// Get existing or create new Helcim customer (for upgrading members)
import { requireAuth } from '../../utils/auth.js'
import { findHelcimCustomerByEmail, createHelcimCustomer } from '../../utils/helcim.js'

export default defineEventHandler(async (event) => {
  try {
    const member = await requireAuth(event)

    // First, try to find an existing customer
    let existingCustomer = null
    try {
      const searchData = await findHelcimCustomerByEmail(member.email)
      if (searchData.customers && searchData.customers.length > 0) {
        existingCustomer = searchData.customers.find(c => c.email === member.email) || null
      }
    } catch (searchError) {
      console.error('Error searching for customer:', searchError)
      // Fall through to create
    }

    if (existingCustomer) {
      if (!member.helcimCustomerId) {
        member.helcimCustomerId = existingCustomer.id
        await member.save()
      }
      return {
        success: true,
        customerId: existingCustomer.id,
        customerCode: existingCustomer.customerCode,
        existing: true
      }
    }

    // No existing customer found — create one
    const customerData = await createHelcimCustomer({
      contactName: member.name,
      businessName: member.name,
      email: member.email
    })

    member.helcimCustomerId = customerData.id
    await member.save()

    return {
      success: true,
      customerId: customerData.id,
      customerCode: customerData.customerCode,
      existing: false
    }

  } catch (error) {
    if (error.statusCode) throw error
    console.error('Error in get-or-create-customer:', error)
    throw createError({
      statusCode: 500,
      statusMessage: 'An unexpected error occurred'
    })
  }
})