const API_BASE = String(import.meta.env.VITE_API_BASE_URL || '/api/v1').replace(/\/$/, '')

function buildUrl(path) {
  if (!path.startsWith('/')) {
    return `${API_BASE}/${path}`
  }

  return `${API_BASE}${path}`
}

export async function apiRequest(path, options = {}) {
  let response

  try {
    response = await fetch(buildUrl(path), {
      headers: {
        'Content-Type': 'application/json',
        ...(options.headers || {})
      },
      ...options
    })
  } catch {
    throw new Error('无法连接后端员工服务，请确认 FastAPI 已启动。')
  }

  let payload = null

  try {
    payload = await response.json()
  } catch {
    payload = null
  }

  if (!response.ok) {
    throw new Error(payload?.detail || '接口请求失败，请稍后重试。')
  }

  return payload
}