import type { Ref } from 'vue'
import { useApi } from '~/composables/useApi'

type PrintFrameRef = Ref<HTMLIFrameElement | null>

export const usePdfPrinter = () => {
  const api = useApi()

  const printPdf = async (url: string, frameRef: PrintFrameRef): Promise<void> => {
    if (!import.meta.client) {
      return
    }

    const frame = frameRef.value
    if (!frame) {
      return
    }

    // On charge le PDF en blob pour rester en same-origin dans l'iframe.
    const blob = await api.getBlob(url)
    const blobUrl = URL.createObjectURL(blob)

    const tryPrint = () => {
      frame.contentWindow?.focus()
      frame.contentWindow?.print()
    }

    frame.onload = () => {
      tryPrint()
      // On libere l'URL blob apres l'impression.
      setTimeout(() => URL.revokeObjectURL(blobUrl), 2000)
    }
    frame.src = blobUrl
    setTimeout(tryPrint, 1200)
  }

  return {
    printPdf
  }
}