File update

[star-nox]

Created a new branch from the canvas PR for file update mechanism. This PR contains canvas functions too.

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[gitguardian]

⚠️ GitGuardian has uncovered 2 secrets following the scan of your pull request.

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GitGuardian id	Secret	Commit	Filename
7724259	Supabase Service Role JWT	deceb15	ai_ta_backend/nomic.ipynb	View secret
7724259	Supabase Service Role JWT	07238a2	ai_ta_backend/nomic.ipynb	View secret

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[railway-app]

This PR is being deployed to Railway 🚅

flask: ◻️ REMOVED

[star-nox]

All other file-types are working fine and duplicates are getting detected. PDF is still work in progress. I tried changing the text extract method for PDFs, still the same problem.

[star-nox]

@KastanDay the basic function is complete. If the file is duplicate, we skip ingestion. I had a doubt on what to do when the file exists in the database, but it is updated/changed.
I was working on deleting the previous file and continue ingesting the new one. But as per current workflow, we check for duplicates in split_and_upload(), after the new file is already in S3. If I use our current delete_data(), it will also remove the new file along with the old one from S3. How are we handling duplication in S3?

[star-nox]

Encountering minor errors in creating filenames in webscrape. Sometimes filename is none and it causes error when checking for duplicates. Need to fix this.

path name in webscrape:  c2c646ff-a1ca-43fa-a53d-57b0126b4bb6_
Uploading .html to S3
Top of ingest, Course_name ag-test-v1. S3 paths courses/ag-test-v1/c2c646ff-a1ca-43fa-a53d-57b0126b4bb6_.html
KWARGS:  {'url': 'https://python.langchain.com/', 'base_url': 'https://python.langchain.com'}
In split and upload
METADATAS:  [{'course_name': 'ag-test-v1', 's3_path': 'courses/ag-test-v1/c2c646ff-a1ca-43fa-a53d-57b0126b4bb6_.html', 'readable_filename': '', 'url': 'https://python.langchain.com/', 'base_url': 'https://python.langchain.com', 'pagenumber': '', 'timestamp': ''}]
in check_for_duplicates
original_filename:  .html
no. of docs previously present:  13

Update: I think this is a one-off thing. I was not able to reproduce this and there are no entries in the database where the filename is empty in case of webscrape.

[KastanDay]

Tested and working great. Ready for merge.