"""Remind agents to verify and commit completed project-file changes."""

from __future__ import annotations

import json
import subprocess
import sys
from pathlib import Path


PROJECT_PREFIXES = (
    ".codex/",
    "AGENTS.md",
    "ARCHITECTURE.md",
    "PLAN.md",
    "PRD.md",
    "PROGRESS.md",
    "docs/",
)


def read_payload() -> dict:
    raw = sys.stdin.read()
    if not raw.strip():
        return {}
    try:
        return json.loads(raw)
    except json.JSONDecodeError:
        return {}


def find_repo_root(cwd: str | None) -> Path:
    start = Path(cwd or Path.cwd()).resolve()
    try:
        result = subprocess.run(
            ["git", "rev-parse", "--show-toplevel"],
            cwd=start,
            capture_output=True,
            text=True,
            check=True,
        )
        return Path(result.stdout.strip()).resolve()
    except Exception:
        return start


def project_changes(root: Path) -> list[str]:
    try:
        result = subprocess.run(
            ["git", "status", "--short"],
            cwd=root,
            capture_output=True,
            text=True,
            check=True,
        )
    except Exception:
        return []

    paths: list[str] = []
    for line in result.stdout.splitlines():
        path = line[3:].replace("\\", "/")
        if path.startswith("samples/"):
            continue
        if path.startswith(PROJECT_PREFIXES):
            paths.append(path)
    return paths


def main() -> int:
    payload = read_payload()
    root = find_repo_root(payload.get("cwd"))
    changes = project_changes(root)
    if not changes:
        return 0

    message = (
        "Project workflow/docs changed. Before finishing, run focused verification, "
        "commit the completed change, and keep samples/ out of the commit."
    )
    print(json.dumps({"continue": True, "systemMessage": message}, ensure_ascii=True))
    return 0


if __name__ == "__main__":
    raise SystemExit(main())