Class: Jekyll::RemoteAsset::Generator

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

Constant Summary collapse

REQUEST_TOKEN_URL = 
"https://api.dropbox.com/1/oauth/request_token"
ACCESS_TOKEN_URL = 
"https://api.dropbox.com/1/oauth/access_token"
FILES_PUT_URL = 
"https://api-content.dropbox.com/1/files_put/auto"
FILE_METADATA_URL = 
"https://api.dropbox.com/1/metadata/auto"
SHARES_URL = 
"https://api.dropbox.com/1/shares/auto"

Instance Method Summary collapse

Instance Method Details

#build_oauth1_header(app_key, app_secret, token = nil, token_secret = nil) ⇒ Object 



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# File 'lib/jekyll_remote_assets.rb', line 95

def build_oauth1_header(app_key, app_secret, token=nil, token_secret=nil)
  header_params = {
    oauth_version: "1.0",
    oauth_consumer_key: app_key,
    oauth_signature_method: "PLAINTEXT",
    oauth_token: token,
    oauth_signature: "#{ app_secret }&#{ token_secret }"
  }

  result = header_params.map do |k, v|
    "#{ k }=\"#{ v }\"" if v
  end

  return "OAuth #{ result.compact.join ', ' }"
end

#config_oauth(plugin_config) ⇒ Object 



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# File 'lib/jekyll_remote_assets.rb', line 36

def config_oauth(plugin_config)
  @oauth_config = {}
  config_file = plugin_config["config"] || __dir__ + "/.remote_assets_config"
  if not File.exist?(config_file)
    puts "1. Create a new application on the Dropbox App Console, if you haven't already: https://www.dropbox.com/developers/apps"
    $stdin.gets

    puts "2. Please enter your app key. "
    @oauth_config[:app_key] = $stdin.gets.strip

    puts "3. Please enter your app secret. "
    @oauth_config[:app_secret] = $stdin.gets.strip

    response = Unirest.post REQUEST_TOKEN_URL,
      headers: { "Authorization" => build_oauth1_header(@oauth_config[:app_key], @oauth_config[:app_secret]) }

    request_tokens = CGI::parse(response.body)

    puts "4. Visit https://www.dropbox.com/1/oauth/authorize?oauth_token=#{ request_tokens['oauth_token'][0] } and approve this app. Press enter when finished."
    $stdin.gets

    response = Unirest.post ACCESS_TOKEN_URL,
      headers: {"Authorization" => build_oauth1_header(@oauth_config[:app_key], @oauth_config[:app_secret], request_tokens['oauth_token'][0], request_tokens['oauth_token_secret'][0]) }

    access_tokens = CGI::parse(response.body)

    @oauth_config[:access_token] = access_tokens['oauth_token'][0]
    @oauth_config[:access_token_secret] =  access_tokens['oauth_token_secret'][0]

    File.open(config_file, 'w+') do |f|
      YAML.dump(@oauth_config, f)
    end
  else
    File.open(config_file) do |f|
      @oauth_config = YAML.load_file(f)
    end
  end
end

#generate(site) ⇒ Object 



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# File 'lib/jekyll_remote_assets.rb', line 111

def generate(site)
  plugin_config = site.config["remote_assets"] || {}
  config_oauth(plugin_config)
  init_cache(plugin_config)

  file_set = Set.new

  Dir.glob("_assets/**/*") do |filename|
    begin
      next if File.directory?(filename)

      name = filename[filename.index('/')..-1]
      overwrite = plugin_config['overwrite'] || true

      File.open(filename) do |f|
        file_set.add filename

        md5 = Digest::MD5.file(filename).hexdigest
        if @cache[filename] and @cache[filename][:md5] == md5
          # if it's cached, make sure the file is still in the Dropbox drive
          response = Unirest.get FILE_METADATA_URL + name,
            headers: {"Authorization" => build_oauth1_header(@oauth_config[:app_key], @oauth_config[:app_secret], @oauth_config[:access_token], @oauth_config[:access_token_secret])}

          if response.body["error"] == nil && !response.body["is_deleted"]
            site.remote_assets[name[1..name.length]] = @cache[filename][:url]
            next
          end
        end

        # upload the file
        response = Unirest.put FILES_PUT_URL + name + "?overwrite=#{ overwrite }",
          headers: {"Authorization" => build_oauth1_header(@oauth_config[:app_key], @oauth_config[:app_secret], @oauth_config[:access_token], @oauth_config[:access_token_secret]),
                    "Content-Length" => File::size(f),
                    "Content-Type" => "text/plain"},
          parameters: f

        # retrieve the url
        response = Unirest.post SHARES_URL + name,
          headers: {"Authorization" => build_oauth1_header(@oauth_config[:app_key], @oauth_config[:app_secret], @oauth_config[:access_token], @oauth_config[:access_token_secret])},
          parameters: {short_url: false}

        uri = URI(response.body["url"])
        site.remote_assets[name[1..-1]] =  "http://dl.dropboxusercontent.com#{ uri.path }"
        
        @cache[filename] = { md5: md5, url: "http://dl.dropboxusercontent.com#{ uri.path }"}
      end
    rescue
      puts "Error uploading #{ filename }"
    end
  end
  @cache.delete_if { |key, value| not file_set.include? key }

  # TODO: clean up file saving
  File.open(plugin_config["cache"] || __dir__ + "/.remote_assets_cache", 'w+') do |f|
    YAML.dump(@cache, f)
  end
end

#init_cache(plugin_config) ⇒ Object 



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# File 'lib/jekyll_remote_assets.rb', line 75

def init_cache(plugin_config)
  @cache = {}
  cache_file = plugin_config["cache"] || __dir__ + "/.remote_assets_cache"

  # TODO: fix first-time set up of cache
  if not File.exist?(cache_file)
    File.open(cache_file, 'w+') do |f|
      YAML.dump(@cache, f)
    end
  end

  File.open(cache_file) do |f|
    @cache = YAML.load_file(f)
  end
end

#nonce(size = 7) ⇒ Object 



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# File 'lib/jekyll_remote_assets.rb', line 91

def nonce(size = 7)
  Base64.encode64(OpenSSL::Random.random_bytes(size)).gsub(/\W/, '')
end