Animating UITableView with the Observe API

let liveQuery = myCollection.find("store_id == 'abc123'").observeLocal { [weak self] documents, event in
    print("current snapshot of documents", documents)
    print("event information", event)
}

import UIKit
import DittoSwift

class ViewController: UIViewController: {

    var liveQuery: DittoLiveQuery?
    @IBOutlet weak var tableView!
    var documents: [DittoDocument] = []

    override func viewDidLoad(){
        super.viewDidLoad();
        tableView.dataSource = self

        liveQuery = collection.find("store_id == 'abc123'").observeLocal { [weak self] docs, event in
            guard let `self` = self else { return }
            switch event {
            case .update(let changes):
                guard changes.insertions.count > 0 || changes.deletions.count > 0 || changes.updates.count > 0  || changes.moves.count > 0 else { return }
                DispatchQueue.main.async {
                    self.tableView.beginUpdates()
                    self.tableView.performBatchUpdates({
                        let deletionIndexPaths = changes.deletions.map { idx -> IndexPath in
                            return IndexPath(row: idx, section: 0)
                        }
                        self.tableView.deleteRows(at: deletionIndexPaths, with: .automatic)
                        let insertionIndexPaths = changes.insertions.map { idx -> IndexPath in
                            return IndexPath(row: idx, section: 0)
                        }
                        self.tableView.insertRows(at: insertionIndexPaths, with: .automatic)
                        let updateIndexPaths = changes.updates.map { idx -> IndexPath in
                            return IndexPath(row: idx, section: 0)
                        }
                        self.tableView.reloadRows(at: updateIndexPaths, with: .automatic)
                        for move in changes.moves {
                            let from = IndexPath(row: move.from, section: 0)
                            let to = IndexPath(row: move.to, section: 0)
                            self.tableView.moveRow(at: from, to: to)
                        }
                    }) { _ in }
                    // Set the tasks array backing the UITableView to the new documents
                    self.tasks = docs
                    self.tableView.endUpdates()
                }
            case .initial:
                // Set the tasks array backing the UITableView to the new documents
                self.tasks = docs
                DispatchQueue.main.async {
                    self.tableView.reloadData()
                }
            default: break
            }
        }
    }
}

extension ViewController: UITableViewDataSource {

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return documents.count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let document = documents[indexPath.row]
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell") ?? UITableViewCell(style: .default, reuseIdentifier: "Cell")
        cell.textLabel?.text = document["text"].stringValue
        return cell
    }
}