commerce/framework/bigcommerce/api/endpoints/customer/get-logged-in-customer.ts

import type { GetLoggedInCustomerQuery } from '../../../schema'
import type { CustomerEndpoint } from '.'

export const getLoggedInCustomerQuery = /* GraphQL */ `
  query getLoggedInCustomer {
    customer {
      entityId
      firstName
      lastName
      email
      company
      customerGroupId
      notes
      phone
      addressCount
      attributeCount
      storeCredit {
        value
        currencyCode
      }
    }
  }
`

export type Customer = NonNullable<GetLoggedInCustomerQuery['customer']>

const getLoggedInCustomer: CustomerEndpoint['handlers']['getLoggedInCustomer'] = async ({
  req,
  res,
  config,
}) => {
  const token = req.cookies[config.customerCookie]

  if (token) {
    const { data } = await config.fetch<GetLoggedInCustomerQuery>(
      getLoggedInCustomerQuery,
      undefined,
      {
        headers: {
          cookie: `${config.customerCookie}=${token}`,
        },
      }
    )
    const { customer } = data

    if (!customer) {
      return res.status(400).json({
        data: null,
        errors: [{ message: 'Customer not found', code: 'not_found' }],
      })
    }

    return res.status(200).json({ data: { customer } })
  }

  res.status(200).json({ data: null })
}

export default getLoggedInCustomer