#!/usr/bin/env python3
"""Cursor hook script that notifies the cursor-flasher daemon via Unix socket.

Installed as a Cursor hook (preToolUse, stop) to trigger a window flash
when the agent needs user attention. Reads hook JSON from stdin, extracts
workspace and event info, and sends it to the daemon's socket.
"""
import json
import os
import socket
import sys

SOCKET_PATH = os.path.expanduser("~/.cursor-flasher/flasher.sock")


def main() -> None:
    try:
        data = json.load(sys.stdin)
    except (json.JSONDecodeError, ValueError):
        return

    workspace_roots = data.get("workspace_roots") or []
    workspace = workspace_roots[0] if workspace_roots else ""
    event = data.get("hook_event_name", "")
    tool = data.get("tool_name", "")

    msg = json.dumps({"workspace": workspace, "event": event, "tool": tool})

    try:
        s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
        s.settimeout(1)
        s.connect(SOCKET_PATH)
        s.sendall(msg.encode())
        s.close()
    except (ConnectionRefusedError, FileNotFoundError, OSError):
        pass


if __name__ == "__main__":
    main()