#!/usr/bin/env python3
"""Stop — frontend/src 미커밋 변경이 직전 tsc 통과 이후 바뀌었으면 npx tsc --noEmit (90초)."""
import hashlib
import os
import subprocess
import sys

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from _lib import git, project_dir, read_stdin_json  # noqa: E402


def main() -> int:
    data = read_stdin_json()
    if data.get("stop_hook_active"):
        return 0
    root = project_dir(data)
    _, st = git(["status", "--porcelain", "--", "frontend/src"], root)
    files = [l[3:].strip() for l in st.splitlines() if l.strip()]
    if not files:
        return 0
    h = hashlib.sha1()
    for f in sorted(files):
        p = os.path.join(root, f)
        try:
            h.update(f.encode() + str(os.stat(p).st_mtime_ns).encode())
        except OSError:
            h.update(f.encode() + b"deleted")
    digest = h.hexdigest()
    stamp = os.path.join(os.environ.get("HARNESS_STATE_DIR", os.path.join(root, ".claude")), ".tsc_stamp")
    try:
        if open(stamp).read().strip() == digest:
            return 0
    except OSError:
        pass
    fe = os.path.join(root, "frontend")
    cmd = os.environ.get("HARNESS_TSC_CMD")
    argv = ["bash", "-c", cmd] if cmd else ["npx", "--no-install", "tsc", "--noEmit"]
    try:
        p = subprocess.run(argv, cwd=fe, capture_output=True, text=True, timeout=90)
    except subprocess.TimeoutExpired:
        sys.stderr.write("[harness] tsc 90초 초과 — 건너뜀\n")
        return 0
    except Exception:
        return 0
    if p.returncode != 0:
        tail = "\n".join((p.stdout + p.stderr).strip().splitlines()[:30])
        sys.stderr.write(f"[harness] frontend 타입 체크 실패(tsc --noEmit). 수정 후 마치라:\n{tail}\n")
        return 2
    try:
        open(stamp, "w").write(digest)
    except OSError:
        pass
    return 0


if __name__ == "__main__":
    sys.exit(main())