flickr_exif.rb

require 'flickraw'
require 'open-uri'
require 'exifr'

class ConnectionAdapter
  def connection
    FlickRaw.api_key = ""
    FlickRaw.shared_secret = ""
    flickr.access_token = ""
    flickr.access_secret = ""
    flickr
  end
end


class Duplicator

  def initialize
    @adapter = ConnectionAdapter.new
    @flickr = @adapter.connection
    @user = @flickr.test.login
  end

  def search_by_filename filename
    @flickr.photos.search user_id: @user.id, text: filename
  end

   def check_by_exif dir, to_filename, ext, from_file = nil
    target = self.search_by_filename to_filename
    target.each do |e|
      flickr_date_time = self.parse_time(@flickr.photos.getExif(photo_id: e.id).exif.to_a.select{|e| e.tag == 'DateTimeOriginal'}.first.raw)
      local_date_time = self.parse_time(EXIFR::JPEG::new("#{dir}/#{to_filename}#{ext}").date_time)
      return true if flickr_date_time == local_date_time

    end
    false
  end

  def parse_time time
    # http://blog.hacklife.net/archives/51297712.html
    time = time.to_s.gsub(/\-/, '/')
    t = time.split(/[\/ :.]/)[0..5]
    Time.utc(*t)
  end
end

d = Duplicator.new
root = "/Volumes/Miio-no-TOSHIBA/DCIM/100CANON"
Dir.chdir( root )
Dir.glob("*.JPG").each do |f|
  p f
  p d.check_by_exif root, f.sub(/\.JPG/,''), '.JPG'
end