#!/usr/bin/env node
/**
 * Konvertiert startDate/endDate von GIT-Worksheets aus YYYYMMDD nach dd.mm.yyyy
 * (Format der Ticketsystem-SPA). Idempotent.
 * Usage: APPWRITE_API_KEY=... node scripts/migrate-git-worksheet-dates.mjs
 */
const endpoint = (process.env.APPWRITE_ENDPOINT || 'https://ticket.webklar.com/v1').replace(/\/$/, '')
const projectId = process.env.APPWRITE_PROJECT_ID || '6a1058610003c5a13a05'
const apiKey = process.env.APPWRITE_API_KEY
const databaseId = process.env.APPWRITE_DATABASE_ID || 'woms-database'

if (!apiKey) {
  console.error('APPWRITE_API_KEY erforderlich')
  process.exit(1)
}

const headers = {
  'Content-Type': 'application/json',
  'X-Appwrite-Project': projectId,
  'X-Appwrite-Key': apiKey,
}

function convert(value) {
  const m = String(value || '').match(/^(\d{4})(\d{2})(\d{2})$/)
  return m ? `${m[3]}.${m[2]}.${m[1]}` : null
}

const listUrl = `${endpoint}/databases/${databaseId}/collections/worksheets/documents?queries[]=${encodeURIComponent(
  JSON.stringify({ method: 'limit', values: [500] })
)}`
const { documents } = await fetch(listUrl, { headers }).then((r) => r.json())

let migrated = 0
for (const doc of documents || []) {
  const data = {}
  const start = convert(doc.startDate)
  const end = convert(doc.endDate)
  if (start) data.startDate = start
  if (end) data.endDate = end
  if (!Object.keys(data).length) continue

  await fetch(`${endpoint}/databases/${databaseId}/collections/worksheets/documents/${doc.$id}`, {
    method: 'PATCH',
    headers,
    body: JSON.stringify({ data }),
  })
  migrated += 1
  console.log(`migriert: WSID ${doc.wsid} (${doc.$id}) -> ${data.startDate || doc.startDate}`)
}
console.log(`Fertig: ${migrated} Worksheet(s) migriert.`)