import { CommerceAPIFetchOptions } from 'lib/commerce/api'
import { getConfig } from '..'
import log from '@lib/logger'

export default async function fetchGraphqlApi<Q, V = any>(
  query: string,
  { variables, preview }: CommerceAPIFetchOptions<V> = {}
): Promise<Q> {
  // log.warn(query)
  const config = getConfig()
  const res = await fetch(config.commerceUrl + (preview ? '/preview' : ''), {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      Authorization: `Bearer ${config.apiToken}`,
    },
    body: JSON.stringify({
      query,
      variables,
    }),
  })

  // console.log('HEADERS', getRawHeaders(res))

  const json = await res.json()
  if (json.errors) {
    console.error(json.errors)
    throw new Error('Failed to fetch BigCommerce API')
  }
  return json.data
}

function getRawHeaders(res: Response) {
  const headers: { [key: string]: string } = {}

  res.headers.forEach((value, key) => {
    headers[key] = value
  })

  return headers
}