SlideSpeak coding challenge: Build a PowerPoint Video Extractor Tool

The challenge!

Build a front-end implementation as well as a back-end service to extract videos from PowerPoint documents. This should be done by implementing a simple Next.js front-end that posts a file to a Python server. The front-end is also already implemented in the /frontend folder. You only need to add the necessary logic to switch between the steps and convert the file via the API that you're going to build.

• The tool will be on a webpage similar to: https://slidespeak.co/free-tools/convert-powerpoint-to-pdf/
• Figma Design: https://www.figma.com/design/CRfT0MVMqIV8rAK6HgSnKA/SlideSpeak-Coding-Challenge?node-id=798-61

Acceptance criteria

Back-end API

• Should be implemented in Python.
• Extracting Videos from PowerPoint using a zip utility. This should support multiple processes in parallel. Preferably with a queue.
• The API should consist of one endpoint (POST /extract), which should do the following:

  1. Extracts the videos from the PowerPoint

  2. Uploads the videos to Amazon S3 via boto3

  3. Creates a presigned URL for the user to download

     https://boto3.amazonaws.com/v1/documentation/api/latest/guide/s3-presigned-urls.html

     https://medium.com/@aidan.hallett/securing-aws-s3-uploads-using-presigned-urls-aa821c13ae8d

  4. Returns the presigned S3 url/urls to the client which allows the user to download the file (by opening the url in new tab)

Front-end app

• The front-end should in terms of UX work similarly to https://app.slidespeak.co/powerpoint-optimizer

Nice to haves / tips

• Uses a queuing system like Celery and Redis
• The logic of the front-end ideally should not rely on useEffect too much since it can be difficult to track what is happening
• Tests
• Use conventional commit message style: https://www.conventionalcommits.org/en/v1.0.0/
• Lint your code
• Keep commits clean
• Setup with Docker Compose