Class: Picasa::Picasa

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#picasa_session ⇒ Object

Returns the value of attribute picasa_session.



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# File 'lib/picasa.rb', line 22

def picasa_session
  @picasa_session
end

Class Method Details

.entries(xml_response) ⇒ Object 



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# File 'lib/picasa.rb', line 296

def self.entries(xml_response)
  document = XmlSimple.xml_in(xml_response, { 'ForceArray' => false });
  return [] if (!document['totalResults'].nil? && document['totalResults'].to_i == 0)

  entries = (document['totalResults']).to_i > 1 ? document["entry"] : [document["entry"]]
  return entries.compact
end

.parse_album_entry(album_entry_xml) ⇒ Object 



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# File 'lib/picasa.rb', line 304

def self.parse_album_entry(album_entry_xml)
  #album_hash = XmlSimple.xml_in(album_entry_xml.to_s, { 'ForceArray' => false })
  album_hash = album_entry_xml

  album = Album.new
  album.xml = album_entry_xml.to_s

  album.id = album_hash["id"][1]
  album.name = album_hash["name"]
  album.user = album_hash["user"]
  album.number_of_photos = album_hash["numphotos"]
  album.number_of_comments = album_hash["commentCount"]
  album.is_commentable = album_hash["commentingEnabled"] == true ? true : false
  album.access = album_hash["access"]

  album.author_name = album_hash["author"]["name"]
  album.author_uri = album_hash["author"]["uri"]

  album.title = album_hash["group"]["title"]["content"]
  album.title_type = album_hash["group"]["title"]["type"]
  album.description = album_hash["group"]["description"]["content"]
  album.description_type = album_hash["group"]["description"]["type"]
  album.image_url = album_hash["group"]["content"]["url"]
  album.image_type = album_hash["group"]["content"]["type"]
  album.thumbnail = Thumbnail.new()
  album.thumbnail.url = album_hash["group"]["thumbnail"]["url"]
  album.thumbnail.width = album_hash["group"]["thumbnail"]["width"]
  album.thumbnail.height = album_hash["group"]["thumbnail"]["height"]

  # make self xml url
  links_from_hash = album_hash["link"]
  if(links_from_hash.respond_to?(:each))
    links_from_hash.each do |link|
      if(link["rel"] == "self")
        album.self_xml_url = link["href"]
      elsif(link["rel"] == "edit")
        album.edit_url = link["href"]
      end
    end
  else
    album.self_xml_url = nil
    album.edit_url = nil
  end

  return album
end

.parse_photo_entry(photo_entry_xml) ⇒ Object 



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# File 'lib/picasa.rb', line 351

def self.parse_photo_entry(photo_entry_xml)
  #photo_hash = XmlSimple.xml_in(photo_entry_xml.to_s, { 'ForceArray' => false })
  photo_hash = photo_entry_xml

  photo = Photo.new
  photo.xml = photo_entry_xml.to_s

  photo.id = photo_hash["id"][1]
  photo.album_id = photo_hash["albumid"]
  photo.version_number = photo_hash["version"]
  photo.is_commentable = photo_hash["commentingEnabled"]
  photo.size = photo_hash["size"]
  photo.client = photo_hash["client"]
  photo.title = photo_hash["group"]["title"]["content"]
  photo.description = photo_hash["group"]["description"]["content"]
  photo.url = photo_hash["group"]["content"]["url"]
  photo.width = photo_hash["group"]["content"]["width"]
  photo.height = photo_hash["group"]["content"]["height"]
  photo.type = photo_hash["group"]["content"]["type"]
  photo.medium = photo_hash["group"]["content"]["medium"]

  # make thumbnails
  photo.thumbnails = []
  thumbnails_from_hash = photo_hash["group"]["thumbnail"]
  if(thumbnails_from_hash.respond_to?(:each))
    thumbnails_from_hash.each do |thumb|
      thumbnail = Thumbnail.new
      thumbnail.url = thumb["url"]
      thumbnail.width = thumb["width"]
      thumbnail.height = thumb["height"]

      photo.thumbnails << thumbnail
    end
  else

  end

  # make self xml url
  links_from_hash = photo_hash["link"]
  if(links_from_hash.respond_to?(:each))
    links_from_hash.each do |link|
      if(link["rel"] == "self")
        photo.self_xml_url = link["href"]
      elsif(link["rel"] == "edit")
        photo.edit_url = link["href"]
      end
    end
  else
    photo.self_xml_url = nil
    photo.edit_url = nil
  end

  return photo
end

Instance Method Details

#album(options = {}) ⇒ Object 



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

def album(options = {})

  if(options[:name] == nil)
    return nil
  end

  albums = self.albums(options)
  for album in albums
    if(album.name == options[:name])
      return album
    end
  end

  return nil
end

#albums(options = {}) ⇒ Object 



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# File 'lib/picasa.rb', line 63

def albums(options = {})

  userId = options[:user_id] == nil ? self.picasa_session.user_id : options[:user_id]
  access = options[:access] == nil ? "public" : options[:access]
  url = "http://picasaweb.google.com/data/feed/api/user/#{userId}?kind=album&access=#{access}"

  uri = URI.parse(url)
  http = Net::HTTP.new(uri.host, uri.port)

  headers = {"Authorization" => "GoogleLogin auth=#{self.picasa_session.auth_key}"}

  response, xml_response = http.get(uri.path, headers)

