#!/usr/bin/env python3
"""Syntax guard — compile all Python files to catch syntax errors before merge."""
import py_compile
import sys
from pathlib import Path

errors = []
script_dir = Path(__file__).resolve().parent
repo_root = script_dir
while not (repo_root / ".git").is_dir():
    repo_root = repo_root.parent
    if repo_root == repo_root.parent:
        break  # Prevent infinite loop if not in a git repo

for p in repo_root.rglob("*.py"):
    if ".venv" in p.parts or "__pycache__" in p.parts:
        continue
    try:
        py_compile.compile(str(p), doraise=True)
    except py_compile.PyCompileError as e:
        errors.append(f"{p}: {e}")
        print(f"SYNTAX ERROR: {p}: {e}", file=sys.stderr)

if errors:
    print(f"\n{len(errors)} file(s) with syntax errors", file=sys.stderr)
    sys.exit(1)
print("All Python files compile successfully")