import type { LoginEndpoint } from '.'

import { FetcherError } from '@vercel/commerce/utils/errors'
import { CommerceAPIError } from '@vercel/commerce/api/utils/errors'

const invalidCredentials = /invalid credentials/i

const login: LoginEndpoint['handlers']['login'] = async ({
  body: { email, password },
  config,
  commerce,
}) => {
  try {
    const res = new Response()
    await commerce.login({ variables: { email, password }, config, res })
    return {
      status: res.status,
      headers: res.headers,
    }
  } catch (error) {
    // Check if the email and password didn't match an existing account
    if (error instanceof FetcherError) {
      throw new CommerceAPIError(
        invalidCredentials.test(error.message)
          ? 'Cannot find an account that matches the provided credentials'
          : error.message,
        { status: error.status || 401 }
      )
    } else {
      throw error
    }
  }
}

export default login