# Simple Import Resolution System

## Overview

The Simple Import Resolution System provides a straightforward approach to resolving imports for code execution. It analyzes the main file and all its dependencies, extracts all imports, and loads them into the namespace.

## How It Works

### 1. **Analyze Main File**
- Parse the main file using AST
- Extract all import statements
- Identify local file dependencies

### 2. **Process Dependencies Recursively**
- For each local file dependency found
- Parse that file and extract its imports
- Continue recursively until all dependencies are processed

### 3. **Load Everything into Namespace**
- Import all modules (standard library, third-party, local)
- Extract all classes from imported modules
- Add everything to the execution namespace

## Key Features

### ✅ **Simple and Direct**
- No complex configuration files
- No multiple strategies
- Just analyze files and import what's needed

### ✅ **Recursive Dependency Resolution**
- Automatically finds all local file dependencies
- Processes them recursively
- Handles circular dependencies gracefully

### ✅ **Comprehensive Import Loading**
- Standard library modules
- Third-party packages
- Local workspace modules
- All classes from imported modules

### ✅ **No Hardcoded Patterns**
- No hardcoded class lists
- No hardcoded module patterns
- Everything is discovered dynamically

## Usage

### Basic Usage

```python
from kaizen.autofix.test.simple_import_resolver import SimpleImportResolver

# Create resolver
resolver = SimpleImportResolver(workspace_root=Path("/path/to/workspace"))

# Resolve imports for a file
namespace = resolver.resolve_imports_for_file(file_path)
```

### Integration with CodeRegionExecutor

```python
class CodeRegionExecutor:
    def __init__(self, workspace_root: Path, imported_dependencies: Optional[Dict[str, Any]] = None):
        # Initialize simple import resolver
        self.simple_import_resolver = SimpleImportResolver(workspace_root)
    
    def _create_custom_import_manager(self, region_info: RegionInfo):
        class CustomImportManager:
            def __enter__(self):
                # Use simple import resolver
                if self.region_info and self.region_info.file_path:
                    resolved_imports = self.executor.simple_import_resolver.resolve_imports_for_file(
                        self.region_info.file_path
                    )
                    self.namespace.update(resolved_imports)
                
                return self.namespace
```

## Example

### Input File Structure
```
workspace/
├── main.py          # Main file to execute
├── utils.py         # Utility functions
├── models.py        # Data models
└── types.py         # Type definitions
```

### main.py
```python
import os
from typing import List
from .utils import helper_function
from .models import User, Product
from .types import Status

class MainClass:
    def __init__(self):
        self.users: List[User] = []
        self.status = Status.ACTIVE
```

### What Happens

1. **Parse main.py**: Extract imports `os`, `typing`, `.utils`, `.models`, `.types`
2. **Process local dependencies**:
   - Parse `utils.py` → extract its imports
   - Parse `models.py` → extract its imports  
   - Parse `types.py` → extract its imports
3. **Load everything into namespace**:
   - `os` module
   - `typing` module and `List` class
   - All classes from `utils.py`
   - All classes from `models.py` (User, Product)
   - All classes from `types.py` (Status)
   - MainClass from main.py

### Result Namespace
```python
{
    'os': <module 'os'>,
    'typing': <module 'typing'>,
    'List': typing.List,
    'helper_function': <function>,
    'User': <class 'User'>,
    'Product': <class 'Product'>,
    'Status': <enum 'Status'>,
    'MainClass': <class 'MainClass'>
}
```

## Benefits

### 1. **Simplicity**
- Single class with clear responsibilities
- Straightforward algorithm
- Easy to understand and maintain

### 2. **Completeness**
- Finds all dependencies automatically
- Loads all needed imports
- No missing imports

### 3. **Reliability**
- Handles edge cases gracefully
- Robust error handling
- No hardcoded assumptions

### 4. **Performance**
- Caches loaded modules
- Avoids duplicate processing
- Efficient AST parsing

## Comparison with Previous Approach

### Before (Complex)
```python
# Multiple configuration files
# Multiple strategies
# Complex dependency resolution
# Hardcoded patterns
# Over-engineered solution

resolver = DynamicImportResolver(config)
resolver.load_configuration_from_file(config_path)
namespace = resolver.resolve_imports_for_code(code, file_path)
```

### After (Simple)
```python
# Single class
# Direct file analysis
# Recursive dependency resolution
# No hardcoded patterns
# Straightforward solution

resolver = SimpleImportResolver(workspace_root)
namespace = resolver.resolve_imports_for_file(file_path)
```

## Testing

The system includes comprehensive tests in `test_simple_import_resolver.py`:

- Initialization tests
- Import extraction from AST
- External module detection
- Local path resolution
- Class extraction from modules
- File processing and dependency resolution
- Complete import resolution workflow

## Conclusion

The Simple Import Resolution System provides exactly what you need: a straightforward way to analyze the main file and all its dependencies, extract all imports, and load everything into the namespace. It's simple, reliable, and eliminates all hardcoded patterns while being much easier to understand and maintain. 