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FindFriendsViewController.swift
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FindFriendsViewController.swift
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import Foundation
import KsApi
import Library
import Prelude
import ReactiveExtensions
import ReactiveSwift
import UIKit
internal final class FindFriendsViewController: UITableViewController {
fileprivate let viewModel: FindFriendsViewModelType = FindFriendsViewModel()
fileprivate let dataSource = FindFriendsDataSource()
fileprivate let loadingIndicatorView = UIActivityIndicatorView()
fileprivate let backgroundView = UIView()
internal static func configuredWith(source: FriendsSource) -> FindFriendsViewController {
let vc = Storyboard.Friends.instantiate(FindFriendsViewController.self)
vc.viewModel.inputs.configureWith(source: source)
return vc
}
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.estimatedRowHeight = 100.0
self.tableView.rowHeight = UITableView.automaticDimension
self.tableView.backgroundView = self.backgroundView
self.tableView.insertSubview(self.loadingIndicatorView, aboveSubview: self.backgroundView)
self.tableView.dataSource = self.dataSource
self.viewModel.inputs.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.setNavigationBarHidden(false, animated: animated)
}
override func bindViewModel() {
super.bindViewModel()
self.loadingIndicatorView.rac.animating = self.viewModel.outputs.showLoadingIndicatorView
self.viewModel.outputs.friends
.observeForUI()
.observeValues { [weak self] friends, source in
self?.dataSource.friends(friends, source: source)
self?.tableView.reloadData()
}
self.viewModel.outputs.stats
.observeForUI()
.observeValues { [weak self] stats, source in
self?.dataSource.stats(stats: stats, source: source)
self?.tableView.reloadData()
}
self.viewModel.outputs.showFacebookConnect
.observeForUI()
.observeValues { [weak self] source, visible in
self?.dataSource.facebookConnect(source: source, visible: visible)
self?.tableView.reloadData()
}
self.viewModel.outputs.showFollowAllFriendsAlert
.observeForUI()
.observeValues { [weak self] count in
self?.showFollowAllConfirmationAlert(count: count)
}
self.viewModel.outputs.showErrorAlert
.observeForUI()
.observeValues { [weak self] error in
self?.present(
UIAlertController.alertController(forError: error),
animated: true,
completion: nil
)
}
}
internal override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
self.loadingIndicatorView.center = self.backgroundView.center
}
override func bindStyles() {
super.bindStyles()
_ = self
|> baseTableControllerStyle()
|> UIViewController.lens.title %~ { _ in Strings.Follow_friends() }
_ = self.loadingIndicatorView
|> baseActivityIndicatorStyle
}
override func tableView(_: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
if let statsCell = cell as? FindFriendsStatsCell, statsCell.delegate == nil {
statsCell.delegate = self
} else if let fbConnectCell = cell as? FindFriendsFacebookConnectCell, fbConnectCell.delegate == nil {
fbConnectCell.delegate = self
}
self.viewModel.inputs.willDisplayRow(
self.dataSource.itemIndexAt(indexPath),
outOf: self.dataSource.numberOfItems()
)
}
fileprivate func showFollowAllConfirmationAlert(count: Int) {
self.present(
UIAlertController.confirmFollowAllFriends(
friendsCount: count,
yesHandler: { _ in
self.viewModel.inputs.confirmFollowAllFriends()
},
noHandler: { _ in }
),
animated: true,
completion: nil
)
}
}
extension FindFriendsViewController: FindFriendsStatsCellDelegate {
func findFriendsStatsCellShowFollowAllFriendsAlert(friendCount: Int) {
self.viewModel.inputs.findFriendsStatsCellShowFollowAllFriendsAlert(friendCount: friendCount)
}
}
extension FindFriendsViewController: FindFriendsFacebookConnectCellDelegate {
func findFriendsFacebookConnectCellDidFacebookConnectUser() {
self.viewModel.inputs.findFriendsFacebookConnectCellDidFacebookConnectUser()
}
func findFriendsFacebookConnectCellDidDismissHeader() {}
func findFriendsFacebookConnectCellShowErrorAlert(_ alert: AlertError) {
self.viewModel.inputs.findFriendsFacebookConnectCellShowErrorAlert(alert)
}
}