/// <reference path="../pb_data/types.d.ts" />
migrate((app) => {
  const collection = app.findCollectionByNameOrId("pbc_863577031");

  // Remove excess fields to match t_navbar structure
  
  // remove field: section
  collection.fields.removeById("text1122334455");

  // remove field: column_title
  collection.fields.removeById("text2233445566");

  // remove field: column_order
  collection.fields.removeById("number1122334455");

  // remove field: item_order
  collection.fields.removeById("number2233445566");

  // remove field: is_cta
  collection.fields.removeById("bool1122334455");

  // remove field: item_type
  collection.fields.removeById("text3344556677");

  // remove field: target_blank
  collection.fields.removeById("bool2233445566");

  // remove field: css_class
  collection.fields.removeById("text4455667788");

  // remove field: svg_icon
  collection.fields.removeById("text5566778899");

  // remove field: hover_color_class
  collection.fields.removeById("text6677889900");

  // remove field: icon
  collection.fields.removeById("text7788990011");

  return app.save(collection);
}, (app) => {
  const collection = app.findCollectionByNameOrId("pbc_863577031");

  // Add back all the fields that were removed in the main migration

  // add field for section
  collection.fields.addAt(5, new Field({
    "autogeneratePattern": "",
    "hidden": false,
    "id": "text1122334455",
    "max": 0,
    "min": 0,
    "name": "section",
    "pattern": "",
    "presentable": false,
    "primaryKey": false,
    "required": false,
    "system": false,
    "type": "text"
  }));

  // add field for column_title
  collection.fields.addAt(6, new Field({
    "autogeneratePattern": "",
    "hidden": false,
    "id": "text2233445566",
    "max": 0,
    "min": 0,
    "name": "column_title",
    "pattern": "",
    "presentable": false,
    "primaryKey": false,
    "required": false,
    "system": false,
    "type": "text"
  }));

  // add field for column_order
  collection.fields.addAt(7, new Field({
    "hidden": false,
    "id": "number1122334455",
    "max": null,
    "min": null,
    "name": "column_order",
    "onlyInt": true,
    "presentable": false,
    "required": false,
    "system": false,
    "type": "number"
  }));

  // add field for item_order
  collection.fields.addAt(8, new Field({
    "hidden": false,
    "id": "number2233445566",
    "max": null,
    "min": null,
    "name": "item_order",
    "onlyInt": true,
    "presentable": false,
    "required": false,
    "system": false,
    "type": "number"
  }));

  // add field for is_cta
  collection.fields.addAt(9, new Field({
    "hidden": false,
    "id": "bool1122334455",
    "name": "is_cta",
    "presentable": false,
    "required": false,
    "system": false,
    "type": "bool"
  }));

  // add field for item_type
  collection.fields.addAt(10, new Field({
    "autogeneratePattern": "",
    "hidden": false,
    "id": "text3344556677",
    "max": 0,
    "min": 0,
    "name": "item_type",
    "pattern": "",
    "presentable": false,
    "primaryKey": false,
    "required": false,
    "system": false,
    "type": "text"
  }));

  // add field for target_blank
  collection.fields.addAt(11, new Field({
    "hidden": false,
    "id": "bool2233445566",
    "name": "target_blank",
    "presentable": false,
    "required": false,
    "system": false,
    "type": "bool"
  }));

  // add field for css_class
  collection.fields.addAt(12, new Field({
    "autogeneratePattern": "",
    "hidden": false,
    "id": "text4455667788",
    "max": 0,
    "min": 0,
    "name": "css_class",
    "pattern": "",
    "presentable": false,
    "primaryKey": false,
    "required": false,
    "system": false,
    "type": "text"
  }));

  // add field for svg_icon
  collection.fields.addAt(13, new Field({
    "autogeneratePattern": "",
    "hidden": false,
    "id": "text5566778899",
    "max": 0,
    "min": 0,
    "name": "svg_icon",
    "pattern": "",
    "presentable": false,
    "primaryKey": false,
    "required": false,
    "system": false,
    "type": "text"
  }));

  // add field for hover_color_class
  collection.fields.addAt(14, new Field({
    "autogeneratePattern": "",
    "hidden": false,
    "id": "text6677889900",
    "max": 0,
    "min": 0,
    "name": "hover_color_class",
    "pattern": "",
    "presentable": false,
    "primaryKey": false,
    "required": false,
    "system": false,
    "type": "text"
  }));

  // add field for icon
  collection.fields.addAt(15, new Field({
    "autogeneratePattern": "",
    "hidden": false,
    "id": "text7788990011",
    "max": 0,
    "min": 0,
    "name": "icon",
    "pattern": "",
    "presentable": false,
    "primaryKey": false,
    "required": false,
    "system": false,
    "type": "text"
  }));

  return app.save(collection);
})