# tools/git_tool.py
from pathlib import Path

def scan_repository_structure(repo_path: str, max_depth: int = 2) -> str:
    """
    Recursively scan and summarize the directory structure of a repo up to a max depth.
    """
    repo_path = Path(repo_path)
    if not repo_path.exists():
        return f"❌ Error: Path {repo_path} does not exist."

    def _walk(path: Path, depth: int = 0):
        if depth > max_depth:
            return []
        lines = []
        for child in sorted(path.iterdir()):
            prefix = "    " * depth + ("├── " if child.is_file() else "📂 ")
            lines.append(f"{prefix}{child.name}")
            if child.is_dir():
                lines.extend(_walk(child, depth + 1))
        return lines

    structure_lines = _walk(repo_path)
    return f"\n📁 Repository Structure ({repo_path.name}):\n" + "\n".join(structure_lines)

def read_code_file(file_path: str) -> str:
    try:
        with open(file_path, "r", encoding="utf-8") as f:
            return f.read()
    except Exception as e:
        return f"Error reading file: {e}"



# Optional: for LangChain Tool usage
from langchain.tools import Tool

git_scan_tool = Tool(
    name="ScanGitRepoStructure",
    func=scan_repository_structure,
    description="Scans a local Git repository and returns a summarized directory tree. Provide the full path."
)