NetNewsWire/iOS/Add/AddFeedViewController.swift

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Swift
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//
// AddFeedViewController.swift
// NetNewsWire
//
// Created by Maurice Parker on 4/16/19.
// Copyright © 2019 Ranchero Software, LLC. All rights reserved.
//
import UIKit
import Account
import RSCore
import RSTree
import RSParser
class AddFeedViewController: UITableViewController, AddContainerViewControllerChild {
@IBOutlet private weak var urlTextField: UITextField!
@IBOutlet private weak var nameTextField: UITextField!
@IBOutlet private weak var folderPickerView: UIPickerView!
@IBOutlet private weak var folderLabel: UILabel!
private lazy var pickerData: AddFeedFolderPickerData = AddFeedFolderPickerData()
private var shouldDisplayPicker: Bool {
return pickerData.containerNames.count > 1
}
private var userCancelled = false
weak var delegate: AddContainerViewControllerChildDelegate?
var initialFeed: String?
var initialFeedName: String?
override func viewDidLoad() {
super.viewDidLoad()
urlTextField.autocorrectionType = .no
urlTextField.autocapitalizationType = .none
urlTextField.text = initialFeed
urlTextField.delegate = self
if initialFeed != nil {
delegate?.readyToAdd(state: true)
}
nameTextField.text = initialFeedName
nameTextField.delegate = self
folderLabel.text = pickerData.containerNames.first
if shouldDisplayPicker {
folderPickerView.dataSource = self
folderPickerView.delegate = self
folderPickerView.showsSelectionIndicator = true
} else {
folderPickerView.isHidden = true
}
// I couldn't figure out the gap at the top of the UITableView, so I took a hammer to it.
tableView.contentInset = UIEdgeInsets(top: -28, left: 0, bottom: 0, right: 0)
NotificationCenter.default.addObserver(self, selector: #selector(textDidChange(_:)), name: UITextField.textDidChangeNotification, object: urlTextField)
}
func cancel() {
userCancelled = true
delegate?.processingDidCancel()
}
func add() {
let urlString = urlTextField.text ?? ""
let normalizedURLString = (urlString as NSString).rs_normalizedURL()
guard !normalizedURLString.isEmpty, let url = URL(string: normalizedURLString) else {
delegate?.processingDidCancel()
return
}
let container = pickerData.containers[folderPickerView.selectedRow(inComponent: 0)]
var account: Account?
if let containerAccount = container as? Account {
account = containerAccount
} else if let containerFolder = container as? Folder, let containerAccount = containerFolder.account {
account = containerAccount
}
if account!.hasFeed(withURL: url.absoluteString) {
showAlreadySubscribedError()
return
}
delegate?.processingDidBegin()
BatchUpdate.shared.start()
account!.createFeed(url: url.absoluteString, name: nameTextField.text, container: container) { result in
BatchUpdate.shared.end()
switch result {
case .success(let feed):
self.delegate?.processingDidEnd()
NotificationCenter.default.post(name: .UserDidAddFeed, object: self, userInfo: [UserInfoKey.feed: feed])
case .failure(let error):
switch error {
case AccountError.createErrorAlreadySubscribed:
self.showAlreadySubscribedError()
self.delegate?.processingDidCancel()
case AccountError.createErrorNotFound:
self.showNoFeedsErrorMessage()
self.delegate?.processingDidCancel()
default:
self.presentError(error)
self.delegate?.processingDidCancel()
}
}
}
}
@objc func textDidChange(_ note: Notification) {
delegate?.readyToAdd(state: urlTextField.text?.rs_stringMayBeURL() ?? false)
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let defaultNumberOfRows = super.tableView(tableView, numberOfRowsInSection: section)
if section == 1 && !shouldDisplayPicker {
return defaultNumberOfRows - 1
}
return defaultNumberOfRows
}
}
extension AddFeedViewController: UIPickerViewDataSource, UIPickerViewDelegate {
func numberOfComponents(in pickerView: UIPickerView) ->Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return pickerData.containerNames.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return pickerData.containerNames[row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
folderLabel.text = pickerData.containerNames[row]
}
}
private extension AddFeedViewController {
private func showAlreadySubscribedError() {
let title = NSLocalizedString("Already subscribed", comment: "Feed finder")
let message = NSLocalizedString("Cant add this feed because youve already subscribed to it.", comment: "Feed finder")
presentError(title: title, message: message)
}
private func showNoFeedsErrorMessage() {
let title = NSLocalizedString("Feed not found", comment: "Feed finder")
let message = NSLocalizedString("Cant add a feed because no feed was found.", comment: "Feed finder")
presentError(title: title, message: message)
}
private func showInitialDownloadError(_ error: Error) {
let title = NSLocalizedString("Download Error", comment: "Feed finder")
let formatString = NSLocalizedString("Cant add this feed because of a download error: “%@”", comment: "Feed finder")
let message = NSString.localizedStringWithFormat(formatString as NSString, error.localizedDescription)
presentError(title: title, message: message as String)
}
}
extension AddFeedViewController: UITextFieldDelegate {
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
}