import fs from 'fs'
import { PDFDocument, StandardFonts, rgb } from 'pdf-lib'

async function fill() {
  const templatePath = 'server/templates/mitgliedschaft-fillable.pdf'
  if (!fs.existsSync(templatePath)) {
    console.error('Template not found:', templatePath)
    process.exit(1)
  }

  const existingPdfBytes = fs.readFileSync(templatePath)
  const pdfDoc = await PDFDocument.load(existingPdfBytes)
  const form = pdfDoc.getForm()

  // Simple sample data
  const sample = {
    nachname: 'Müller',
    vorname: 'Anna',
    strasse: 'Hauptstr. 12',
    plz_ort: '60389 Frankfurt',
    geburtsdatum: '01.01.1990',
    telefon: '069 123456',
    email: 'anna.mueller@example.de',
    telefon_mobil: '0151 2345678',
    mitglied_aktiv: true,
    mitglied_passiv: false,
    sepa_mitglied: 'Anna Müller',
    sepa_kontoinhaber: 'Anna Müller',
    sepa_strasse: 'Hauptstr. 12',
    sepa_plz_ort: '60389 Frankfurt',
    sepa_bank: 'Sparkasse',
    sepa_iban: 'DE00123456781234567890',
    sepa_bic: 'PBNKDEFF',
    sepa_datum: '23.10.2025',
  sign_datum: '23.10.2025',
    page3_name: 'Müller',
    page3_vorname: 'Anna',
    page3_anschrift: 'Hauptstr. 12, 60389 Frankfurt',
    page3_telefon: '069 123456',
    page3_fax: '069 654321',
    page3_email: 'anna.mueller@example.de',
    page3_datum: '23.10.2025'
  }

  function safeSetText(name, value) {
    try {
      const f = form.getTextField(name)
      f.setText(value)
    } catch (e) {
      // ignore missing fields
    }
  }

  safeSetText('nachname', sample.nachname)
  safeSetText('vorname', sample.vorname)
  safeSetText('strasse', sample.strasse)
  safeSetText('plz_ort', sample.plz_ort)
  safeSetText('geburtsdatum', sample.geburtsdatum)
  safeSetText('telefon', sample.telefon)
  safeSetText('email', sample.email)
  safeSetText('telefon_mobil', sample.telefon_mobil)

  try {
    const cbA = form.getCheckBox('mitglied_aktiv')
    if (sample.mitglied_aktiv) cbA.check(); else cbA.uncheck()
  } catch(e) {}
  try {
    const cbP = form.getCheckBox('mitglied_passiv')
    if (sample.mitglied_passiv) cbP.check(); else cbP.uncheck()
  } catch(e) {}

  safeSetText('sepa_mitglied', sample.sepa_mitglied)
  safeSetText('sepa_kontoinhaber', sample.sepa_kontoinhaber)
  safeSetText('sepa_strasse', sample.sepa_strasse)
  safeSetText('sepa_plz_ort', sample.sepa_plz_ort)
  safeSetText('sepa_bank', sample.sepa_bank)
  safeSetText('sepa_iban', sample.sepa_iban)
  safeSetText('sepa_bic', sample.sepa_bic)
  safeSetText('sepa_datum', sample.sepa_datum)
  safeSetText('sign_datum', sample.sign_datum)

  // page3 fields
  safeSetText('page3_name', sample.page3_name)
  safeSetText('page3_vorname', sample.page3_vorname)
  safeSetText('page3_anschrift', sample.page3_anschrift)
  safeSetText('page3_telefon', sample.page3_telefon)
  safeSetText('page3_fax', sample.page3_fax)
  safeSetText('page3_email', sample.page3_email)
  safeSetText('page3_datum', sample.page3_datum)

  // flatten all fields
  try { form.flatten() } catch (e) {}

  const out = await pdfDoc.save()
  if (!fs.existsSync('temp')) fs.mkdirSync('temp')
  fs.writeFileSync('temp/mitgliedschaft-sample-filled.pdf', out)
  console.log('Wrote temp/mitgliedschaft-sample-filled.pdf')
}

fill().catch(e => { console.error(e); process.exit(1) })