  #xml_response = Net::HTTP.get_response(URI.parse(url)).body.to_s
  albums = create_albums_from_xml(xml_response)

  return albums
end

#create_album(options = {}) ⇒ Object 



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# File 'lib/picasa.rb', line 94

def create_album(options = {})

  title = options[:title].nil? ? "" : options[:title]
  summary = options[:summary].nil? ? "" : options[:summary]
  location = options[:location].nil? ? "" : options[:location]
  access = options[:access].nil? ? "public" : options[:access]
  commentable = options[:commentable].nil? ? "true" : options[:commentable].to_s
  keywords = options[:keywords].nil? ? "" : options[:keywords]
  time_i = (Time.now).to_i * 1000

  createAlbumRequestXml = "<entry xmlns='http://www.w3.org/2005/Atom'
                xmlns:media='http://search.yahoo.com/mrss/'
                xmlns:gphoto='http://schemas.google.com/photos/2007'>
                  <title type='text'>#{title}</title>
                  <summary type='text'>#{summary}</summary>
                  <gphoto:location>#{location}</gphoto:location>
                  <gphoto:access>#{access}</gphoto:access>
                  <gphoto:commentingEnabled>#{commentable}</gphoto:commentingEnabled>
                  <gphoto:timestamp>#{time_i}</gphoto:timestamp>
                  <media:group>
                    <media:keywords>#{keywords}</media:keywords>
                  </media:group>
                  <category scheme='http://schemas.google.com/g/2005#kind'
                    term='http://schemas.google.com/photos/2007#album'></category>
                </entry>"

  url = "http://picasaweb.google.com/data/feed/api/user/#{self.picasa_session.user_id}"

  uri = URI.parse(url)
  http = Net::HTTP.new(uri.host, uri.port)

  headers = {"Content-Type" => "application/atom+xml", "Authorization" => "GoogleLogin auth=#{self.picasa_session.auth_key}"}
  response, data = http.post(uri.path, createAlbumRequestXml, headers)
  data = response.body
  album = create_album_from_xml(data)
  return album
end

#create_album_from_xml(xml_response) ⇒ Object 



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# File 'lib/picasa.rb', line 268

def create_album_from_xml(xml_response)
  album = nil

  #parse the entry xml element and get the album object
  album = Picasa.parse_album_entry(XmlSimple.xml_in(xml_response, { 'ForceArray' => false }))

  #enter session values in album object
  album.picasa_session = PicasaSession.new
  album.picasa_session.auth_key = self.picasa_session.auth_key
  album.picasa_session.user_id = self.picasa_session.user_id

  return album
end

#create_albums_from_xml(xml_response) ⇒ Object 



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# File 'lib/picasa.rb', line 248

def create_albums_from_xml(xml_response)
  albums = []
  #response_hash = XmlSimple.xml_in(xml_response, { 'ForceArray' => false })
  #puts response_hash.inspect

  Picasa.entries(xml_response).each do |entry|
    #parse the entry xml element and get the album object
    album = Picasa.parse_album_entry(entry)

    #enter session values in album object
    album.picasa_session = PicasaSession.new
    album.picasa_session.auth_key = self.picasa_session.auth_key
    album.picasa_session.user_id = self.picasa_session.user_id

    albums << album
  end

  return albums
end

#create_photo_from_xml(xml_response) ⇒ Object 



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# File 'lib/picasa.rb', line 282

def create_photo_from_xml(xml_response)
  photo = nil

  #parse the entry xml element and get the photo object
  photo = Picasa.parse_photo_entry(XmlSimple.xml_in(xml_response, { 'ForceArray' => false }))

  #enter session values in photo object
  photo.picasa_session = PicasaSession.new
  photo.picasa_session.auth_key = self.picasa_session.auth_key
  photo.picasa_session.user_id = self.picasa_session.user_id

  return photo
end

#delete_album(album) ⇒ Object 



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# File 'lib/picasa.rb', line 229

def delete_album(album)
  url = album.edit_url

  uri = URI.parse(url)
  http = Net::HTTP.new(uri.host, uri.port)

  headers = {"Authorization" => "GoogleLogin auth=#{self.picasa_session.auth_key}"}

  response, data = http.delete(uri.path, headers)
  data = response.body

  if(response.code == "200")
    return true
  else
    return false
  end

end

#delete_photo(photo) ⇒ Object 



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# File 'lib/picasa.rb', line 210

