const BASE = process.env.VUE_APP_API_BASE || '/api'

async function request(path, options = {}) {
  const url = path.startsWith('http') ? path : `${BASE}${path}`
  const resp = await fetch(url, {
    credentials: 'include',
    ...options,
    headers: {
      'Accept': 'application/json',
      ...(options.body ? { 'Content-Type': 'application/json' } : {}),
      ...(options.headers || {}),
    },
  })
  if (!resp.ok) {
    let message = `${resp.status} ${resp.statusText}`
    try { const err = await resp.json(); message = err.message || message } catch (_) { /* ignore */ }
    const error = new Error(message)
    error.status = resp.status
    throw error
  }
  if (resp.status === 204) return null
  return resp.json()
}

export const http = {
  get: (p) => request(p),
  post: (p, body) => request(p, { method: 'POST', body: JSON.stringify(body) }),
  put: (p, body) => request(p, { method: 'PUT', body: JSON.stringify(body) }),
  del: (p) => request(p, { method: 'DELETE' }),
}