google_drive_access.rb

module GoogleDriveAccess
  def new_client
    Signet::OAuth2::Client.new(
      client_id: ENV["CLIENT_ID"],
      :temporary_credential_uri =>
        'https://www.google.com/accounts/OAuthGetRequestToken',
      :authorization_uri =>
        'https://www.google.com/accounts/OAuthAuthorizeToken',
      :token_credential_uri =>
        'https://www.google.com/accounts/OAuthGetAccessToken',
      :client_credential_key => 'anonymous',
      :client_credential_secret => 'anonymous',
      authorization_uri: "https://accounts.google.com/o/oauth2/auth",
      token_credential_uri: "https://accounts.google.com/o/oauth2/token",
      auth_provider_x509_cert_url: "https://www.googleapis.com/oauth2/v1/certs",
      client_secret: ENV["GOOGLE_CLIENT_SECRET"],
      redirect_uri: ENV["REDIRECT_URI"],
      javascript_origins: ENV["JAVASCRIPT_ORIGINS"]
    )
  end

  def refresh(token)
    @client.refresh_token = token
    @client.grant_type = 'refresh_token'
    @client.fetch_access_token!
    @drive.authorization = @client
  end

  def new_drive
    Google::Apis::DriveV2::DriveService.new
  end

  def download_file(file_id, destination_path)
    @drive.get_file(file_id, download_dest: destination_path)
  end

  def upload_file(title, options = {})
    data = Google::Apis::DriveV2::File.new(title: title)
    @drive.insert_file(data, upload_source: options[:source_path], content_type: options[:type])
  end

  def create_folder(title, parents = [])
    data = Google::Apis::DriveV2::File.new(title: title)
    data.mime_type = "application/vnd.google-apps.folder"
    data.parents = parents
    drive.insert_file(data)
  end
end