Module: Skroutz::Parsing

Included in:
Client, CollectionProxy
Defined in:
lib/skroutz/parsing.rb

Instance Method Summary collapse

Instance Method Details

#collection?(json) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skroutz/parsing.rb', line 55

def collection?(json)
  json[(json.keys - ['meta']).first].is_a?(Array)
end

#collection_resource_key(json) ⇒ Object 



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# File 'lib/skroutz/parsing.rb', line 43

def collection_resource_key(json)
  (json.keys - ['meta']).first.singularize
end

#infer_collection(json) ⇒ Object 



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# File 'lib/skroutz/parsing.rb', line 51

def infer_collection(json)
  "Skroutz::#{collection_resource_key(json).classify}".safe_constantize
end

#infer_model(json) ⇒ Object 



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# File 'lib/skroutz/parsing.rb', line 47

def infer_model(json)
  "Skroutz::#{resource_key(json).capitalize}".safe_constantize
end

#link_header(response) ⇒ Object 



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# File 'lib/skroutz/parsing.rb', line 30

def link_header(response)
  response.headers.fetch('link', '').split(',').reduce({}) do |h, link|
    page, type = link.scan(/\<(.*)\>; rel="(.*)"/).flatten
    h[type.to_sym] = page

    h
  end
end

#parse(response) ⇒ Object 



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# File 'lib/skroutz/parsing.rb', line 2

def parse(response)
  json = JSON.parse(response.body)

  if collection?(json)
    Skroutz::PaginatedCollection.new(self, response, parse_collection(json))
  else
    parse_resource(json)
  end
rescue JSON::ParserError
  raise Skroutz::InvalidResource.new(model_name.to_s, response.body)
end

#parse_collection(json) ⇒ Object 



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# File 'lib/skroutz/parsing.rb', line 18

def parse_collection(json)
  model_name = infer_collection(json)

  json[collection_resource_key(json).pluralize].map do |resource|
    model_name.new(resource, client)
  end
end

#parse_meta(response) ⇒ Object 



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# File 'lib/skroutz/parsing.rb', line 26

def parse_meta(response)
  HashWithIndifferentAccess.new(JSON.parse(response.body).fetch('meta', {}))
end

#parse_resource(json) ⇒ Object 



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# File 'lib/skroutz/parsing.rb', line 14

def parse_resource(json)
  infer_model(json).new(json[resource_key(json)], client)
end

#resource_key(json) ⇒ Object 



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# File 'lib/skroutz/parsing.rb', line 39

def resource_key(json)
  json.keys.first
end