import getTokenHelper from "../../../utils/getTokenHelper"
import fetchHelper from "../../../utils/fetchHelper"
import sendcloudHelper from "../../../utils/sendcloudHelper"
import dhlTrackingHelper from "../../../utils/dhlTrackingHelper"
import { resolveDhlAccount, toTrackingCredential } from "../../../utils/dhlAccountResolver"

export default defineEventHandler(async (event: any) => {
  const query = getQuery(event)
  const trackingNo = String(query?.no ?? '').trim()
  const service = String(query?.service ?? 'dhl').toLowerCase()
  const inoutId = query?.inout_id ? String(query.inout_id) : ''

  let data: any = {}
  let tracking_service = ''
  let tracking_inout = ''

  if (!trackingNo) {
    return { tracking_service: '', tracking_inout: '' }
  }

  try {
    if (service === 'sendcloud') {
      const res: any = await sendcloudHelper(`tracking/${encodeURIComponent(trackingNo)}`, 'GET', null)
      if (res) {
        data = { ...res }
        data.tracking_content = (res?.statuses ?? []).map((item: any) => ({
          timestamp: item.carrier_update_timestamp,
          title: item.carrier_message,
          description: `${item.carrier_message}, ${item.carrier_code} ${item.parcel_status_history_id}`,
          status: item.parent_status
        }))
      }
      tracking_service = 'sendcloud'
    } else {
      // Default to DHL — unified tracking API handles both DE parcels and international
      // Tracking uses the account the label was created with (order source → org
      // partner → main); the API key header is what DHL's tracking API checks.
      const token = (await getTokenHelper(event)) || useRuntimeConfig().api.idempieretoken
      const account = await resolveDhlAccount(event, { inoutId: inoutId || null, token })
      const credential: any = toTrackingCredential(account, 'kOMZlCkdY27OvpGKiUffZ8lUigNhcvWn')

      const url = `track/shipments?trackingNumber=${encodeURIComponent(trackingNo)}`
      const res: any = await dhlTrackingHelper(event, credential, url, 'GET', null)

      if (res) {
        data = { ...res }
        data.tracking_content = (res?.shipments?.[0]?.events ?? []).map((item: any) => {
          const locality = item?.location?.address?.addressLocality ?? ''
          const countryCode = item?.location?.address?.countryCode ?? ''
          const postalCode = item?.location?.address?.postalCode ?? ''
          return {
            timestamp: item.timestamp,
            title: item.status,
            description: item?.description ?? item?.remark ?? `${locality}, ${countryCode} ${postalCode}`.trim(),
            locality,
            postalCode,
            countryCode,
            status: item.statusCode
          }
        })
      }
      tracking_service = 'dhl'
      tracking_inout = inoutId
    }
  } catch (error: any) {
    data.error = error?.data ?? error?.message ?? 'Tracking lookup failed'
    tracking_service = 'error'
  }

  data.tracking_service = tracking_service
  data.tracking_inout = tracking_inout
  return data
})