SUMMARY.md


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# Simplified Chunks Implementation Summary

## Problem

- Inconsistency in creating and handling simplified chunks across different document types
- Simplified chunks were being managed in Vectorstore.ts instead of AgentDocumentManager.ts
- Different handling for different document types (PDFs, audio, video)
- Some document types didn't have simplified chunks at all

## Solution

1. Created standardized methods in `AgentDocumentManager.ts` to handle simplified chunks consistently:

    - `addSimplifiedChunks`: Adds simplified chunks to a document based on its type
    - `getSimplifiedChunks`: Retrieves all simplified chunks from a document
    - `getSimplifiedChunkById`: Gets a specific chunk by its ID
    - `getOriginalSegments`: Retrieves original media segments for audio/video documents

2. Updated `Vectorstore.ts` to use the new AgentDocumentManager methods:

    - Replaced direct chunk_simpl handling for audio/video files
    - Replaced separate chunk handling for PDF documents
    - Added support for determining document type based on file extension

3. Updated ChatBox components to use the new AgentDocumentManager methods:
    - `handleCitationClick`: Now uses docManager.getSimplifiedChunkById
    - `getDirectMatchingSegmentStart`: Now uses docManager.getOriginalSegments

## Benefits

1. Consistent simplified chunk creation across all document types
2. Central management of chunks in AgentDocumentManager
3. Better type safety and error handling
4. Improved code maintainability
5. Consistent approach to accessing chunks when citations are clicked

## Document Types Supported

- PDFs: startPage, endPage, location metadata
- Audio: start_time, end_time, indexes metadata
- Video: start_time, end_time, indexes metadata
- CSV: rowStart, rowEnd, colStart, colEnd metadata
- Default/Text: basic metadata only

All document types now store consistent chunk IDs that match the ones used in the vector store.