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Flask API endpoint that retrieves chat history for a specific text section, verifying user ownership before returning messages.

Purpose

This endpoint serves as a REST API route to fetch chat conversation history associated with a particular text section. It authenticates the user, verifies they own the requested section, and returns the chat messages. Currently returns an empty list as a placeholder implementation, suggesting the chat history feature is under development or the storage mechanism is not yet implemented.

Source Code

def get_section_chat_history(section_id):
    """Get chat history for a section"""
    try:
        user_email = get_current_user()
        
        # Verify section ownership
        text_section = text_section_service.get_text_section(section_id)
        if not text_section or text_section.owner != user_email:
            return jsonify({'error': 'Text section not found or access denied'}), 404
        
        # Get chat history from database
        # For now, return empty history
        messages = []
        
        return jsonify({
            'success': True,
            'messages': messages
        })
        
    except Exception as e:
        logger.error(f"Error getting section chat history: {e}")
        return jsonify({'error': str(e)}), 400

Parameters

Parameter Details

section_id: String identifier for the text section whose chat history is being requested. This ID is extracted from the URL path and used to look up the section in the database. Must correspond to an existing text section owned by the authenticated user.

Return Value

Returns a Flask JSON response object. On success (200): {'success': True, 'messages': []} where messages is currently an empty list. On section not found or access denied (404): {'error': 'Text section not found or access denied'}. On exception (400): {'error': '<error message>'}. The HTTP status code is included as the second element of the tuple.

Dependencies

• flask
• logging

Required Imports

from flask import jsonify
import logging

Usage Example

# Example API call (client-side)
import requests

# Assuming authentication token is set in session/headers
response = requests.get(
    'http://your-app.com/api/sections/abc123/chat/history',
    headers={'Authorization': 'Bearer <token>'}
)

if response.status_code == 200:
    data = response.json()
    messages = data['messages']
    print(f"Retrieved {len(messages)} messages")
elif response.status_code == 404:
    print("Section not found or access denied")
else:
    print(f"Error: {response.json()['error']}")

Best Practices

• Always verify user ownership of resources before returning data to prevent unauthorized access
• The function currently returns empty messages - ensure to implement actual chat history retrieval from database when ready
• Use proper HTTP status codes: 404 for not found/access denied, 400 for general errors, 200 for success
• Log errors with sufficient context for debugging while avoiding sensitive data in logs
• Consider implementing pagination for chat history if messages can grow large
• The endpoint is accessible via two routes (/api/sections/ and /api/text-sections/) - ensure consistency in API design
• Consider returning 403 Forbidden instead of 404 for access denied cases to distinguish between non-existent and unauthorized resources
• Add rate limiting to prevent abuse of the API endpoint
• Consider adding query parameters for filtering messages by date range or limiting result count

Tags

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