// frontend/src/lib/api.ts

// ✅ DEV: immer relativ, damit Vite-Proxy (/api -> :9999) greift → kein CORS
// ✅ PROD: optional per VITE_API_BASE überschreiben
const API_BASE =
  import.meta.env.VITE_API_BASE ??
  (import.meta.env.DEV ? '' : '')

export const apiUrl = (path: string) => {
  const p = path.startsWith('/') ? path : `/${path}`
  return `${API_BASE}${p}`
}

export async function apiFetch(path: string, init?: RequestInit) {
  const res = await fetch(apiUrl(path), {
    ...init,
    credentials: 'include',
    headers: {
      ...(init?.headers ?? {}),
      'Content-Type': (init?.headers as any)?.['Content-Type'] ?? 'application/json',
    },
  })

  if (res.status === 401) {
    // optional: SPA route
    if (!location.pathname.startsWith('/login')) {
      location.href = '/login'
    }
  }
  return res
}