Class: Metapage::Metadata

Inherits:
Object
  • Object
show all
Defined in:
lib/metapage.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url) ⇒ Metadata

Returns a new instance of Metadata.



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# File 'lib/metapage.rb', line 48

def initialize(url)
  @url = url
  title
end

Instance Attribute Details

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/metapage.rb', line 47

def url
  @url
end

Instance Method Details

#canonical_url ⇒ Object 



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# File 'lib/metapage.rb', line 89

def canonical_url
  if image?
    url
  else
    @canonical_url ||= metatag_content('og:url') || link_rel('canonical') || url
  end
end

#content_type ⇒ Object 



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# File 'lib/metapage.rb', line 113

def content_type
  mimemagic and mimemagic.type
end

#description ⇒ Object 



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# File 'lib/metapage.rb', line 66

def description
  unless image?
    @description ||= metatag_content('og:description') || metatag_content('description')
  end
end

#id ⇒ Object 



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# File 'lib/metapage.rb', line 97

def id
  if canonical_url
    @id ||= Digest::SHA1.hexdigest(canonical_url)
  end
end

#image_url ⇒ Object 



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# File 'lib/metapage.rb', line 72

def image_url
  if image?
    url
  else
    # Fallback to apple-touch-icon, fluid-icon, ms-tileicon etc
    @image_url ||= metatag_content('og:image:secure_url') || metatag_content('og:image') || link_rel('apple-touch-icon-precomposed')
  end
end

#media_type ⇒ Object 



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# File 'lib/metapage.rb', line 109

def media_type
  mimemagic and mimemagic.mediatype
end

#site_name ⇒ Object 



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# File 'lib/metapage.rb', line 103

def site_name
  unless image?
    @site_name ||= metatag_content('og:site_name') || host
  end
end

#title ⇒ Object 



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# File 'lib/metapage.rb', line 53

def title
  unless image?
    @title ||= (metatag_content('og:title') || html_content('title')).tap do |title|
      if title
        checked_title = title.downcase.gsub(' ', '')
        if IGNORE_LIST.any? {|word| checked_title.include? word }
          raise IgnoredTitleError
        end
      end
    end
  end
end

#to_h ⇒ Object 



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# File 'lib/metapage.rb', line 117

def to_h
  {
    id: id,
    title: title,
    description: description,
    image_url: image_url,
    type: type,
    canonical_url: canonical_url,
    site_name: site_name,
    media_type: media_type,
    content_type: content_type
  }
end

#to_json ⇒ Object 



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# File 'lib/metapage.rb', line 131

def to_json
  to_h.to_json
end

#type ⇒ Object 



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# File 'lib/metapage.rb', line 81

def type
  if image?
    'image'
  else
    @type ||= metatag_content('og:type') || 'website'
  end
end