import { Router } from 'express'
import { config } from '../config.js'
import { getSessionCustomerId, requireSession } from '../middleware/session.js'
import { getDocument } from '../services/appwriteAdmin.js'
import { getCustomerActivity } from '../services/customerActivity.js'
import { listInvoicesForClient } from '../services/invoiceNinja.js'

const router = Router()

/** Rechnungen des eingeloggten Kunden (InvoiceNinja, sofern verknuepft). */
router.get('/invoices', requireSession, async (req, res) => {
  try {
    const customer = await getDocument(
      config.collections.customers,
      getSessionCustomerId(req)
    ).catch(() => null)
    if (!customer) {
      return res.status(404).json({ error: 'Kunde nicht gefunden' })
    }
    if (!customer.invoiceNinjaClientId) {
      return res.json({ linked: false, invoices: [] })
    }
    const invoices = await listInvoicesForClient(customer.invoiceNinjaClientId)
    return res.json({ linked: true, invoices })
  } catch (err) {
    return res.status(500).json({ error: err.message || 'Rechnungen konnten nicht geladen werden' })
  }
})

/** Ticket-/Arbeitshistorie des eingeloggten Kunden ("was wurde gemacht"). */
router.get('/activity', requireSession, async (req, res) => {
  try {
    const tickets = await getCustomerActivity(getSessionCustomerId(req), {
      ticketLimit: 25,
      // Interne Akquise-Tickets gehoeren nicht in die Kundenansicht
      excludeTypes: ['Akquise'],
    })
    return res.json({ tickets })
  } catch (err) {
    return res.status(500).json({ error: err.message || 'Aktivität konnte nicht geladen werden' })
  }
})

export default router