#!/usr/bin/env python3
"""Test script to verify in-memory file handling works correctly."""

import sys
sys.path.append('.')

from io import StringIO
import pandas as pd

# Test 1: Verify StringIO works with pandas
def test_stringio_pandas():
    print("Test 1: StringIO with pandas")
    csv_content = """word,frequency
apple,100
banana,80
cherry,60"""
    
    content_io = StringIO(csv_content)
    df = pd.read_csv(content_io)
    print(f"✓ Successfully read CSV from StringIO: {len(df)} rows")
    print(df)
    print()

# Test 2: Test custom config parsing
def test_custom_config():
    print("Test 2: Custom config parsing")
    from text_analyzer.lexical_sophistication import LexicalSophisticationAnalyzer
    
    analyzer = LexicalSophisticationAnalyzer()
    
    config = {
        'content': """word\tfreq
hello\t500
world\t400
test\t300""",
        'word_column': 'word',
        'freq_column': 'freq',
        'delimiter': '\t',
        'is_custom_config': True
    }
    
    result = analyzer._parse_custom_config(config)
    print(f"✓ Successfully parsed custom config: {len(result)} entries")
    print(f"Sample entries: {list(result.items())[:3]}")
    print()

# Test 3: Test file content extraction
def test_file_extraction():
    print("Test 3: File content extraction")
    from web_app.handlers.analysis_handlers import AnalysisHandlers
    
    # Simulate uploaded file
    class MockUploadedFile:
        def __init__(self, name, content):
            self.name = name
            self._content = content.encode('utf-8')
            self._position = 0
        
        def read(self):
            self._position = len(self._content)
            return self._content
        
        def seek(self, position):
            self._position = position
    
    mock_file = MockUploadedFile("test.txt", "This is a test file content.")
    file_contents = AnalysisHandlers.extract_uploaded_files([mock_file])
    
    print(f"✓ Successfully extracted {len(file_contents)} files")
    for filename, content in file_contents:
        print(f"  - {filename}: {content[:50]}...")
    print()

if __name__ == "__main__":
    print("Testing in-memory file handling...\n")
    
    try:
        test_stringio_pandas()
        test_custom_config()
        test_file_extraction()
        print("✅ All tests passed!")
    except Exception as e:
        print(f"❌ Test failed: {e}")
        import traceback
        traceback.print_exc()