module VimeoUpload

# File lib/vimeo_upload.rb, line 84
def self.change_title(filename, video_id, api_key)

  # Change video title of a video in vimeo
  # I prefer putting api_key as an environment variable. Use figaro gem if needed
  # Call function in the following format
  # VimeoUpload.change_title(filename, video_id, vimeo_key)
  # eg;
  # VimeoUpload.upload("'My Video', '123456789', ENV['api_key'])
  # Returns the video_id

  auth = "bearer #{api_key}"

  uri = URI("https://api.vimeo.com/videos/#{video_id}")

  patch_req = Net::HTTP::Patch.new("#{uri.path}?#{uri.query}", initheader = {"Authorization" => auth, "name" => "Test"})
  patch_req.set_form_data({"name" => filename})


  begin
    http=Net::HTTP.new(uri.host, uri.port)
    http.use_ssl=true
    patch_resp = http.request(patch_req)

  rescue Errno::EPIPE
    puts "Error occured"
  end
  
  return video_id
end

# File lib/vimeo_upload.rb, line 7
def self.upload(filepath, filename, api_key)

  # Upload a video to vimeo
  # I prefer putting api_key as an environment variable. Use figaro gem if needed
  # Call function in the following format
  # VimeoUpload.upload(absolute_filepath, filename, vimeo_key)
  # eg;
  # VimeoUpload.upload("#{Rails.root}/public/uploads/video.webm", 'My Video', ENV['api_key'])
  # Return a video_id that references to the video

  auth = "bearer #{api_key}"

  # create ticket
  resp = HTTParty.post "https://api.vimeo.com/me/videos", 
                        headers: {"Authorization" => auth, 
                                  "Accept" => "application/vnd.vimeo.*+json;version=3.2"}, 
                        body: {type: "streaming"}

  ticket = JSON.parse(resp.body)
  if resp.body['error']
    raise StandardError, ticket['error']
  end
  target = ticket["upload_link_secure"]
  size = File.size(filepath)
  last_byte = 0
  # create ticket end

  # upload video
  File.open(filepath, "rb") do |f|
    uri = URI(target)
    while last_byte < size do
      req = Net::HTTP::Put.new("#{uri.path}?#{uri.query}", initheader = {"Authorization" => auth, "Content-Type" => "video/mp4", "Content-Length" => size.to_s})
      req.body = f.read

      begin
        http=Net::HTTP.new(uri.host, uri.port)
        http.use_ssl=true
        response = http.request(req)

      rescue Errno::EPIPE
        puts "Error occured"
      end

      progress_resp = HTTParty.put target, headers: {"Content-Range" => 'bytes */*', "Authorization" => auth}
      last_byte = progress_resp.headers["range"].split("-").last.to_i
    end
  end
  # upload video end

  # delete ticket (required to view video in vimeo)
  complete_uri=ticket["complete_uri"]

  uri = URI("https://api.vimeo.com" + complete_uri)
  delete_req = Net::HTTP::Delete.new("#{uri.path}?#{uri.query}", initheader = {"Authorization" => auth})

  begin
    http=Net::HTTP.new(uri.host, uri.port)
    http.use_ssl=true
    delete_resp = http.request(delete_req)

  rescue Errno::EPIPE
    puts "Error occured"
  end

  video_location = delete_resp["location"]
  # delete ticket end

  video_id = video_location.split('/')[2]
  
  # change title
  change_title(filename, video_id, api_key)

  return video_id
end