133 lines
4.6 KiB
Swift
133 lines
4.6 KiB
Swift
//
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// AddSavedHashtagViewController.swift
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// Tusker
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//
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// Created by Shadowfacts on 12/19/19.
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// Copyright © 2019 Shadowfacts. All rights reserved.
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//
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import UIKit
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import Pachyderm
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class AddSavedHashtagViewController: EnhancedTableViewController {
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weak var mastodonController: MastodonController!
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var resultsController: SearchResultsViewController!
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var searchController: UISearchController!
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var dataSource: UITableViewDiffableDataSource<Section, Item>!
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init(mastodonController: MastodonController) {
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self.mastodonController = mastodonController
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super.init(style: .grouped)
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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title = NSLocalizedString("Search", comment: "search screen title")
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tableView.register(UINib(nibName: "TrendingHashtagTableViewCell", bundle: .main), forCellReuseIdentifier: "trendingTagCell")
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tableView.rowHeight = 60 // 44 for content + 2 * 8 spacing
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dataSource = DataSource(tableView: tableView, cellProvider: { (tableView, indexPath, item) -> UITableViewCell? in
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switch item {
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case let .tag(hashtag):
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let cell = tableView.dequeueReusableCell(withIdentifier: "trendingTagCell", for: indexPath) as! TrendingHashtagTableViewCell
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cell.updateUI(hashtag: hashtag)
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return cell
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}
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})
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resultsController = HashtagSearchResultsViewController(mastodonController: mastodonController)
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resultsController.delegate = self
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resultsController.exploreNavigationController = self.navigationController!
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searchController = UISearchController(searchResultsController: resultsController)
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searchController.obscuresBackgroundDuringPresentation = true
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searchController.hidesNavigationBarDuringPresentation = false
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searchController.searchResultsUpdater = resultsController
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searchController.searchBar.autocapitalizationType = .none
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searchController.searchBar.placeholder = NSLocalizedString("Search for hashtags to save", comment: "add saved hashtag search field placeholder")
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searchController.searchBar.delegate = resultsController
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searchController.searchBar.showsCancelButton = false
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definesPresentationContext = true
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navigationItem.searchController = searchController
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navigationItem.hidesSearchBarWhenScrolling = false
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navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(cancelButtonPressed))
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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let request = Client.getTrends(limit: 10)
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mastodonController.run(request) { (response) in
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var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
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guard case let .success(hashtags, _) = response,
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hashtags.count > 0 else {
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self.dataSource.apply(snapshot)
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return
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}
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snapshot.appendSections([.trendingTags])
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snapshot.appendItems(hashtags.map { .tag($0) })
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self.dataSource.apply(snapshot, animatingDifferences: false)
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}
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}
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private func selectHashtag(_ hashtag: Hashtag) {
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SavedDataManager.shared.add(hashtag: hashtag, for: mastodonController.accountInfo!)
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presentingViewController!.dismiss(animated: true)
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}
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// MARK: - Table View Delegate
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override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
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switch dataSource.itemIdentifier(for: indexPath) {
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case nil:
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return
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case let .tag(hashtag):
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selectHashtag(hashtag)
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}
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}
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// MARK: - Interaction
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@objc func cancelButtonPressed() {
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dismiss(animated: true)
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}
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}
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extension AddSavedHashtagViewController {
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enum Section {
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case trendingTags
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}
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enum Item: Hashable {
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case tag(Hashtag)
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}
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class DataSource: UITableViewDiffableDataSource<Section, Item> {
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override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
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return NSLocalizedString("Trending Hashtags", comment: "trending hashtags seciton title")
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}
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}
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}
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extension AddSavedHashtagViewController: SearchResultsViewControllerDelegate {
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func selectedSearchResult(hashtag: Hashtag) {
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selectHashtag(hashtag)
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}
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}
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