Netflix to Trakt.tv Sync

Update Details Below. Note that if the dialog shows an older version you may need to recreate your bookmarklet.

Also note that this will probably only work in English, though you may be able to temporally change your language on Netflix to get the sync to work.

There used to be a nice Chrome plugin to synchronize by Netflix history with Trakt.tv but it had been unreliable and doesn't seam to be working now.  I wrote this code to solve my own need but it does the same thing and I am posting it here for others to use.

Note that this is not 100% perfect as some show names aren't exactly the same and some Netflix show's don't use episode names at all. This code it not using any Netflix API calls but rather just scraping your Viewing Activity page and then making API calls to your Trakt.tv account to post the item's it finds.



You may need to manually select some episodes or shows on the Tract.tv side if they aren't matched and it is possible that duplicates could get synced if the names cause issues though I tried to prevent this. In short I'm not out to make this 100% perfect but it should get you 90% of the way and it shows all the changes it will post for confirmation before posting.

Usage

• Drag this link, Sync to Trakt.tv, to your bookmark bar or bookmerks menu.
• This is a bit of Javascript that will inject the Sync tool into your Netflix activity page.
• Open Netflix in your browser and log in.
• This is tested and working in Safari and Chrome.
• Go here https://www.netflix.com/viewingactivity to see your history or click on your name in the top right, then on Account, and finally on Viewing Activity.
• Netflix will not load your entire history so you will need to scroll down to get it to load more.  Keep doing this until all the history you want to sync has been loaded.
• You don't have to do everything, if you are doing this regularly then the first screen or two will be sufficient.
• Now for the magic click the bookmarklet you added while looking at the history page.
• Note: The first tim you do this you will need to log in to Trakt.tv and click the bookmark again.
• The script will scrape the Netflix page, they check each item in Trakt.tv and build a list of already synced items, items not found, and items scheduled to sync.
• If re-running the tool past plays will be greyed out, new plays to by synced will be green,  items that could not be cached will remain white, and duplicate plays that are being ignored will be orange.
• When you are satisfied just click Sync Now to post the changes. You can then check Trakt.tv or reload the page and run the script again to see the results.
• You may have issues the first time the history is pulled from Trakt.tv.  In some cases you may need to load the page and run the script a few times before it successfully reads the history.
• If you have and hard locks or shows that won't identify properly please leave me a note with as much detail about the problem items as possible.  You can get this by adding #debug to the URL, reloading the page, and running the script again.  If you are able to identify the offending items i can make corrections. You can contact me at  jeremy.pyne at gmail.

How It Works

This solution is a simple bit of javascript that scans your Netflix history page and sync's plays over to Trakt.tv. It also needs to read your list of past plays in Trakt.tv along with the history it reads from the Netflix page.

None of this data is saved or sent to any other servers in any way. As the script runs a listing of all the changes that will be posted to Trakt.tv is show with a confirmation option. No passwords or logins are prompted or recorded in any way. You are logging in yourself to Netflix and Trakt.tv, though you do have to grant this application API access to your account. The only bit that is saved is the Trakt.tv access token so that you don't have to log in on every use of the tool. You can even remove this by clearing the cookies for the www.netflix.com domain.

You can view the entire script here first if you wish. The bookmarklet code is an easy way to inject this code into your netflix page, you could also run this code manually in your browser console.

function load(filename, type){
 if(type == 'js'){
  var fileref=document.createElement('script');
  fileref.setAttribute('type','text/javascript');
  fileref.setAttribute('src',filename);
 }
 else if (type == 'css'){
  var fileref=document.createElement('link');
  fileref.setAttribute('rel','stylesheet');
  fileref.setAttribute('type','text/css');
  fileref.setAttribute('href',filename);
 }
 document.getElementsByTagName('head')[0].appendChild(fileref);
}
load('https://www.inkonit.com/netflix/netflix-sync.js?v1.6.5','js');
load('https://www.inkonit.com/netflix/netflix-sync.css?v1.6.5','css');

Alternate Date Format

Your milage in other language may vary but in short if the show and episode titles still match properly between Netflix and Trackt it should still work. The biggest issue is with different date format. Trakt seams to be happy to accept everything in en-US format but Netflix changes formats as you change languages.  I added a flag that will tell the code to read Netflix dates in 'dd/MM/yyyy' format witch should help.  To make this logic execute run the following after changing the language in Netflix. You will need to go to the Netflix site, open up the console in your browser, and paste and execute this line of code.  Then refresh and run the tool again.

document.cookie = "date_format=dd/MM/yyyy; expires=" + new Date(Date.now() + 1000 * 60 * 60 * 24 * 365).toUTCString()

Working On/Planned

• Ability to manually re-query a episode/movie with a custom name.
• Ability to provide episode numbers or auto-detect them based on episode watch order.
• Ability to tie track items to unknown items so they don't sync duplicates.
• Ability to post mapping corrections back to the server so the corrections persist.

Updates

• Updated 8/22/2017, v1.1
• Added version number to script.
• Fixes for many situations where a show, movie, or episode not being found would cause the entire script to never complete processing.
• Manual fixes added for: MSK3k The Return, Marvel's The Defenders, items using Series and Collection nomenclature, items with (U.S) suffix.
• Removed unneeded jquery-ui script.
• Updated 8/23/2017, v1.2
• Added error detection for cases where episode titles can't be determined.
• Added checkbox option to prevent specific items form syncing in odd cases where they match incorrectly.
• Update 8/24/2017, v1.3
• Added another fix hard error when show name wasnt found.
• Added support for shows and movies with Unicode charecters in names.
• Fix for past plays in the format Title: Seaseon ##: Episode wouldnt match properly in history.
• Update 8/28/2017, v1.4
• Fix a typo breaking movies detection.
• Added version number to console output.
• Update 9/8/2017, v1.5
• Added logic to guess episode numbers in Netflix based on play order. This will not work as expected if episodes are played out or order or if only part of the season is visible in the Netflix history. This is also only done as a last chance if no name matching finds a match. If there are incorrect items you can uncheck them to prevent errors or add #no-guess to your page url before running the script to disable this option.
• Fixes for shows with numbers in the title. This was originally working but some unicode fixes I made broke it.
• Fixes for shows with Part # in roman numerals.
• Fixes for MythBusters, Stranger Things, and Wet Hot American Summer.
• Update 10/25/2017, v1.6
• Major rewrite of code for maintainability and reliability.
• Replaced custom process counting with more reliable promise-queue module.
• UI improvements.
• More logging with #debug flag.
• Updated 12/14/2017, v1.6.4
• Fixed Trakt authentication bug.
• Fix for Stranger Things, Marvel's The Defenders.
• Updated 3/5/2017, v1.6.5
• Added a flag to support 'dd/MM/yyyy' date encodings when changing the language on Netflix. See Alternate Date Format above for me details.