import os
import sys
from pathlib import Path

from app.application.services import AppConfig
from app.infrastructure.backend import start_backend

PROJECT_ROOT = Path(__file__).resolve().parent
VENV_ROOT = PROJECT_ROOT / ".venv"
VENV_DIR = VENV_ROOT / "Scripts"
VENV_PYTHON = VENV_DIR / "python.exe"


def _resolve(path):
    try:
        return Path(path).resolve()
    except Exception:
        return None


def _running_in_project_venv():
    current_prefix = _resolve(sys.prefix)
    if current_prefix == _resolve(VENV_ROOT):
        return True
    current_executable = _resolve(sys.executable)
    return current_executable == _resolve(VENV_PYTHON)


def ensure_project_venv():
    if _running_in_project_venv():
        return
    if os.environ.get("OPENCLAW_PROJECT_VENV_REEXEC") == "1":
        raise RuntimeError("重启后仍未进入项目 .venv，请检查 .venv 是否损坏")
    if not VENV_PYTHON.exists():
        raise RuntimeError(f"未找到项目 .venv 解释器: {VENV_PYTHON}")
    os.environ["OPENCLAW_PROJECT_VENV_REEXEC"] = "1"
    os.chdir(str(PROJECT_ROOT))
    os.execv(str(VENV_PYTHON), [str(VENV_PYTHON), str(PROJECT_ROOT / "backend_main.py")])


ensure_project_venv()


if __name__ == "__main__":
    config = AppConfig()
    start_backend(host=config.host, port=config.port)