Google Analytics API Client with ruby

analytics.rb

# 参考
# * https://developers.google.com/google-apps/calendar/quickstart/ruby
# * https://github.com/google/google-api-ruby-client/blob/master/samples/cli/lib/samples/analytics.rb
# * https://gist.github.com/rakuishi/5010ee819260cdd32a15
# $ gem install google-api-client

require 'googleauth'
require 'googleauth/stores/file_token_store'
require 'google/apis/analytics_v3'
require 'fileutils'
require 'Date'

# Google Developers Console => 認証情報 => Create credentials => OAuth クライアント ID から作成する
CLIENT_SECRETS_PATH = 'client_secret.json'
CREDENTIALS_PATH = "#{ENV['HOME']}/.config/google/credentials.yaml"
OOB_URI = 'urn:ietf:wg:oauth:2.0:oob'
SCOPE = Google::Apis::AnalyticsV3::AUTH_ANALYTICS
VIEW_ID = 'VIEW_ID'

def authorize
  FileUtils.mkdir_p(File.dirname(CREDENTIALS_PATH))

  client_id = Google::Auth::ClientId.from_file(CLIENT_SECRETS_PATH)
  token_store = Google::Auth::Stores::FileTokenStore.new(file: CREDENTIALS_PATH)
  authorizer = Google::Auth::UserAuthorizer.new(client_id, SCOPE, token_store)
  user_id = 'default'

  credentials = authorizer.get_credentials(user_id)
  if credentials.nil?
    url = authorizer.get_authorization_url(base_url: OOB_URI)
    puts "Open the following URL in the browser and enter the resulting code after authorization"
    puts url
    code = gets
    credentials = authorizer.get_and_store_credentials_from_code(user_id: user_id, code: code, base_url: OOB_URI)
  end
  credentials
end

service = Google::Apis::AnalyticsV3::AnalyticsService.new
service.authorization = authorize

result = service.get_ga_data(
  "ga:#{VIEW_ID}",
  Date.today.prev_day(7).to_s,
  Date.today.to_s,
  'ga:screenviews',
  dimensions: 'ga:screenName',
  sort: '-ga:screenviews',
  max_results: 10,
  filters: 'ga:screenName=~^Screen/Name/.+?$'
)

result.rows.each do |row|
  if matched = /^Screen\/Name\/(.+?)$/.match(row[0])
    puts "name: #{matched[1]}, count: #{row[1]}"
  end
end