Add list creation

Tusker/Screens/Explore/ExploreViewController.swift

@@ -36,26 +36,32 @@ class ExploreViewController: EnhancedTableViewController {
         tableView.register(UINib(nibName: "BasicTableViewCell", bundle: .main), forCellReuseIdentifier: "basicCell")
 
         dataSource = DataSource(tableView: tableView, cellProvider: { (tableView, indexPath, item) -> UITableViewCell? in
+            let cell = tableView.dequeueReusableCell(withIdentifier: "basicCell", for: indexPath)
+            
             switch item {
             case .bookmarks:
-                let cell = tableView.dequeueReusableCell(withIdentifier: "basicCell", for: indexPath)
                 cell.imageView!.image = UIImage(systemName: "bookmark.fill")
                 cell.textLabel!.text = NSLocalizedString("Bookmarks", comment: "bookmarks nav item title")
                 cell.accessoryType = .disclosureIndicator
-                return cell
 
             case let .list(list):
-                let cell = tableView.dequeueReusableCell(withIdentifier: "basicCell", for: indexPath)
                 cell.imageView!.image = nil
                 cell.textLabel!.text = list.title
                 cell.accessoryType = .disclosureIndicator
-                return cell
+
+            case .addList:
+                cell.imageView!.image = UIImage(systemName: "plus")
+                cell.textLabel!.text = NSLocalizedString("New List...", comment: "new list nav item title")
+                cell.accessoryType = .none
             }
+            
+            return cell
         })
         
         var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
         snapshot.appendSections([.bookmarks, .lists])
         snapshot.appendItems([.bookmarks], toSection: .bookmarks)
+        snapshot.appendItems([.addList], toSection: .lists)
         // the initial, static items should not be displayed with an animation
         UIView.performWithoutAnimation {
             dataSource.apply(snapshot)
@@ -72,6 +78,10 @@ class ExploreViewController: EnhancedTableViewController {
         navigationItem.searchController = searchController
         navigationItem.hidesSearchBarWhenScrolling = false
         
+        reloadLists()
+    }
+    
+    func reloadLists() {
         let request = MastodonController.client.getLists()
         MastodonController.client.run(request) { (response) in
             guard case let .success(lists, _) = response else {
@@ -79,7 +89,9 @@ class ExploreViewController: EnhancedTableViewController {
             }
             
             var snapshot = self.dataSource.snapshot()
-            snapshot.appendItems(lists.map { .list($0) }, toSection: .lists)
+            snapshot.deleteSections([.lists])
+            snapshot.appendSections([.lists])
+            snapshot.appendItems(lists.map { .list($0) } + [.addList], toSection: .lists)
             
             DispatchQueue.main.async {
                 self.dataSource.apply(snapshot)
@@ -99,6 +111,29 @@ class ExploreViewController: EnhancedTableViewController {
             
         case let .list(list):
             show(ListTimelineViewController(for: list), sender: nil)
+            
+        case .addList:
+            tableView.selectRow(at: nil, animated: true, scrollPosition: .none)
+            let alert = UIAlertController(title: NSLocalizedString("New List", comment: "new list alert title"), message: NSLocalizedString("Choose a title for your new list", comment: "new list alert message"), preferredStyle: .alert)
+            alert.addTextField(configurationHandler: nil)
+            alert.addAction(UIAlertAction(title: NSLocalizedString("Cancel", comment: "new list alert cancel button"), style: .cancel, handler: nil))
+            alert.addAction(UIAlertAction(title: NSLocalizedString("Create List", comment: "new list create button"), style: .default, handler: { (_) in
+                guard let title = alert.textFields?.first?.text else {
+                    fatalError()
+                }
+                
+                let request = MastodonController.client.createList(title: title)
+                MastodonController.client.run(request) { (response) in
+                    guard case let .success(list, _) = response else { fatalError() }
+                    
+                    self.reloadLists()
+                    
+                    DispatchQueue.main.async {
+                        self.show(ListTimelineViewController(for: list), sender: nil)
+                    }
+                }
+            }))
+            present(alert, animated: true)
         }
     }
 
@@ -112,6 +147,7 @@ extension ExploreViewController {
     enum Item: Hashable {
         case bookmarks
         case list(List)
+        case addList
         
         static func == (lhs: ExploreViewController.Item, rhs: ExploreViewController.Item) -> Bool {
             switch (lhs, rhs) {
@@ -119,6 +155,8 @@ extension ExploreViewController {
                 return true
             case let (.list(a), .list(b)):
                 return a.id == b.id
+            case (.addList, .addList):
+                return true
             default:
                 return false
             }
@@ -130,6 +168,8 @@ extension ExploreViewController {
             case let .list(list):
                 hasher.combine("list")
                 hasher.combine(list.id)
+            case .addList:
+                hasher.combine("addList")
             }
         }
     }