google api v3, set youtube channer banner, using ruby

set youtube channer banner

#!/usr/bin/ruby

require 'rubygems'
gem 'google-api-client', '>0.7'
require 'google/api_client'
require 'google/api_client/client_secrets'
require 'google/api_client/auth/file_storage'
require 'google/api_client/auth/installed_app'

# This OAuth 2.0 access scope allows for read-only access to the authenticated
# user's account, but not other types of account access.
YOUTUBE_READ_WRITE_SCOPE = 'https://www.googleapis.com/auth/youtube'
YOUTUBE_API_SERVICE_NAME = 'youtube'
YOUTUBE_API_VERSION = 'v3'

def get_authenticated_service
  client = Google::APIClient.new(
    :application_name => $PROGRAM_NAME,
    :application_version => '1.0.0'
  )
  youtube = client.discovered_api(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION)

  file_storage = Google::APIClient::FileStorage.new("#{$PROGRAM_NAME}-oauth2.json")
  if file_storage.authorization.nil?
    client_secrets = Google::APIClient::ClientSecrets.load
    flow = Google::APIClient::InstalledAppFlow.new(
      :client_id => client_secrets.client_id,
      :client_secret => client_secrets.client_secret,
      :scope => [YOUTUBE_READ_WRITE_SCOPE]
    )
    client.authorization = flow.authorize(file_storage)
  else
    client.authorization = file_storage.authorization
  end

  return client, youtube
end

def main
  client, youtube = get_authenticated_service

  begin
    # Retrieve the "contentDetails" part of the channel resource for the
    # authenticated user's channel.
    body =   {
       :brandingSettings =>
       {
        :image =>
        {
         :bannerImageUrl => "http://www.hdwallpapersinn.com/wp-content/uploads/2014/08/51b451a37900336010.jpg"
        }
       },
       :id => "UCKfVENopqTI7b-pRo5khMKw"
      }

    image_insert_response = client.execute!(
      :api_method => youtube.channel_banners.insert,
      :body_object => body,
      :media => Google::APIClient::UploadIO.new("wallhaven-109381.jpg", 'image/jpeg'),
      :parameters => {
        :uploadType => 'multipart',
        :part => "brandingSettings"
      }
    )

    channel_list = client.execute!(
      :api_method => youtube.channels.list,
      :parameters => {
        :mine => true,
        :part => "brandingSettings"
        })
    channel_list_res = JSON.parse(channel_list.response.body)
    banner_url = JSON.parse(image_insert_response.body)["url"]
    channel_list_res["items"][0]["brandingSettings"]["image"]["bannerExternalUrl"] = []
    channel_brandingSettings = channel_list_res["items"][0]["brandingSettings"]
    channel_brandingSettings["image"]["bannerExternalUrl"] = banner_url
    puts channel_list_res

    channels_update_response = client.execute!(
      :api_method => youtube.channels.update,
      :parameters => {
        :part => 'brandingSettings',
      },
      :body_object => {
        'brandingSettings' => channel_brandingSettings,
        'id' => channel_list_res['items'][0]['id']
      })    
  rescue Google::APIClient::TransmissionError => e
    puts e.result.body
  end
end

main