def delete_photo(photo)
  url = photo.edit_url

  uri = URI.parse(url)
  http = Net::HTTP.new(uri.host, uri.port)

  headers = {"Authorization" => "GoogleLogin auth=#{self.picasa_session.auth_key}"}

  response, data = http.delete(uri.path, headers)
  data = response.body

  if(response.code == "200")
    return true
  else
    return false
  end

end

#load_album(album_url) ⇒ Object 



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# File 'lib/picasa.rb', line 132

def load_album(album_url)
  uri = URI.parse(album_url)
  http = Net::HTTP.new(uri.host, uri.port)

  headers = {"Authorization" => "GoogleLogin auth=#{self.picasa_session.auth_key}"}

  response, album_entry_xml_response = http.get(uri.path, headers)

  if(response.code == "200")
    #parse the entry xml element and get the photo object
    album = self.create_album_from_xml(album_entry_xml_response)
    return album
  else
    return nil
  end
end

#load_album_with_id(album_id) ⇒ Object 



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# File 'lib/picasa.rb', line 149

def load_album_with_id(album_id)
  album_url = "http://picasaweb.google.com/data/entry/api/user/#{self.picasa_session.user_id}/albumid/#{album_id}"

  return load_album(album_url)
end

#load_photo(photo_url) ⇒ Object 



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# File 'lib/picasa.rb', line 155

def load_photo(photo_url)
  uri = URI.parse(photo_url)
  http = Net::HTTP.new(uri.host, uri.port)

  headers = {"Authorization" => "GoogleLogin auth=#{self.picasa_session.auth_key}"}

  response, photo_entry_xml_response = http.get(uri.path, headers)

  if(response.code == "200")
    #parse the entry xml element and get the photo object
    photo = self.create_photo_from_xml(photo_entry_xml_response)
    return photo
  else
    return nil
  end
end

#load_photo_with_id(photo_id, album_id) ⇒ Object 



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# File 'lib/picasa.rb', line 172

def load_photo_with_id(photo_id, album_id)
  photo_url = "http://picasaweb.google.com/data/entry/api/user/#{self.picasa_session.user_id}/albumid/#{album_id}/photoid/#{photo_id}"

  return load_photo(photo_url)
end

#login(email, password) ⇒ Object 



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# File 'lib/picasa.rb', line 24

def (email, password)
  url = "https://www.google.com/accounts/ClientLogin"
  source = "MyCompany-TestProject-1.0.0" # source will be of CompanyName-ProjectName-ProjectVersion format

  uri = URI.parse(url)

  request = Net::HTTP.new(uri.host, uri.port)
  request.use_ssl = true
  request.verify_mode = OpenSSL::SSL::VERIFY_NONE
  response, data = request.post(uri.path, "accountType=GOOGLE&Email=#{email}&Passwd=#{password}&service=lh2&source=#{source}")
  data = response.body
  authMatch = Regexp.compile("(Auth=)([A-Za-z0-9_\-]+)\n").match(data.to_s)
  if authMatch
    authorizationKey = authMatch[2].to_s # substring that matched the pattern ([A-Za-z0-9_\-]+)
  end

  self.picasa_session = PicasaSession.new
  self.picasa_session.auth_key = authorizationKey
  self.picasa_session.user_id = email

  return authorizationKey
end

#photos(options = {}) ⇒ Object 



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# File 'lib/picasa.rb', line 82

def photos(options = {})

  options[:user_id] = options[:user_id].nil? ? self.picasa_session.user_id : options[:user_id]
  options[:album] = options[:album].nil? ? "" : options[:album]

  album = Album.new
  album.picasa_session = self.picasa_session
  photos = album.photos(options)

  return photos
end

#post_photo(image_data = nil, options = {}) ⇒ Object 



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# File 'lib/picasa.rb', line 178

def post_photo(image_data = nil, options = {})
  summary = options[:summary] == nil ? "" : options[:summary]
  album_name = options[:album] == nil ? "" : options[:album]
  album_id = options[:album_id] == nil ? "" : options[:album_id]
  local_file_name = options[:local_file_name] == nil ? "" : options[:local_file_name]
  title = options[:title] == nil ? local_file_name : options[:title]

  if(image_data == nil)
    return nil
    # Or throw an exception in next update
  end

  if(album_id != "")
    url = "http://picasaweb.google.com/data/feed/api/user/#{self.picasa_session.user_id}/albumid/#{album_id}"
  else
    url = "http://picasaweb.google.com/data/feed/api/user/#{self.picasa_session.user_id}/album/#{album_name}"
  end

  uri = URI.parse(url)
  http = Net::HTTP.new(uri.host, uri.port)

  headers = {"Content-Type" => "image/jpeg",
    "Authorization" => "GoogleLogin auth=#{self.picasa_session.auth_key}",
    "Slug" => title, "Content-Transfer-Encoding" => "binary"}

  response, data = http.post(uri.path, image_data, headers)
  data = response.body
  photo = self.create_photo_from_xml(data)

  return photo
end