"""
System tools — local machine operations.

These tools affect the host system directly. Use with care.
"""

import asyncio
import logging

logger = logging.getLogger(__name__)

ALLOW_SCRIPT = "/home/scott/.local/bin/claude-allow-dir"


async def claude_allow_dir(path: str, mode: str = "rw") -> str:
    """Add Read/Edit allow rules to ~/.claude/settings.json for a directory.

    Calls the claude-allow-dir script, which edits settings.json directly.
    Changes take effect in the next Claude Code session (or after /hooks reload).
    """
    if mode not in ("r", "w", "rw"):
        return f"Error: mode must be r, w, or rw (got '{mode}')"

    try:
        proc = await asyncio.create_subprocess_exec(
            "python3", ALLOW_SCRIPT, path, mode,
            stdout=asyncio.subprocess.PIPE,
            stderr=asyncio.subprocess.PIPE,
        )
        stdout, stderr = await asyncio.wait_for(proc.communicate(), timeout=10)
        output = stdout.decode().strip()
        err = stderr.decode().strip()

        if proc.returncode != 0:
            logger.warning("claude-allow-dir failed (rc=%d): %s", proc.returncode, err)
            return f"Failed (exit {proc.returncode}): {err or output}"

        return output or "Done."

    except asyncio.TimeoutError:
        return "Error: script timed out"
    except Exception as e:
        logger.error("claude_allow_dir error: %s", e)
        return f"Error: {e}"