35 lines
		
	
	
	
		
			809 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			35 lines
		
	
	
	
		
			809 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| # frozen_string_literal: true
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| 
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| module JsonLdHelper
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|   def equals_or_includes?(haystack, needle)
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|     haystack.is_a?(Array) ? haystack.include?(needle) : haystack == needle
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|   end
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| 
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|   def first_of_value(value)
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|     value.is_a?(Array) ? value.first : value
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|   end
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| 
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|   def supported_context?(json)
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|     equals_or_includes?(json['@context'], ActivityPub::TagManager::CONTEXT)
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|   end
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| 
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|   def fetch_resource(uri)
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|     response = build_request(uri).perform
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|     return if response.code != 200
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|     body_to_json(response.to_s)
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|   end
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| 
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|   def body_to_json(body)
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|     body.nil? ? nil : Oj.load(body, mode: :strict)
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|   rescue Oj::ParseError
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|     nil
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|   end
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| 
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|   private
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| 
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|   def build_request(uri)
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|     request = Request.new(:get, uri)
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|     request.add_headers('Accept' => 'application/activity+json, application/ld+json')
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|     request
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|   end
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| end
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