Uses the YouTube Data Web API to check the recent activities of channels to display a list of new videos.

Configuration in config/config.go

Modify seenFileName to a path you like, set your YouTube key in youTubeKey (like AIzaSy...) and change the returned string array of the GetYouTubeChannelsToCheck() function.

To extract the Channel ID from channels like this https://www.youtube.com/user/vsauce where the URL does not contain the ID, this website can be used: https://commentpicker.com/youtube-channel-id.php or this can be followed: https://stackoverflow.com/a/51016875/6908755

---

The file specified by seenFileName contains the seen videos in this format:

Medical Medium|The Medical Medium Answering Your Food & Health Questions
Medical Medium|Why Celery Juice Is Healing Millions
...

Output

Running this produces an output like this and only lists new videos:

Medical Medium   https://www.youtube.com/channel/UCUORv_qpgmg8N5plVqlYjXg
  - The Medical Medium Answering Your Food & Health Questions
  - Why Celery Juice Is Healing Millions

It uses the https://www.googleapis.com/youtube/v3/activities API call which returns just the last 5 videos, but more are really not needed.

As a note, running this fresh always displays all videos as new because seen-youtube.txt is not filled yet.