Module: Commonmeta::Readers::JsonFeedReader

Included in:
CLI, MetadataUtils
Defined in:
lib/commonmeta/readers/json_feed_reader.rb

Instance Method Summary collapse

Instance Method Details

#get_doi_prefix_by_blog_id(blog_id) ⇒ Object 



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# File 'lib/commonmeta/readers/json_feed_reader.rb', line 157

def get_doi_prefix_by_blog_id(blog_id)
  # for generating a random DOI.

  url = json_feed_by_blog_url(blog_id)
  response = HTTP.get(url)
  return nil unless response.status.success?

  post = JSON.parse(response.body.to_s)
  post.to_h.dig("prefix")
end

#get_doi_prefix_by_json_feed_item_id(id) ⇒ Object 



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# File 'lib/commonmeta/readers/json_feed_reader.rb', line 168

def get_doi_prefix_by_json_feed_item_id(id)
  # for generating a random DOI. Prefix is based on the blog id.

  url = json_feed_item_by_id_url(id)
  response = HTTP.get(url)
  return nil unless response.status.success?

  post = JSON.parse(response.body.to_s)
  post.to_h.dig("blog", "prefix")
end

#get_json_feed_by_blog(blog_id) ⇒ Object 



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# File 'lib/commonmeta/readers/json_feed_reader.rb', line 146

def get_json_feed_by_blog(blog_id)
  # get all JSON Feed items from a particular blog

  url = json_feed_by_blog_url(blog_id)
  response = HTTP.get(url)
  return { "string" => nil, "state" => "not_found" } unless response.status.success?

  blog = JSON.parse(response.body.to_s)
  blog["items"].map { |item| item["id"] }.first
end

#get_json_feed_item(id: nil, **options) ⇒ Object 



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# File 'lib/commonmeta/readers/json_feed_reader.rb', line 7

def get_json_feed_item(id: nil, **options)
  return { "string" => nil, "state" => "not_found" } unless id.present?

  url = normalize_id(id)
  response = HTTP.get(url)
  return { "string" => nil, "state" => "not_found" } unless response.status.success?

  { "string" => response.body.to_s }
end

#get_json_feed_not_indexed ⇒ Object 



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# File 'lib/commonmeta/readers/json_feed_reader.rb', line 135

def get_json_feed_not_indexed
  # get JSON Feed items not indexed in Crossref since they have been last updated

  url = json_feed_not_indexed_url
  response = HTTP.get(url)
  return { "string" => nil, "state" => "not_found" } unless response.status.success?

  posts = JSON.parse(response.body.to_s)
  posts.map { |post| post["id"] }.first
end

#get_json_feed_unregistered ⇒ Object 



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# File 'lib/commonmeta/readers/json_feed_reader.rb', line 124

def get_json_feed_unregistered
  # get JSON Feed items not registered as DOIs

  url = json_feed_unregistered_url
  response = HTTP.get(url)
  return { "string" => nil, "state" => "not_found" } unless response.status.success?

  posts = JSON.parse(response.body.to_s)
  posts.map { |post| post["id"] }.first
end

#get_references(meta) ⇒ Object 



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# File 'lib/commonmeta/readers/json_feed_reader.rb', line 86

def get_references(meta)
  # check that references resolve
  Array.wrap(meta["reference"]).reduce([]) do |sum, reference|
    begin
      if reference["doi"] && validate_doi(reference["doi"])
        response = HTTP.follow
                  .headers(:accept => "application/vnd.citationstyles.csl+json")
                  .get(reference["doi"])
        csl = JSON.parse(response.body.to_s)
        sum << reference.merge("title" => csl['title'], "publicationYear" => csl.dig("issued", "date-parts", 0, 0).to_s) if [200, 301, 302].include? response.status
      elsif reference["url"] && validate_url(reference["url"]) == "URL"
        sum << reference if [200, 301, 302].include? HTTP.head(reference["url"]).status
      end
    rescue => error
      # puts "Error: #{error.message}"
      # puts "Error: #{reference}"
    end

    sum
  end
end

#get_related_identifiers(meta) ⇒ Object 



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# File 'lib/commonmeta/readers/json_feed_reader.rb', line 108

def get_related_identifiers(meta)
  # check that relationships resolve
  Array.wrap(meta["relationships"]).reduce([]) do |sum, relationship|
    begin
      if [200, 301, 302].include? HTTP.head(relationship["url"]).status
        sum << { "id" => relationship["url"], "type" => relationship["type"] }
      end
    rescue => error
      # puts "Error: #{error.message}"
      # puts "Error: #{reference}"
    end

    sum
  end
end

#read_json_feed_item(string: nil, **options) ⇒ Object 



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# File 'lib/commonmeta/readers/json_feed_reader.rb', line 17

def read_json_feed_item(string: nil, **options)
  read_options = ActiveSupport::HashWithIndifferentAccess.new(options.except(:doi, :id, :url,
                                                                             :sandbox, :validate, :ra))

  meta = string.present? ? JSON.parse(string) : {}

  url = normalize_url(meta.fetch("url", nil))
  id = options[:doi] ? normalize_doi(options[:doi]) : normalize_id(meta.fetch("doi", nil))
  id = url if id.blank? && url.present?

  type = "Article"
  creators = if meta.fetch("authors", nil).present?
      get_authors(from_json_feed(Array.wrap(meta.fetch("authors"))))
    else
      [{ "type" => "Organization", "name" => ":(unav)" }]
    end
  titles = [{ "title" => meta.fetch("title", nil) }]
  publisher = { "name" => meta.dig("blog", "title") }

  date = {}
  date["published"] = get_date_from_unix_timestamp(meta.dig("published_at")) if meta.dig("published_at").present?
  date["updated"] = get_date_from_unix_timestamp(meta.dig("updated_at")) if meta.dig("updated_at").present?

  license = if meta.dig("blog", "license").present?
      hsh_to_spdx("rightsURI" => meta.dig("blog", "license"))
    end
  home_page_url = normalize_url(meta.dig("blog", "home_page_url"))
  container = if meta.dig("blog", "title").present?
      { "type" => "Periodical",
        "title" => meta.dig("blog", "title"),
        "identifier" => home_page_url,
        "identifierType" => "URL" }
    end

  descriptions = if meta.fetch("summary", nil).present?
      [{ "description" => sanitize(meta.fetch("summary", nil)),
         "descriptionType" => "Abstract" }]
    else
      []
    end
  language = meta.fetch("language", nil) || meta.dig("blog", "language")
  state = id.present? || read_options.present? ? "findable" : "not_found"
  subjects = Array.wrap(meta.dig("blog", "category")).reduce([]) do |sum, subject|
    sum += name_to_fos(subject.underscore.humanize)

    sum
  end
  references = get_references(meta)
  related_identifiers = get_related_identifiers(meta)
  alternate_identifiers = [{ "alternateIdentifier" => meta["id"], "alternateIdentifierType" => "UUID" }]

  { "id" => id,
    "type" => type,
    "url" => url,
    "titles" => titles,
    "creators" => creators,
    "publisher" => publisher,
    "container" => container,
    "date" => date,
    "language" => language,
    "descriptions" => descriptions,
    "license" => license,
    "subjects" => subjects.presence,
    "references" => references.presence,
    "related_identifiers" => related_identifiers.presence,
    "alternate_identifiers" => alternate_identifiers,
    "state" => state }.compact.merge(read_options)
end