Refactoring V1

[moalimir]

1. General

• Dependency Audit: The torch and torchvision versions specified in requirements.txt should be reviewed for compatibility with facenet-pytorch, and a more flexible versioning scheme should be considered.

• Configuration Validation: Implement a uniform and user-friendly approach to validate and handle missing .env variables across all scripts to prevent crashes.

2. bot.py

• Improve Error Handling: Refactor the broad try...except block in the continue_find callback function to use more specific exception handling for better user feedback and logging.
• Fix Memory Leak: Implement a cleanup mechanism for the media_group_locks dictionary to prevent a memory leak from unprocessed media groups over time.
• Address Race Condition: Re-evaluate and strengthen the media group handling logic to make the process of sending a button for the first image of a group more robust and prevent potential race conditions.

3. downloader.py

• Make Session Name Configurable: The hardcoded client session name "my_account" should be moved to the .env file to be configurable.
• Enhance Error Handling: Add a retry mechanism for generic network errors, in addition to the existing handling for FloodWait, to make the download process more resilient.

4. indexer.py

• Simplify Configuration: The logic for determining the output file path should be simplified to use a single, explicit environment variable instead of relying on multiple, potentially confusing fallbacks.
• Handle Embedding Collisions: Investigate the cause of embedding collisions and implement a more robust strategy than simply overwriting the existing entry.