/// PocketBase migration: `updated_at` + `deleted` on overview favourites and
/// home filter widgets for cross-device last-write-wins sync.
///
/// Apply on the server:
///
///   sudo cp this_file /opt/pocketbase/pb_migrations/
///   sudo chown pocketbase:pocketbase /opt/pocketbase/pb_migrations/*.js
///   sudo -u pocketbase /opt/pocketbase/pocketbase migrate up
///   sudo systemctl restart pocketbase
migrate((app) => {
  function addSyncFields(collectionName) {
    const col = app.findCollectionByNameOrId(collectionName);
    let changed = false;
    if (!col.fields.getByName("updated_at")) {
      col.fields.add(new Field({
        type: "number",
        name: "updated_at",
        required: false,
      }));
      changed = true;
    }
    if (!col.fields.getByName("deleted")) {
      col.fields.add(new Field({
        type: "bool",
        name: "deleted",
        required: false,
      }));
      changed = true;
    }
    if (changed) app.save(col);
  }

  addSyncFields("overview_favourites");
  addSyncFields("home_filter_widgets");
}, (app) => {
  function removeSyncFields(collectionName) {
    try {
      const col = app.findCollectionByNameOrId(collectionName);
      const updated = col.fields.getByName("updated_at");
      if (updated) col.fields.removeById(updated.id);
      const deleted = col.fields.getByName("deleted");
      if (deleted) col.fields.removeById(deleted.id);
      app.save(col);
    } catch (_) {}
  }
  removeSyncFields("overview_favourites");
  removeSyncFields("home_filter_widgets");
});