remote_account_service
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FollowRemoteAccountService.new
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end
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end
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