Class: Alexandria::BookProviders::DoubanProvider

Inherits:
GenericProvider show all
Includes:
Logging
Defined in:
lib/alexandria/book_providers/douban.rb

Constant Summary collapse

SITE = 
'http://www.douban.com'
BASE_URL = 
'http://api.douban.com/book/subjects?q=%s&max-results=5&alt=json'

Instance Attribute Summary

Attributes inherited from AbstractProvider

#fullname, #name, #prefs

Instance Method Summary collapse

Methods included from Logging

included, #log

Methods inherited from AbstractProvider

#<=>, abstract?, #abstract?, #action_name, #enabled, #reinitialize, #remove, #toggle_enabled, #transport, unabstract, #variable_name

Constructor Details

#initialize ⇒ DoubanProvider

Returns a new instance of DoubanProvider.



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# File 'lib/alexandria/book_providers/douban.rb', line 40

def initialize
  super('Douban', 'Douban (China)')
  prefs.read
end

Instance Method Details

#parse_search_result(response) ⇒ Object 



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# File 'lib/alexandria/book_providers/douban.rb', line 86

def parse_search_result(response)
  book_search_results = []
  begin
    # dbresult = JSON.parse(response)
    dbresult = YAML.safe_load(json2yaml(response))
    # File.open(",douban.yaml", "wb") {|f| f.write(json2yaml(response)) }
    if dbresult['opensearch:totalResults']['$t'].to_i > 0
      for item in dbresult['entry']
        name = item['title']['$t']
        isbn = nil
        publisher = nil
        pubdate = nil
        binding = nil
        for av in item['db:attribute']
          isbn = av['$t'] if av['@name'] == 'isbn13'
          publisher = av['$t'] if av['@name'] == 'publisher'
          pubdate = av['$t'] if av['@name'] == 'pubdate'
          binding = av['$t'] if av['@name'] == 'binding'
        end
        authors = if item['author']
                    item['author'].map { |a| a['name']['$t'] }
                  else
                    []
                  end
        image_url = nil
        for av in item['link']
          image_url = av['@href'] if av['@rel'] == 'image'
        end
        book = Book.new(name, authors, isbn, publisher, pubdate, binding)
        book_search_results << [book, image_url]
      end
    end
  rescue => ex
    log.warn(ex.backtrace.join('\n'))
  end
  book_search_results
end

#search(criterion, type) ⇒ Object

Raises:



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# File 'lib/alexandria/book_providers/douban.rb', line 49

def search(criterion, type)
  keyword = criterion
  request_url = BASE_URL % CGI.escape(keyword)

  search_response = transport.get_response(URI.parse(request_url))

  results = parse_search_result(search_response.body)
  raise NoResultsError if results.empty?

  if type == SEARCH_BY_ISBN
    return results.first
  else
    return results
  end
end

#url(_book) ⇒ Object 



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# File 'lib/alexandria/book_providers/douban.rb', line 45

def url(_book)
  nil
end