#!/usr/bin/env python3
"""
Test RAG system integration with smart chunking.

⚠️  IMPORTANT: This test requires the virtual environment to be activated:
    source .venv/bin/activate
    PYTHONPATH=. python tests/test_rag_integration.py

Or run directly with venv:
    source .venv/bin/activate && PYTHONPATH=. python tests/test_rag_integration.py
"""

import os
import tempfile
from pathlib import Path

from mini_rag.indexer import ProjectIndexer
from mini_rag.search import CodeSearcher

# Check if virtual environment is activated


def check_venv():
    if "VIRTUAL_ENV" not in os.environ:
        print("⚠️  WARNING: Virtual environment not detected!")
        print("   This test requires the virtual environment to be activated.")
        print(
            "   Run: source .venv/bin/activate && PYTHONPATH=. python tests/test_rag_integration.py"
        )
        print("   Continuing anyway...\n")


check_venv()

# Sample Python file with proper structure
sample_code = '''"""
Sample module for testing RAG system.
This module demonstrates various Python constructs.
"""

import os
import sys
from typing import List, Optional
from dataclasses import dataclass

# Module-level constants
DEFAULT_TIMEOUT = 30
MAX_RETRIES = 3

@dataclass


class Config:
    """Configuration dataclass."""
    timeout: int = DEFAULT_TIMEOUT
    retries: int = MAX_RETRIES


class DataProcessor:
    """
    Main data processor class.

    This class handles the processing of various data types
    and provides a unified interface for data operations.
    """

    def __init__(self, config: Config):
        """
        Initialize the processor with configuration.

        Args:
            config: Configuration object
        """
        self.config = config
        self._cache = {}
        self._initialized = False

    def process(self, data: List[Dict]) -> List[Dict]:
        """
        Process a list of data items.

        Args:
            data: List of dictionaries to process

        Returns:
            Processed data list
        """
        if not self._initialized:
            self._initialize()

        results = []
        for item in data:
            processed = self._process_item(item)
            results.append(processed)

        return results

    def _initialize(self):
        """Initialize internal state."""
        self._cache.clear()
        self._initialized = True

    def _process_item(self, item: Dict) -> Dict:
        """Process a single item."""
        # Implementation details
        return {**item, 'processed': True}

def main():
    """Main entry point."""
    config = Config()
    processor = DataProcessor(config)

    test_data = [
        {'id': 1, 'value': 'test1'},
        {'id': 2, 'value': 'test2'},
    ]

    results = processor.process(test_data)
    print(f"Processed {len(results)} items")

if __name__ == "__main__":
    main()
'''

# Sample markdown file
sample_markdown = """# RAG System Documentation

## Overview

This is the documentation for the RAG system that demonstrates
smart chunking capabilities.

## Features

### Smart Code Chunking

The system intelligently chunks code files by:
- Keeping docstrings with their functions/classes
- Creating logical boundaries at function and class definitions
- Preserving context through parent-child relationships

### Markdown Support

Markdown files are chunked by sections with:
- Header-based splitting
- Context overlap between chunks
- Preservation of document structure

## Usage

### Basic Example

```python
from mini_rag import ProjectIndexer

indexer = ProjectIndexer("/path/to/project")
indexer.index_project()
```

### Advanced Configuration

You can customize the chunking behavior:

```python
from mini_rag import CodeChunker

chunker = CodeChunker(
    max_chunk_size=1000,
    min_chunk_size=50
)
```

## API Reference

### ProjectIndexer

Main class for indexing projects.

### CodeSearcher

Provides semantic search capabilities.
"""


def test_integration():
    """Test the complete RAG system with smart chunking."""

    # Create temporary project directory
    with tempfile.TemporaryDirectory() as tmpdir:
        project_path = Path(tmpdir)

        # Create test files
        (project_path / "processor.py").write_text(sample_code)
        (project_path / "README.md").write_text(sample_markdown)

        print("=" * 60)
        print("TESTING RAG SYSTEM INTEGRATION")
        print("=" * 60)

        # Index the project
        print("\n1. Indexing project...")
        indexer = ProjectIndexer(project_path)
        stats = indexer.index_project()

        print(f"   - Files indexed: {stats['files_indexed']}")
        print(f"   - Total chunks: {stats['chunks_created']}")
        print(f"   - Indexing time: {stats['time_taken']:.2f}s")

        # Verify chunks were created properly
        print("\n2. Verifying chunk metadata...")

        # Initialize searcher
        searcher = CodeSearcher(project_path)

        # Search for specific content
        print("\n3. Testing search functionality...")

        # Test 1: Search for class with docstring
        results = searcher.search("data processor class unified interface", top_k=3)
        print("\n   Test 1 - Class search:")
        for i, result in enumerate(results[:1]):
            print(f"   - Match {i+1}: {result.file_path}")
            print(f"     Chunk type: {result.chunk_type}")
            print(f"     Score: {result.score:.3f}")
            if "This class handles" in result.content:
                print("     [OK] Docstring included with class")
            else:
                print("     [FAIL] Docstring not found")

        # Test 2: Search for method with docstring
        results = searcher.search("process list of data items", top_k=3)
        print("\n   Test 2 - Method search:")
        for i, result in enumerate(results[:1]):
            print(f"   - Match {i+1}: {result.file_path}")
            print(f"     Chunk type: {result.chunk_type}")
            print(f"     Parent class: {getattr(result, 'parent_class', 'N/A')}")
            if "Args:" in result.content and "Returns:" in result.content:
                print("     [OK] Docstring included with method")
            else:
                print("     [FAIL] Method docstring not complete")

        # Test 3: Search markdown content
        results = searcher.search("smart chunking capabilities markdown", top_k=3)
        print("\n   Test 3 - Markdown search:")
        for i, result in enumerate(results[:1]):
            print(f"   - Match {i+1}: {result.file_path}")
            print(f"     Chunk type: {result.chunk_type}")
            print(f"     Lines: {result.start_line}-{result.end_line}")

        # Test 4: Verify chunk navigation
        print("\n   Test 4 - Chunk navigation:")
        all_results = searcher.search("", top_k=100)  # Get all chunks
        py_chunks = [r for r in all_results if r.file_path.endswith(".py")]

        if py_chunks:
            first_chunk = py_chunks[0]
            print(f"   - First chunk: index={getattr(first_chunk, 'chunk_index', 'N/A')}")
            print(f"     Next chunk ID: {getattr(first_chunk, 'next_chunk_id', 'N/A')}")

            # Verify chain
            valid_chain = True
            for i in range(len(py_chunks) - 1):
                curr = py_chunks[i]
                # py_chunks[i + 1]  # Unused variable removed
                expected_next = f"processor_{i+1}"
                if getattr(curr, "next_chunk_id", None) != expected_next:
                    valid_chain = False
                    break

            if valid_chain:
                print("     [OK] Chunk navigation chain is valid")
            else:
                print("     [FAIL] Chunk navigation chain broken")

        print("\n" + "=" * 60)
        print("INTEGRATION TEST COMPLETED")
        print("=" * 60)


if __name__ == "__main__":
    test_integration()