from __future__ import annotations

import os
import subprocess
from pathlib import Path

from app.core.config import settings
from app.services.runtime_settings_service import get_runtime_settings
from app.services.worker_control_service import start_worker, stop_worker


def _workspace_root() -> Path:
    return Path(settings.domain_root).parent


def _run_shell(command: list[str], timeout: int = 30) -> subprocess.CompletedProcess[str]:
    return subprocess.run(command, capture_output=True, text=True, timeout=timeout)


def restart_api() -> tuple[bool, str]:
    runtime = get_runtime_settings()
    api_service_name = runtime.get("api_service_name", settings.api_service_name)
    worker_mode = runtime.get("worker_mode", settings.worker_mode)

    if worker_mode == "linux-systemd":
        result = _run_shell(["systemctl", "restart", api_service_name], timeout=30)
        if result.returncode != 0:
            return False, (result.stderr or result.stdout or "重启 Linux API 失败").strip()
        return True, f"Linux API 重启命令已发送: {api_service_name}"

    if os.name != "nt":
        return False, "当前仅实现 Windows 本地 API 重启，Linux 请将 worker_mode 设为 linux-systemd。"

    workspace = _workspace_root()
    stop_script = workspace / "stop_domain_api.ps1"
    start_script = workspace / "start_domain_api.ps1"
    if not stop_script.exists() or not start_script.exists():
        return False, "未找到 API 启停脚本"

    command = (
        "Start-Process powershell "
        "-ArgumentList '-NoProfile', '-ExecutionPolicy', 'Bypass', '-Command', "
        f"\"Start-Sleep -Seconds 2; & '{stop_script}'; Start-Sleep -Seconds 1; & '{start_script}'\""
    )
    result = _run_shell(["powershell", "-NoProfile", "-ExecutionPolicy", "Bypass", "-Command", command], timeout=20)
    if result.returncode != 0:
        return False, (result.stderr or result.stdout or "重启 API 失败").strip()
    return True, "API 重启命令已发送"


def runtime_action(action: str) -> tuple[bool, str, dict]:
    if action == "start_worker":
        ok, message = start_worker()
        return ok, message, {"action": action, "poll_after_seconds": 2, "refresh_runtime": True}
    if action == "stop_worker":
        ok, message = stop_worker()
        return ok, message, {"action": action, "poll_after_seconds": 2, "refresh_runtime": True}
    if action == "restart_api":
        ok, message = restart_api()
        return ok, message, {"action": action, "poll_after_seconds": 4, "refresh_runtime": True}
    return False, f"不支持的运行时动作: {action}", {
        "action": action,
        "poll_after_seconds": 0,
        "refresh_runtime": False,
    }