/// <reference path="../pb_data/types.d.ts" />
migrate((app) => {
  const c = app.findCollectionByNameOrId("pbc_2279568741") // termine

  // rrule – RFC-5545-Wiederholungsregel (nur RRULE-Teil ohne DTSTART)
  c.fields.addAt(99, new Field({
    "type": "text", "id": "text2001000090", "name": "rrule",
    "help": "", "hidden": false, "presentable": false, "required": false, "system": false,
    "autogeneratePattern": "", "min": 0, "max": 0, "pattern": ""
  }))

  // serie_id – gruppiert alle Termine einer Wiederholungsserie
  c.fields.addAt(99, new Field({
    "type": "text", "id": "text2001000091", "name": "serie_id",
    "help": "", "hidden": false, "presentable": false, "required": false, "system": false,
    "autogeneratePattern": "", "min": 0, "max": 0, "pattern": ""
  }))

  app.save(c)
}, (app) => {
  const c = app.findCollectionByNameOrId("pbc_2279568741")
  c.fields.removeById("text2001000090")
  c.fields.removeById("text2001000091")
  app.save(c)
})