#!/usr/bin/env python3
"""
Simple callback debug script to see exact error
"""

import requests
import json

def test_simple_callback():
    """Test a simple callback to see the exact error"""
    try:
        # Test the simplest possible callback
        callback_data = {
            "output": "current-balance.children",
            "inputs": [
                {
                    "id": "ultra-fast-interval",
                    "property": "n_intervals", 
                    "value": 1
                }
            ]
        }
        
        print("Sending callback request...")
        response = requests.post(
            'http://127.0.0.1:8051/_dash-update-component',
            json=callback_data,
            timeout=15,
            headers={'Content-Type': 'application/json'}
        )
        
        print(f"Status Code: {response.status_code}")
        print(f"Response Headers: {dict(response.headers)}")
        print(f"Response Text (first 1000 chars):")
        print(response.text[:1000])
        print("=" * 50)
        
        if response.status_code == 500:
            # Try to extract error from HTML
            if "Traceback" in response.text:
                lines = response.text.split('\n')
                for i, line in enumerate(lines):
                    if "Traceback" in line:
                        # Print next 20 lines for error details
                        for j in range(i, min(i+20, len(lines))):
                            print(lines[j])
                        break
        
    except Exception as e:
        print(f"Request failed: {e}")

if __name__ == "__main__":
    test_simple_callback()