Flickr to Pinterest

flickr_to_pinterest.rb

require 'mechanize'
require 'cgi'
require 'json'

PINTERST_EMAIL = "...."
PINTERST_PASSWORD = "...."
PINTERST_BOARD_ID = "264375509314468871"
FLICKR_API_KEY = "3fffd0917fa897e24bd5a442018df29a"
FLICKR_PHOTOSET = "72157625277593652"
ALREADY_POSTED_FILE = "already_posted.txt"

def csrf_token(agent)
  csrftoken = agent.cookies.find { |c| c.name == "csrftoken" }.value
  raise "Unable to find CSRF token" if csrftoken.nil?
  return csrftoken
end

def post_photo_to_pinterst(flickr_url, description, image_url)
  p "Attempting to post photo '#{description}' #{flickr_url} #{image_url}"

  agent = Mechanize.new
  agent.user_agent_alias = 'Mac Safari'

  #Login
  p "Logging in"
  page = agent.get "https://www.pinterest.com/login"
  result = agent.post('https://www.pinterest.com/resource/UserSessionResource/create/', {
              source_url: '/login/',
              data: '{"options":{"username_or_email":"' + PINTERST_EMAIL + '","password":"' + PINTERST_PASSWORD + '"},"context":{}}',
              module_path: 'App()>LoginPage()>Login()>Button(class_name=primary, text=Log In, type=submit, size=large)'
            }, {
                'X-Requested-With' => 'XMLHttpRequest',
                'X-CSRFToken' => csrf_token(agent),
            })
  raise "Login failed:\n#{result}" unless result.code != 200
  p "Logged in"

  #Pin photo
  p "Pinning"
  page = agent.get "http://www.pinterest.com/pin/create/button/?url=#{CGI::escape flickr_url}&media=#{CGI::escape image_url}&description=#{CGI::escape description}"
  result = agent.post('https://www.pinterest.com/resource/PinResource/create/', {
    "source_url" => "/pin/find/?url=#{CGI::escape(flickr_url)}",
    "data" => %|{"options":{"board_id":"#{PINTERST_BOARD_ID}","description":"#{description}","link":"#{flickr_url}","share_twitter":false,"image_url":"#{image_url}","method":"button"},"context":{}}|,
    "module_path" => "App()>ImagesFeedPage(resource=FindPinImagesResource(url=#{flickr_url}))>Grid()>GridItems()>Pinnable()>ShowModalButton(module=PinCreate)#Modal(module=PinCreate())"
  }, {
    "X-CSRFToken" => csrf_token(agent),
    "X-Requested-With" => "XMLHttpRequest",
  })
  json_result = JSON.parse(result.body)
  raise "Pin failed:\n#{json_result}" unless result.code != 200
  p "Pinned.  Pin id: #{json_result["resource_response"]["data"]["id"]}"

  p "Done"
end

class FlickrPhoto
  def initialize(photo_json)
    @json = photo_json
  end

  def photo_id
    @json['id']
  end

  def title
    @json['title']
  end

  def flickr_url
    "https://www.flickr.com/photos/cavenagh/#{photo_id}"
  end

  def image_url
    @json['url_m']
  end

  def to_s
    "#{title} (#{photo_id})"
  end
end

def random_flickr_photo
  p "Fletching flickr photos for photoset #{FLICKR_PHOTOSET}"
  agent = Mechanize.new
  photos = []
  page_count = 1
  json_results = {}
  begin
    p "Fetch page #{page_count}"
    page = agent.get "https://api.flickr.com/services/rest/?method=flickr.photosets.getPhotos&page=#{page_count}&api_key=#{FLICKR_API_KEY}&photoset_id=#{FLICKR_PHOTOSET}&format=json&nojsoncallback=1&extras=url_m"
    json_results = JSON.parse(page.body)
    photos = photos + json_results['photoset']['photo'].collect {|j| FlickrPhoto.new(j)}
    page_count = page_count + 1
  end while json_results['photoset']['total'].to_i > photos.size
  p "Fetched #{photos.size} photos"

  already_posted = IO.read(ALREADY_POSTED_FILE).split("\n").collect { |s| s.strip }.uniq
  photos.reject! { |p| already_posted.include? p.photo_id }
  raise "No photos to post!" if photos.empty?
  p "Unposted photos #{photos.size}"

  return photos.sample
end

photo = random_flickr_photo
p "Posting photo #{photo}"
post_photo_to_pinterst photo.flickr_url, photo.title, photo.image_url
open(ALREADY_POSTED_FILE, 'a') { |f| f << "#{photo.photo_id}\n" }