const BASE = import.meta.env.VITE_API_URL ?? '/api'

export async function apiFetch<T>(path: string, init?: RequestInit): Promise<T> {
  const res = await fetch(`${BASE}${path}`, {
    ...init,
    credentials: 'include',
    headers: { 'Content-Type': 'application/json', ...init?.headers },
  })
  if (!res.ok) {
    let message = `Request failed (${res.status})`
    try {
      const body = await res.json()
      if (body?.detail) message = body.detail
      else if (body?.title) message = body.title
    } catch {
      // ignore parse errors
    }
    throw new Error(message)
  }
  return res.status === 204 ? (undefined as T) : res.json()
}